Wolff JP, LC Elkins, JS Perkin, JE Pease, TB Grabowski, PT Bean, NG Smith, & KM Metizen. Multiple tracking methods reveal Guadalupe Bass dispersal is consistent with the restricted movement paradigm. Annumal Meeting of the Southern Division of the American Fisheries Society. Norfolk, Virginia. 1-5 February 2023.
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February 2023
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We assembled Guadalupe Bass radio telemetry data from three rivers in the Colorado River Basin of Texas as well as mark-recapture data from fish fitted with passive integrated transponder (PIT) tags from three rivers in the Guadalupe River Basin of Texas and found a consistent pattern of leptokurtic movement distances, a telltale sign of heterogeneous movements by stationary and mobile fish. Our results provide information that will ultimately improve management and conservation by informing habitat connectivity prioritization schemes and predicting colonization of restored habitats.
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Wolff JP, LC Elkins, JS Perkin, JE Pease, TB Grabowski, PT Bean, NG Smith, & KM Metizen. Guadalupe Bass (Micropterus treculii) movement is predictable: implications for conservation. Annumal Meeting of the Texas Chapter of the American Fisheries Society. Hunt, Texas. 3-5 February 2022.
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February 2022
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Fish movement and dispersal are critical for individual survival, (meta)population regulation, and community dynamics. We developed and validated a model to predict dispersal of Guadalupe Bass in the San Saba, Llano, and Pedernales as a method for estimating how far stocked fish might move to create an “area of influence” for stocking efforts to inform future conservation and management of the species.
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Wolff JP, LC Elkins, JS Perkin, JE Pease, TB Grabowski, & PT Bean. Guadalupe Bass (Micropterus treculii) movement is predictable: implications for conservation. 151st Annual Meeting of the American Fisheries Society. Baltimore, Maryland. 6-10 November 2021.
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August 2021
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We developed models for movement using fish size, caudal fin aspect ratio, stream size, and time since tagging, then compared these expectations with observed field data. Our model matched field data and can serve as a method for estimating how far stocked fish might move to create an “area of influence” for stocking efforts to inform future conservation and management of the species.
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Wedding, L. and A. Friedlander. 2009. A biogeographic assessment of the Hawaiian Islands Humpback Whale National Marine Sanctuary. Annual Meeting of the Hawaii Conservation Conference, Honolulu, Hawaii, 29 July, 2009.
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July 2009
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Tan E & TB Grabowski. Characterizing the fish assemblage at the Waiʻōpae tide pools: Do video and snorkeler surveys yield comparable results? Tropical Conservation Biology and Environmental Science Annual Research Symposium. Hilo, Hawaii. 5-6 April 2018.
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April 2018
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Our objectives were to determine whether similar results are produced by these two survey methods, camera-based and stationary point count (SPC) diver-based surveys, and if not, assess how they can be related to each other. The preliminary data suggest the two survey methods generate comparable estimates of species presence-absence, but may yield different estimates of assemblage structure.
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Tabendera R & TB Grabowski. Comparison of fish assemblages and habitat use of native and introduced estuarine species in a fishpond complex in Hilo Hawaii. 11th Annual Tropical Conservation Biology and Environmental
Science Research Symposium. Hilo, HI. 11-12 April 2019.
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April 2019
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In terms of their hydrology and geomorphology, Hawaiian fishponds are essentially artificial estuaries, but their ecology remains largely unexamined. Community composition differences were primarily driven by differences in salinity and locations with salinity <5 ppt contained lower overall richness and higher proportion of invasive species
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Suarez B & TB Grabowski. Incorporating detection and occupancy coefficients of Pacific Islands coral reef fishes into biomass estimation procedures indicates biases of current methodologies. Kūlia i ka huliau—Striving for change: 2021 Hawaii Conservation Alliance Conference. 27-29 July 2021. Honolulu, HI [virtual].
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July 2021
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The biomass estimates generated from underwater visual surveys make two assumptions: reef fishes are perfectly detected, and all suitable habitat is occupied. These assumptions are unlikely to be met, and failing to account for them can result in biased biomass estimates. Our results represent the first effort to apply frequentist models to multiple reef fish species and estimate biomass over large regional scales; while this approach has assumptions requiring validation, it highlights several areas where current survey methods could be improved by accounting for detection and occupancy.
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Suarez B & TB Grabowski. Incorporating detection and occupancy coefficients of Pacific Islands coral reef fishes into biomass estimation procedures indicates biases of current methodologies. 11th Annual TCBES Research Symposium. Hilo, HI [virtual].
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April 2021
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The biomass estimates generated from underwater visual surveys make two assumptions: reef fishes are perfectly detected, and all suitable habitat is occupied. These assumptions are unlikely to be met, and failing to account for them can result in biased biomass estimates. Our results represent the first effort to apply frequentist models to multiple reef fish species and estimate biomass over large regional scales; while this approach has assumptions requiring validation, it highlights several areas where current survey methods could be improved by accounting for detection and occupancy.
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Suarez B & TB Grabowski. Estimating detection and occupation coefficients for reef fish in the western Pacific. 11th Annual Tropical Conservation Biology and Environmental Science Research Symposium. Hilo, HI. 11-12 April 2019.
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April 2019
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Accurate detection of size, abundance, and distribution during underwater surveys is vital for population estimation and occupancy modeling in fisheries management. Species level detectability and occupancy can be assessed using this robust data set due to the method utilized during the data collection was stationary point count with two adjacent divers collecting independent survey data.
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Suarez B & TB Grabowski. Estimating detection and occupation coefficients for reef fish in the western Pacific Ocean to improve stock assessment. 2019 Joint Annual Conference of the American Fisheries Society and The Wildlife Society. Reno, NV. 29 September - 03 October 2019.
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October 2019
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Accurate detection of size, abundance, and distribution during underwater surveys is vital for population estimation and occupancy modeling in fisheries management. Species level detectability and occupancy can be assessed using this robust data set due to the method utilized during the data collection was stationary point count with two adjacent divers collecting independent survey data.
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Stamoulis K, A Friedlander. 2012. Investigating Spillover for a Marine Protected Area in Hawaii. 12th International Coral Reef Symposium. Cairns, Australia, 8-13 July, 2012
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July 2012
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Smith N, MR Acre, D Buckmeier, & TB Grabowski. Can a river-reservoir interface serve as nursery habitat for riverine fishes? 151st Annual Meeting of the American Fisheries Society. Baltimore, Maryland. 6-10 November 2021.
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November 2021
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We sampled larval and juvenile fish assemblages in off-channel and main channel habitats of the Lake Livingston RRI and middle Trinity River, Texas to: 1) compare species composition and abundance, and 2) evaluate the influence of connectivity on larval and juvenile fish assemblages. Sites with frequent connectivity to the main channel, in particular the RRI off-channel habitats, had higher taxonomic richness, diversity, and overall abundance than similar habitats lacking this connectivity, suggesting RRI off-channel habitat may act as a surrogate nurseries for some species when access to riverine off-channel habitat is limited.
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Roesler ER, MA Barnes, TB Grabowski, F Martinez-Andrade, & R Bittner. Influence of climate change, freshwater inflows, and changing land use on the distribution of Dwarf Seahorse on the Texas coast. 8th Texas Tech Annual Biological Sciences Symposium. Lubbock, Texas. 7-8 April 2017.
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April 2017
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Even though Dwarf Seahorse Hippocampus zosterae is considered a candidate for federal protection, virtually nothing is known of its distribution, population status, or habitat requirements. Understanding the factors influencing the current and future distribution of Dwarf Seahorse is an important first step towards determining the viability of the species in Texas waters.
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Roesler ER, MA Barnes, TB Grabowski, F Martinez-Andrade, & R Bittner. Influence of climate change, freshwater inflows, and changing land use on the distribution of Dwarf Seahorse on the Texas coast. 16th Annual Texas Tech Graduate Student Poster Competition. Lubbock, Texas. 24 March 2017.
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March 2017
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Even though Dwarf Seahorse Hippocampus zosterae is considered a candidate for federal protection, virtually nothing is known of its distribution, population status, or habitat requirements. Understanding the factors influencing the current and future distribution of Dwarf Seahorse is an important first step towards determining the viability of the species in Texas waters.
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Roesler EL, TB Grabowski, & MA Barnes. Data collection methods and species traits influence species distribution model predictions. 122nd Annual Meeting of the Texas Academy of Science. Brownwood, Texas. 1-2 March 2019.
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March 2019
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Overall, our research demonstrated the impact of data collection method and species traits on species distribution model (SDM) performance. Thus, consideration of these factors will improve the effectiveness of predictions from SDMs for conservation, management, and research.
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Roesler EL, RE Bittner, TB Grabowski, and MA Barnes. Data collection methods and species traits influence species distribution model predictions. 103rd Annual Meeting of the Ecological Society of America. New Orleans, LA. 5-10 August 2018.
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August 2018
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We conducted a study to assess the influence of data collection methods on species distribution model (SDM) performance and determined whether SDM performance differs between taxa with different life history and physical traits in coastal habitats. Our results demonstrated an impact of data collection method and species traits on SDM performance and thus, these factors warrant consideration when using SDMs.
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Rodriguez N & TB Grabowski. How will mass bleaching events affect the prevalence of ciguatera on Hawaiian reefs? 11th Annual TCBES Research Symposium. 15-16 April 2021. Hilo, HI [virtual].
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April 2021
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Ciguatera fish poisoning (CFP) is caused by consuming reef fishes containing toxins produced by dinoflagellates in the genus <i>Gambierdiscus</i>. The objectives of this study are to evaluate the relationship between coral cover loss, herbivorous fish biomass, and the probability of the high-level predator, Roi (<i>Cephalopholis argus</i>), and an herbivore targeted by anglers, Kole (<i>Ctenochaetus strigosus</i>), of being ciguatoxic using a commercially available fluorescent receptor binding assay.
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Perkin JS, JE Pease, & TB Grabowski. Loiterers, leavers, and leptokurtosis: Synthesizing movement ecology of Guadalupe Bass (Micropterus treculii). 2018 Annual Meeting of the Texas Chapter of the American Fisheries Society. College Station, Texas. 25-26 January 2018.
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January 2018
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Guadalupe Bass radio telemetry data synthesized from the Pedernales, South Llano, and Colorado Rivers of Texas indicated a consistent pattern of leptokurtosis, i.e., a distribution of movement distances characterized by a high peak representing loiterers and long tails representing leavers. Our findings have implications to Guadalupe Bass conservation and management, particularly in predicting the movement of stocked fish, assessing the potential for interactions with congeners, and evaluating the colonization potential of restored habitats.
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Pease JE, TB Grabowski, A Pease, & PT Bean. Movements and habitat use of Guadalupe Bass using radio telemetry in the lower Colorado River, Texas. 146th Annual Meeting of the American Fisheries Society. Kansas City, KS. 22-25 August 2016.
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August 2016
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revise this to reflect bass not suckers
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Miyazono, S, S Fritts, TB Grabowski, B Grisham, K Mayes, & PT Bean. N-mixture modeling for juvenile Rio Grande Blue Sucker in the Trans-Pecos region of the Rio Grande. 2016 Annual Meeting of the Desert Fishes Council. Albuquerque, NM. 15-19 November 2016.
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November 2016
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Numerous factors are likely driving the decline of Blue Suckers in Texas, including flow alteration, water quality, habitat fragmentation, and changing land use patterns, but it is not clear how these factors interact to influence the abundance and distribution of blue suckers. Our results suggest that slow current areas could be important nursery habitat for juvenile Rio Grande Blue Sucker in the Trans-Pecos region of the Rio Grande, and that changes in flow regime that affects the availability of this habitat type could significantly affect recruitment of this species.
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Miyazono, S, S Fritts, TB Grabowski, B Grisham, K Mayes, & PT Bean. Habitat associations of juvenile Rio Grande Blue Sucker in the Trans-Pecos region of the Rio Grande. 2017 Annual Meeting of the Texas Chapter of the American Fisheries Society. Corpus Christi, Texas. 19-21 January 2017.
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January 2017
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Blue Sucker Cycleptus elongatus is a state-listed threatened species in Texas and is considered vulnerable throughout its range. Once considered a single, wide-ranging species, blue suckers are now recognized as a complex of closely related, but genetically and morphologically distinct species within the genus Cycleptus, including an undescribed species within the Rio Grande Basin. Numerous factors are likely driving the decline of Blue Suckers in Texas, including flow alteration, water quality, habitat fragmentation, and changing land use patterns, but it is not clear how these factors interact to influence the abundance and distribution of blue suckers. We examined relationships between the abundance of juvenile Rio Grande Blue Sucker (RGBS), Cycleptus sp. cf. elongatus, and various abiotic variables in the Trans-Pecos region of the Rio Grande in Texas in April, May, and June 2016 using open N-mixture modeling. Pool area was the most important covariate for juvenile RGBS initial abundance. As pool area increased, the initial abundance of juvenile RGBS increased. We captured the greatest numbers in April likely because their survivorship decreased throughout the spring, and they grew larger and became less vulnerable to seining. Our preliminary results suggested that recruitment and apparent survival probability were not correlated with habitat. The lack of relationships may be because of the limited number of sampling occasions in this preliminary data set. We will continue sampling in 2017-2018.
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Miyazono S, A Pease, S Fritts, TB Grabowski, B Grisham, K Mayes, S Magnelia, & PT Bean. Habitat associations of young-of-the-year Rio Grande Blue Sucker in the Trans-Pecos region of the Rio Grande. 2018 Annual Meeting of the Texas Chapter of the American Fisheries Society. College Station, Texas. 25-26 January 2018.
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January 2018
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Numerous factors are likely driving the decline of Blue Suckers in Texas, including flow alteration, water quality degradation, habitat fragmentation, and changing land use patterns; but it is not clear how these factors interact to influence the abundance and distribution of blue suckers. While the initial abundance and recruitment of Rio Grande Blue Sucker was positively correlated with pool area, our results suggested that apparent survival probability was not correlated with habitat.
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Mikkelsen AB & TB Grabowski. All available science: Combining volunteer fish survey data and scientific monitoring to track long-term shifts in the reef fish assemblage structure on Hawaiian reefs. Tropical Conservation Biology and Environmental Science Annual Research Symposium. Hilo, Hawaii. 5-6 April 2018.
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April 2018
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Our objective is to evaluate changes in fish assemblages at windward and leeward sites off Hawaii, Maui, Oahu, and Kauai during 2000-2017 using fish survey data (n=15,159 surveys) collected by both agency biologists and citizen scientists and maintained by the Reef Environmental Education Foundation (R.E.E.F.). Our results demonstrate how citizen science and traditional monitoring can help track the complex changes across broad spatial and temporal scales that coral reef fish assemblages are undergoing in response to anthropogenic stressors.
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Mikkelsen AB & TB Grabowski. All available science: Combining volunteer fish survey data and scientific monitoring to track long-term shifts in the reef fish assemblage structure on Hawaiian reefs. 25th Annual Hawaiʻi Conservation Conference. Honolulu, Hawaii. 24-26 July 2018.
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July 2018
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Our objective is to evaluate changes in fish assemblages at windward and leeward sites off Hawaii, Maui, Oahu, and Kauai during 2000-2017 using fish survey data (n=15,159 surveys) collected by both agency biologists and citizen scientists and maintained by the Reef Environmental Education Foundation (R.E.E.F.). Our results demonstrate how citizen science and traditional monitoring can help track the complex changes across broad spatial and temporal scales that coral reef fish assemblages are undergoing in response to anthropogenic stressors.
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Massure WA, TB Grabowski, & T Arsuffi. Evaluating effects of drought and anthropogenic influences on the growth of stream fishes on the Edwards Plateau, Central Texas. 71st Annual Conference of the Southeastern Association of Fish and Wildlife Agencies. Louisville, KY. 29 October-01 November 2017.
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October 2017
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Drought and flow regime alteration have the potential to affect fish growth through numerous mechanisms and in so doing, can greatly influence demographic processes, such as recruitment and mortality. Our results will provide a better understanding of how drought coupled with anthropogenic alterations affect the overall growth rate of stream fishes and will help improve decisions made for the management and conservation of stream fishes, particularly those related to water management and instream flows.
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Life history and fishery for Hawaii's bonefish. 2011. 4th International Bonefish and Tarpon Symposium. Bonefish and Tarpon Trust. Dania Beach, Florida. November 11-12, 2011.
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November 2011
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Lessons and recommendations in the site-based manual removal of an invasive coral reef fish. Int. Marine Conservation Congress. Victoria, Canada, May 2011
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May 2011
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Kulbicki M, Arias-Gonzales E, Bellwood D, Chabanet P, Floeter S, Friedlander A, McClanahan T, McPherson J, Mouillot D, Parravicini V, Tittensor D, Vigliola L, Worm B. 2012. Connectivity, species size and the functioning of reef fish assemblages. 12th International Coral Reef Symposium, Cairns, Australia, 8-13 July, 2012
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July 2012
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Jayewardene, D. and C. Birkeland. June 04. Larval supply is not always key to coral recruitment. 10th International Coral Reef Symposium. Okinawa, Japan.
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June 2004
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Is ecosystem management achievable under constraints of the Magnuson-Stevens Act? University of Guam Marine Laboratory.
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January 2002
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Invited as the only scientist to testify as an “expert” for the Interagency Ocean Policy Task Force Pacific islands Public Meeting on September 29. Testimony on Preservation and conservation of marine resources in the tropical Pacific
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September 2009
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Honea J & TB Grabowski. Patterns of morphological variation in an introduced population of Peacock Grouper Cephalopholis argus around Hawai'i Island. 11th Annual TCBES Research Symposium. 15-16 April 2021. Hilo, HI [virtual].
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April 2021
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Morphological plasticity is an important attribute in defining the niche space of a species and can be predictive of the ability of an introduced species to establish itself. However, morphological plasticity in reef fishes, be they native or introduced, has not been extensively examined. Our results suggest that the plasticity of Peacock Grouper morphology potentially allows the species to occupy a broad range of habitats, particularly in the absence of other serranids and similar predatory species, and may contribute to its successful establishment throughout the Hawaiian Archipelago.
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Hill SA, HM Williams, TB Grabowski, & R Verble. Population estimation of Guadalupe Bass in the North Llano River. 2018 Annual Meeting of the Texas Chapter of the American Fisheries Society. College Station, Texas. 25-26 January 2018.
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January 2018
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The habitat associations and population dynamics of Guadalupe Bass has been evaluated in the relatively undisturbed system, but there has been little work conducted in more disturbed systems, such as the North Llano River. Our results suggest that maintaining streamflow and habitat connectivity will be important to supporting healthy Guadalupe Bass populations throughout the NLR and other streams in central Texas.
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Grabowski TB & AB Mikkelsen. Using citizen science to evaluate the influence of marine ornamental fishery on Hawaiian reef fish occurrence and abundance. 2019 Joint Annual Conference of the American Fisheries Society and The Wildlife Society. Reno, NV. 29 September - 03 October 2019.
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October 2019
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The impact of the marine ornamental fishery on the populations of targeted reef fishes is a contentious issue in Hawaii, in large part because the data necessary to assess impact do not exist on sufficient spatial or temporal scales. For most of the top species, there was no evidence that being targeted in the marine ornamental fishery influenced their occurrence or reported abundance in volunteer citizen diver surveys.
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Grabowski TB & AB Mikkelsen. Using citizen science to evaluate the influence of marine ornamental fishery on Hawaiian reef fish occurrence and abundance. 11th Annual Tropical Conservation Biology and Environmental Science Research Symposium. Hilo, HI. 11-12 April 2019.
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April 2019
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The impact of the marine ornamental fishery on the populations of targeted reef fishes is a contentious issue in Hawaii, in large part because the data necessary to assess impact do not exist on sufficient spatial or temporal scales. For most of the top species, there was no evidence that being targeted in the marine ornamental fishery influenced their occurrence or reported abundance in volunteer citizen diver surveys.
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Friedlander, A.M., 2012. Understanding coral reef ecosystems using a seascape approach. First Joint Institute of Marine and Atmospheric Research/Pacific Island Fisheries Science Center Symposium. Honolulu, Hawaii, February 29, 2012
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February 2012
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Friedlander, A.M. 2012. Kahekili fisheries creel surveys: what we have learned. Hawaii Coral Program-Sharing Session. Honolulu, Hawaii. February 14, 2012.
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February 2012
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Friedlander, A.M. 2011. Motu Motiru Hui Marine National Park, Chile: high biodiversity in a remote coral reef ecosystem. 25th International Congress for Conservation Biology, University of Auckland, New Zealand. December 2-4, 2011
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December 2011
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Friedlander, A.M. 2011. Marine protected areas and community-based management in Hawaii: sustainability for the future. Maui Nui Marine Resource Council. Kihei, Maui. February, 11, 2011.
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February 2011
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Friedlander AM, Williams I, Donovan M. 2012. Meta-analysis of reef fish data in Hawaii to examine natural and anthropogenic processes. Hawaii Coral Program-Sharing Session. Honolulu, Hawaii. November 2, 2012.
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November 2012
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Friedlander AM, EE DeMartini, E Brown, J Beets, J Miller. 2012. How top-down control by predatory fishes and humans influence reefs. 12th Int. Coral Reef Symposium, Cairns, Australia, 8-13 July 2012.
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July 2012
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Efficacy of marine protected areas in the Hawaiian Archipelago: importance of size, habitat, and protection. 1st Int. Marine Conservation Congress. Fairfax, Virginia. May 18-24 2009
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May 2009
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Edwards C, A Friedlander, A Green, S Sandin, J Smith. 2012. Systematic effects of fishing on global coral reef herbivore populations. 12th International Coral Reef Symposium. Cairns, Australia, July 8-13, 2012.
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July 2012
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East J, TB Grabowski, & T Birdsong. Assessment and monitoring of newly established public river access and conservation areas. 146th Annual Meeting of the American Fisheries Society. Kansas City, KS. 22-25 August 2016.
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August 2016
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Understanding the potential impacts to the newly accessible river segments and how to manage them sustainably requires precise estimates of how the public is using these sites. These results will be used to develop protocols for conducting baseline assessments and monitoring of riparian and instream habitats, biological resources, and public use at newly acquired public access lease sites, and to determine the best management practices to apply at these sites to both ensure healthy rivers and streams and public satisfaction.
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Donovan MK, ID Williams, J Dierking, AM Friedlander. 2012. Multi-scale demographic trends in an introduced Hawaiian reef fish. 12th International Coral Reef Symposium, Cairns, Australia, 8-13 July, 2012.
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July 2012
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Conklin E, C Birkeland, A Friedlander, J Giddens, K Stamoulis, C Wiggins. 2012. Effects of Introduced Predatory Grouper Roi on Hawaiian Fish Assemblage. 12th International Coral Reef Symposium, Cairns, Australia, July8-13 2012
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July 2012
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Coastal and marine spatial planning for Hawaii and the Pacific Islands. USGS Coastal and Marine Spatial Planning workshop for the western US. Sausalito, CA. Dec. 2010
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December 2010
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Closing talk at the Smithsonian Institution Research and Discoveries: the revolution of science through scuba
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May 2010
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Byers MN & TB Grabowski. Habitat use by Green Sea Turtle (Chelonia mydas) at Onekahakaha Beach Park, Hawaii Island. 25th Annual Hawaiʻi Conservation Conference. Honolulu, Hawaii. 24-26 July 2018.
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July 2018
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Our objectives are to categorize the habitat use patterns of Green Sea Turtles at Onekahakaha Beach Park in Hilo, Hawaii and evaluate whether human activity influences habitat selection. This effort to better understand how human activities influence habitat use of Green Sea Turtles is necessary to better model habitat suitability and predict carrying capacity.
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Birkeland, C., R.H. Randall, and G. Paulay. Oct 00. Changes over 23 years in a coral community at a sewer outfall in a fast-current area of Palau. 9th International Coral Reef Symposium. Bali, Indonesia.
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October 2000
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Birkeland, C. Jun 01. Can coral reef resources be managed under constraints of the Magnuson-Stevens Act? Pacific Science Congress, Guam.
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June 2001
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Birkeland, C. Feb 01. Can ecosystem management of coral reef resources be achieved? Symposium on Global Trade and Consumer Choices: Coral Reefs in Crisis at the AAAS Annual Meeting. San Francisco, CA.
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February 2001
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Bartz DE & TB Grabowski. Troubled waters: Assessment of changing patterns in juvenile shark abundance using local ecological knowledge. 2023 Hawaii Conservation Alliance. 27-30 June 2023. Honolulu, Hawaii.
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June 2023
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The local ecological knowledge contributed by fishers suggests that fishing pressure, climate change, and changing land use patterns in the Hilo Bay watershed have altered the suitability of the bay as a nursery habitat for at least two species of coastal-pelagic sharks, and has identified potential options for restoration or management strategies.
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Bartz D & TB Grabowski. The history of Hilo’s hammerheads: Reconstructing changes in the distribution and abundance of juvenile Scalloped Hammerhead Sharks in Hilo Bay, Hawai’i through the use of traditional ecological knowledge and indigenous knowledge. 11th Annual TCBES Research Symposium. 15-16 April 2021. Hilo, HI [virtual].
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April 2021
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This work will use traditional ecological knowledge to develop an baseline for the population of Scalloped Hammerheads in Hilo Bay, Hawai'i in order to inform management decisions regarding the species there.
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Aggregating species level data at the functional level: what do we gain or loose? 1st Int. Marine Conservation Congress. Fairfax, Virginia. May 18-24 2009
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May 2009
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Acre, MR, TB Grabowski, D Geeslin, A Pease, & N Smith. Streamflow effects on recruitment and migration of Blue Sucker in the lower Colorado River, Texas. 2018 Annual Meeting of the Texas Chapter of the American Fisheries Society. College Station, Texas. 25-26 January 2018.
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January 2018
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The relationships between river discharge, migratory behavior, and Blue Sucker recruitment have not been thoroughly examined, particularly in southern portions of its range. Our results suggest that large-scale movements are related to seasonal changes in temperature and river discharge prior to relocation and that the population in the lower Colorado River has had limited recruitment, and stronger cohorts appear to be associated with years with higher discharge.
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Acre, MR, TB Grabowski, D Geeslin, A Pease, & N Smith. Streamflow effects on recruitment and migration of Blue Sucker in the lower Colorado River, Texas. 2018 Annual Meeting of the Southern Division of the American Fisheries Society. San Juan, Puerto Rico. 7-11 March 2018.
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March 2018
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The relationships between river discharge, migratory behavior, and Blue Sucker recruitment have not been thoroughly examined, particularly in southern portions of its range. Our results suggest that large-scale movements are related to seasonal changes in temperature and river discharge prior to relocation and that the population in the lower Colorado River has had limited recruitment, and stronger cohorts appear to be associated with years with higher discharge.
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Acre MR, TB Grabowski, D Geeslin, & A Pease. Movements and demography of Blue Sucker in the lower Colorado River, TX. 2017 2017 Spring Meeting of the Southern Division of the American Fisheries Society. Oklahoma City, Oklahoma. 02-05 February 2017.
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February 2017
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The primary objectives of this research were to assess effects of varied streamflow levels, regulated by water releases from upstream reservoirs, on Blue Sucker movement, habitat use, and recruitment in the lower Colorado River downstream of Austin, Texas. Preliminary results suggest the population in the lower Colorado River has had limited recruitment, and stronger cohorts appear to be associated with years with higher discharge.
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Acre MR, TB Grabowski, D Geeslin, & A Pease. Movements and Demography of Blue Sucker in the lower Colorado River, TX. 2017 Annual Meeting of the Texas Chapter of the American Fisheries Society. Corpus Christi, Texas. 19-21 January 2017.
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January 2017
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The primary objectives of this research were to assess effects of varied streamflow levels, regulated by water releases from upstream reservoirs, on Blue Sucker movement, habitat use, and recruitment in the lower Colorado River downstream of Austin, Texas. Preliminary results suggest the population in the lower Colorado River has had limited recruitment, and stronger cohorts appear to be associated with years with higher discharge.
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Acre MR, TB Grabowski, D Geeslin, & A Pease. Movements and Demography of Blue Sucker in the lower Colorado River, TX. 2017 Annual Meeting of the American Society of Ichthyologists and Herpetologists. Austin, Texas. 12-16 July 2017.
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July 2017
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The primary objectives of this research were to assess effects of varied streamflow levels, regulated by water releases from upstream reservoirs, on Blue Sucker movement, habitat use, and recruitment in the lower Colorado River downstream of Austin, Texas. Preliminary results suggest the population in the lower Colorado River has had limited recruitment, and stronger cohorts appear to be associated with years with higher discharge.
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"Fish predation on coral reefs" Hanauma Bay Education Program, UH Sea Grant College program
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July 2009
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