Pennsylvania Staff Member
Dr. Tyler Wagner
Assistant Unit Leader
Phone: (814) 865 - 6592
Email: twagner@usgs.gov
Faculty Email: txw19@psu.edu
Faculty Website
Education
- Ph D Michigan State University 2006
- MS University of Idaho 2000
- BS University of Idaho 1999
Biography
Dr. Wagner received graduate degrees from the University of Idaho (MS) and Michigan State University (PhD) and was a post-doctoral researcher at the Quantitative Fishery Center at Michigan State University before joining the Pennsylvania Unit in 2008. He conducts research that addresses key challenges facing aquatic and fisheries ecology and landscape limnology in the face of global change. He conducts both applied and basic science in collaboration with diverse research teams on problems that range from local to continental in scale. Specifically, his research fills important knowledge gaps that exist in our understanding of lake and stream ecosystem processes that include: (a) fine-scale ecological properties and processes of fishes, such as habitat use, movement dynamics, and responses to legacy and emerging contaminants, (b) macro-ecological studies of lake and stream ecosystem state, including the effects of climate and land use change on lake water quality and fish growth and distributions, and (c) conducting synthetic work to study the interactions that exits between these scales. Dr. Wagner teaches courses on the ecological application of Bayesian hierarchical models.
Areas of Expertise
Aquatic Ecology, Biodiversity, Climate Change, Contaminants, Fisheries Management, Invasive Species, Movement Ecology, Population and Community Ecology, Species Distribution Modeling, Species Management, Statistics and Modelling, Stream Ecology, Water Quality
Taxon Groups Studied
Freshwater Fishes
| Research Publications | Publication Date |
|---|---|
| Zabel, R.W., T. Wagner, J.L. Congleton, S.G. Smith, and S.G. Williams. 2005. Survival and selection of migrating salmon from capture-recapture models with individual traits. Ecological Applications 15:1427-1439. | December 2005 |
| Yuan, S., J. Zhou, P-N., Tan, E. Fergus, T. Wagner, and P.A. Soranno. 2017. Multi-Level Multi-Task Learning for Nested Geospatial Data. The IEEE International Conference on Data Mining series (ICDM). | May 2018 |
| White, S.L., W.L. Miller, S.A. Dowell, M.L. Bartron, and T. Wagner. Accepted. Limited hatchery introgression into wild brook trout (Salvelinus fontinalis) populations despite reoccurring stocking. Evolutionary Applications. | December 2018 |
| White, S.L., T. Wagner, C. Gowand, and V.A. Braithwaite. 2017. Can personality predict individual differences in brook trout spatial learning ability? Behavioural Processes 141:220-228. | September 2016 |
| White, S.L., M.S. Eackles, T. Wagner, M. Schall, G. Smith, J. Avery, and D.C. Kazyak. 2021. Optimization of a suite of flathead catfish (Pylodictis olivaris) microsatellite markers for understanding the population genetics of introduced populations in the northeast United States. BMC Research Notes 14:314. | August 2021 |
| White, S.L., J. Keagy, S. Batchelor, J. Langlois, N. Thomas, and T. Wagner. 2024. Movement beyond the mean: decoupling sources of individual variation in brook trout movement across seasons.Environmental Biology of Fishes 106:2205-2218. https://doi.org/10.1007/s10641-023-01501-2 | January 2024 |
| White, S.L., E.M. Hanks, and T. Wagner. 2020. A novel quantitative framework for riverscape genetics. Ecological Applications. https://doi-org.ezaccess.libraries.psu.edu/10.1002/eap.2147 | May 2020 |
| White, S.L., D.A. DeMario, L.R. Iwanowicz, V.S. Blazer, and T. Wagner. 2020. Tissue distribution and immunomodulation in channel catfish (Ictalurus punctatus) following dietary exposure to polychlorinated biphenyl Aroclors and food deprivation. Int J Environ Res Public Health: 17(4). pii: E1228. doi: 10.3390/ijerph17041228 | February 2020 |
| White, S.L., B.C. Kline, N.P. Hitt, and T. Wagner. 2019. Individual behaviour and resource use of thermally stressed brook trout Salvelinus fontinalis portend the conservation potential of thermal refugia. Journal of Fish Biology 95:1061-1071. | September 2019 |
| White, S.L. and T. Wagner. 2020. Behavior at short temporal scales drives dispersal dynamics and survival in a metapopulation of brook trout (Salvelinus fontinalis). Freshwater Biology. | November 2020 |
| White, S., E. Faulk, C. Tzilkowski, A.S. Weber, M. Marshall, and T. Wagner. 2020. Predicting fish species richness and habitat relationships using Bayesian hierarchical multispecies occupancy models. Canadian Journal of Fisheries and Aquatic Sciences 77:602-610. | January 2020 |
| White, S., D. DeMario, L. Iwanowicz, V. Blazer, and T. Wagner. 2020. Tissue distribution and immunomodulation in channel catfish (Ictalurus punctatus) following dietary exposure to polychlorinated biphenyl Aroclors and food deprivation. Int J Environ Res Public Health: 17(4). pii: E1228. doi: 10.3390/ijerph17041228 | February 2020 |
| Waraniak, J. M.S. Eackles, J. Keagy, G.D. Smith, M. Schall, S. Stark, S.L. White, D.C. Kazyak, T. Wagner. 2024. Population genetic structure and demographic history reconstruction of introduced flathead catfish (Pylodictis olivaris) in two US mid-Atlantic rivers. https://doi.org/10.1111/jfb.15888 | August 2024 |
| Wagner, T., and J.L. Congleton. 2004. Blood-chemistry correlates of nutritional condition, tissue damage, and stress in migrating juvenile chinook salmon (Oncorhynchus tshawytscha). Canadian Journal of Fisheries and Aquatic Sciences 61:1066-1074. | December 2004 |
| Wagner, T., and J.A. Sweka. 2011.Evaluation of hypotheses for describing temporal trends in Atlantic salmon parr densities in Northeast U.S. Rivers. North American Journal of Fisheries Management 31:340–351. | Abstract | May 2011 |
| Wagner, T., and 7 coauthors. 2010. Spatial and temporal dynamics of lake whitefish (Coregonus clupeaformis) health measures: linking individual-based indicators to a management-relevant endpoint. Journal of Great Lakes Research 36:121-134. | Abstract | May 2010 |
| Wagner, T., S.R. Midway, T. Vidal, B.J. Irwin, and J.R. Jackson. 2016. Detecting unusual temporal patterns in fisheries time series data. Transactions of the American Fisheries Society 145:786-794. | Abstract | Download | June 2016 |
| Wagner, T., P.A. Soranno, K.E. Webster, and K. Spence Cheruvelil. 2011. Landscape drivers of regional variation in the relationship between total phosphorus and chlorophyll in lakes. Freshwater Biology 56:1811-1824. | Abstract | June 2011 |
| Wagner, T., P.A. Soranno, K. Spence Cheruvelil, B. Renwick, K. Webster, P. Vaux, and R. Abbitt. 2008. Quantifying sample biases of inland lake sampling programs in relation to lake surface area and land use/cover. Environmental Monitoring and Assessment 131-147. | Abstract | February 2008 |
| Wagner, T., P. McLaughlin, K.E. Faunce, S. Austin, K. Smalling. 2024. The effects of wastewater reuse on smallmouth bass (Micropterus dolomieu) relative abundance in the Shenandoah River Watershed, USA. Environmental Toxicology and Chemistry. https://doi.org/10.1002/etc.5849 | March 2024 |
| Wagner, T., N.R. Lottig, M.L. Bartley, E.M. Hanks, E.M. Schliep, N.B. Wikle, K.B.S. King, I. McCullough, J. Stachelek, K.S. Cheruvelil, C.T. Filstrup, J.F. Lapierre, B. Liu, P.A. Soranno, P-N. Tan, Q. Wang, K. Webster, and J. Zhou. 2019. Increasing accuracy of lake nutrient predictions in thousands of lakes by leveraging water clarity data. Limnology and Oceanography Letters. https://doi.org/10.1002/lol2.10134 | December 2019 |
| Wagner, T., McLaughlin, P., Smalling, K., Breitmeyer, S., Gordon, S., and Noe, G.B., 2021. The statistical power to detect regional temporal trends in riverine contaminants in the Chesapeake Bay Watershed, USA. Science of the Total Environment 812:152435. https://doi.org/10.1016/j.scitotenv.2021.152435 | December 2021 |
| Wagner, T., M.E. Benbow, T.O. Brenden, J. Qi, and R.C. Johnson. 2008. Buruli ulcer disease prevalence in Benin, West Africa: associations with land use/cover and the identification of disease clusters. International Journal of Health Geographics 7:25. | Abstract | May 2008 |
| Wagner, T., M.E. Benbow, M. Burns, R.W. Merritt, J. Qi, P.L.C. Small, and R.C. Johnson. 2008. A landscape-based model for predicting Mycobacterium ulcerans infection (Buruli ulcer) presence in Benin, West Africa. EcoHealth 5:69-79. | Abstract | February 2008 |
| Wagner, T., J.T. Deweber, J. Detar, and J.A. Sweka. 2013. Landscape-scale evaluation of asymmetric interactions between brown trout and brook trout using two-species occupancy models. Transactions of the American Fisheries Society 142:353-361. | Download | January 2013 |
| Wagner, T., J.T. Deweber, J. Detar, D. Kristine, and J.A. Sweka. 2014. Spatial and Temporal Dynamics in Brook Trout Density: Implications for Population Monitoring. North American Journal of Fisheries Management 34:258-269. | Download | March 2014 |
| Wagner, T., J.R. Bence, M.T. Bremigan, D.B. Hayes, and M.J. Wilberg. 2007. Regional trends in fish mean length at age: components of variance and the power to detect trends. Canadian Journal of Fisheries and Aquatic Sciences 64:968-978. | December 2007 |
| Wagner, T., J.L. Congleton, and D.M. Marsh. 2004. Smolt-to-adult return rates of juvenile chinook salmon transported through the Snake-Columbia River hydropower system, USA, in relation to densities of co-transported juvenile steelhead. Fisheries Research 68:259-270. | December 2004 |
| Wagner, T., G.J.A. Hansen, E. Schliep, B. Bethke, A. Honsey, P. Jacobson, B.C. Kline, and S.L. White. 2020. Improved understanding and prediction of freshwater fish communities through the use of joint species distribution models. Canadian Journal of Fisheries and Aquatic Sciences 77(9): 1540-1551. https://doi.org/10.1139/cjfas-2019-0348 | August 2020 |
| Wagner, T., E.M. Schliep, J.S. North, H. Kundel, J.K. Ruzich, C.A. Custer, and G.J.A. Hansen. 2023. Predicting climate change impacts on poikilotherms using physiologically guided species abundance models. Proceedings of the National Academy of Sciences: 15: e2214199120 https://doi.org/10.1073/pnas.2214199120 | April 2023 |
| Wagner, T., D.R. Diefenbach, A.S. Norton, and S.A. Christensen. 2011. Using multilevel models to quantify heterogeneity in resource selection. Journal of Wildlife Management 75:1788-1796. | Abstract | Download | November 2011 |
| Wagner, T., D.B. Hayes, and M.T. Bremigan. 2006. Accounting for multilevel data structures in fisheries data using mixed models. Fisheries 31:180-187. | December 2006 |
| Wagner, T., C.S. Vandergoot, and J. Tyson. 2009. Evaluating the Power to Detect Temporal Trends in Fishery-Independent Surveys: A Case Study Based on Gillnets Set in the Ohio Waters of Lake Erie for Walleye. North American Journal of Fisheries Management 29:805-816. | Abstract | May 2009 |
| Wagner, T., C.E. Fergus, C.A. Stow, K.S. Cheruvelil, and P.A. Soranno. 2016. The statistical power to detect cross-scale interactions at macroscales. Ecosphere. 7(7):e01417. | Download | July 2016 |
| Wagner, T., Bremigan, M. T., Spence Cheruvelil, K., Soranno, P. A., Nate, N. N., and Breck, J. E. 2007. A multilevel modeling approach to assessing regional and local landscape features for lake classification and assessment of fish growth rates. Environmental Monitoring and Assessment 130:437-454. | December 2007 |
| Wagner, T., B. J. Irwin, J. R. Bence, and D.B. Hayes. 2013. Detecting temporal trends in freshwater fisheries surveys: statistical power and the important linkages between management questions and monitoring objectives. Fisheries 38:309-319. | Download | July 2013 |
| Wagner, T. and S.R. Midway. 2014. Modeling spatially varying landscape change points in species occurrence thresholds. Ecosphere 5(11):145.http://dx.doi.org/10.1890/ES14-00288.1 | Download | November 2014 |
| Wagner, T. and E.M. Schliep. 2018. Combining nutrient, productivity, and landscape-based regressions improves predictions of lake nutrients and provides insight into nutrient coupling at macroscales. Limnology and Oceanography 63:2372-2383. | August 2018 |
| Wagner, T. and C.M. Falter. 2002. Response of an aquatic macrophyte community to fluctuating water levels in an oligotrophic lake. Lake and Reservoir Management 18:52-65. | December 2002 |
| Wagner, T. J.B. Whittier, J.T. DeWeber, S.R. Midway, and C.P. Paukert. 2017. Annual changes in seasonal river water temperatures in the eastern and western United States. Water 9(2), 90; doi:10.3390/w9020090 | February 2017 |
| Wagner, T. A.K. Jubar, and M.T. Bremigan. 2006. Can habitat alteration and spring angling explain black bass nest distribution and success? Transactions of the American Fisheries Society 135:843-852. | December 2006 |
| Vidal, T. E., B. J. Irwin, T. Wagner, L. G. Rudstam, J. R. Jackson, and J. R. Bence. 2017. Using Variance Structure to Quantify Responses to Perturbation in Fish Catches. Transactions of the American Fisheries Society 146:584-593. [Featured Article] | Abstract | April 2017 |
| Thompson, T.J., M.A. Briggs, P.J. Phillips, V.S. Blazer, K.L. Smalling, D.W. Kolpin, T. Wagner. 2020. Groundwater discharges as a source of phytoestrogens and other agriculturally derived contaminants to streams. Science of the Total Environment. | October 2020 |
| Sweka, J.A., T. Wagner, J. Detar, and D. Kristine. 2012. Combining Field Data with Computer Simulations to Determine a Representative Reach for Brook Trout Assessment. Journal of Fish and Wildlife Management 3:209-222. | December 2012 |
| Sweka, J.A., L.A. Davis, T. Wagner. 2017. Fall and winter survival of brook and brown trout in a North-Central Pennsylvania watershed. Transactions of the American Fisheries Society 146:744-752. | Download | May 2017 |
| Sweka, J.A. and T. Wagner. 2021. Influence of seasonal extreme flows on Brook Trout recruitment. Transactions of the American Fisheries Society. https://doi.org/10.1002/tafs.10347 | December 2021 |
| Stow, C.A., K.E. Webster, T. Wagner, N. Lottig, P.A. Soranno, C. YoonKynug. 2018. Small Values in Big Data: The Continuing Need for Appropriate Metadata. Ecological Informatics 45:26-30. | May 2018 |
| Stark, S., M.K. Schall, G.D. Smith, A.P. Maloy, J.A. Coombs, T. Wagner, J. Avery. 2024. Feeding Habits and Ecological Implications of the Invasive Flathead Catfish, Pylodictis olivaris, in the Susquehanna River Basin, Pennsylvania. Transactions of the American Fisheries Society 153:591-610. https://doi.org/10.1002/tafs.10480 | August 2024 |
| Stachelek, J. W. Weng, C.C. Carey, A.R. Kemanian, K.M. Cobourn, T. Wagner, K.C. Weathers, P.A. Soranno. 2020. Granular measures of agricultural land-use influence lake nitrogen and phosphorus differently at macroscales. Ecological Applications 30, e02123. | April 2020 |
| Spence Cheruvelil, K., P.A. Soranno, M.T. Bremigan, T. Wagner, and S.L. Martin. 2008. Grouping lakes for water quality assessment and monitoring: the roles of regionalization and spatial scale. Environmental Management 41:425-440. | Abstract | February 2008 |
| Soranno, P.A., T. Wagner, S. Martin, L. McLean, L. Novitski,C. Provence, and A. Rober. 2011. Quantifying regional reference conditions for freshwater ecosystem management: A comparison of approaches and future research needs. Lake and Reservoir Management 27:138-148. | Abstract | May 2011 |
| Soranno, P.A., L.C. Bacon, M. Beauchene, K.E. Bednar, E.G. Bissell, C.K. Boudreau, M.G. Boyer, M.T. Bremigan, S.R. Carpenter, J.W. Carr and 70 co-authors. LAGOS-NE: A multi-scaled geospatial temporal database of lake ecological context and water quality for thousands of U.S. Lakes. In press. GigaScience. | October 2017 |
| Soranno, P.A., K.S. Cheruvelil, T. Wagner, K.E. Webster, and M.T. Bremigan. 2015. Effects of land use on lake nutrients: The importance of scale, hydrologic connectivity, and region. PLoS ONE 10(8): e0135454. | Download | August 2015 |
| Soranno, P.A., K.S. Cheruvelil, B. Liu, Q. Wang, P-N. Tan, J. Zhou, K.B.S. King, I.M. McCullough, J. Stachelek, M. Bartley, C.T. Filstrup, E.M. Hanks, J-F. Lapierre, N.R. Lottig, E.M. Schliep, T. Wagner, K.E. Webster. 2020. Ecological prediction at macroscales using big data: Does sampling design matter? Ecological Applications 30:e02123. | September 2020 |
| Soranno, P.A., K. Spence Cheruvelil, K.E. Webster, M.T. Bremigan, T. Wagner, and C.A. Stow. 2010. Freshwater Ecosystem Classification for Landscape-scale Management. BioScience 60:440-454. | June 2010 |
| Soranno, P.A., K. Spence Cheruvelil, E. Bissell, M. Tate-Bremigan, J.A. Downing, C.E. Fergus, C. Filstrup, N.R. Lottig, E.N. Henry, E.H. Stanley, C.A. Stow, P.N. Tan, T. Wagner, and K.E. Webster. 2014. Cross-scale interactions: A conceptual framework for understanding multi-scaled cause-effect relationships in macrosystems. Frontiers in Ecology and the Environment 12:65-73. | Download | February 2014 |
| Soranno, P.A., E.G. Bissell, K.S. Cheruvelil, S.M. Collins, C.E. Fregus, C.T. Filstrup, J-F. Lapierre, N.R. Lottig, S.K. Oliver, C.E. Scott, N.J. Smith, S. Stopyak, S. Yuan, M.T. Bremigan, J.A. Downing, C. Gries, E.N. Henry, N.K. Skaff, E.H. Stanley, C.A. Stow, P-N. Tan, T. Wagner, and K.E. Webster. 2015. Building a multi-scaled geospatial temporal ecology database from disparate data sources: Fostering open science and data reuse. GigaScience 4:28. | Download | July 2015 |
| Soranno*, P.A., T. Wagner*, S.M. Collins, J-F Lapierre, N.R. Lottig, and S.M. Oliver. 2019. Spatial and temporal variation of ecosystem properties at macroscales. Ecology Letters 22:1587-1598. (* co-leads) | September 2019 |
| Smith, L.A., T. Wagner, M.L. Bartron. 2015. Spatial and temporal movement dynamics of brook Salvelinus fontinalis and brown trout Salmo trutta. Environmental Biology of Fishes 98:2049-2065. | Download | July 2015 |
| Smith, G.D., Massie, D.L., Perillo, J., Wagner, T. and Pierce, D., 2021. Range expansion and factors affecting abundance of invasive Flathead Catfish in the Delaware and Susquehanna rivers, Pennsylvania, USA. North American Journal of Fisheries Management 41:S205-S220. http://dx.doi.org/10.1002/nafm.10628 | April 2021 |
| Smalling, K.L., Romanok, K.M., Bradley, P.M, Morriss, M.C., Gray, J.L., Kanagy, L.K., Gordon, S.E., Williams, B.W., Breitmeyer, S.E., Jones, D.K., DeCicco, L.A., Eagles-Smith, C.A., and Wagner, T., 2023, Per- and Polyfluoroalkyl Substances (PFAS) in United States Tapwater: Comparison of Underserved Private-Well and Public-Supply Exposures and Associated Health Implications, Environment International, p. 108033, https://doi.org/10.1016/j.envint.2023.108033 | June 2023 |
| Smalling, K.L., O.H. Devereux, S. Gordon, P. Phillips, V.S. Blazer, M.L. Hladik, D.W. Kolpin, M.T. Meyer, A. Sperry, and T. Wagner. 2021. Environmental and anthropogenic drivers of contaminants in agricultural watersheds with implications for land management. Science of the Total Environment 145687. | February 2021 |
| Schall, M.K., V.S. Blazer, R.M. Lorantas, G.D. Smith, J.E. Mullican, B.J. Keplinger, T. Wagner. In press. Quantifying Temporal Trends in Fisheries Abundance using Bayesian Dynamic Linear Models: A Case-Study of Riverine Smallmouth Bass Populations. North American Journal of Fisheries Management. | April 2018 |
| Schall, M.K., V.S. Blazer, H.L. Walsh, G.D. Smith, T. Wertz, and T. Wagner. Spatial and temporal variability of myxozoan parasite prevalence in young of the year smallmouth bass in the Susquehanna River Basin, Pennsylvania | August 2018 |
| Schall, M.K., T. Wertz, G.D. Smith, V.S. Blazer, and T. Wagner. 2019. Movement dynamics of smallmouth bass (Micropterus dolomieu) in a large river-tributary system. Fisheries Management and Ecology 26:590-599. | July 2019 |
| Schall, M.K., M.L. Bartron, T. Wertz, J. Niles, V.S. Blazer, and T. Wagner. 2017. Evaluation of genetic population structure of Smallmouth Bass in the Susquehanna River Basin, PA. North American Journal of Fisheries Management 37:729-740. | May 2017 |
| Schall, M.K., G.D. Smith, V.S. Blazer, H.L. Walsh, and T. Wagner. 2024. Factors influencing the prevalence of hyperpigmented melanistic lesions in smallmouth bass Micropterus dolomieu in the Susquehanna River Basin, Pennsylvania. Journal of Fish Diseases. http://doi.org/10.1111/jfd.14033 | October 2024 |
| Schall, M.K., G.D. Smith, V.S. Blazer, H.L. Walsh, Y. Li, and T. Wagner. 2020. A fishery after the decline: The Susquehanna River Smallmouth Bass story. Fisheries 45:576-584. | August 2020 |
| Schall, M.K., G.D. Smith, V.S. Blazer, H.L. Walsh, T. Wertz, D. Shull, and T. Wagner. 2023. Assembling the right pieces: developing an interdisciplinary team to study disease, decline, and recovery of a world-class Smallmouth Bass fishery. Fisheries. https://doi.org/10.1002/fsh.10922 | May 2023 |
| Rennie, M.D., M.P. Ebener, and T. Wagner. 2012. Can migration mitigate the effects of ecosystem change? Patterns of dispersal, energy acquisition and allocation in Great Lakes lake whitefish (Coregonus clupeaformis). Proceedings of the 10th Annual Coregonid Symposium. Advances in Limnology 63:455-476. | Download | January 2012 |
| Qui, Q., Y. Xu, S.S. Matsuzaki, K. Komatsu, Z. Liang, T. Wagner. 2021.A statistical framework to track temporal dependence of chlorophyll–nutrient relationships with implications for lake eutrophication management. Journal of Hydrology 603:127134. https://doi.org/10.1016/j.jhydrol.2021.127134 | November 2021 |
| Pregler, K.C., R.D. Hanks, E. Childress, N.P. Hitt, D.J. Hocking, B.H. Letcher, T. Wagner, and Y. Kanno. 2019. State-space analysis of power to detect regional brook trout population trends over time. Canadian Journal of Fisheries and Aquatic Sciences 76:2145-2155. | October 2019 |
| Perles, S. J., T. Wagner, B. J. Irwin, D. R. Manning, K. K. Callahan, and M. R. Marshall. 2014. Evaluation of a regional monitoring program's statistical power to detect temporal trends in forest health indicators. Environmental Management 54:641-655. doi:10.1007/s00267-014-0313-z | Download | July 2014 |
| Peoples, B., S.R. Midway, J.T. DeWeber, and T. Wagner. 2018. Catchment scale determinants of nonindigenous minnow richness in the eastern United States. Ecology of Freshwater Fish 27:138-145. | January 2017 |
| Oliver, S.k., S.M. Collins, P.A. Soranno, T. Wagner, E.H. Stanley, J.R. Jones, C.A. Stow, and N.R. Lottig. 2017. Unexpected stasis in a changing world: Lake nutrient and chlorophyll trends since 1990. Global Change Biology 23:5455–5467 DOI: 10.1111/gcb.13810 | August 2017 |
| Oliver, S.K., P.A. Soranno, C.E. Fergus, T. Wagner, L.A. Winslow, C.E. Scott, K.E. Webster, J.A. Downing, and E.A. Stanley. 2016. Prediction of lake depth across a 17-state region in the U.S. Inland Waters 6:314-324. | Download | June 2016 |
| Oliver, S.K., C.E. Fergus, N.K. Skaff, T. Wagner, P-N. Tan, K.S. Cheruvelil, and P.A. Soranno. Strategies for effective collaborative manuscript development in interdisciplinary science teams. Ecosphere. | May 2018 |
| North, J.S., E.M. Schliep, G.J.A. Hansen, J. Kundel, C.A. Custer, P. McLaughlin, and T. Wagner. 2024. Accounting for spatiotemporal sampling variation in joint species distribution models. Journal of Applied Ecology 61:186-201. http://doi.org/10.1111/1365-2664.14547 | November 2023 |
| Mollenhauer, R., T. Wagner, M.V. Kepler, J.A. Sweka. 2013. Fall and early winter movement and habitat use of wild brook trout. Transactions of the American Fisheries Society 142:1167-1178. | Download | July 2013 |
| Miksis-Olds, J. L. and T. Wagner. 2010. Behavioral response of manatees to variations in environmental sound levels. Marine Mammal Science 27: 130–148 | Abstract | March 2010 |
| Midway, S.R., T. Wagner, G.H. Burgess. 2019. Trends in global shark attacks. PLOSE ONE.| https://doi.org/10.1371/journal.pone.0211049 F | February 2019 |
| Midway, S.R., C.T. Hasler, T. Wagner, and C.D. Suski. 2017. Predation of freshwater fish in elevated carbon dioxide environments. Marine and Freshwater Resources 68:1585-1592. | February 2017 |
| Midway, S.R. and T. Wagner. 2015. The first description of oarfish Regalecus glesne (Regalecidae) ageing structures. Journal of Applied Ichthyology. | December 2015 |
| Midway, S., T. Wagner, B. H. Tracy, G. M. Hogue, and W.C. Starnes. 2015. Evaluating changes in stream fish species richness over a 50-year time-period within a landscape context. Environmental Biology of Fishes 98:1295-1309. | Abstract | March 2015 |
| Midway, S. R., T. Wagner, S. Arnott, P. Biondo, F. Martinez-Andrade, and T. Wadsworth. 2015. Spatial and temporal variability in growth of southern flounder (Paralichthys lethostigma). Fisheries Research 167:323-332. | April 2015 |
| Midway, S. R., T. Wagner, J. D. Zydlewski, B. J. Irwin, and C. P. Paukert. 2016. Transboundary Fisheries Science: Meeting the Challenges of Inland Fisheries Management in the 21st Century. Fisheries 41:537-546. | Download | September 2016 |
| Midway, S. M., T. Wagner. and Tracy, B. 2014. A hierarchical community occurrence model for North Carolina stream fish. Transactions of the American Fisheries Society 143:1348-1357. | Download | September 2014 |
| McLaughlin, P., R. Alexander, J. Blomquist, O. Devereux, G. Noe, K. Smalling, and T. Wagner. 2022. Power Analysis for Detecting the Effects of Best Management Practices on Reducing Nitrogen and Phosphorus Fluxes to the Chesapeake Bay Watershed, USA. Ecological Indicators 136:108713. https://doi.org/10.1016/j.ecolind.2022.108713 | February 2022 |
| McLaughlin, P., K. Krause, K. Maloney, T. Woods, and T. Wagner. 2024. Evaluating the effectiveness of joint species distribution modeling for freshwater fish communities within large watersheds. Canadian Journal of Fisheries and Aquatic Sciences. http://dx.doi.org/10.1139/cjfas-2023-0385 | May 2024 |
| McCullough, I.M., J.A. Brentrup, T. Wagner, J-F. Lapierre, J. Henneck, A.M. Paul, M. Belair, M.A. Mortiz, C.T. Filstrup. 2023. Fire characteristics and hydrologic connectivity influence short-term responses of north temperate lakes to wildfire. Geophysical Research Letters. https://doi.org/10.1029/2023GL103953 | August 2023 |
| McCullough, I.M., Hanly, P.J., King, K.B.S., and T. Wagner. 2022. Freshwater corridors in the conterminous US: a coarse-filter approach based on lake-stream networks. Ecosphere e4326. https://doi.org/10.1002/ecs2.4326 | December 2022 |
| McClure, C.M., K.L. Smalling, V.S. Blazer, A.J. Sperry, M.K. Schall, D.W. Kolpin, P.J. Phillips, M.L. Hladik, and T. Wagner. 2020. Spatiotemporal variation in occurrence and co-occurrence of pesticides, hormones, and other organic contaminants in rivers in the Chesapeake Bay Watershed, United States. Science of The Total Environment 728:138765. | April 2020 |
| Maynard-Bean, E. E. M. Kaye, T. Wagner, E.P. Burkhart. 2020. Citizen scientists record novel leaf phenology of invasive shrubs in eastern U.S. forests. Biological Invasions 22:3325–3337. | August 2020 |
| Massie, D.L., Y. Li, and T. Wagner. 2021. A framework for detecting macroscale drivers on fish growth. Canadian Journal of Fisheries and Aquatic Sciences 78:165-172. https://doi.org/10.1139/cjfas-2019-0296 | November 2020 |
| Massie, D.L., Hansen, G.J., Li, Y., Sass, G.G. and Wagner, T., 2021. Do lake-specific characteristics mediate the temporal relationship between walleye growth and warming water temperatures? Canadian Journal of Fisheries and Aquatic Sciences 78: 913-923. https://doi.org/10.1139/cjfas-2020-0169 | February 2021 |
| Massie, D.L., G.D. Smith, T.F. Bonvechio, A.J. Bunch. D.O. Lucchesi, T. Wagner. 2018. Spatial variability and macroscale drivers of growth for native and introduced Flathead Catfish populations. Transactions of the American Fisheries Society 147:554-565. | May 2018 |
| Lottig, N.R., T. Wagner, E.N. Henry, K. Spence Cheruvelil, K.E. Webster, et al. 2014 Long-Term Citizen-Collected Data Reveal Geographical Patterns and Temporal Trends in Lake Water Clarity. PLoS ONE 9(4): e95769. doi:10.1371/journal.pone.0095769. | Download | April 2014 |
| Lottig, N.R., P.-N. Tan, T. Wagner, K.S. Cheruvelil, P.A. Soranno, E.H. Stanley, C.E. Scott, C.A. Stow, and S. Yuan. 2017. Macroscale patterns of synchrony identify complex relationships among spatial and temporal ecosystem drivers. Ecosphere 8(12). | December 2017 |
| Liang, Z., Y. Xu, Q. Qiu, Y. Liu, W. Lu, and T. Wagner. 2021. Developing Joint Nutrient Criteria Using Quantile Regression for Lake Eutrophication Management. Journal of Hydrology 594:125883. https://doi.org/10.1016/j.jhydrol.2020.125883 | January 2021 |
| Liang, Z., Y. Xu, G. Zhao, W. Lu, Z. Fu, S. Wang, and T. Wagner. 2023. Approaching the upper boundary of stressor-response relationships: Identifying factors using a novel framework integrating quantile regression with interpretable machine learning. Frontiers of Environmental Science and Engineering 17:76. https://doi.org/10.1007/s11783-023-1676-2 | January 2023 |
| Liang, Z., P.A. Soranno, T. Wagner. 2020. The role of phosphorus and nitrogen on chlorophyll a: evidence from hundreds of lakes. Water Research 185:116236. https://doi.org/10.1016/j.watres.2020.116236 | July 2020 |
| Liang, Z., Liu, Y., Xu, Y. and Wagner, T., 2021. Bayesian change point quantile regression approach to enhance the understanding of shifting phytoplankton-dimethyl sulfide relationships in aquatic ecosystems. Water Research, p.117287. https://doi.org/10.1016/j.watres.2021.117287 | August 2021 |
| Li, Y., V.S. Blazer, T. Wagner. 2018. Quantifying population-level effects of water temperature, flow and chemical-induced reproduction depression: a simulation study with smallmouth bass. Ecological Modelling 384:63-74. https://doi.org/10.1016/j.ecolmodel.2018.06.015 | November 2018 |
| Li, Y., V.S. Blazer, L.R. Iwanowicz, M.K. Schall, K. Smalling, D. Tillitt, and T. Wagner. 2020. Ecological risk assessment of environmental stress and bioactive chemicals to riverine fish populations: an individual-based model of smallmouth bass Micropterus dolomieu. Ecological Modelling 438:109322. | October 2020 |
| Li, Y., T. Wagner, Y. Jiao, R. Lorants, and C.A Murphy. Accepted. Evaluating spatial and temporal variability in growth and mortality for recreational fisheries with limited catch data. Canadian Journal of Fisheries and Aquatic Sciences. | November 2017 |
| Li, Y. and T. Wagner. 2019. Does incorporating gear selectivity during macroscale investigations of fish growth reduce size-selective sampling bias in parameter estimates? Canadian Journal of Fisheries and Aquatic Sciences 76:2089-2101. | February 2019 |
| Levy, O., B.A. Ball, B. Bond-Lamberty, K.S. Cheruvelil, A.O. Finley, N. Lottig, S.W. Punyasena, J. Xiao, J. Zhou, L.B. Buckley, C.T. Filstrup, T. Keitt, J.R. Kellner, A.K. Knapp, A.D. Richardson, D. Tcheng, M. Toomey, R. Vargas, J.W. Voordeckers, T. Wagner, J.W. Williams. 2014. Approaches to advance scientific understanding of macrosystems ecology. Frontiers in Ecology and the Environment 12:15-23. | Download | February 2014 |
| Lapierre, J-F., S.M. Collins, S.K. Oliver, E.H. Stanley, T. Wagner. 2021. Inconsistent browning of Northeastern US lakes despite increased precipitation and recovery from acidification. Ecosphere 12 e03415. | March 2021 |
| Lapierre JF, Webster KE, Hanks E, Wagner T, Soranno PA, McCullough IM, Reinl KL, Domka M and Lotting NR. 2023. A continuous classification of the 476,697 lakes of the conterminous US based on geographic archetypes. Limnology and Oceanography. http://doi.org/10.1002/lno.12457 | November 2023 |
| Kepler, M.V., T. Wagner, and J.A. Sweka. 2014. Comparative bioenergetics modeling of two Lake Trout morphotypes. Transactions of the American Fisheries Society 143:1592–1604. | Download | October 2014 |
| Keagy, J., C. Drummond, K. Gilbert, C. Grozinger, J. Hamilton, H. Hines, J. Laske, C. Logan, R. Sawers, and T. Wagner. 2023. Landscape transcriptomics as a tool for addressing global change effects across diverse species. Molecular Ecology Resources. http://doi.org/10.1111/1755-0998.13796 | April 2023 |
| Irwin, B.J., T. Wagner, J.R. Bence, M.V. Kepler, W. Liu, and D.B. Hayes. 2013. Estimating spatial and temporal components of variation for fisheries count data using negative binomial mixed models. Transactions of the American Fisheries Society 142:171-183. | Download | January 2013 |
| Irwin, B., T. Wagner, and J. R. Bence. 2018. Characterization of Spatial and Temporal Variability in Fishes in Response to Climate Change. Project completion report [extended abstract], Northeast Climate Science Center. | January 2018 |
| Hansen, G.J.A., T.D. Ahrenstorff, B.J. Bethke, J. Dumke, J. Hirsch, K.E. Kovalenko, J.F. LeDuc, R.P. Maki, H. Rantala, and T. Wagner. 2020. Walleye growth declines following zebra mussel and Bythotrephes invasion. Biological Invasions 22:1481–1495. | January 2020 |
| Hansen, G.J.A., S.R. Midway, T. Wagner. 2017. Walleye recruitment is less resilient to warming water temperatures in lakes with abundant largemouth bass populations. Canadian Journal of Fisheries and Aquatic Sciences. | April 2017 |
| Grossman, G.D., R.F. Carline, and T. Wagner. Brown trout (Salmo trutta) in Spruce Creek Pennsylvania: a quarter-century perspective. 2017. Freshwater Biology 62:1143-1154. | April 2017 |
| Gordon, S., T. Wagner, K. Smalling, and O. Devereux. 2023. Estrogenic activity response to best management practice implementation in agricultural watersheds in the Chesapeake Bay Watershed. Journal of Environmental Management 326:116734. https://doi.org/10.1016/j.jenvman.2022.116734 | November 2022 |
| Gatch, A. Z. Biesinger, E. Bruestly, C. Karboski, K. Lee, T. Wagner, M. Bartron, D. Gorsky. 2021. Discovery of Successful River Spawning by Lake Trout (Salvelinus namaycush) in the Lower Niagara River, Lake Ontario. | January 2021 |
| Filstrup, C.T., T. Wagner, S.K. Oliver, C.A. Stow, K.E. Webster, E.H. Stanley, and J.A. Downing. 2018. Evidence for regional nitrogen stress on chlorophyll a in lakes across large landscape and climate gradients. Limnology and Oceanography. | February 2018 |
| Filstrup, C.T., T. Wagner, P.A. Soranno, E.H. Stanley, C.A. Stow, K.E. Webster, and J.A. Downing. 2014. Regional variability among nonlinear chlorophyll-phosphorus relationships in lakes. Limnology and Oceanography 59:1691-1703. | Abstract | Download | Publisher Website | August 2014 |
| Fergus, C.E., A.O. Finley, P.A. Soranno, T. Wagner. 2016. Spatial Variation in Nutrient and Water Color Effects on Lake Chlorophyll at Macroscales. PLoS ONE 11(10): e0164592.doi:10.1371/journal.pone.0164592. | October 2016 |
| Diefenbach, D. R., T. Wagner and G. E. Stauffer. 2014. Setting Objectives for Managing Key Deer. U.S. Department of Interior, Fish and Wildlife Service, Cooperator Science Series FWS/CSS-106-2014,Washington, D.C. | Download | June 2014 |
| Deweber, J.T., Y., Tsang, D.M. Krueger, J.B. Whittier, T. Wagner, D.M. Infante, and G. Whelan. 2014. Importance of understanding landscape biases in USGS gage locations: Implications and solutions for managers. Fisheries 39:155-163. | Download | April 2014 |
| Deweber, J.T. and T. Wagner. 2014. A regional neural network model for predicting mean daily river water temperature. Journal of Hydrology 517:187-200. | Download | June 2014 |
| Detar, J., D. Kristine, T. Wagner, and T. Greene. 2014. Evaluation of Catch-and-Release Regulations on Brook Trout in Pennsylvania Streams. North American Journal of Fisheries Management 34:49-56. | Download | January 2014 |
| DeWeber, J.T. and T. Wagner. 2018. Probabilistic measures of climate change vulnerability, adaptation action benefits, and related uncertainty from maximum temperature metric selection. Global Change Biology. | February 2018 |
| DeWeber, J.T. and T. Wagner. 2015. Translating climate change effects into everyday language: an example of more driving and less angling. Fisheries 40:395-398. | Download | August 2015 |
| DeWeber, J.T and T. Wagner. 2015. Predicting Brook Trout occurrence in stream reaches throughout their native range in the eastern United States. Transactions of the American Fisheries Society 144:11-24. | Download | December 2014 |
| DePasquale, C., T. Wagner, G.A. Archard, B. Ferguson, and V.A. Braithwaite. 2014. Learning rate and temperament in a high predation risk environment. Oecologia 176:661-667. | November 2014 |
| Davis, L.A. and T. Wagner. 2016. Scale-dependent seasonal pool habitat use by sympatric wild Brook Trout and Brown Trout populations. Transactions of the American Fisheries Society 145:888-902. | Download | June 2016 |
| Custer, C.A., J.S. North, E.M. Schliep, M.R. Verhoeven, G.J.A. Hansen, T. Wagner. 2024. Predicting climate change effects using a joint species, spatially dependent physiologically guided abundance model. Ecology, Statistical Report. https://doi.org/10.1002/ecy.4362 | June 2024 |
| Custer, C.A., D.P. Fischer, G. Smith, A. Henning, M.K. Schall, M. Shank, T.A. Wertz, and T. Wagner. 2024. Quantifying the relative importance of biotic and abiotic factors in landscape-based models of stream fish distributions. Community Ecology. https://doi.org/10.1007/s42974-024-00183-9 | May 2024 |
| Congleton, J. L., and T. Wagner. 2006. Blood-chemistry indicators of nutritional status in juvenile salmonids. Journal of Fish Biology 69:473-790. | December 2006 |
| Collins, S.M., S.K. Oliver, J.F. Lapierre, E.H. Stanley, J.R. Jones, T. Wagner. and P.A. Soranno. 2017. Lake nutrient stoichiometry is less predictable than nutrient concentrations at regional and sub-continental scales. Ecological Applications 27:1529-1540. | July 2017 |
| Collins, S.M., S. Yuan, P-T. Tan, S.K. Oliver, J.F. Lapierre, K.S. Cheruvelil, C.E. Fergus, N.K. Skaff, J.S. Stachelek, T. Wagner, P.A. Soranno. 2019. Winter precipitation and summer temperature predict lake water quality at macroscales . Water Resources Research 55:2708-2721. | March 2019 |
| Cheruvelil, S. K., S. Yuan, K.E. Webster, P-N Tan, J.F. Lapierre, S.M. Collins, C.E. Fergus, C.E. Scott, E.N. Henry, P.A. Soranno, C.T. Filstrup, T. Wagner. Creating multi-themed ecological regions for macrosystems ecology: Testing a flexible, repeatable, and accessible clustering method. Ecology and Evolution 7:3046-3058. | August 2017 |
| Cheruvelil, K.S., K. Webster, K. King, A. Poisson, T. Wagner. 2022. Taking a macroscale perspective to improve understanding of shallow lake total phosphorus and chlorophyll a. Hydrobiologia https://doi.org/10.1007/s10750-022-04811-1 | March 2022 |
| Brennan, J.C., R.W. Gale, D.A. Alvarez, J.K. Leet, Y. Li, T. Wagner, D.E. Tillitt. 2020. Factors affecting sampling strategies for design of an effects-directed analysis for endocrine-active chemicals. Environmental Toxicology and Chemistry 39:1309-1324. https://doi.org/10.1002/etc.4739 | May 2020 |
| Brenden, T. O., T. Wagner, and B.R. Murphy. 2008. Generalized linear mixed modeling as a framework for analyzing proportional size structure index data. North American Journal of Fisheries Management 28:1233-1242. | Abstract | August 2008 |
| Bartley, M.L., E.M. Hanks, E.M. Schliep, P.A. Soranno, and T. Wagner. Identifying and characterizing extrapolation in multivariate response data. PLOSE ONE. | December 2019 |
| Presentations | Presentation Date |
|---|---|
| White, S.L., W.L. Miller, S.A. Dowell, M.L. Bartron, and T. Wagner. 2018. Limited hatchery introgression into wild brook trout populations despite reoccurring stocking. Annual Meeting of The American Fisheries Society, Atlantic City, New Jersey. | August 2018 |
| White, S.L., E.M. Hanks, and T. Wagner. 2019. A novel quantitative framework for riverscape genetics highlights the importance of mainstem channels for brook trout population connectivity. Annual Meeting of the American Fisheries Society. | September 2019 |
| White, S.L., C. Gowan, T. Wagner, V.A. Braithwaite. 2015. Boldness impairs spatial learning ability in brook trout. American Fisheries Society Annual Meeting, Portland, Oregon. | August 2015 |
| White, S.L. and T. Wagner. 2018. With Connectivity Comes Challenges: Brook Trout Metapopulation Dynamics Reveal Unique Management Challenges. Society for Freshwater Science, Detroit MI. | May 2018 |
| White, S., W. Miller, S. Dowell, M. Bartron, and T. Wagner. 2018. Limited hatchery introgression in wild brook trout populations in a northcentral Pennsylvania watershed. The Pennsylvania Chapter of the American Fisheries Society. | February 2018 |
| White, S., S. Dowell, M. Bartron, and T. Wagner. 2017. Where do all the fish go? Combining multiple measures of fish movement to gain insights into brook trout population connectivity. Wild Trout Symposium, West Yellowstone, MT. | September 2017 |
| White, S., S. Dowell, M. Bartron, and T. Wagner. 2017. Where do all the fish go? Combining multiple measures of fish movement to gain insights into brook trout population connectivity. The Annual Meeting of the American Fisheries Society, Tampa FL. | August 2017 |
| White, S., L. Iwanowicz, T. Wagner. 2016. Stream temperature and stress protein regulation in Brook Trout. Susquehanna River Symposium, Bucknell University. | November 2016 |
| White, S. and T. Wagner. Movers and Stayers: Can We Predict Movement Behavior in Brook Trout? Joint meeting between the West Virginia and Pennsylvania Chapters of the American Fisheries Society, California State University of Pennsylvania. | February 2017 |
| Waraniak, J., M.S. Eackles, J. Keagy, G.D. Smith, M. Schall, S. Stark, S.L. White, D.C. Kazyak, and T. Wagner. 2024. Population genetic structure and demographic history reconstruction of introduced flathead catfish (Pylodictis olivaris) in two US mid-Atlantic rivers. Society for Freshwater Science. Philadelphia, PA. | June 2024 |
| Waraniak, J., J. Keagy, and T. Wagner. 2024. Landscape transcriptomics of wild brook trout populations (<i>Salvelinus fontinalis</i>) to successive heatwaves. Annual Meeting of the American Fisheries Society, Honolulu, HI. | August 2024 |
| Wagner, T., McLaughlin, P., Smalling, K., Breitmeyer, S., Gordon, S., and Noe, G.B., 2022. The statistical power to detect regional temporal trends in riverine contaminants in the Chesapeake Bay Watershed, USA. Chesapeake Bay Water Quality Goal Implementation Team, Toxic Contaminants Workgroup. | January 2022 |
| Wagner, T., J.T. Deweber, J. Detar, D. Kristine, and J.A. Sweka. 2013. Spatial and Temporal Dynamics in Brook Trout Density: Implications for Population Monitoring. American Fisheries Society Pennsylvania Chapter Fall Technical Meeting. | October 2013 |
| Wagner, T., E. Schliep, G. Hansen, B. Bethke, and P. Jacobson. 2018. C’mon, everyone’s doing it: joint distribution models for studying spatiotemporal dynamics of fish communities and their habitat . Annual Meeting of the American Fisheries Society, Atlantic City, NJ. | August 2018 |
| Wagner, T., C. Custer, J. North, E. Schliep M. Verhoven, GJA Hansen. 2024. Predicting fish responses to climate change using a joint species, spatially dependent physiologically guided abundance model. Annual Meeting of the American Fisheries Society, Honolulu, HI. | August 2024 |
| Wagner, T. Y. Li, V.S. Blazer, L.R. Iwanowicz, M.K. Schall, K. Smalling, D. Tillitt. 2021. Ecological risk assessment of environmental stress and bioactive chemicals to riverine fish populations: an individual-based model of smallmouth bass Micropterus dolomieu. Annual Meeting of the American Fisheries Society. | November 2021 |
| Wagner, T. 2021. Ecological Risk Assessment of Environmental Stress and Bioactive Chemicals to Riverine Fish Populations: An Individual-Based Model of Smallmouth Bass. Invited presentation. Quantitative Fisheries Center, Michigan State University. | February 2021 |
| Wagner, T. 2017. "Movers" and "Stayers": understanding brook trout movement for conservation and management. Pennsylvania Wild Trout Summit. The Future of Wild Trout in Pennsylvania. | August 2017 |
| Wagner, T. 2016. Risk assessment of contaminants to fish and wildlife populations in the Chesapeake Bay Watershed: a simulation study with smallmouth bass. PA Department of Environmental Protection, Statewide Annual Biologist Meeting. | October 2016 |
| Vidal, T., C. Jansch, B. J. Irwin, T. Wagner, J. R. Bence, J. R. Jackson, L. G. Rudstam, and W. W. Fetzer. 2014. Using variance structure as statistical indicators of large scale ecological change. Annual meeting of the American Fisheries Society, Québec City, Québec, Canada. | August 2014 |
| Vidal, T., B. J. Irwin, T. Wagner, L. G. Rudstam, J. R. Bence, and J. R. Jackson. Using variance structure to quantify perturbation induced ecological reorganization. Warnell Graduate Student Symposium, University of Georgia, Athens, GA. | February 2015 |
| Thompson, T.J., V. Blazer, A. Sperry, M. Briggs, and T. Wagner. 2018. Groundwater as a source of emerging contaminants to streams of the Chesapeake Bay Watershed. . Society for Freshwater Science, Detroit MI. | May 2018 |
| Thompson, T.J., T. Wagner, V.S. Blazer, P. Phillips, M. Briggs, and A. Sperry. 2017. Groundwater as a source of emerging contaminants in the Chesapeake Bay. U.S. Geological Survey Chesapeake Bay Meeting, Aug 23-25. | August 2017 |
| Thompson, T., T. Wagner, V. Blazer, A. Sperry, and M.A. Briggs. 2017. Groundwater as a source of emerging contaminants. Susquehanna River Symposium, Bucknell University. | November 2017 |
| Thompson, T., M. Schall, T. Wagner, V. Blazer, A. Sperry and J. Niles. An investigation into the role of groundwater as a point source of emerging contaminants to smallmouth bass in the Susquehanna River basin. 2016 Chesapeake Bay Workshop, Aug 30-Sept 1. | August 2016 |
| Thompson, T., M. Schall, T. Wagner, V. Blazer, A. Sperry and J. Niles. 2016. An investigation into the role of groundwater as a point source of emerging contaminants to smallmouth bass in the Susquehanna River basin. Joint meeting between the West Virginia and Pennsylvania Chapters of the American Fisheries Society, California State University of Pennsylvania. | February 2017 |
| Thomas, N.A., M.K. Schall, G.D. Smith, S. Stark. and T. Wagner. 2002. Using stable isotope analysis to investigate trophic positioning of flathead catfish in the Susquehanna River Basin, PA. 17th Annual River Symposium. Bucknell University, Lewsiburg, PA. | November 2022 |
| Thomas, N.A., M.K. Schall, G.D. Smith, S. Stark, and T. Wagner. Piloting the use of stable isotope analysis to understand trophic dynamics of invasive Flathead Catfish Pylodictis olivaris.PA Chapter of the American Fisheries Society, Spring Technical Meeting. Lock Have, PA. | February 2023 |
| Sweka, J.A., L. Davis, and T. Wagner. 2016. Survival of Brook and Brown Trout through the Spawning Season in a North Central Pennsylvania Watershed. 146th AFS Annual Meeting in Kansas City, Missouri, August 21-25. | August 2016 |
| Sweka, J.A. and T. Wagner. Effects of stream discharge on young-of-year brook trout density in North Central Pennsylvania. Annual Meeting of the American Fisheries Society, Atlantic City, NJ. | August 2018 |
| Stum, M., M. Marshall, C. Tzilowski, F. Buderman, and T. Wagner. 2023. Spatiotemporal Trends of Stream Fish Community Occupancy in an Appalachian US National Park. American Fisheries Society Annual Meeting, Grand Rapids, MI. | August 2023 |
| Stum, M. M. Marshall, C. Tzilkowski, F. Buderman, and T. Wagner. 2023. Documenting Spatiotemporal Trends in Fish Communities of the National Park Service Eastern Rivers and Mountains Network. Northeast Association of Fish & Wildlife Agencies, Hershey, PA. | May 2023 |
| Stark, S.k., M.K. Schall, J.D. Avery, G.D. Smith, and T. Wagner. 2021. Evaluating sampling techniques of Flathead Catfish, Plyodictis olivaris, in the Susquehanna River Basin for dietary analysis. Pennsylvania Chapter of the American Fisheries Society Spring Technical Meeting. February 11-12, 2021. | February 2021 |
| Stark, S.K., Schall, M.K., Smith, G.D., Avery, J.D., Wagner, T. 2022. Preliminary diet analysis of the invasive Flathead Catfish in the Susquehanna River Basin. Keystone Coldwater Conference & PA Chapter of the American Fisheries Society. February 25-26, 2022. | February 2022 |
| Stark, S.K., M.K. Schall, J.D. Avery, G.D. Smith, and T. Wagner. 2021. Preliminary Diet Analysis of the invasive Flathead Catfish (Pylodictis olivaris) in the Susquehanna River Basin, PA. The Annual Meeting of the American Fisheries Society. | November 2021 |
| Stark, S.K., M.K. Schall, G.D. Smith, and T. Wagner. 2023. Trophic Impacts by the Invasive Flathead Catfish (<i>Pylodictis olivaris</i>) in the Susquehanna River, PA. American Fisheries Society Annual Meeting, Grand Rapids, MI. | August 2023 |
| Stark, S.K., M.K. Schall, G.D. Smith, J.D. Avery, and T. Wagner. 2022. Comparison of collection methods for diet studies of invasive flathead catfish. Northeast Fish & Wildlife Conference. | April 2022 |
| Stark, S.K., M.K. Schall, G.D. Smith, J.D. Avery, and T. Wagner. 2021. Let’s eat! A look at the diet of the invasive Flathead Catfish (Pylodictis olivaris) in the Susquehanna River Basin, PA. Southern Division of the American Fisheries Society. | April 2021 |
| Stark, S., M. Schall, G. Smith, J. Avery, and T. Wagner. 2023. Investigating community level impacts and trophic positioning of invasive Flathead Catfish, Pylodictis olivaris, in the Susquehanna River. Northeast Association of Fish & Wildlife Agencies, Hershey, PA. | May 2023 |
| Stark, S., M. Schall, G. Smith, J. Avery, and T. Wagner. 2023. Diet Analysis of Invasive Flathead Catfish in the Susquehanna River Basin. PA Chapter of the American Fisheries Society, Spring Technical Meeting. Lock Have, PA. | February 2023 |
| Stachelek, J., C.C. Carey, K.M. Cobourn, S.M. Collins, A.R. Kemanian, T. Wagner, K.C. Weathers, W. Weng, and P.A. Soranno. 2019. Analysis of 500 lake catchments reveals the relationship between crop type, fertilizer and manure inputs and lake nutrient concentrations. 2019. Ecological Society of America Annual Meeting. | August 2019 |
| Soranno, PA., P. Hanly, KE Webster, KS Cheruvelil, NR Lottig, IM McCullough, A. McDonald, KL Reinl, EM Schliep, A Shuvo, P-N Tan, and T. Wagner. 2023. ABRUPT CHANGES IN THE PRODUCTIVITY OF 25,000 LAKES IN THE CONTINENTAL US RELATED TO CLIMATE CHANGE AND LAND USE INTENSIFICATION. ASLO Aquatic Sciences Meeting. | June 2023 |
| Soranno, P.A., T. Wagner, S.M. Collins, J-F. Lapierre, N.R. Lottig, S.K. Oliver. 2018. Spatial variation exceeds temporal variation in lake ecosystem properties at macroscales. Association for the Sciences of Limnology and Oceanography, Summer Meeting, Victoria, BC, Canada. | June 2018 |
| Soranno, P.A., K.S. Cheruvelil, E. Bissell, M.T. Bremigan, J.A. Downing, C.E. Fergus, C.T. Filstrup, N.R. Lottig, E. Norton Henry, E.H. Stanley, C. Stow, P-N. Tan, T. Wagner and K. Webster. 2013. A conceptual framework for understanding multi-scaled cause-effect relationships between terrestrial and aquatic ecosystems. Ecological Society of America, 98th Annual Meeting, August 4-9, Minneapolis, MN. | August 2013 |
| Smith, L. and T. Wagner. 2013. Seasonal movement patterns and habitat use of the Eastern Brook Trout in North-central Pennsylvania. Annual Meeting of the American Fisheries Society, September 2013. | September 2013 |
| Smith, L. and T. Wagner. 2013. Seasonal movement patterns and habitat use of the Eastern Brook Trout (Salvelinus fontinalis) and Brown Trout (Salmo trutta) in North Central Pennsylvania. American Fisheries Society Pennsylvania Chapter Fall Technical Meeting. | October 2013 |
| Smith, G.D., M.K. Schall, V.S. Blazer, H.L. Walsh, and T. Wagner. 2019. The role of disease in altering the population structure of Smallmouth Bass in the Susquehanna River Basin. International Association for Great Lakes Research (IAGLR). | June 2019 |
| Sievert, N., W. Daniel, Y. Tang, C. Paukert, D. Infante, J. Whittier, K. Herreman, J. Stewart, T. Wagner. An Assessment of Potential Changes in Habitat Classes Due to Climate Change in the Northeast Climate Science Center Region. Midwest Fish and Wildlife Conference, Grand Rapids, MI | January 2016 |
| Scott, C.E., C.E. Fergus, S.M. Collins, J-F. Lapierre, N.R. Lottig, C.T. Filstrup, N. Skaff, E.H. Stanley, P-N. Tan, T. Wagner, P.A. Soranno, and K.S. Cheruvelil. Understanding the response of lake water quality at macroscales to measures of regional and global climate. The 2015 Ecological Society of America Annual Meeting, August 9 – 15. | August 2015 |
| Scott, C.E., C.E. Fergus, N.R. Lottig, C.T. Filstrup, T. Wagner, E.H. Stanley, and P.A. Soranno. 2014. Which global and regional climate metrics at macroscales best describe lake water quality responses to climate change? Joint Aquatic Sciences Meeting, Portland, OR, USA | May 2014 |
| Schall, MK., M.L. Bartron, T. Wertz, J. Niles, V.S. Blazer, T. Wagner. Investigating movement dynamics and population genetics of smallmouth bass in the Susquehanna River Basin. 2016 Chesapeake Bay Workshop, Aug 30-Sept 1. | August 2016 |
| Schall, M.K., V.S. Blazer, T. Wagner, T. Wertz, and G. Smith. 2015. Investigation of contaminants and disease characteristics of young of the year Smallmouth Bass in the Susquehanna River basin, PA. AFS-Fish Health Section Annual Meeting, Ithaca, NY. July 13-15. | July 2015 |
| Schall, M.K., V.S. Blazer, H.L. Walsh, G.D. Smith, T. Wertz, and T. Wagner. 2022. Investigating Spatiotemporal Variability in Visual Health Assessments for Adult Smallmouth Bass. Chesapeake Community Research Symposium. Annapolis, MD. | June 2022 |
| Schall, M.K., V.S. Blazer, H.L. Walsh, G.D. Smith, T. Wertz, and T. Wager. 2021. Where do we go from here?: Quantifying spatiotemporal variability in fish health observations from Smallmouth Bass <i>Micropterus dolomieu</i> after disease and population declines. The Annual Meeting of the American Fisheries Society. | November 2021 |
| Schall, M.K., V.S. Blazer, H.L. Walsh, G. Smith, T. Wertz, and T. Wagner. 2019. Quantifying spatial variability in young of year smallmouth bass disease infections in the Chesapeake Bay Watershed. International Association for Great Lakes Research (IAGLR), Brockport, NY, June 10 – 14. | June 2019 |
| Schall, M.K., V.S. Blazer, H.L. Walsh, G. Smith, T. Wertz, and T. Wagner. 2017. EVALUATING DIFFERENCES IN FIELD OBSERVATIONS AND HISTOLOGICAL PREVALENCE OF MYXOZOAN PARASITES IN YOUNG-OF-THE-YEAR SMALLMOUTH BASS (MICROPTERUS DOLOMIEU) IN THE SUSQUEHANNA RIVER BASIN, PA. AFS FHS Annual Meeting. | April 2017 |
| Schall, M.K., V.S. Blazer, H. Walsh, T. Wertz, G. Smith, and T. Wagner. 2017. Investigating myxozoan parasite prevalence in young of the year smallmouth bass in the Susquehanna River basin, 2013-2016. U.S. Geological Survey Chesapeake Bay Meeting, Aug 23-25. | August 2017 |
| Schall, M.K., T. Wagner, V. Blazer, and T. Wertz. Movement dynamics of Smallmouth Bass in the Susquehanna River basin. Pennsylvania-Ohio 2015 Joint American Fisheries Society Annual Meeting, 25–27 February 2015. | February 2015 |
| Schall, M.K., T. Wagner, R.M. Lorantas, G.D. Smith, and V.S Blazer. Investigating trends in riverine smallmouth bass catch per effort data in Pennsylvania. Joint meeting between the West Virginia and Pennsylvania Chapters of the American Fisheries Society, California State University of Pennsylvania. | February 2017 |
| Schall, M.K., G.D. Smith, J.D. Avery, and T. Wagner. 2021. Comparing the use of multiple molecular techniques for identification of prey items in invasive Flathead Catfish (Pylodictis olivaris) diets. Southern Division of the American Fisheries Society. | April 2021 |
| Schall, M., T. Wagner, M. Bartron, V.S. Blazer and J. Niles. 2016. Movement dynamics and population genetics of smallmouth bass in the Susquehanna River Basin. Susquehanna River Symposium, Bucknell University. | November 2016 |
| Rhodes, S., S. White, T. Wagner, J. Niles. 2016.Movers and Stayers: What Factors Influence Brook Trout Movement Behavior? Susquehanna River Symposium, Bucknell University. | November 2016 |
| Rhoads, S., S. White, T. Wagner, and J. Niles. Movers and stayers: what factors influence brook trout movement? Susquehanna River Symposium, Bucknell University. | November 2016 |
| Peoples, B., W. Annis, G. Hansen, S. Midway, J. Olden, L. Thompson, T. Wagner, and M. Zink. 2022. FishScales: A contemporary stream fish community database for the conterminous United States. Joint Aquatic Sciences Meeting, Grand Rapids, MI. | May 2022 |
| Peoples, B., W. Annis, G. Hansen, S. Midway, J. Olden, L. Thompson, T. Wagner, and M. Zink. 2022. FishScales: A contemporary stream fish community database for the conterminous United States. American Fisheries Society Annual Meeting, Spokane, WA. | April 2022 |
| Oliver, S.K., S.M. Collins, P.A. Soranno, T. Wagner, E.H. Stanley, J.R. Jones, C.A. Stow, and N.R. Lottig. 2018. Long-term changes in lake nutrient concentrations across the upper Midwest and northeast United States: how does Wisconsin stack up? Wisconsin Lakes Partnership Convention, Stevens Point, WI. | April 2018 |
| Oliver, S.K., S. Collins, K.S. Cheruvelil, P.A. Soranno, E.H. Stanley, J-F. Lapierre, N. Lottig, and T. Wagner. 2016. Long-term change in lake nutrient concentrations: where are we now? Association for the Sciences of Limnology and Oceanography. | June 2016 |
| Oliver SK, Stanley EH, Cheruvelil KS, Downing J, Fergus CE, Soranno PA, Wagner T, Webster K, Winslow L. 2014. Prediction and patterns of lake depth across a 17-state region in the U.S. Joint Aquatic Sciences Meeting. Portland, OR. | May 2014 |
| Noring, A.M., G.G. Sass, S.R. Midway, J.A. VanDeHey, J.K. Raabe, D.A. Isermann, J.M. Kampa, T.P. Parks, J. Lyons, M.J. Jennings, G.J.A. Hansen, and T. Wagner. 2017. Effects of Cisco on Walleye Growth Trajectories in Northern Wisconsin Lakes. 13th International Coregonid Symposium. | September 2017 |
| Noe, G., Angermeier, P.L., Barber, L.B., Buckwalter, J., Cashman, M.J., Devereux, O., Doody, T.R., Entrekin, S., Fanelli, R.M., Hitt, N., Huber, M.E., Jasmann, J.R., Maloney, K.O., Mohs, T.G., Sabat-Bonilla, S., Smalling, K., Wagner, T., Wolf, J.C., and Hyer, K.E., 2024, Connecting conservation practices to local stream health in the Chesapeake Bay watershed. USGS Chesapeake Bay Workshop. June 23-25<sup>th</sup>. National Conservation Training Center. | June 2024 |
| Midway, S.R., B. Peoples, J.T. DeWeber, and T. Wagner. Native congener richness, not abiotic factors, predicts cyprinid introductions. ANNUAL MEETING 146th AFS Annual Meeting in Kansas City, Missouri, August 21-25, 2016. | August 2016 |
| Midway, S. M., Wagner, T. and Tracy, B. 2014. Conserving data-poor stream species: A hierarchical approach. Southern Division of the American Fisheries Society Spring Meeting, January 22-26. | January 2014 |
| Midway, S. M., S. Wayne, G. Hogue, Wagner, T. and Tracy, B. 2014. Evaluating changes in stream fish species richness over a 50-year time period within a landscape context. Southern Division of the American Fisheries Society Spring Meeting, January 22-26. | January 2014 |
| Megan K. Schall, Vicki S. Blazer, Heather L. Walsh, Geoffrey Smith, Robert Lorantas, Timothy Wertz, and Tyler Wagner. 2018. Investigating occurrence of disease characteristics and trends in smallmouth bass abundance in rivers within the Chesapeake Bay Watershed. Chesapeake Research & Modeling Symposium, June 12 - 14, Annapolis, MD. | June 2018 |
| McLaughlin, P., Y. Li, K. Smalling, and T. Wagner. 2024. Linking best management practices to riverine fish ecology. USGS Chesapeake Bay Workshop. June 23-25<sup>th</sup>. National Conservation Training Center. | June 2024 |
| McLaughlin, P., R. Alexander, J. Blomquist, O. Devereux, G. Noe, K. Smalling, and T. Wagner. 2022. Power analysis for detecting the effects of BMPs on nutrient flux reductions in the Chesapeake Bay Watershed. USGS Chesapeake Bay Workshop. June 27-30<sup>th</sup>. National Conservation Training Center. | June 2022 |
| McLaughlin, P., K.P. Krause, K.O. Maloney, T. Woods, and T. Wagner, T. 2023. Evaluating the effectiveness of joint species distribution modeling for fish communities in the Chesapeake Bay Watershed, USA. Northeaster Division and Southern New England Chapter Joint Meeting. American Fisheries Society. | January 2023 |
| McLaughlin, P., Alexander, R., Blomquist, J., Devereux, O., Noe, G., Smalling, K., and Wagner, T., 2022. Keystone Coldwater Conference & PA Chapter of the American Fisheries Society. February 25-26, 2022. | February 2022 |
| McDonald, A. and 13 coauthors. 2022. The lake is greener on the other side: A continental-scale study of the nonlinearities and heterogeneity in lake productivity response to climate change. American Geophysical Union Fall Meeting. Chicago, Il. | December 2022 |
| McCullough, I.M., K.B.S. King, P.J. Hanly, and T.Wagner. 2021. Cool, calm, and connected: freshwater connectivity and protected areas in the conterminous US. ESA Annual Meeting, Long Beach, California. | August 2021 |
| McClure, C., K. Smalling, V.Blazer, and T. Wagner. 2020. Maternal sourcing of contaminants from ovary to juvenile Smallmouth Bass in the Chesapeake Bay Watershed. Pennsylvania Chapter of the American Fisheries Society. | February 2020 |
| McClure, C. K. Smalling, V. Blazer, and T. Wagner. 2019. The spatiotemporal dynamics of contaminants in streams of the Chesapeake Bay Watershed. Annual Meeting of the American Fisheries Society. | September 2019 |
| Massie, D.L., Hansen, G., Li. Y., and T. Wagner. 2020. Do lake-specific characteristics mediate the temporal relationship between Walleye growth and warming water temperatures? Pennsylvania Chapter of the American Fisheries Society. | February 2020 |
| Massie, D.L., G. Hansen, Y. Li. and T. Wagner. 2019. Do lake-specific characteristics mediate the temporal relationship between Walleye growth and warming water temperature? Annual Meeting of the American Fisheries Society. | September 2019 |
| Massie, D., G. Smith, T. Wagner. 2016. Comparing relative abundance and population characteristics of Flathead Catfish across a range of establishment levels at the Susquehanna River.Joint meeting between the West Virginia and Pennsylvania Chapters of the American Fisheries Society, California State University of Pennsylvania. | February 2017 |
| Massie, D., G. Smith, T. Wagner. 2016. Comparing relative abundance and population characteristics of Flathead Catfish across a range of establishment levels at the Susquehanna River. Susquehanna River Symposium, Bucknell University. | November 2016 |
| Lottig, N.R., Tan, P-N, K.S. Cheruvelil, C.E. Scott, P.A. Soranno, C.A. Stow, S. Yuan, T. Wagner. 2014. TAXONOMY OF CHANGE: USING CLUSTER ANALYSIS TO IDENTIFY TEMPORAL- PATTERNS IN LIMNOLOGICAL DATA. Joint Aquatic Sciences Meeting, Portland, OR, USA | May 2014 |
| Lottig, N.R., P-N. Tan, K.S. Cheruvelil, C.E. Scott, E.H. Stanley, P.A. Soranno, C.A. Stow, T. Wagner, S. Yuan. 2016. Long-term patterns and drivers of water quality at sub-continental spatial scales. Association for the Sciences of Limnology and Oceanography. | June 2016 |
| Lorantas, R., T. Wagner, D. Arnold, J. Detar, M. Kaufmann, K. Kuhn, R. Lorson, R. Wnuk, and A. Woomer 2015. Characterizing survival of Smallmouth Bass from Age 0 to Age 1 in Pennsylvania river sections using electrofishing survey gear catch rate and regression residuals. The Annual Northeast Fish & Wildlife Conference. | April 2015 |
| Li, Y., T. Wagner, Y. Jiao, V. Blazer, D. Tillit, P. Phillips, and D. Kolpin. Risk assessment of endocrine disrupting compounds on fish and wildlife populations in Chesapeake Bay watershed: a simulation study with smallmouth bass. 2016 Chesapeake Bay Workshop, Aug 30-Sept 1. | August 2016 |
| Li, Y. and T. Wagner. 2019. Ecological risk assessment of environmental stress and bioactive chemicals to riverine fish populations: an individual-based model of smallmouth bass. American Geophysical Union Annual Conference. | December 2019 |
| Li, Y. and T. Wagner. 2016. Assessing the impacts of endocrine disrupting compounds on fish population dynamics: a case study of smallmouth bass in Pennsylvania, USA. National Conference on Ecosystem Restoration. | April 2016 |
| Lapierre, J-F., S.M. Collins, D. Seekell, P.A. Soranno, K.S. Cheruvelil, P-N. Tan, C.E. Fergus, N. Skaff, T. Wagner, M.T. Bremigan. 2016. Aligning spatial scales improves understanding of biogeochemical relationships between climate, landscape, and limnological properties. Association for the Sciences of Limnology and Oceanography. | June 2016 |
| Lapierre, J-F., S.M. Collins, C. Scott, K.S. Cheruvelil, P-N. Tan, M.T. Bremigan, T. Wagner, and P.A. Soranno. The role of spatial structure in determining the strength of the relationships among climate, landscape and limnological properties. The 2015 Ecological Society of America Annual Meeting, August 9 – 15. | August 2015 |
| Lapierre, J-F, T. Wagner, and 29 coauthors. 2022. Classification of US lakes as continuous mixtures of geographic archetypes. Joint Aquatic Sciences Meeting, Grand Rapids, MI. | May 2022 |
| Kundel, H., T. Wagner, and G.J.A. Hansen. 2022. Historical Data and Novel Invaders: Impacts of Zebra Mussels on Walleye Recruitment in MN Lakes. Joint Aquatic Sciences Meeting, Grand Rapids, MI. | May 2022 |
| Krause, K.P., K.O. Maloney, and T. Wagner. 2021. Leveraging an inter-organizational dataset and joint species distribution modeling to understand inland fish communities within the Chesapeake Bay Watershed. (Virtual) presentation at the Association of Mid-Atlantic Aquatic Biologists Meeting, 31 March 2021. | March 2021 |
| Krause, K., K. Maloney, T. Wagner. 2020. Analyzing stream fish communities of the Chesapeake Bay watershed: A joint species distribution modeling approach. Annual Meeting of the American Fisheries Society. | September 2020 |
| Kline, B., S.L. White, N. Hitt, and T. Wagner. Resource use by brook trout (Salvelinus fontinalis) in a thermally complex environment. Annual Meeting of The American Fisheries Society, Atlantic City, New Jersey. | August 2018 |
| Kline, B. S. White, N. Hitt, and T. Wagner. 2017. Personality predicts success at using thermal refugia in brook trout (Salvelinus fontinalis). Susquehanna River Symposium, Bucknell University. | November 2017 |
| King, K., T. Wagner, M.T. Bremigan, D. Infante, and K. Cheruvelil. 2021. Crossing ecosystem boundaries to better understand macroscale fish diversity in lakes and streams. Society for Freshwater Scientists Annual Meeting. | May 2021 |
| Kepler, M.V., V. Blazer, T. Wagner, H. Walsh, G. Smith. 2014. Evaluation of potential disease causing agents in young of the year smallmouth bass in the Chesapeake Bay Watershed. International Symposium on Aquatic Animal Health. Portland, OR. August 31 – 5 September. | September 2014 |
| Kepler, M.V., T. Wagner, J. A. Sweka. 2013. Comparative bioenergetics modeling of two representative strains of lean and humper lake trout (Salvenlinus namaycush) morphotypes. 69th Annual Northeast Fish & Wildlife Conference, April 7-9, Saratoga Springs, New York. | April 2013 |
| Keagy, J. and T. Wagner. 2023. A Landscape Transcriptomics Approach to Evaluating Thermal Stress in Wild Brook Trout Populations. Northeast Association of Fish & Wildlife Agencies, Hershey, PA. | May 2023 |
| Keagy, J. J. Waraniak, and T. Wagner. 2024. A Landscape Transcriptomics Approach to Evaluating and Predicting Organismal Response to Extreme Heat Events. Evolution. | July 2024 |
| Johnson, B., C. Eagles-Smith, K. Smalling, P. Bradley, S. Janssen, T. Wagner, and K. Romanok. 2024. Per- and polyfluoroalkyl (PFAS) substances in fish axial muscle tissue collected throughout the United States. USGS PFAS workshop, Reston, VA. | September 2024 |
| Irwin, B. J., and T. Wagner. 2013. Using mixed models to quantify variability in fish populations. GA Chapter of the American Fisheries Society, Jekyll Island, GA | January 2013 |
| Irwin, B. J., and T. Wagner. 2013. Shifting variance structure as a potential indicator of fish-population responses to large-scale perturbation. Southern Division of the American Fisheries Society Annual Meeting. | February 2013 |
| Irwin, B. J., T. Vidal, T. Wagner, J. R. Bence, J. R. Jackson, L. G. Rudstam, and W. W. Fetzer. 2014. Shifting variance structure as an indicator of large-scale ecological change. Annual meeting of the Ecological Society of America, Sacramento, CA. | August 2014 |
| Ikis, D., E. Post, and T. Wagner. 2015. Bird Occupancy Dynamics in Alaskan Wetlands: Why different size ponds matter? Ecological Society of America Annual Meeting. | August 2015 |
| Hodgson, O., S. Stark, M. Schall, G. Smith, K. Smalling, A. Tokranov, Z. Hopkins, and T. Wagner. 2024. Food web alterations in Susquehanna River habitats invaded by flathead catfish (<i>Pylodictus olivaris</i>). USGS Chesapeake Bay Workshop. June 23-25<sup>th</sup>. National Conservation Training Center. | June 2024 |
| Hodgson, O., S. Stark, M. Schall, G. Smith, K. Smalling, A. Tokranov, Z. Hopkins, and T. Wagner. 2024. Food web alterations in Susquehanna River habitats invaded by flathead catfish (<i>Pylodictus olivaris</i>). River Symposium, Bucknell University. | November 2024 |
| Hansen, JAG, C. Custer, H. Kundel, JKR Nelson, J. North, L. Platt, JS Read, E. Schliep, M. Verhoven, and T. Wagner. 2023. NOBODY SAID IT WAS EASY, NO ONE EVER SAID IT WOULD BE THIS HARD: QUANTIFYING FISH RESPONSES TO CLIMATE CHANGE IN LAKES OF THE MIDWESTERN UNITED STATES. ASLO Aquatic Sciences Meeting. | June 2023 |
| Hansen, JA., Custer, C., Kundel, H., North, J., Read, J.S., Schliep, E., and T. Wagner. 2022. The importance of water temperature in governing lake fish abundance across a landscape of diverse lakes. Midwest Fish and Wildlife Conference. | February 2022 |
| Hansen, GJA., C. Custer, J. North, E. Schliep M. Verhoven, D. Link, H. Masui, and T. Wagner. 2024. Projected warming and fish community responses in lakes of the Midwestern United States. Annual Meeting of the American Fisheries Society, Honolulu, HI. | August 2024 |
| Hansen, G.J.A., E.M. Schliep, J. North, C. Custer, J. Nelson, H. Kundel, and T. Wagner. 2023. Predicting climate change impacts on poikilotherms using physiologically guided species abundance models. Species on the Move Conference. | May 2023 |
| Hansen, G., B. Bethke, J. Dumke, J. Hirsch, K. Kovalenko, J. leDuc, R. Maki, H. Rantala, and T. Wagner. 2021. Impacts of invasive spiny water fleas and zebra mussels on first-year growth of walleye and yellow perch in Minnesota’s large lakes. Rainy-Lake of the Woods Watershed 2021 Forum. March 10-11, 2021. | March 2021 |
| Filstrup, C.T., T. Wagner, C.A. Stow, S.K. Oliver, E.H. Stanley, K.E. Webster, J.A. Downing. 2016. Nitrogen stress effects on lake phytoplankton vary by region based on land use. Association for the Sciences of Limnology and Oceanography. | June 2016 |
| Filstrup, C.T., S.K. Oliver, E.H. Stanley, C.A. Stow, T. Wagner, K.E. Webster, and J.A. Downing. 2015. Regional land use influences nitrogen subsidy-stress effects on lake phytoplankton. Association for the Sciences of Limnology and Oceanography 2015 Aquatic Sciences Meeting, February 2015, Granada, Spain. | February 2015 |
| Filstrup, C.T., S. Oliver, E.H. Stanley, C.A. Stow, T. Wagner, K.E. Webster, J.A. Downing. Subsidy-stress effects of nitrogen on phytoplankton biomass. Joint Aquatic Sciences Meeting, Portland, OR, 2014. | May 2014 |
| Filstrup, C.T., J-F. Lapierre, S.K. Oliver, P.A. Soranno, T. Wagner, and J.A. Downing. 2018. Spatiotemporal patterns in extreme lake chlorophyll concentrations at the sub-continental scale. Association for the Sciences of Limnology and Oceanography, Summer Meeting, Victoria, BC, Canada. | June 2018 |
| Filstrup, C. T., T. Wagner, P.A. Soranno, E.H. Hill, C.A. Stow. 2013. Regional variability in non-linear chlorophyll response to total phosphorus enrichment in lakes. ASLO 2013 Aquatic Sciences Meeting, 17-22 February, New Orleans, LA. | February 2013 |
| Fergus, C.E., A.O. Finley, P.A. Soranno, T. Wagner. Examining the nutrient-color paradigm across macroscales: Multivariate spatial relationships among lake phosphorus, water color, and chlorophyll. The 2015 Ecological Society of America Annual Meeting, August 9 – 15. | August 2015 |
| Faulk, E. and T. Wagner. 2014. Stream Fish Communities in the Delaware Water Gap National Recreation Area: A Multi-Species Occupancy Approach. American Fisheries Society, 144th Annual Meeting, August 17-12. | August 2014 |
| Deweber, J.T. and T. Wagner. 2014. The future of brook trout in changing climate and landscape. 70th Annual Northeast Fish & Wildlife Conference, Portland, Maine, April 13 –15. | April 2014 |
| Deweber, J.T. and T. Wagner. 2014. A model for predicting daily river water temperature in the Northeast and its utility for management. 70th Annual Northeast Fish & Wildlife Conference, Portland, Maine, April 13 –15. | April 2014 |
| Deweber, J. T. and T. Wagner. 2013. Climate and land use change implications for native brook trout management. American Fisheries Society Pennsylvania Chapter Fall Technical Meeting. | October 2013 |
| DeWeber, T. and T. Wagner. 2015. Predicting Mean Daily River Water Temperature to Identify Brook Trout Habitat. American Fisheries Society Annual Meeting, Portland, Oregon. | August 2015 |
| DeWeber, T. and T. Wagner. 2015. Is That the Best Metric for Predicting Climate Change Effects on Brook Trout? American Fisheries Society Annual Meeting, Portland, Oregon. | August 2015 |
| Daniel, W., N. Sievert, D. Infante, C. Paukert, J. Stewart, J. Whittier, T. Wagner, K. Herreman, and Y. Tsang. FISHTAIL: A decision support mapper for conserving stream fish habitats of the NE CSC region Midwest Fish and Wildlife Conference, Indianapolis, IN. | February 2015 |
| Custer, CA, EM Schliep, JS North, GJA Hansen, H Kundel, JKR Nelson, T Wagner. 2023. Developing a joint species, spatially dependent physiologically guided abundance model to improve predictions under future climate change scenarios. Southern Division American Fisheries Society Meeting, Norfolk, VA. | February 2023 |
| Custer, CA, EM Schliep, JS North, GJA Hansen, H Kundel, JKR Nelson, T Wagner. 2023. Developing a joint species, spatially dependent physiologically guided abundance model to improve predictions under future climate change scenarios. Northeast Association of Fish & Wildlife Agencies, Hershey, PA. | May 2023 |
| Custer, C. Fischer, D., Henning, A., Hintz, D., Schall, M.K., Shank, M., Smith, G., Wertz, T., and Wagner, T. Quantifying the roles of biotic and abiotic factors structuring stream fish communities. Keystone Coldwater Conference & PA Chapter of the American Fisheries Society. February 25-26, 2022. | February 2022 |
| Collins, S.M., S.K. Oliver, J-F. Lapierre, E.H. Stanley, J. Jones, T. Wagner, P.A. Soranno. 2016. What drives lake nutrients at continental scales, and why is it so hard to predict nutrient ratios? Association for the Sciences of Limnology and Oceanography. | June 2016 |
| Collins, S.M., S. Yuan, P.-N. Tan, S.K. Oliver, J.F. Lapierre, K.S. Cheruvelil, E. Fergus, N.K. Skaff, J. Stachelek, T. Wagner, P.A. Soranno. 2018.c. Society for Freshwater Science, Detroit MI. | May 2018 |
| Collins, S., K.S. Cheruvelil, E. Fergus, J.F. Lapierre, S. Oliver, J. Skaff, P.A. Soranno, P-N. Tan, T. Wagner, S. Yuan. 2017. Which measures of climate are the best predictors of lake water quality at sub-continental scales? Ecological Society of America Annual Meeting, Portland, OR. | August 2017 |
| Collins, K.M., E.M. Schliep, T. Wagner, and C.K. Wikle. 2024. Model-based decomposition reveals spatially varying temporal shifts in seasonal streamflow profiles across north temperate US rivers. Spatial Data Science for the Environment biannual meeting of the Statistics and the Environment Section of the American Statistical Association. Boulder, CO. | October 2024 |
| Chotlos, M., J. Keagy, M. Schall, G. Smith, A. Tokranov, Z. Hopkins, K. Smalling, C. Eagles-Smith, M. Croke, and T. Wagner. 2024. Occurrence and concentrations of per- and polyfluoroalkyl substances in invasive Channa argus populations: a transcriptomics approach for detecting contaminant exposure.USGS Chesapeake Bay Workshop. June 23-25<sup>th</sup>. National Conservation Training Center. | June 2024 |
| Chotlos, M., J. Keagy, M. Schall, G. Smith, A. Tokranov, Z. Hopkins, K. Smalling, C. Eagles-Smith, M. Croke, and T. Wagner. 2024. Occurrence and concentrations of per- and polyfluoroalkyl substances in invasive Channa argus populations: a transcriptomics approach for detecting contaminant exposure. River Symposium, Bucknell University. | November 2024 |
| Cheruvelil, K.S., T. Wagner, K. Webster, K. King, A. Poisson. 2018. Macroscale patterns and drivers of phosphorus and chlorophyll in shallow lakes. Association for the Sciences of Limnology and Oceanography, Summer Meeting, Victoria, BC, Canada. | June 2018 |
| Cheruvelil, K.S., S. Yuan, S. Collins, C.E. Fergus, C. Filstrup, E. Norton Henry, J-F. Lapierre, C. Scott, P. Soranno, P-N. Tan, T. Wagner, K. Webster. Including the freshwater landscape in a multi-themed regionalization system to capture macroscale patterns. The 2015 Ecological Society of America Annual Meeting, August 9 – 15. | August 2015 |
| Cheruvelil, K.S., P.A. Soranno, B. Liu, Q. Wang, P-N. Tan, J. Zhou, K.B.S. King, I.M. McCullough, J. Stachelek, M. Bartley, C.T. Filstrup, E.M. Hanks, J-F. Lapierre, N.R. Lottig, E.M. Schliep, T. Wagner, K.E. Webster. Ecological prediction at macroscales using big data: Does sampling design matter? ASLO-SFS Summer Meeting. | June 2020 |
| Carachilo, I., M. Croke, T. Wagner, and J. Keagy. A Landscape Transcriptomics Approach for Evaluating the Effectiveness of Riparian Buffers to Reduce Thermal Stress in Brown Trout (Salmo trutta). River Symposium, Bucknell University. | November 2024 |
| Brennan, J.C., S.R. Corsi, R.W. Gale, D.A. Alvarez, J.P. Berninger, J.K. Leet, Y. Li, T. Wagner, and D.E. Tillit. Factors affecting sampling strategies for an effects-directed analysis of EACs and identifying hotspots of concern for EAC contamination in water sources. ASLO-SFS Summer Meeting. | June 2020 |
| Blinick, N. S., H. Kundel, T. D. Ahrenstorff, B. J. Bethke, J. Hirsch, D. P. Krabbenhoft, H. M. Rantala, C. Rude, K. Vitense, T. Wagner, G.J.A. Hansen. How do zebra mussels affect walleye recruitment, food webs, and mercury concentrations? Minnesota Aquatic Invasive Species Research Center Research Showcase. September 22, 2021. Virtual Conference. | September 2021 |
| Batchelor, S., J. Keagy, and T. Wagner. 2022. A Landscape Transcriptomics Approach to Evaluating Thermal Stress in Wild Populations of <i>Salvelinus fontinalis</i>. Wild Trout Symposium. | September 2022 |
| Batchelor, S., J. Avery, M.S. Eackles, D.C. Kazyak, M. Schall, K. Smalling, G. Smith, S.L. White, and T. Wagner. 2022. Understanding the spread and impact of invasive flathead catfish in the Chesapeake Bay Watershed, USA. USGS Chesapeake Bay Workshop. June 27-30<sup>th</sup>. National Conservation Training Center. | June 2022 |
| Technical Publications | Publication Date |
|---|---|
| Wagner, T. 2007. The Statistical Power to Detect Temporal Trends in Catch per Unit Effort from Annual Gillnet Surveys for Walleye in Lake Erie. Technical report prepared for the Ohio Department of Natural Resources, Division of Wildlife, Lake Erie Fisheries Unit, Sandusky Fisheries Research Unit. Quantitative Fisheries Center Technical Report T2007-01. | January 2007 |
| Wagner, T. 2007. The Statistical Power to Detect Temporal Trends in Catch per Unit Effort from Annual Gillnet Surveys for Walleye in Lake Erie. Supplement I. Technical report prepared for the Ohio Department of Natural Resources, Division of Wildlife, Lake Erie Fisheries Unit, Sandusky Fisheries Research Unit. Quantitative Fisheries Center Technical Report T2007-02. | January 2007 |
| Noe, G., Angermeier, P.L., Barber, L.B., Buckwalter, J., Cashman, M.J., Devereux, O., Doody, T.R., Entrekin, S., Fanelli, R.M., Hitt, N., Huber, M.E., Jasmann, J.R., Maloney, K.O., Mohs, T.G., Sabat-Bonilla, S., Smalling, K., Wagner, T., Wolf, J.C., and Hyer, K.E., 2024, Connecting conservation practices to local stream health in the Chesapeake Bay watershed: U.S. Geological Survey Fact Sheet 2024–3030, 4 p., https://doi.org/10.3133/fs20243030 | June 2024 |
| Lorantas, R., Wagner, T., Arnold, D., Detar, J., Kaufmann, M., Kuhn, K., Lorson, R., Wnuk, R., and Woomer, A. 2010. Smallmouth Bass Electrofishing Catch Rate in Large Pennsylvania Rivers and Examination of Smallmouth Bass Recruitment Indices. Technical Report, Pennsylvania Fish and Boat Commission. | July 2010 |
| Kristine, D., Detar, J., Lorantas, R., Lorson, R., Wagner, T., and DeMario, D. 2010. Biological Assessment of Experimental Panfish Enhancement Regulations on Select Pennsylvania Impoundments. Technical Report, Pennsylvania Fish and Boat Commission. | January 2010 |
| Jones, M. L., Arts, M. T., Faisal, M., Ebener, M P., Wagner, T., Brenden T. O., Honeyfield D., and Wright, G. 2008. Magnitude and potential causes of mortality in four lake whitefish populations in Lakes Michigan and Huron: a multidisciplinary approach. Great Lakes Fishery Trust Project Completion Report. | January 2008 |
| Irwin, B. J., T. Wagner, M. V. Kepler, W. Liu, J. R. Bence, D. B. Hayes, and N. Lester. 2011. Spatial and temporal components of variation in Great Lake percid populations: implications for conservation and management. Great Lakes Fish and Wildlife Restoration Act, Project Completion Report. | June 2011 |
| Diefenbach, D. R., B. J. Irwin, and T. Wagner. 2011. Summary of outcomes for the structured decision making workshop for catch and release trout regulations. State College, PA. | March 2011 |
| Congleton, J., T. Wagner, W. La Voie, J. Evavold, D Fryer, and B. Sun. 2001. Evaluation of the effects of physiological condition on comparative survival of transported juvenile salmon (DACW68-00-C-0030) Annual Report, 2000. US Army Core of Engineers, Walla Walla District, Walla Walla, WA. | January 2000 |
| Congleton, J., T. Wagner, J. Evavold, and B. Sun. 2002. Evaluation of the effects of physiological condition on comparative survival of transported juvenile salmon (DACW68-00-C-0030) Annual Report, 2001. US Army Core of Engineers, Walla Walla District, Walla Walla, WA. | January 2001 |
| Congleton, J., T. Wagner, D. Jones, J. Evavold, B. Sun, and J. Hafner. 2003. Evaluation of the effects of physiological condition on comparative survival of transported juvenile salmon (DACW68-00-C-0030) Annual Report, 2002. US Army Core of Engineers, Walla Walla District, Walla Walla, WA. | January 2002 |
| Congleton, J. L., T. Wagner, J. Evavold, D. Fryer, and B. Sun. 2002. Evaluation of physiological changes in migrating juvenile salmonids and effects on performance and survival (DACW68-00-C-0031) Annual Report, 2001. US Army Core of Engineers, Walla Walla District, Walla Walla, WA. | January 2001 |
| Type | Citation | Publication Date |
|---|---|---|
| Software Release | White, S., Waraniak, J., Eackles, M., Keagy, J., Smith, G., Schall, M., Stark, S., Kazyak, D., Wagner, T., 2023, Microsatellite genotypes for flathead catfish used for analysis of genetic structuring in Pennsylvania rivers: U.S. Geological Survey data release, https://doi.org/10.5066/P13QEOK3 | December 2023 |
| Software Release | Waraniak, J., M.S. Eackles, J. Keagy, G.D. Smith, M. Schall, S. Stark, S.L. White, D.C. Kazyak, and T. Wagner. Population genetic structure and demographic history reconstruction of introduced flathead catfish (Pylodictis olivaris) in two US mid-Atlantic rivers Version 1.0.0: U.S. Geological Survey software release. Reston, Va. https://doi.org/10.5066/P13VRDLF | March 2024 |
| Software Release | Waraniak, J., J. Keagy, and T. Wagner. Landscape transcriptomic analysis detects thermal stress responses and potential adaptive variation in wild brook trout (Salvelinus fontinalis) during successive heatwaves. Version 1.0.0: U.S. Geological Survey software release. Reston, Va.https://doi.org/10.5066/P1JJXOBH | August 2024 |
| Software Release | Wagner, T., P. McLaughlin, K. E. Faunce, S. Austin, and K. Smalling. The effects of wastewater reuse on smallmouth bass (Micropterus dolomieu) relative abundance in the Shenandoah River Watershed, USA Version 1.0.0: U.S. Geological Survey software release. Reston, Va. https://doi.org/10.5066/P9JMXJ7B | May 2023 |
| Software Release | Wagner, T., McLaughlin, P., Faunce, K., Austin, S., and Smalling, K., 2023, Accumulated wastewater calculations for smallmouth bass sampling sites in the Shenandoah River Watershed, USA: U.S. Geological Survey data release, https://doi.org/10.5066/P9JTAHXZ. | July 2023 |
| Software Release | Wagner, T., E.M. SchliepFolt, J.S. North, H. Kundel, J.K. Ruzich, C.A. Custer, and G.J.A. Hansen. Predicting climate change impacts on poikilotherms using physiologically guided species abundance models. Version 1.1.0: U.S. Geological Survey software release. Reston, Va. https://doi.org/10.5066/P9YYGI5R | July 2022 |
| Data Release | Wagner, T., A. McDonald, and P. Hanly. R and Python code for analysis of productivity in thousands of US lakes in response to climate over the last 30 years. https://doi.org/10.5066/P15PMPVG | January 2024 |
| Data Release | Wagner, T. Climate-driven declines in fish abundance workflow and analysis. 2024. Version 1.0.0: U.S. Geological Survey Software Release, https://doi.org/10.5066/P13R5LMI. | 2024 |
| Software Release | T. Wagner and M. Stum. 2024. Decadal changes in stream fish communities and contemporary ecological drivers of species occupancy in two Appalachian U.S. National Parks Version 1.0.0: U.S. Geological Survey software release. Reston, Va.https://doi.org/10.5066/P1KGDEWL | April 2024 |
| Data Release | Stark, S., Schall, M.K., and Wagner, T. 2024. Feeding Habits and Ecological Implications of the Invasive Flathead Catfish, Pylodictis olivaris in the Susquehanna River Basin, Pennsylvania. U.S. Geological Survey software release; https://doi.org/10.5066/P9GP5TPH. | August 2023 |
| Software Release | Schall, M.K., G.D. Smith, V.S. Blazer, H.L. Walsh, and T. Wagner. R code for identifying factors influencing the prevalence of hyperpigmented melanistic lesions in smallmouth bass Micropterus dolomieu in the Susquehanna River Basin, Pennsylvania.https://doi.org/10.5066/P1RLB5RX | September 2024 |
| Software Release | North, J.S., E.M. Schliep, G.J.A. Hansen, J. Kundel, C.A. Custer, P. McLaughlin, and T. Wagner. 2023. Accounting for spatio-temporal variation in catchability in joint species distribution models. U.S. Geological Software release: https://doi.org/10.5066/P9DALGBL | May 2023 |
| Software Release | McLaughlin, P., Krause, K., Maloney, K., Woods, T., and Wagner, T. 2023. Evaluating the effectiveness of joint species distribution modeling for riverine fish communities: U. S. Geological survey software release, https://doi.org/10.5066/P9AH5MDN | February 2024 |
| Software Release | Kundel, H., T. Wagner, and G.J.A. Hansen. Widespread declines in walleye recruitment following zebra mussel invasion in Minnesota lakes. Version 1.0.0: U.S. Geological Survey software release. Reston, Va. https://doi.org/10.5066/P9IL595W | February 2023 |
| Software Release | Kelly L. Smalling, Kristin M. Romanok, Paul M. Bradley, Mathew C. Morriss, James L. Gray, Leslie K. Kanagy, Stephanie E. Gordon, Brianna M. Williams, Sara E. Breitmeyer, Daniel K. Jones, Collin A. Eagles-Smith, and Tyler Wagner. Per- and Polyfluoroalkyl Substances (PFAS) in U.S. Tapwater: Comparison of Public-Supply and Underserved Private-Well Exposures and Associated Health Implications. Version 1.0.0: U.S. Geological Survey software release. Reston, Va. https://doi.org/10.5066/P9MCYEVS | October 2022 |
| Software Release | Custer, C., North, J. S., Schliep, E. M., and Wagner, T. 2023. Predicting fish responses to climate change using a joint species, spatially dependent physiologically guided abundance model. U.S. Geological Survey software release, https://doi.org/10.5066/P959EMT5 | December 2023 |
| Software Release | Collins, K., E.M. Schliep, T. Wagner, and C.K. Wikle. Model-based decomposition reveals spatially varying temporal shifts in seasonal streamflow profiles across north temperate US Rivers. Version 1.0.0: U.S. Geological Survey software release. https://doi.org/10.5066/P13SGRXL | July 2024 |
| Software Release | <br>Olivia Hodgson, S. Stark, M.K. Schall, G.D. Smith, Z. Hopkins, A.K. Tokranov, K.L. Smalling, and T. Wagner. R scripts for the analysis of a predatory fish invasion on a riverine food web. Version 1.0.0: U.S. Geological Survey software release. Reston, Va. https://doi.org/10.5066/P16KW2QC | October 2024 |
| Role and Organization | Individual | Start Date | End Date |
|---|---|---|---|
| North American Lake Management Society - Member | Wagner | January 1998 | Present |
| Ecological Society of America - Member | Wagner | January 2002 | Present |
| American Fisheries Society - Student Activities subcommittee chair for AFS 2010 | Wagner | December 2009 | 2010 |
| American Fisheries Society - Secretary-Treasurer, Education Section | Wagner | October 2015 | September 2016 |
| American Fisheries Society - President- PA Chapter of AFS | Wagner | July 2010 | July 2011 |
| American Fisheries Society - Northeastern Division Representative for the Education Section of the American Fisheries Society | Wagner | September 2014 | October 2015 |
| American Fisheries Society - Member | Wagner | January 2000 | Present |