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Zhao, Q., G. S. Boomer, and W. L. Kendall. 2016. Partitioning the effects of hunting and climate on waterfowl survival. North American Ornithological Conference, Washington, DC.
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August 2016
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In this work the effects of both climate and density dependence on mallard survival are modeled, while accounting for variability in hunter effects. We find that adult female survival is most subject to these non-hunting factors.
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Womble, J.N., P.J. Williams, M.B. Hooten, G.G. Esslinger, L. Taylor-Thomas, M.R. Bower, and H. Coletti. (2017). Combining Contemporary Spatiotemporal Models and Aerial Photographic Techniques to Estimate Sea Otter Colonization and Abundance in Glacier Bay, Alaska. Society for Marine Mammalogy Meetings, Halifax, Nova Scotia.
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October 2017
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This talk describes a method for using aerial imagery over large spatial regions to estimate abundance.
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Womble, J.N., P.J. Williams, M.B. Hooten, G.G. Esslinger, M.R. Bower, and H. Colletti. National Park Service Centennial Science and Stewardship Symposium. 2016. Fairbanks, AK (contrib. talk). Title: Contemporary models and aerial photographic monitoring methods for a new vital sign: Sea otters in Glacier Bay National Park.
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October 2016
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This talk presents methodology for monitoring sea otters in Glacier Bay, AK.
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Winkelman, D.L., M.M. McGree, A.R. Schwindt, and J. Anderson. Estrogenic exposure: Reproduction, survival, and the future of eastern plains native fishes. Regional Aquatic Days February 11, 2016. Colorado Parks and Wildlife. Denver, CO
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February 2016
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Our indicate that exposure to environmentally relevant concentrations of estrogen can result in complete reproductive failure and this may have population consequences. There appear to be transgenerational effects of exposure, mediated through parental exposure. Field caging experiments show that fish are being exposed to exogenous estrogens at levels that could indicate risk for reproductive failure.
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Winkelman, D.L., K. Thompson, and J. Terrell. 2006. The role of sediment size and other habitat factors in the abundance and relative dominance of Tubifex tubifex lineages. 12th annual Whirling Disease Symposium. Denver, CO.
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February 2006
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Winkelman, D.L., K. Thompson, and C. Clapp. 2008. Investigating the introduction
of resistant lineage T. tubifex as a potential biological control of whirling disease. 14th Annual Whirling Disease Symposium: Solving the Puzzle. Denver, CO.
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February 2008
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Winkelman, D.L., K. Thompson, C. Clapp, A. Gigliotti. 2010. Investigating the introduction
of resistant lineage T. tubifex as a potential biological control of whirling disease. Annual meeting of the Western Division of the American Fisheries Society. Salt Lake City, UT.
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April 2010
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Winkelman, D.L., Jordan Anderson, Alan Vajda, and Aaron Jastrow. Evaluating wastewater effluent exposure in wild fishes using insights from laboratory and wild populations. Society of Ecological Toxicology and Chemistry North America 39th annual meeting. November 7, 2018
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November 2018
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Our results indicate that the response of VTG production in laboratory raised FHM is more sensitive to estrogen exposure than VTG production in wild FHM, demonstrating that wild FHM seem to be acclimated or adapted to living in WWTP effluent compared to the naïve laboratory population. These results have consequences for the potential inferences being made between laboratory and wild populations and indicates that more research needs to be done to understand the differences between wild and laboratory raised populations
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Winkelman, D.L., B. Johnson, J. Schafler, R. Fitzpatrick, D. Gibson-Reinemer. 2006. Temporal variation in otolith elemental signatures: limitations for using otolith microchemistry to identify recruitment sources. Annual meeting of the American Fisheries Society Western Division. Bozeman, MT.
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May 2006
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Winkelman, D.L., A.R. Schwindt, K. Keteles, and M. McGree. Waste water effluent, estrogenic exposure, and the future of eastern plains native fishes. 2014 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society, March 4-6, Laramie, WY.
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March 2014
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Our results suggest that acute exposure to exogenous estrogens may cause reproductive failure, fish may not recover from early life exposure, and the population consequences could be catastrophic. Field caging experiments in waste water effluent in the South Platte River clearly show that previously unexposed fathead minnows are being exposed to exogenous estrogens at levels that could indicate risk for reproductive failure.
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Winkelman, D.L. and R. Fitzpatrick. 2006. Estimating sources of northern pike (Esox lucius) recruitment in the Yampa River, using otolith microchemistry. Upper Colorado River Researchers annual meeting. Moab, UT.
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February 2006
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Winkelman, D.L. and R. Fitzpatrick 2005. Estimating sources of northern pike (Esox lucius) recruitment in the Yampa River, using otolith microchemistry. Upper Colorado River Working Group annual meeting. Grand Junction, CO.
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February 2005
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Winkelman, D.L. and D. Walters. Rocky Mountain Streams Past and Present: The Influence of Forest Stand Age and Wood Deposition on Trout and Insect Biomass. Colorado Water Center. April 20, 2015. Fort Collins, CO
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April 2015
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The deposition of large wood influences brook trout and aquatic macroinvertebrate biomass.
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Winkelman, D.L. and A.R. Schwindt. Using stochastic stage-structured models to evaluate the effects of estrogenic exposure on population growth rate in a short-lived fish.
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November 2014
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Despite the recent use of population models in ecotoxicology, few models incorporate variance in vital rates or evaluate the importance of variation on population dynamics. Our modeling indicates that estrogens significantly influence stochastic PGR even though empirical data may indicate that some vital rates are not influenced by exposure. We also demonstrate that adult fecundity and juvenile survival are most important for sustaining populations of fathead minnows (Pimephales promelas), and probably other species with similar life histories. We recommend the inclusion of stochastic population models with sensitivity analysis as tool for evaluating the effects of chemical stressors at multiple levels of biological organization.
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Winkelman, D.L. and A. Schwindt. 21 August, 2012. Understanding population level responses to EDC exposure on fish population dynamics. 142nd annual meeting of the American Fisheries Society, Minneapolis-St. Paul, MN.
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August 2012
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Winkelman, D.L. Overview of Cooperative Fish and Wildlife Unit Aquatic Research Projects. Annual Researchers Meeting of the Colorado Division of Wildlife. December 16, 2015. Fort Collins, CO
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December 2015
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A complete overview of the Colorado Unit Aquatic program to state cooperator.
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Winkelman, D.L. 2016, K. Keteles , A.R. Schwindt, and J. Anderson. Estrogenic exposure: Reproduction, Survival, and the future of eastern plains native fishes. Annual meeting of the Western Division of the American Fisheries Society. May 24, 2018. Anchorage, AK
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May 2018
|
Our data indicate that exposure to environmentally relevant concentrations of estrogen can result in complete reproductive failure and this may have population consequences. There appear to be transgenerational effects of exposure, mediated through parental exposure. Field caging experiments show that fish are being exposed to exogenous estrogens at levels that could indicate risk for reproductive failure.
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Winkelman, D.L. 2016, K. Keteles , A.R. Schwindt, and J. Anderson. Estrogenic exposure: Reproduction, Survival, and the future of eastern plains native fishes. 41st Annual meeting of the Western Division of the American Fisheries Society. April 22, 2016. Reno, NV.
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March 2016
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Our data indicate that exposure to environmentally relevant concentrations of estrogen can result in complete reproductive failure and this may have population consequences. There appear to be transgenerational effects of exposure, mediated through parental exposure. Field caging experiments show that fish are being exposed to exogenous estrogens at levels that could indicate risk for reproductive failure.
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Winkelman, D.L. 2010. Evaluation of the Flathead Catfish Population and Fishery on Lake Carl Blackwell, OK, with emphasis on the effects of Noodling. Conservation, Ecology, and Management of Catfish: The Second International Symposium
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June 2010
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Winkelman, D. L., W. L. Kendall, and M. C. Dzul. 2019. Introduction to the symposium on the use of autonomous PIT tag antennas for modeling vital rates and movement. American Fisheries Society and The Wildlife Society 2019 Joint Annual Conference, Reno, Nevada, 29 Sep - 3 Oct 2019.
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October 2019
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This work provides an overview of the realized and potential contribution of the use of autonomous PIT tag readers to modeling vital rates and movement of fish.
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Winkelman D.L., C. Clapp, and K. Thompson. 2006. Investigating competition among lineages of T. tubifex and the potential for biological control of whirling disease in natural streams. 12th annual whirling disease symposium. Denver, CO.
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February 2006
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Winkelman D.L. 26 February, 2004. Age and growth of flathead catfish in relation to exploitation in Oklahoma reservoirs. The American Fisheries Society Southern Division annual mid-year meeting. Oklahoma City, OK.
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February 2004
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Williams, P.J., M.B. Hooten, J.N. Womble, G.G. Esslinger, and M.R. Bower. Joint Statistical Meetings: ASA. Baltimore, MD (contrib. talk, 2nd author), 2017, Title: Optimal dynamic sampling of a spreading population.
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August 2017
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This talk describes how to optimally monitor sea otters in Glacier Bay.
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Williams, P.J., M.B. Hooten, J.N. Womble, G.G. Esslinger, and M.R. Bower. (2016). Contributed talk, Joint Statistical Meetings, Chicago, IL. Title: A spatio-temporal model for ecological colonizations.
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August 2016
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This talk describes a modeling approach for sea otters in Glacier Bay that is dynamic and can be fused with an adaptive monitoring design.
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Williams, P., M.B. Hooten, J.N. Womble, G.G. Esslinger, and M.R. Bower. International Statistical Ecology Conference. 2016. Seattle, WA. Contributed talk: A Spatio-Temporal Model to Infer Colonization Dynamics of Sea Otters in Glacier Bay, Alaska.
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June 2016
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This talk presents research on spatio-temporal modeling of sea otter population spread in Glacier Bay.
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Williams, P. J., C. R. Ely, W. L. Kendall, M. B. Hooten, and J. A. Schmutz. 2014. Population dynamics and management of Cackling Geese. 21st Annual Conference of The Wildlife Society, Pittsburgh, PA.
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October 2014
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This work integrates data sources for Cackling Geese into a population model that is then further integrated with management objectives to provide a decision framework for managing this species. Integrating harvest, subsistence, and crop depredation objectives has not been done before.
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White, G. C., and D. R. Anderson. September 2000. Advanced statistical principles for wildlife graduate students: Web-based learning approaches. 7th Annual Conference of The Wildlife Society, Nashville, TN.
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September 2000
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Vigil, E., J. Lepak, and D.L. Winkelman. Status and Life History Traits of Gill Lice Salmincola californiensis in Colorado
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August 2015
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Understanding impacts gill lice have on fish populations will help managers in the state mitigate the negative consequences of gill lice infestations.
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Vigil, E., J. Lepak, and D.L. Winkelman. Distribution, Prevalence and Intensity of Gill Lice Salmincola Californiensis in Colorado
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August 2015
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Relatively little information is known about gill lice, and a better understanding of their distribution and life history traits will help managers determine which fish populations may be most at risk of experiencing detrimental effects due to gill lice infestation, as well as mitigate the negative consequences due to these infections.
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Vigil, E., J. Lepak, D. Dreiling, D.L. Winkelman. Distribution and Life History Traits of Gill Lice Salmincola californiensis in Colorado
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February 2015
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Distribution and Life History Traits of Gill Lice Salmincola californiensis in Colorado
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Vigil, E., D.L. Winkelman, and G. Schisler. Interactions of the parasitic Gill Louse, Salmincola californiensis and salmonids in Colorado. 41st Annual meeting of the Western Division of the American Fisheries Society. April 23, 2016. Reno, NV.
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April 2016
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Relatively little information is known about gill lice, and a better understanding of their distribution and life history traits will help managers determine which fish populations may be most at risk of experiencing detrimental effects due to gill lice infestation, as well as mitigate the negative consequences due to these infections.
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Victoria J. Dreitz, N. Thompson Hobbs, Thomas H. Baker, Lisa L. Wolfe, Kenneth P. Burnham, Mary M. Conner, and Michael W. Miller. July 2002. Land-use impacts on the prevalence of chronic wasting disease in Colorado mule deer populations. Preparing for Emerging Diseases, 51st Annual Meeting of the Wildlife Diseases Association, Humboldt State University, Arcata, California.
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July 2002
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Tipton, J., M.B. Hooten, and S. Goring. Joint Statistical Meetings: ASA. Baltimore, MD (contrib. talk, 2nd author), 2017, Title: Reconstruction of Spatio-Temporal Temperature from Sparse Historical Records Using Robust Probabilistic Principal Component Regression.
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August 2017
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This talk describes how to reconstruct temperature from historical observational data.
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Tipton, J., M.B. Hooten, R. Booth, C. Nolan. Joint Statistical Meetings, Chicago, IL (2016). Multivariate Bayesian networks for modelling multispecies ecological communities and paleoclimate reconstruction. Contributed Talk.
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August 2016
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This talk describes how to model microorganism data from bogs to reconstruct historical water levels.
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Terrell, J. W., and E. P. Bergersen. 2003. Predicting streambed particle size distributions that limit oligochaete densities. 9th Annual Whirling Disease Symposium, Managing the Risk, Seattle, Washington.
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February 2003
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Sipher, C. and E. Bergersen. March 2001. The effects of whirling disease on growth and survival of Snake River cutthroat and Colorado River rainbow trout fingerlings. Annual American Fisheries Society, Colorado/Wyoming Chapter Meeting, Cheyenne, WY.
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March 2001
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Sipher, C. R., and E. P. Bergersen. March 2001. The effects of whirling disease on growth and survival of Snake River cutthroat and Colorado River rainbow trout fingerlings. Front Range Student Ecology Symposium, Fort Collins, CO.
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March 2001
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Sipher, C. R., and E. P. Bergersen. March 2001. The effects of whirling disease on growth and survival of Snake River cutthroat and Colorado River rainbow trout fingerlings. Annual American Fisheries Society, Colorado/Wyoming Chapter Meeting, Cheyenne, WY.
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March 2001
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Sipher, C. R., and E. P. Bergersen. February 2002. The effects of whirling disease on growth and survival of Snake River cutthroat and Colorado River rainbow trout fingerlings. 8th Annual Whirling Disease Symposium, Putting a Fresh Spin on Whirling Disease, Denver, Colorado.
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February 2002
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Sipher, C. R., and E. P. Bergersen. February 2001. The effects of whirling disease on growth and survival of Snake River cutthroat and Colorado River rainbow trout fingerlings. 7th Annual Whirling Disease Symposium, Salt Lake City, UT.
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February 2001
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Sipher, C. R., and E. P. Bergersen. April 2001. The effects of whirling disease on growth and survival of Snake River cutthroat and Colorado River rainbow trout fingerlings. Colorado Division of Wildlife Aquatics Section Meeting, Montrose, CO.
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April 2001
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Shaffler, J. J., and D. L. Winkelman. 23 February 2005. Temporal and spatial variability in trace element signatures of juvenile striped bass otoliths. 16th Graduate Research Symposium, Oklahoma State University, Stillwater, OK.
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February 2005
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Shaffler, J. J., and D. L. Winkelman. 25 February 2005. Temporal and spatial variability in trace element signatures of juvenile striped bass. Annual Meeting of the Oklahoma Chapter of the American Fisheries Society, Broken Bow, OK.
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February 2005
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Setash, C.M., W. L. Kendall, and D. Olson. 2017. Adaptive nest site selection influences Cinnamon Teal nest survival in Colorado. 24th Annual Conference of The Wildlife Society, Albuquerque, NM.
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September 2017
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This work provides much needed baseline nesting ecology information for the modeling of cinnamon teal populations, and informs Monte Vista NWR management of wetlands and duck habitat.
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Setash, C., W. L. Kendall, and D. Olson. 2018. Cinnamon teal nest attendance influences nest survival during incubation. 25th Annual Conference of The Wildlife Society, Cleveland, OH.
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October 2018
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Little is known about the cinnamon teal, a harvested species. This paper partitions attendance patterns at the nest as incubation progresses and identifies effects on nest survival and thus productivity.
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Setash, C., W. L. Kendall, and D. Olson. 2016. Cinnamon teal breeding ecology in the San Luis Valley, Colorado. Annual Meeting of the Colorado Chapter of The Wildlife Society, Fort Collins, CO.
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February 2017
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This work adds to the little information available on Cinnamon Teal nesting ecology and vital rates.
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Setash, C., W. L. Kendall, and D. Olson. 2016. Cinnamon teal breeding ecology in the San Luis Valley, Colorado. 23rd Annual Conference of The Wildlife Society, Raleigh, NC.
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October 2016
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Information on cinnamon teal ecology to inform management decisions is limited. The breeding ecology parameters estimated in this work will contribute to population modeling of this species.
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Schisler, G., P. Walker, E. P. Bergersen, T. James, and C. Smith. 2003. Evaluation of oxytetracycline, dimilin, malarone and quinine for control of Myxobolus cerebralis. 9th Annual Whirling Disease Symposium, Managing the Risk, Seattle, Washington.
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February 2003
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Schisler, G. J., and E. P. Bergersen. February 2001. Evaluation of risk of high elevation waters to the establishment of Myxobolus cerebralis, the causative agent of whirling disease. 7th Annual Whirling Disease Symposium, Salt Lake City, UT.
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February 2001
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Schisler, G. J. and E. P. Bergersen. February 2000. Evaluation of single round polymerase chain reaction and pepsin-trypsin digest methods for the detection of Myxobolus cerebralis. 6th Annual Whirling Disease Symposium, Coeur d' Alene, ID.
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February 2000
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Scharf, H.R., M.B. Hooten, B.K. Fosdick, D.S. Johnson, J.M. London, and J.W. Durbin. (2016). ISEC, Seattle, WA. Dynamic social networks based on movement.
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June 2016
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This talk describes a social network modeling approach based on telemetry data.
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Scharf, H.R., M.B. Hooten, B.K. Fosdick, D.S. Johnson, J.M. London, and J.W. Durban. (2016). Joint Statistical Meetings, Chicago, IL. Title: Dynamic social networks based on movement.
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August 2016
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This talk describes a statistical approach to using telemetry data to identify dynamic social networks in killer whale populations.
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Scharf, H.J., M.B. Hooten, R.R. Wilson, G.M. Durner, and T.C. Atwood. (2018). Accounting for phenology in the analysis of animal movement. International Statistical Ecology Conference.
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July 2018
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This presentation describes a statistical approach for clustering populations given underlying movement and environmental phenology.
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Scharf, H., M.B. Hooten, D.S. Johnson, and J. Durban.
Joint Statistical Meetings: ASA. Baltimore, MD (topic contrib. talk, 2nd author), 2017, Title: Process convolution approaches for modeling interacting trajectories.
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August 2017
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This talk presents a method for analyzing telemetry data from multiple individuals simultaneously.
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Schaffler, J.J. 15 March 2004. Do fish use discharge as a cue for spawning? Larval fish abundance in the Red and Washita rivers. 15th Graduate Research Symposium, Oklahoma State University, Stillwater, OK.
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March 2004
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Schaffler, J. J., and D. L. Winkelman. 7 November 2003. Larval striped bass distribution and abundance in Lake Texoma. 92nd annual meeting of Oklahoma Academy of Science, Chickasha, OK.
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November 2003
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Schaffler, J. J., and D. L. Winkelman. 27 February 2004. Larval striped bass distribution and abundance in Lake Texoma, Oklahoma-Texas. 12th annual spring meeting of the Southern Division of the American Fisheries Society, Oklahoma City, OK.
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February 2004
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Ruiz-Gutierrez, V., W. L. Kendall, and J. Saracco. 2014. Overwintering dynamics of migratory birds: how to infer movement patterns using open multi-state models. 2014 Joint Meeting of the American Ornithologists Union, the Cooper Ornithological Society, and the Society of Canadian Ornithologists, Estes Park, CO.
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September 2014
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This work advances the ability to model transience in populations and its biological interpretation, by implementing new capture-recapture models.
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Ruiz-Gutierrez, V., W. L. Kendall, G. C. White, and J. Saracco. 2013. On the use of multistate open robust design state uncertainty models to account for and directly estimate transience under various definitions. Euring 2013 Analytical Conference.
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May 2013
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Estimation of the proportion of a population that are transients is of interest, whether to remove their influence from a population model, or to assess resource needs of individuals using an area. This work shows how to estimate this under various definitions of transience.
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Ross, B.E., M.B. Hooten, and D.N. Koons. 2017. Evaluating the inference from dynamic occupancy models relative to population abundance. American Ornithology 2017, Michigan.
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July 2017
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We compare inference between parameters in dynamic occupancy models to population abundance for lesser and greater scaup from 1957-2015. Our results indicate that decreases in abundance may not be detected using occupancy models.
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Rohwer, K., A.T. Herdrich, D.L. Winkelman. The Effects of Land Use, In-stream Wood and Insect Populations on Salvelinus fontinalis Density, Growth and Diet
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February 2015
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The increased fish density places greater pressure on the invertebrate populations, leading to a decrease in invertebrate density. The data we have establishes that in-stream wood affects the percent of lipids stored; however we would like to collect data from additional streams to establish a definite pattern.
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Response of fathead minnow populations to an exogenous estrogen used in human birth control.
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May 2011
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Response of fathead minnow populations to an exogenous estrogen used in human birth control.
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February 2011
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Presented, Burnham and White, Evaluation of some Bayesian MCMC random effects inference applicable to bird ringing data, and Burnham, 'Computing issues concerning hierarchical models.' Presented a poster, "Profile likelihood intervals: a new feature of program MARK to solve a problem of 'standard theory'."
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October 2003
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Pettigrew, E.J., D.L. Winkelman, D. Walters, M. Venarsky, A. Herdrich. Effects of in-stream large wood on fish diets.
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February 2015
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Analyses of insect biomass and production are ongoing; however, it appears that differences in diet can at least partially be explained by differences in insect community between the sites. It appears that fish consumption may help explain differences in fish biomass and individual growth observed between the sites and will aid in understanding how large wood influences ecosystem function.
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Peck, C., B.D. Gerber, and M.B. Hooten. Joint Statistical Meetings: ASA. Baltimore, MD (contrib. talk, 3rd author), 2017, Title: Hierarchical Bayesian models for azimuthal telemetry data.
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August 2017
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This talk presents a method for analyzing VHF telemetry data.
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Pearson, K., W. Kendall, D.L. Winkelman, and W Persons. Spawning probability of humpback chub, Gila cypha, in the Little Colorado River, Arizona. 2014 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society, March 4-6, Laramie, WY.
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March 2014
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Understanding the spawning strategy of humpback chub in the LCRB is essential to accurately estimate demographic parameters because, as our research indicates, humpback chub are not annually present in the LCR.
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Pearson, K., W. Kendall, D. Winkelman, and W. Persons. 2014. Spawning strategy of the endangered humpback chub in the Little Colorado River with implications for estimability of demographic parameters necessary for species recovery. Society for Conservation Biology Conference, Missoula, MT.
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July 2014
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This work provides unbiased estimates of adult survival, breeding probability, and breeding population size for the endangered humpback chub. Models of population dynamics can now be more robust.
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Participated in the technical meeting EURING 2003, Oct. 6-10, 2003 in Radolfzell, Germany. The Quantitative Study of Marked Individuals in Ecology, Evolution and Conservation Biology.
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October 2003
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Orabutt, D., and E. Bergersen. 2003. Northern pike and trout interactions in high elevation trout reservoirs in Colorado. American Fisheries Society Esocids Technical Committee Meeting, Minaqua, Minnesota.
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July 2003
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Orabutt, D., Jr., and E. P. Bergersen. Northern pike in high elevation reservoir trout fisheries. American Fisheries Society Student Chapter Meeting, Colorado State University, Fort Collins, Colorado.
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January 2003
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Nambiar, R., D. L. Winkelman, D. M. Leslie, Jr., and T. Boyer. 7 November 2003. Zooplankton community structure in ephemeral wetlands on the Tallgrass Prairie Preserve, Pawhuska, Oklahoma. 92nd annual meeting of Oklahoma Academy of Science, Chickasha, OK.
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November 2003
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Multimodel inference: Understanding AIC and BIC in model selection. Conference on New Developments of Statistical Analysis in Wildlife, Fisheries and Ecological Research (The Fifth Winemiller Symposium), October 13-16, 2004 at the University of Missouri. Sponsored by NSF and the University of Missouri and hosted by the University of Missouri Department of Statistics.
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October 2004
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Millsap, B., G. S. Zimmerman, W. L. Kendall, F. Abadi, and J. V. Gedir. 2020. An integrated population model to inform management of permitted take of bald eagles in the United States. Ecological Society of America Annual Conference, Salt Lake City Utah, 2 August to 7 August, 2020.
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August 2020
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This work demonstrates a tool for integrating multiple monitoring data streams to model the dynamics of bald eagles and implications for incidental take and permitting decisions.
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Milhous, R. T., J. W. Terrell, and E. P. Bergersen. 2002. Sediment as habitat for worms associated with whirling disease. Annual Meeting of Rocky Mountain Hydrologic Research Center, Denver, Colorado.
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December 2002
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McGree, Michelle, D.L. Winkelman, and N. Viera. 2008. An estrogenic endocrine disruptor alters reproductive behaviors and fecundity of the red shiner. Annual Meeting of the Western Division of AFS. Portland, OR.
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May 2008
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McGree, M.M., D.L. Winkelman, and N. Vieira. 2009. Exposure to 17β-estradiol reduces reproductive success of the Adult Red Shiner (Cyprinella lutrensis). 2nd International Conference on Occurrence, Fate, Effects, and Analysis of Emerging Contaminants in the Environment. Fort Collins, CO.
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August 2009
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McGree, M., D.L. Winkelman, and N. Viera. 2008. An estrogenic endocrine disruptor alters reproductive behaviors and fecundity of the red shiner. Annual Meeting of CO-WY Chapter of the American Fisheries Society. Cheyenne, WY.
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February 2008
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McGree, M. M., D. L. Winkelman, and N. K. Vieira. 2007. The effects of an estrogenic endocrine disruptor on male red shiner reproduction: behavior, secondary sexual traits, and development. Rocky Mountain Society of Toxicology and Chemistry, Golden, CO (April).
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April 2007
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McGree, M. M., D. L. Winkelman, and N. K. Vieira. 2007. The effects of an estrogenic endocrine disruptor on male red shiner reproduction: behavior, secondary sexual traits, and development. Colorado/Wyoming Meeting of the American Fisheries Society, Fort Collins, CO (March).
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March 2007
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McGree, M. M., D. L. Winkelman, and N. K. Vieira. 2007. The effects of an estrogenic endocrine disruptor on male red shiner (Cyprinella lutrensis) reproduction: behavior, secondary sexual traits, development, and productivity. National Meeting of the American Fisheries Society, San Francisco, CA (September).
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September 2007
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McGree, M. M., D. L. Winkelman, and N. K. M. Vieira. 2008. An estrogenic endocrine disruptor alters the reproductive behaviors and fecundity of the red shiner. Colorado State University Department of Fish, Wildlife, and Conservation Biology Departmental Seminar, Fort Collins, CO (March).
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March 2008
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Mauck, M., and D. L. Winkelman. 7 November 2003. Survival and condition of age-0 striped bass in Lake Texoma. 92nd annual meeting of the Oklahoma Academy of Science, Chickasha, OK.
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November 2003
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Mauck, M., and D. L. Winkelman. 27 February 2004. Factors influencing first year recruitment of striped bass in Lake Texoma. 12th annual spring meeting of the Southern Division of the American Fisheries Society, Oklahoma City, OK.
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February 2004
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Mauck M. and D.L. Winkelman. 2005. Factors Influencing First Year Recruitment of Striped Bass in Lake Texoma. 59th annual meeting of the Southeastern Association of Fish and Wildlife Agencies. St. Louis, MO.
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October 2005
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Lukacs, P.M., and K. P. Burnham. Statistical aspects of using genetic markers for individual identification in capture-recapture studies. 10th Annual Wildlife Society Conference, Burlington, Vermont.
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September 2003
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Lukacs, P.M. and Burnham, K.P. 2003. Statistical aspects of using genetic markers for individual identification in capture-recapture studies. 3rd International Wildlife Management Congress, Christchurch, New Zealand.
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September 2003
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Lukacs, P.M. and Burnham, K.P. 2003 Statistical aspects of using genetic markers for individual identification in capture-recapture studies. EURING Technical Meeting, Radolfzell, Germany.
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September 2003
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Lisa L. Wolfe, Mary M. Conner, Thomas H. Baker, Victoria J. Dreitz, Kenneth P. Burnham, Elizabeth S. Williams, N. Thompson Hobbs, and Michael W. Miller. July 2002. Evaluation of tonsillar biopsy data for estimating chronic wasting disease prevalence in free-ranging mule deer. Preparing for Emerging Diseases, 51st Annual Meeting of the Wildlife Diseases Association, Humboldt State University, Arcata, California.
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July 2002
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Larkin, K and D.L. Winkelman. 2009. Colorado River cutthroat trout restoration: conservation planning and watershed prioritization tools for today’s managers. Annual meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Fort Collins, CO.
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February 2009
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Lambert, S. M., P. Ersts, M. Alldredge, W. L. Kendall, and R. Beveridge. 2021. Methods and applications for integrating A.I. photo-filtering software into camera surveys. 2021 Annual Meeting of the Colorado Chapter of The Wildlife Society (virtual).
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February 2021
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Trail cameras provide a wealth of information on species presence, relative abundance, and age-structure, but extracting information from hundreds of thousands of photos is very time-consuming and therefore budgetarily expensive. This work demonstrates the power of machine learning approaches to automate the extraction of information to reduce time and effort considerably, and allow the use of this data for research and management in a timely manner.
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Kowalski, D., and E. P. Bergersen. February 2002. Toxicity of bayluscide and TFM to different lineages of Tubifex Tubifex: implications for the chemical control of oligochaetes. 8th Annual Whirling Disease Symposium, Putting a Fresh Spin on whirling Disease, Denver, Colorado.
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February 2002
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Kowalski, D. and E. Bergersen. March 2001. Preliminary investigations on the efficacy of chemical control of Tubifex tubifex on the incidence of whirling disease in Colorado hatcheries. Annual American Fisheries Society, Colorado/Wyoming Chapter Meeting, Cheyenne, WY.
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March 2001
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Kowalski, D. and E. Bergersen. February 2001. Preliminary investigations on the efficacy of chemical control of Tubifex tubifex on the incidence of whirling disease in Colorado hatcheries. 7th Annual Whirling Disease Symposium, Salt Lake City, UT.
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February 2001
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Kowalski, D. and E. Bergersen. April 2001. Preliminary investigations on the efficacy of chemical control of Tubifex tubifex on the incidence of whirling disease in Colorado hatcheries. Colorado Division of Wildlife Aquatic Section Meeting, Montrose, CO.
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April 2001
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Keteles, K., D.L. Winkelman, J. Lazorchak, D. Villeneuve, D. Ekman, A. Vajda, and T. Collette. Use of bioactivity tools to measure estrogenic mixtures below WWTPs with differing treatment technologies. SETAC North America 36th annual meeting, Salt Lake City, UT.
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November 2015
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Biomonitoring of vtg expression appears to be a useful screening tool to determine exposure to estrogenic mixtures especially when used in concert with metabolomics and in vitro tools.
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Kendall, W. L., R. Y. Conrey, and J. H. Gammonley. 2020. Multistage nest survival: a hidden Markov model approach when nest age or stage is uncertain. The Wildlife Society 2020 Annual Conference, 28 Sep - 2 Oct 2020.
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September 2020
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The method for modeling nest survival in this work provides the ability to properly model nest survival when the age of the nest at discovery is not known. This is especially useful for raptor nests and others where eggs cannot be examined to determine age.
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Kendall, W. L., R. C. Drewien, W. Brown, and B. D. Gerber. 2014. Pre- and post-harvest mortality sources and survival of the Rocky Mountain Sandhill Crane. 21st Annual Conference of The Wildlife Society, Pittsburgh, PA.
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October 2014
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This work illustrates for the first time that sandhill cranes have very low natural mortality rates (0.06), and that harvest mortality is compensatory for adults, in the face of low to moderate harvest pressure.
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Kendall, W. L., K. N. Pearson, P. H. Dutton, K. R. Stewart, and C. Lombard. 2018. Life history and demography of a nesting population of leatherback sea turtles (Dermochelys coriacea) at St. Croix, U. S. Virgin Islands, 1992-2013. 25th Annual Conference of The Wildlife Society, Cleveland, OH.
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October 2018
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Understanding the mechanism by which this threatened species is changing in population size, whether by change in survival or productivity, is important to its conservation. We partition these elements for a nesting population of leatherbacks.
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Kendall, W. L., K. N. Pearson, P. H. Dutton, K. R. Stewart, and C. Lombard. 2017. Life history and demography of a nesting population of leatherback sea turtles (Dermochelys coriacea), U. S. Virgin Islands, 1992-2013. 37th Annual Symposium on Sea Turtle Biology and Conservation. Las Vegas, NV.
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April 2017
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This work identifies the population status of this threatened species, and life history patterns that could be influenced by environmental factors.
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Kendall, W. L., G. C. White, L. Cordes, and B. W. Meixell. 2013. Estimating parameters under state uncertainty when events are seasonal. Euring 2013 Analytical Conference,
Athens, Georgia.
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May 2013
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This work extends capture-recapture methodology to estimate demographic parameters in the face of uncertainty about phenotypic state, while acknowledging that indicators of state only occur seasonally. Thus bias in population models can be minimized.
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Kendall, W. L., D. L. Winkelman, M. C. Dzul, and C. B. Yackulic. 2019. Estimating vital rates and movement using autonomous PIT tag antennas: a design and analysis framework. American Fisheries Society and The Wildlife Society 2019 Joint Annual Conference, Reno, NV.
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October 2019
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This work provides a framework for designing and robustly analyzing PIT tagging data for population parameters.
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Kendall, W. L., C. A. Langtimm, M. M. Lamont, M. Randall, R. S. Wells, K. M. Hart, C. A. Beck, and A. L. Teague. 2016. Assessing the potential of a monitoring network for the Gulf of Mexico based on large vertebrate species. 2016 Gulf of Mexico Oil Spill and Ecosystem Science Conference, Tampa, FL.
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February 2016
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This talk outlines how resighting data on a number of high profile species in the Gulf of Mexico could be integrated to assess system health of the Gulf, providing baseline or evaluation of impacts.
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Kendall, W. L., C. A. Langtimm, C. A. Beck, K. A. Rood, S. L. Barton, and A. L. Teague. 2016. Using continuous-time resighting data to improve inference from multistate mark-recapture studies.
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October 2016
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The model presented here will provide a more flexible framework for incorporating auxiliary sighting data into analyses of mark-recapture data, increasing precision and in some cases improving the estimability of parameters.
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Kendall, W. L. Robust demographic studies of sea turtles from an ensemble of data sources. 34th Annual Symposium on Sea Turtle Biology and Conservation. New Orleans, LA, USA.
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April 2014
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This paper indicates how data sources can be integrated into more robust inference, at a time when advances in technology are making demographic modeling of sea turtles ever more possible.
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Kendall, W. L. 2020. Contributions of banding data to the development of avian demography and capture-recapture modeling. North American Ornithological Conference 2020, 11-16 August 2020.
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August 2020
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This presentation illustrates the value and contribution of the Bird Banding Laboratory and bird banding in general to the study of avian demography and the development of capture-recapture methodology for ecologists.
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Kendall, W. L. 2017. The multistate model as an omnibus framework for robust inference from mark-recapture studies. 24th Annual Conference of The Wildlife Society, Albuquerque, NM.
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September 2017
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This talk lays out how multistate models provides a framework for modeling a wide variety of data and hypotheses within population studies.
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Kendall, W. L. 2015. Robust inference from seabird demographic studies through a synergy among hypotheses, design, and analytical tools. 2nd World Seabird Conference, Cape Town, South Africa, October 26-30, 2015.
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October 2015
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This talk shows how the robustness and efficiency of seabird studies can be maximized by close attention to both the type of data to collect (design) and the types of models that can be useful (analysis).
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J.E. Cavallin, W.A Battaglin, J. Beihoffer, B.R. Blackwell, P.M. Bradley, D.R. Eckman, J. Kinsey, K. Keteles, E.Lai, R. Weissinger, D.L. Winkelman, and D.L. Villeneuve. Effects-based monitoring of bioactive contaminants associated with exposure to a wastewater treatment plant discharge on the Colorado River. Society of Ecological Toxicology and Chemistry North America 39th annual meeting. November 6, 2018
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November 2018
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Results suggest rapid dilution of biologically-active contaminants downstream of the WWTP discharge and will be discussed relative to the potential effects of CECs in the Colorado River.
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Itter, M., A. Finley, M.B. Hooten, P. Higuera, J. Marlon, and J. McLachlan. (2016) American Geophysical Union Annual Mtg. San Francisco, CA (contrib. talk, 3rd author).
Title: A Model-Based Approach to Infer Shifts in Regional Fire Regimes Over Time Using Sediment Charcoal Records.
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December 2016
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This talk describes a statistical method for separating background and foreground historic fire events based on charcoal records.
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Hooten, M.B., H.R. Scharf, T.J. Hefley, A.T. Pearse, M.D. Weegman. (2018). Animal movement models for migratory individuals and groups. The Wildlife Society Annual Meeting, Cleveland, OH. Invited Talk.
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October 2018
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This talk describes flexible animal movement models for telemetry data.
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Hooten, M.B. and J.M. Morales. (2018). Animal movement models for recharge dynamics. International Statistical Ecology Conference.
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July 2018
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This presentation describes models for animal trajectories that rely on an underlying recharge process associated with obtaining and expending energy.
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Hooten, M.B. and D.S. Johnson. Joint Statistical Meetings, Chicago, IL. (2016). Basis function approaches for continuous-time Lagrangian movement modeling. Invited Talk.
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August 2016
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This talk describes a new approach for modeling animal movement telemetry data by smoothing Brownian motion.
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Hooten, M.B. (2015) IALE World Congress, Portland, OR. Invited Talk: Statistical dimension reduction and computation in spatial ecology.
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July 2015
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This talk covers different approaches for efficient statistical computation and model construction.
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Hooten, M.B. (2014). Linking long-distance animal movement behavior and landscapes using multiscale functional models. Invited Presentation. Graybill Conference. Fort Collins, CO.
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September 2014
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This talk describes methods for better understanding long-distance behavior in animals using telemetry data.
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Hooten, M.B. The International Environmetrics Society Meeting. (2016). A progression in G: time series, spatial statistics, and the trajectories of ecological particles. Invited Plenary Seminar.
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July 2016
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This talk describes statistical methods for analyzing animal movement telemetery data.
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Hooten, M.B. (2018). Optimal adaptive monitoring: Past, present, and future. The Wildlife Society Annual Meeting, Cleveland, OH. Invited Talk.
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October 2018
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This talk describes the history and state of the art associated with optimal adaptive monitoring strategies in ecology.
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Hooten, M.B. (2015) Joint Statistical Meetings, Seattle, WA. Invited Talk. Title: Linking Long-Distance Animal Movement Behavior and Landscapes Using Multiscale Functional Models.
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August 2015
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This talk describes functional modeling techniques for animal movement data.
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Hooten, M.B. (2014). Fringe Benefits: The hidden utility of movement constraints in telemetry studies. Invited Presentation. International Statistical Ecology Conference. Montpellier, France.
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July 2014
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This presentation describes methods for utilizing telemetry data and natural constraints to movement to estimate and account for telemetry error in animal space use studies.
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Herdrich, A.T., D.L. Winkelman, and D. Walters. Effects of large wood and log jams on eastern slope Rocky Mountain trout populations. 41st Annual meeting of the Western Division of the American Fisheries Society. April 23, 2016. Reno, NV.
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August 2016
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Large wood influences the amount of habitat available for insects and fish and increased trout density at sites with high amounts of large wood and is due to large wood modifying physical habitat. Our data indicates a potential loss in fish production in valleys with reduced channel complexity.
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Herdrich, A.T., D.L. Winkelman, and D. Walters. Effects of large wood and log jams on eastern slope Rocky Mountain trout populations. 41st Annual meeting of the Western Division of the American Fisheries Society. April 23, 2016. Reno, NV.
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April 2016
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Large wood influences density of brook trout populations by creating pool habitat.
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Herdrich, A.T., D.L. Winkelman, and D. Walters. Effects of Large Wood and Log Jams on Eastern Slope Rocky Mountain Trout Populations.
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August 2015
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Our results indicate potential losses in insect and fish production at sites historically cleared of large wood and suggests a minimum level of wood loading to ensure consistent fish densities.
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Herdrich, A.T., D.L. Winkelman, D. Walters. Effects of Large Wood and Log Jams on Eastern Slope Rocky Mountain Trout Populations
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February 2015
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Our goals are to understand how LW influences trout biology and ultimately fish population density. Our results will be beneficial for managers in evaluating specific endpoints for stream restoration projects in high-elevation streams.
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Herdrich, A.T., D. Walters, and D.L. Winkelman. Effects of Large Woody Debris and Log Jams on Eastern Slope Rocky Mountain Trout Populations. 2014 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society, March 4-6, Laramie, WY.
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March 2014
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I examine how trout populations in high elevation, eastern slope streams along northern Colorado’s Front Range are affected by Large Woody Debris (LWD) by comparing streams with high amounts of in-stream LWD to streams with medium and low amounts of LWD. Trout densities were generally highest in streams with large quantities of LWD and lowest in streams in which LWD was minimal or absent.
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Hefley, T.J., M.B. Hooten, E.M. Hanks, D.P. Walsh, and R.E. Russell. International Statistical Ecology Conference. 2016. Seattle, WA. (contributed talk) Title: Confounding in dynamic ecological processes.
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June 2016
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This presentation describes the importance of spatio-temporal dynamics in forming spatial ecological processes.
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Hefley, T., M.B. Hooten, E.M. Hanks, D. Walsh, R. Russell. (2016). Contributed talk. Joint Statistical Meetings, Chicago, IL. Title: Dynamically induced spatial confounding.
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August 2016
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This talk describes a type of confounding that can complicate estimation in spatial statistical settings that arises due to latent dynamics.
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Hefley, T., M.B. Hooten, D. Walsh, and R. Russell. (2017) Expansion and Growth of Chronic Wasting Disease in Wisconsin. Midwest Fish and Wildlife Conference. Lincoln, NE.
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February 2017
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This talk presents finding based on spatio-temporal modeling of CWD in Wisconsin.
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Gibson-Reeinemer, D., B. Johnson, D.L. Winkelman. 2006. Use of otolith microchemistry to identify origin of hatchery-reared rainbow trout. . Annual meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Cheyenne WY.
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January 2006
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Gerber, B. Kendall, W. Hooten, M., Dubovsky, J., Drewien, R. Predicting Juvenile Sandhill Crane Production From Ecologically-Driven Hypotheses Using Statistical Regularization
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October 2014
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Presentation of dissertation work at the national annual Wildlife Society Conference. The authors demonstrate a predictive model of juvenile sandhill crane recruitment from the Rocky Mountain Population.
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Gerber, B. D., W. L. Kendall, J. A. Dubovsky, R. C. Drewien, and M. B. Hooten. Annual variation of young of the year in the Rocky Mountain Population of Sandhill Cranes. 13th North American Crane Workshop. Lafayette, LA, USA.
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April 2014
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Relating recruitment to climatic variables will inform sandhill crane harvest management in the short term, and help predict the implications of climate change on cranes in the long term.
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Fraser, G., K.R. Bestgen, D.L. Winkelman. 2014. Use of Coal Creek,White River drainage by flannelmouth and bluehead sucker. 2014 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society, March 4-6, Laramie, WY.
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March 2014
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Recapture data showed site fidelity, as reproductively ready suckers returned to Coal Creek the year after tagging. Antennae data also show that suckers leave Coal Creek immediately after they have been trapped and handled, which confounds our ability to estimate demographic parameters that require closed population assumptions. Our data show that tributaries are important for native suckers in the upper White River. Protecting and enhancing these habitats should be a priority conservation action.
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Fraser, G., K.R. Besten, D.L. Winkelman, and K. Thompson. Flannelmouth and bluehead sucker tributary use in Coal Creek, CO.
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January 2014
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My project will enhance our understanding of the role that temperature plays in the life history of these species, the use of tributaries, spawning site fidelity and how handling influences fish behavior thus providing data to inform better decisions about the conservation of these native fish.
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Franklin, A.B., Lukacs, P.M., Anderson, D.R. 2003. A new design to estimate density of trappable organisms: the trapping line transect. 3rd International Wildlife Management Congress, Christchurch, New Zealand.
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April 2003
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Franklin, A. B., K. P. Burnham, G. C. White, R. J. Anthony, E. D. Forsman, C. Schwarz, J. D. Nichols and J. Hines. November 1999. Range-wide status and trends in northern spotted owl populations. 1999 Raptor Research Foundation Annual Meeting, La Paz, Mexico.
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November 1999
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Franklin, A. B., D. R. Anderson, and K. P. Burnham. October 2000. Estimation of long-term trends and variation in avian survival probabilities using random effects models. EURING 2000, Marshal, CA.
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October 2000
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Fitzpatrick, R. and D.L. Winkelman. 2006. Identifying sources of northern pike recruitment in the Yampa River using otolith elemental signatures. 136th annual meeting of the American Fisheries Society. Lake Placid, NY.
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September 2006
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Fitzpatrick, R. and D.L. Winkelman. 2006. Identifying sources of northern pike (Esox lucius) recruitment in the Yampa River, using otolith microchemistry. Annual meeting of the Colorado-Wyoming Chapter of the American Fisheries Society annual meeting. Cheyenne WY.
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January 2006
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Fitzpatrick, R. M and D. L. Winkelman. September 2006. Estimation of recruitment sources and movement of northern pike (Esox lucius) using otolith microchemistry. American Fisheries Society National Meeting. Lake Placid, NY.
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September 2006
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Fitzpatrick, R. M and D. L. Winkelman. 27 February 2007. Estimation of recruitment sources and movement of northern pike (Esox lucius) using otolith microchemistry. Colorado/Wyoming meeting of the American Fisheries Society. Fort Collins, CO.
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February 2007
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Fitzpatrick, R. M and D. L. Winkelman. 15 February 2006. Estimation of recruitment sources and movement of northern pike (Esox lucius) using otolith microchemistry. Colorado/Wyoming meeting of the American Fisheries Society. Cheyenne, WY.
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February 2006
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Fitzpatrick, R. M and D. L. Winkelman. 15 February 2005. Estimation of recruitment sources and movement of northern pike (Esox lucius) using otolith microchemistry. Colorado/Wyoming meeting of the American Fisheries Society. Fort Collins, CO.
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February 2005
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Fetherman, E. and G. Schisler. 13 February 2007 Inheritance of Myxobolus cerebralis resistance among second generation crosses between the Hofer and Colorado River Rainbow trout strains. 13th annual Whirling Disease Symposium. Denver, CO.
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February 2007
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Fetherman, E. R., K. Davies, G. J. Schisler, K. Kehmeier, and D. L. Winkelman. 2011. Demented fish racists: Analyzing rainbow trout introductions in brown trout dominated streams. Great Plains Fishery Workers Association Meeting. Sidney, Nebraska. February 2, 2011.
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February 2011
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Fetherman, E. R., G. J. Schisler, and D. L. Winkelman. 2008. Whirling disease and the Colorado River. Special Meeting of the Chimney Rock Ranch Fishing Club. Denver, Colorado.
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July 2008
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Fetherman, E. R., G. J. Schisler, and D. L. Winkelman. 2007. Inheritance of Myxobolus cerebralis resistance among second generation crosses between the Hofer and Colorado River Rainbow trout strains. Annual meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Fort Collins, CO.
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February 2007
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2011. Whirling disease resistant rainbow trout in Colorado: Introductions, monitoring, and brown trout removal. Annual Meeting of the Colorado Aquaculture Association. Mt. Princeton Hot Springs, Colorado.
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January 2011
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2011. Brown trout removal in the Cache la Poudre River, Colorado: Managing whirling disease resistant rainbow trout introductions in brown trout dominated streams. National American Fisheries Society Annual Meeting. Seattle, Washington.
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September 2011
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2010. Whirling disease resistant rainbow trout 2009 project update. Whirling Disease Symposium. 2010 Annual Meeting of the Western Division of the American Fisheries Society. Salt Lake City, Utah.
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April 2010
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2010. Whirling disease resistant rainbow trout 2009 project update. 2010 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Laramie, Wyoming.
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March 2010
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2009. Physiological effects of whirling disease and heritability of myxospore count in susceptible and resistant strains of rainbow trout. Annual Meeting of the Colorado Aquaculture Association. Mt. Princeton Hot Springs, Colorado.
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January 2009
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2009. Physiological effects of whirling disease and heritability of myxospore count in susceptible and resistant strains of rainbow trout. 15th Annual Whirling Disease Symposium: Conserving Coldwater Fisheries. Denver, Colorado.
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February 2009
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2009. Heritability of myxospore count and genetic correlations in whirling disease resistant and susceptible strains of rainbow trout. 2009 Annual Meeting of the Western Division of the American Fisheries Society. Albuquerque, New Mexico.
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May 2009
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2009. Heritability of myxospore count and genetic correlations in whirling disease resistant and susceptible strains of rainbow trout. 2009 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Loveland, Colorado.
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February 2009
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2008. The physiological effects of whirling disease in resistant and susceptible crosses of rainbow trout. 2008 Annual Meeting of the Western Division of the American Fisheries Society. Portland, Oregon.
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May 2008
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2008. The physiological effects of whirling disease in resistant and susceptible crosses of rainbow trout. 2008 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Cheyenne, Wyoming.
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March 2008
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2008. The physiological effects of whirling disease in resistant and susceptible crosses of rainbow trout. 14th Annual Whirling Disease Symposium: Solving the Puzzle. Denver, Colorado.
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February 2008
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Fetherman, E. R., D. L. Winkelman, and G. J. Schisler. 2008. The Physiological Effects of Whirling Disease in Resistant and Susceptible Crosses of Rainbow Trout. Annual Meeting of the Colorado Aquaculture Association. Mt. Princeton Hot Springs, CO.
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January 2008
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Fetherman, E. R., D. L. Winkelman, G. J. Schisler, L. Bailey, and W. L. Kendall. 2011. Multistate modeling approach for analyzing survival and movement of Radio Frequency Identification (RFID) PIT tagged trout in rivers. National American Fisheries Society Annual Meeting. Seattle, Washington.
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September 2011
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Fetherman, E. R., D. L. Winkelman, G. J. Schisler, K. Davies, and K. Kehmeier. 2011. Brown trout removal in the Cache la Poudre River: The next step in whirling disease resistant rainbow trout management. 2011 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society and the Colorado Chapter of The Wildlife Society. Fort Collins, Colorado.
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February 2011
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Fetherman, E. R. 2008. The physiological effects of whirling disease in resistant and susceptible crosses of rainbow trout. Departmental Seminar for the Department of Fish, Wildlife and Conservation Biology, Colorado State University. Fort Collins, Colorado.
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September 2008
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Drewien, R. C., W. L. Kendall, W. Brown, and B. D. Gerber. Survival of the Rocky Mountain Sandhill Crane. 13th North American Crane Workshop. Lafayette, LA.
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April 2014
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Evidence about survival processes from this work will directly inform the population and especially harvest management of sandhill cranes.
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DeCoste, J, R. Y. Conrey, W. L. Kendall, and J. Gammonley. 2017. Nest survival of bald eagles in Colorado. Annual Meeting of the Colorado Chapter of the The Wildlife Society, Fort Collins, CO.
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February 2017
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This work provides estimates of nest survival of bald eagles in Colorado as a function of various putative factors. It also demonstrates the potential for bald eagle monitoring within the state of Colorado
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D'Amico, T.W., T. Swarr, D.L. Winkelman, and C.M. Myrick. PIT tag retention in a small-bodied native catfish. 2018 Annual Meeting of the Western Division of the American Fisheries Society. Laramie, WY.
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May 2018
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Our best model included the covariates age, cohort (a proxy measure for technician experience with tagging), fish length, and tag type as well as the interaction between fish length and tag type. We also analyzed the individual effect of each of these covariates on tag expulsion. Results will be used to inform survival and movement estimation as well as habitat selection in our field study.
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D'Amico, T.W., T. Swarr, D.L. Winkelman, and C.M. Myrick. PIT tag retention in a small-bodied native catfish. 2018 Annual Meeting of the Western Division of the American Fisheries Society, Anchorage, AK
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February 2018
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Our best model included the covariates age, cohort (a proxy measure for technician experience with tagging), fish length, and tag type as well as the interaction between fish length and tag type. We also analyzed the individual effect of each of these covariates on tag expulsion. Results will be used to inform survival and movement estimation as well as habitat selection in our field study.
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D'Amico, T.W., T. Swarr, D.L. Winkelman, and C.M. Myrick. PIT tag retention in a small-bodied native catfish. 2018 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Laramie, WY.
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February 2018
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Our best model included the covariates age, cohort (a proxy measure for technician experience with tagging), fish length, and tag type as well as the interaction between fish length and tag type. We also analyzed the individual effect of each of these covariates on tag expulsion. Results will be used to inform survival and movement estimation as well as habitat selection in our field study.
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D'Amico, T.W., D.L. Winkelman, and F.B. Wright. Habitat selection and movement of stonecat in St. Vrain Creek, CO. 2018 Annual Meeting of the Western Division of the American Fisheries Society. Laramie, WY.
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May 2018
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Initial analyses indicate that Stonecats can move long distances (up to 1.5 km) but most individuals are relatively sedentary, moving less than 100 meters. Stonecats appear to prefer riffle habitat at a depth of 1.01 feet, flow of 0.29 meters per second and large substrate. Understanding Stonecat movement patterns and habitat preferences are crucial for upcoming stream restoration and management.
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D'Amico, T.W., D.L. Winkelman, and F.B. Wright. Habitat selection and movement of stonecat in St. Vrain Creek, CO. 2018 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Laramie, WY.
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February 2018
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Initial analyses indicate that Stonecats can move long distances (up to 1.5 km) but most individuals are relatively sedentary, moving less than 100 meters. Stonecats appear to prefer riffle habitat at a depth of 1.01 feet, flow of 0.29 meters per second and large substrate. Understanding Stonecat movement patterns and habitat preferences are crucial for upcoming stream restoration and management.
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D'Amico, T. and D.L. Winkelman. Stone Cat Ecology in St. Vrain Creek. 42nd Annual Meeting of the Western Division the American Fisheries Society. Missoula, FT.
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May 2017
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We have PIT tagged Stonecats (n = 338; size range of 79 – 225 mm TL) and are using a combination of static and mobile PIT tag antennae to characterize their habitat preferences and movement ecology over an 5.3 km long section of St. Vrain Creek. To date, the greatest distance a Stonecat has moved is 2.4 km, and Stonecat prefer riffles (p = 0.652) to pools (p = 0.169) or runs (p = 0.179).
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D'Amico, T. and D.L. Winkelman. Stone Cat Ecology in St. Vrain Creek. 2017 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Grand Junction, CO.
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February 2017
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We have PIT tagged Stonecats (n = 338; size range of 79 – 225 mm TL) and are using a combination of static and mobile PIT tag antennae to characterize their habitat preferences and movement ecology over an 5.3 km long section of St. Vrain Creek. To date, the greatest distance a Stonecat has moved is 2.4 km, and Stonecat prefer riffles (p = 0.652) to pools (p = 0.169) or runs (p = 0.179).
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D'Amico, T, D.L. Winkelman, T. Swarr, and C. Myrick. PIT tag retention in a small-bodied native catfish (Noturus flavus). 42nd Annual Meeting of the Western Division the American Fisheries Society. Missoula, MT
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May 2017
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We evaluated retention rates in a laboratory setting to assess overall tag loss. We surgically implanted PIT tags in May 2015 and have been continuously measuring expulsion rates. Tag retention was approximately 85% at ten months.
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D'Amico, T, D.L. Winkelman, T. Swarr, and C. Myrick. PIT tag retention in a small-bodied native catfish (Noturus flavus). 2017 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Grand Junction, CO.
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February 2017
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We evaluated retention rates in a laboratory setting to assess overall tag loss. We surgically implanted PIT tags in May 2015 and have been continuously measuring expulsion rates. Tag retention was approximately 85% at ten months.
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Conrey, R. Y., J. DeCoste, W. L. Kendall, and J. H. Gammonley. 2019. Developing methods for nesting success of bald eagles in Colorado. Raptor Research Foundation Annual Conference, Fort Collins, CO, Nov 5-10, 2019.
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November 2019
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This work demonstrates the potential for bald eagle nest monitoring in Colorado, using both professional and citizen science effort, and indicates an approach to modeling nest success that accounts for the unknown age of raptor nests.
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Cole, A.R., J. Beihoffer, B.R. Blackwell, J.E. Cavallin, D.R. Eckman, A. Jastrow, J. Kinsey, K. Keteles, J. Parman, D.L. Winkelman, and D.L. Villeneuve. Evaluating effects of bioactive contaminants related to waste water treatment plant effluent on the South Platte River. Society of Ecological Toxicology and Chemistry North America 39th annual meeting. November 6, 2018
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November 2018
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Results provide new insights into the significance of GR-and PPAR? active contaminants in this system.
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Clapp C.M., D.L. Winkelman, K. Thompson. 2008. Investigating competition among lineages of Tubifex tubifex and the potential for biological control of whirling disease. Fisheries, Wildlife, and Conservation Biology Departmental Seminar.
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January 2008
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Clapp C, D.L. Winkelman, and K. Thompson. 2006. Investigating competition among lineages of T. tubifex and the potential for biological control of whirling disease in natural streams. Annual meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Cheyenne WY.
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January 2006
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Cannell, B., J. Sinclair, S. Vardeh, W. L. Kendall, J. Tyne, and B. Sherwin. 2019. Is climate change to blame for the halving of a high conservation value Little Penguin colony over a mere 10 years? 10th International Penguin Conference, Dunedin, New Zealand, 24-28 August 2019.
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August 2019
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This work demonstrates the effect, or lack of it, of short term climate changes on little penguin demography.
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Burnham, K. P. and G. C. White. October 2000. Evaluation of some random effects methodology applicable to bird ringing data. EURING 2000, Marshal, CA.
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October 2000
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Burnham, K. P. March 2000. Model testing and selection in wildlife data analysis. Wisconsin Cooperative Wildlife Research Unit, Madison, WI.
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March 2000
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Burnham, K. P. December 1999. A random effects model for band recovery and capture-recapture data. Estimating Animal Abundance and Related Parameters, Third Conference on Statistics in Ecology and Environmental Monitoring, Dunedin, New Zealand. (Keynote speaker)
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December 1999
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Buderman, Hooten, Ivan, Shenk (2015). The Wildlife Society Annual Meeting, Winnipeg, Canada. Contributed talk. Spatial ecology and movement of reintroduced Canada lynx.
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October 2015
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This talk describes a movement modeling approach and results pertaining to telemetry data from Canada Lynx.
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Buderman, F.E., M.B. Hooten, and M. Alldredge. The Wildlife Society Annual Meeting. (2016). Mountain lion movement dynamics in the wildland-urban interface. Contributed Talk.
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October 2016
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This talk presents space use and movement of Colorado mountain lions.
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Buderman, F.E., M.B. Hooten, and M. Alldredge. The Wildlife Society - CMPS meeting. (2016). Drivers of mountain lion movement in the Colorado Front Range. Contributed Talk.
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August 2016
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This talk describes space use and resource selection of mountain lions in Colorado.
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Buderman, F.E. and M.B. Hooten. (2018). Basis functions for continuous-time models of animal movement. The Wildlife Society Annual Meeting, Cleveland, OH. Invited Talk.
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October 2018
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This talks provides an overview of continuous-time statistical models for animal telemetry data.
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Brost, Hooten, Hanks, Small. (2015). The Wildlife Society Annual Meeting, Winnipeg, Canada. Invited Talk: Animal movement constraints improve resource selection inference in the presence of telemetry error.
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October 2015
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This paper describes a modeling technique for telemetry data that properly accounts for physical barriers to animal movement while providing resource selection inference.
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Brost, B.M., M.B. Hooten, and R.J. Small. (2016). International Statistical Ecology Conference. Seattle, WA. Invited Talk. Title: Locating harbor seal haul-out sites from Argos satellite telemetry data using a Dirichlet process.
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June 2016
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This talk presents a method for using telemetry data to discover haul out sites for harbor seals.
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Broms, K.M., M.B. Hooten, and R.M. Fitzpatrick. (2016). International Statistical Ecology Conference, Seattle, WA. Optimal adaptive sampling design for occupancy monitoring.
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June 2016
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This presentation describes an approach for optimal monitoring of ecological processes using adaptive design concepts and occupancy models.
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Broms, K.M., M.B. Hooten, and R.M. Fitzpatrick. (2016). Ecological Society of America, Annual Meeting. Contributed talk. Title: Model selection and assessment for multi-species occupancy models.
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August 2016
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This presentation discusses the pros and cons of various model checking and comparison approaches for multispecies occupancy models.
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Broms, K.M., M.B. Hooten, and R.M. Fitzpatrick. (2016). AFS Colorado/Wyoming Chapter Annual Meeting, Laramie, WY. Spatial monitoring design for plains fishes in the South Platte River Basin.
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March 2016
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This talk describes an optimal adaptive monitoring design for plains fishes in Colorado.
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Broms, K.M., M.B. Hooten, R. Fitzpatrick, and J.M. Ver Hoef. Joint Statistical Meetings: ASA. Baltimore, MD (contrib. talk, 2nd author), 2017, Title: Bayesian spatial stream network models.
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August 2017
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This talk describes how to model ecological processes on stream networks.
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Breton, A.R., D.L. Winkelman, K.R. Bestgen, and J.A. Hawkins. Population dynamics modeling of introduced smallmouth bass in the upper Colorado River basin. 2014 Upper Colorado River Basin Endangered Fish Recovery Program's Annual Researchers Meeting, Grand Junction, Colorado, January 14-15.
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January 2014
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Modeling results suggest that early season nest disturbance was most effective at reducing smallmouth bass densities and current spring electrofishing is preventing increases in smallmouth bass abundance in the Yampa River.
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Breton, A.R., D.L. Winkelman, J.A. Hawkins, and K.R. Bestgen. Population trends of smallmouth bass in the upper Colorado River basin wit an evaluation of removal effects. 2014 Upper Colorado River Basin Endangered Fish Recovery Program's Annual Researchers Meeting, Grand Junction, Colorado, January 14-15.
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January 2014
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Despite the potential for post-removal bass population recovery in some reaches from recruitment and immigration, recent electrofishing removal effort (ca. 2008-2011) has resulted in declining smallmouth bass population trends.
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Breton, A.R., D.L. Winkelman, J.A. Hawkins, K.R. Bestgen. Population trends of smallmouth bass in the upper Colorado River basin with an evaluation of removal effects.
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February 2015
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Despite the potential for post-removal population recovery recent electrofishing removal efforts have resulted in declining smallmouth bass population trends. Therefore, we recommend that removal efforts continue, especially in river reaches that are perceived to be production areas for smallmouth bass. We also suggest that other management options to reduce smallmouth bass populations be considered. For instance, it is clear that flow and temperature influence the spawning success of smallmouth bass and manipulation of these factors could be used in some areas to influence smallmouth bass reproductive success. It is also imperative that escapement of resident smallmouth bass and other fishes from reservoirs and other sources be prevented.
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Bergersen, E. P. and K. B. Rogers. August 2000. Rocky Mountain Arsenal bass habitat use. American Fisheries Society Black Bass 2000 Symposium, St. Louis, MO.
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August 2000
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Avila, B.W., E.R. Fetherman, D.L. Winkelman. Raft and floating antenna systems for detecting PIT-tagged fish in rivers. 2014 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society, March 4-6, Laramie, WY.
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March 2014
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Our portable antenna systems provide a noninvasive method that minimizes disturbance to individual fish for estimating PIT-tagged fish abundance and survival in both small (hundreds of m) and large (km) river reaches.
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Avila, B.W., D.L. Winkelman, and E.R. Fetherman. Whirling disease resistant Rainbow Trout fry survival: a comparison of two strains. 2018 Annual Meeting of the Western Division of the American Fisheries Society. Anchorage, AK.
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May 2018
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The field experiment revealed that 2 month apparent survival and growth rate was influenced by strain and average temperature. However, after 12 months there was no significant difference in apparent survival or growth rate between the GR and GRxCRR.
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Avila, B.W., D.L. Winkelman, and E.R. Fetherman. Quality vs. quantity: manipulating rearing density as a strategy for increasing survival of Rainbow Trout fry pre- and post-stocking. 2018 Annual Meeting of the Western Division of the American Fisheries Society. Anchorage, AK.
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May 2018
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Rearing fish at lower densities could be a low-cost management alternative for mitigating stress and water quality, and potentially reducing losses occurring from BCWD.
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Avila, B.W., D.L. Winkelman, and E.R. Fetherman. Quality vs. quantity: manipulating rearing density as a strategy for increasing survival of Rainbow Trout fry pre- and post-stocking. 2018 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Laramie, WY.
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March 2018
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Rearing fish at lower densities could be a low-cost management alternative for mitigating stress and water quality, and potentially reducing losses occurring from BCWD.
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Avila, B.W., D.L. Winkelman, E.R. Fetherman. Evaluation of resistant rainbow trout fry stocking in Colorado. 41st Annual meeting of the Western Division of the American Fisheries Society. April 22, 2016. Reno, NV.
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April 2016
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We did not detect differences in survival between strains of resistant rainbow trout stocked in Colorado streams. This indicates that pure resistant strains may be a management option.
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Avila, B.W., D.L. Winkelman, E.R. Fetherman. Evaluation of resistant rainbow trout fry stocking in Colorado. 2016 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society, March 1-4, Laramie, WY.
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March 2016
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Survival did not differ between resistant strains of rainbow trout, indicating that pure resistant strains may be used for stocking.
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Avila, B.W., D.L. Winkelman, E.R. Fetherman. Evaluation of resistant Rainbow Trout fry stocking in Colorado
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February 2015
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Short-term results indicate that the GR strain may be a viable alternative for stocking in whirling disease endemic streams. However, longer-term monitoring is necessary before stocking recommendations can be made.
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Anderson, J.R., D.L. Winkelman, and A. Jastrow. Evaluating the distribution of estrogenic effects below wastewater treatment plants: estrogen persistence and fish movement. 42nd Annual Meeting of the Western Division of the American Fisheries Society. Missoula, MT.
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May 2017
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Analyses of downstream persistence of Vtg are ongoing, but we hypothesize that Vtg expression will decrease downstream due to degradation by organic or environmental processes.Laboratory and wild populations expressed similar increased levels of Vtg compared to controls. Similar expression of Vtg indicates that differences seen between fish in the field are likely due to avoidance of contaminants by wild fish.
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Anderson, J.R., D.L. Winkelman, and A. Jastrow. Evaluating the distribution of estrogenic effects below wastewater treatment plants: estrogen persistence and fish movement. 2017 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Grand Junction, CO.
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February 2017
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Analyses of downstream persistence of Vtg are ongoing, but we hypothesize that Vtg expression will decrease downstream due to degradation by organic or environmental processes.Laboratory and wild populations expressed similar increased levels of Vtg compared to controls. Similar expression of Vtg indicates that differences seen between fish in the field are likely due to avoidance of contaminants by wild fish.
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Anderson, J.R., D.L. Winkelman, A.M. Vajda, and A. Jastrow. Evaluating wastewater effluent exposure in wild fishes using insights from laboratory and wild populations.
2018 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. Laramie, WY.
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February 2018
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Our results indicate that the response of VTG production in laboratory raised FHM is more sensitive to estrogen exposure than VTG production in wild FHM, demonstrating that wild FHM seem to be acclimated or adapted to living in WWTP effluent compared to the naïve laboratory population. These results have consequences for the potential inferences being made between laboratory and wild populations and indicates that more research needs to be done to understand the differences between wild and laboratory raised populations.
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Anderson, J and D.L. Winkelman. Evidence of estrogenic endocrine disruption at several municipal wastewater treatment plants within the South Platte watershed, Colorado. Annual Meeting of the Rocky Mountain Chapter of the Society for Ecological Toxicology and Chemistry April 8, 2016, Fort Collins, CO.
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April 2016
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An initial analysis of landscape level exposure indicated a high degree of variability in endocrine exposure across eastern Colorado.
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Anderson, J and D.L. Winkelman. Evidence of estrogenic endocrine disruption at several municipal wastewater treatment plants within the South Platte watershed, Colorado. 2016 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society, March 1-4, Laramie, WY.
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March 2016
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Endocrine exposure varies across the front range of Colorado.
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D.L. Winkelman, and E.R. Fetherman. Introduction to the symposium on Fishing for solutions to economically and ecologically important salmonid diseases. 2018 Annual Meeting of the Western Division of the American Fisheries Society. Anchorage, AK.
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May 2018
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Infectious pathogens are a serious threat to fisheries and aquaculture production worldwide. The threats that pathogens pose to fisheries has stimulated research into control and management. Three main factors affect disease transmission and ultimately options for control. These factors consist of the environment, host, and pathogen and manipulating one of more these factors is necessary to reduce the prevalence and severity of a pathogen.
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