Annika Walters, PhD (Former Employee)
Science and Products
Filter Total Items: 71
Life-history variation of two inland salmonids revealed through otolith microchemistry analysis Life-history variation of two inland salmonids revealed through otolith microchemistry analysis
Increasingly, otolith microchemistry analysis is used as a tool to trace fish migrations, especially migrations of diadromous fishes. Yet, few studies have used otolith microchemistry to trace migrations in small inland watersheds, leaving major knowledge gaps in our understanding of inland fish spatial ecology. Here, we evaluate the use of tributary habitat for spawning and describe and...
Authors
Lindsy R. Ciepiela, Annika W. Walters
Multiple approaches to surface water quality assessment provide insight for small streams experiencing oil and natural gas development Multiple approaches to surface water quality assessment provide insight for small streams experiencing oil and natural gas development
Historic, current, and future oil and natural gas development can affect water quality in streams flowing through developed areas. We compared small stream drainages in a semi-arid landscape with varying amounts of disturbance from oil and natural gas development to examine potential effects of this development on surface water quality. We used physical, chemical, and biological...
Authors
Annika W. Walters, Carlin Girard, Richard H. Walker, Aida Farag, David A. Alvarez
The interaction of exposure and warming tolerance determines fish species vulnerability to warming stream temperatures The interaction of exposure and warming tolerance determines fish species vulnerability to warming stream temperatures
Species vulnerability to climate change involves an interaction between the magnitude of change (exposure) and a species's tolerance to change. We evaluated fish species vulnerability to predicted stream temperature increases by examining warming tolerances across the Wyoming fish assemblage. Warming tolerance combines stream temperature with a thermal tolerance metric to estimate how...
Authors
Annika W. Walters, Caitlin P. Mandeville, Frank J. Rahel
Evaluating relationships between native fishes and habitat in streams affected by oil and natural gas development Evaluating relationships between native fishes and habitat in streams affected by oil and natural gas development
Oil and natural gas (ONG) development can affect aquatic ecosystems through water contamination, water withdrawals and disturbance of soil and vegetation (surface disturbance) from infrastructure development. Research on how these potential sources of watershed and aquatic ecosystem impairment can affect fish assemblages is limited. Fish–habitat relationships were evaluated across stream...
Authors
Carlin Girard, Annika W. Walters
Combining genetic, isotopic, and field data to better describe the influence of dams and diversions on Burbot Movement in the Wind River Drainage, Wyoming Combining genetic, isotopic, and field data to better describe the influence of dams and diversions on Burbot Movement in the Wind River Drainage, Wyoming
Dams and water diversions fragment habitat, entrain fish, and alter fish movement. Many Burbot Lota lota populations are declining, with dams and water diversions thought to be a major threat. We used multiple methods to identify Burbot movement patterns and assess entrainment into an irrigation system in the Wind River, Wyoming. We assessed seasonal movement of Burbot with a mark...
Authors
Zachary Hooley-Underwood, Elizabeth G. Mandeville, Paul C. Gerrity, J. W. Deromedi, Kevin Johnson, Annika W. Walters
U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2016 annual report U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2016 annual report
This is the ninth annual report highlighting U.S. Geological Survey (USGS) science and decision-support activities conducted for the Wyoming Landscape Conservation Initiative (WLCI). The activities address specific management needs identified by WLCI partner agencies. In fiscal year (FY) 2016, there were 26 active USGS WLCI science-based projects. Of these 26 projects, one project was...
Authors
Zachary H. Bowen, Ellen Aikens, Cameron L. Aldridge, Patrick J. Anderson, Timothy J. Assal, Anna D. Chalfoun, Geneva W. Chong, Cheryl A. Eddy-Miller, Steven L. Garman, Steve Germaine, Collin G. Homer, Aaron N. Johnston, Matthew J. Kauffman, Daniel J. Manier, Cynthia P. Melcher, Kirk A. Miller, Annika W. Walters, Jerrod D. Wheeler, Daniel J. Wieferich, Anna B. Wilson, Teal B. Wyckoff, Linda Zeigenfuss
By
Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis, and Research Program, Land Management Research Program, Science Analytics and Synthesis (SAS), Species Management Research Program, Earth Resources Observation and Science (EROS) Center, Fort Collins Science Center, Geology, Geophysics, and Geochemistry Science Center, Northern Rocky Mountain Science Center, Wyoming-Montana Water Science Center
Quantifying 87Sr/86Sr temporal stability and spatial heterogeneity for use in tracking fish movement Quantifying 87Sr/86Sr temporal stability and spatial heterogeneity for use in tracking fish movement
The specificity and accuracy of inferred fish origin and movement relies on describing spatial heterogeneity and temporal stability of environmental signatures. But the cost and logistics of sample collection often precludes the complete quantification of environmental signature temporal stability and spatial heterogeneity. We used repeated sampling and a novel approach (Bayesian ridge...
Authors
Lindsy R. Ciepiela, Annika W. Walters
The effectiveness of surrogate taxa to conserve freshwater biodiversity The effectiveness of surrogate taxa to conserve freshwater biodiversity
Establishing protected areas has long been an effective conservation strategy, and is often based on more readily surveyed species. The potential of any freshwater taxa to be a surrogate of other aquatic groups has not been fully explored. We compiled occurrence data on 72 species of freshwater fish, amphibians, mussels, and aquatic reptiles for the Great Plains, Wyoming. We used...
Authors
David R. Stewart, Zachary E. Underwood, Frank J. Rahel, Annika W. Walters
Comparison of burbot populations across adjacent native and introduced ranges Comparison of burbot populations across adjacent native and introduced ranges
Introduced species are a threat to biodiversity. Burbot, Lota lota, a fish native to the Wind River Drainage, Wyoming and a species of conservation concern, have been introduced into the nearby Green River Drainage, Wyoming, where they are having negative effects on native fish species. We compared these native and introduced burbot populations to evaluate potential mechanisms that could...
Authors
Annika W. Walters, Elizabeth G. Mandeville, W. Carl Saunders, Paul C. Gerrity, Joseph A. Skorupski, Zachary E. Underwood, Eric I. Gardunio
Evaluating early-warning indicators of critical transitions in natural aquatic ecosystems Evaluating early-warning indicators of critical transitions in natural aquatic ecosystems
Ecosystems can show sudden and persistent changes in state despite only incremental changes in drivers. Such critical transitions are difficult to predict, because the state of the system often shows little change before the transition. Early-warning indicators (EWIs) are hypothesized to signal the loss of system resilience and have been shown to precede critical transitions in...
Authors
Alena Sonia Gsell, Ulrike Scharfenberger, Deniz Ozkundakci, Annika W. Walters, Lars-Anders Hansson, Annette B. G. Janssen, Peeter Noges, Philip Reid, Daniel Schindler, Ellen van Donk, Vasilis Dakos, Rita Adrian
U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2015 annual report U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2015 annual report
This is the eighth annual report highlighting U.S. Geological Survey (USGS) science and decision-support activities conducted for the Wyoming Landscape Conservation Initiative (WLCI). The activities address specific management needs identified by WLCI partner agencies. In 2015, USGS scientists continued 24 WLCI projects in 5 categories: (1) acquiring and analyzing resource-condition data...
Authors
Zachary H. Bowen, Cameron L. Aldridge, Patrick J. Anderson, Timothy J. Assal, Timothy T. Bartos, Anna D. Chalfoun, Geneva W. Chong, Marie K. Dematatis, Cheryl A. Eddy-Miller, Steven L. Garman, Stephen S. Germaine, Collin G. Homer, Matthew J. Kauffman, Christopher C. Huber, Daniel J. Manier, Cynthia P. Melcher, Kirk A. Miller, Tamar Norkin, Lindsey E. Sanders, Annika W. Walters, Anna B. Wilson, Teal B. Wyckoff
Population connectivity and genetic structure of burbot (Lota lota) populations in the Wind River Basin, Wyoming Population connectivity and genetic structure of burbot (Lota lota) populations in the Wind River Basin, Wyoming
Burbot (Lota lota) occur in the Wind River Basin in central Wyoming, USA, at the southwestern extreme of the species’ native range in North America. The most stable and successful of these populations occur in six glacially carved mountain lakes on three different tributary streams and one large main stem impoundment (Boysen Reservoir) downstream from the tributary populations. Burbot...
Authors
Zachary E. Underwood, Elizabeth G. Mandeville, Annika W. Walters
Science and Products
Filter Total Items: 71
Life-history variation of two inland salmonids revealed through otolith microchemistry analysis Life-history variation of two inland salmonids revealed through otolith microchemistry analysis
Increasingly, otolith microchemistry analysis is used as a tool to trace fish migrations, especially migrations of diadromous fishes. Yet, few studies have used otolith microchemistry to trace migrations in small inland watersheds, leaving major knowledge gaps in our understanding of inland fish spatial ecology. Here, we evaluate the use of tributary habitat for spawning and describe and...
Authors
Lindsy R. Ciepiela, Annika W. Walters
Multiple approaches to surface water quality assessment provide insight for small streams experiencing oil and natural gas development Multiple approaches to surface water quality assessment provide insight for small streams experiencing oil and natural gas development
Historic, current, and future oil and natural gas development can affect water quality in streams flowing through developed areas. We compared small stream drainages in a semi-arid landscape with varying amounts of disturbance from oil and natural gas development to examine potential effects of this development on surface water quality. We used physical, chemical, and biological...
Authors
Annika W. Walters, Carlin Girard, Richard H. Walker, Aida Farag, David A. Alvarez
The interaction of exposure and warming tolerance determines fish species vulnerability to warming stream temperatures The interaction of exposure and warming tolerance determines fish species vulnerability to warming stream temperatures
Species vulnerability to climate change involves an interaction between the magnitude of change (exposure) and a species's tolerance to change. We evaluated fish species vulnerability to predicted stream temperature increases by examining warming tolerances across the Wyoming fish assemblage. Warming tolerance combines stream temperature with a thermal tolerance metric to estimate how...
Authors
Annika W. Walters, Caitlin P. Mandeville, Frank J. Rahel
Evaluating relationships between native fishes and habitat in streams affected by oil and natural gas development Evaluating relationships between native fishes and habitat in streams affected by oil and natural gas development
Oil and natural gas (ONG) development can affect aquatic ecosystems through water contamination, water withdrawals and disturbance of soil and vegetation (surface disturbance) from infrastructure development. Research on how these potential sources of watershed and aquatic ecosystem impairment can affect fish assemblages is limited. Fish–habitat relationships were evaluated across stream...
Authors
Carlin Girard, Annika W. Walters
Combining genetic, isotopic, and field data to better describe the influence of dams and diversions on Burbot Movement in the Wind River Drainage, Wyoming Combining genetic, isotopic, and field data to better describe the influence of dams and diversions on Burbot Movement in the Wind River Drainage, Wyoming
Dams and water diversions fragment habitat, entrain fish, and alter fish movement. Many Burbot Lota lota populations are declining, with dams and water diversions thought to be a major threat. We used multiple methods to identify Burbot movement patterns and assess entrainment into an irrigation system in the Wind River, Wyoming. We assessed seasonal movement of Burbot with a mark...
Authors
Zachary Hooley-Underwood, Elizabeth G. Mandeville, Paul C. Gerrity, J. W. Deromedi, Kevin Johnson, Annika W. Walters
U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2016 annual report U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2016 annual report
This is the ninth annual report highlighting U.S. Geological Survey (USGS) science and decision-support activities conducted for the Wyoming Landscape Conservation Initiative (WLCI). The activities address specific management needs identified by WLCI partner agencies. In fiscal year (FY) 2016, there were 26 active USGS WLCI science-based projects. Of these 26 projects, one project was...
Authors
Zachary H. Bowen, Ellen Aikens, Cameron L. Aldridge, Patrick J. Anderson, Timothy J. Assal, Anna D. Chalfoun, Geneva W. Chong, Cheryl A. Eddy-Miller, Steven L. Garman, Steve Germaine, Collin G. Homer, Aaron N. Johnston, Matthew J. Kauffman, Daniel J. Manier, Cynthia P. Melcher, Kirk A. Miller, Annika W. Walters, Jerrod D. Wheeler, Daniel J. Wieferich, Anna B. Wilson, Teal B. Wyckoff, Linda Zeigenfuss
By
Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis, and Research Program, Land Management Research Program, Science Analytics and Synthesis (SAS), Species Management Research Program, Earth Resources Observation and Science (EROS) Center, Fort Collins Science Center, Geology, Geophysics, and Geochemistry Science Center, Northern Rocky Mountain Science Center, Wyoming-Montana Water Science Center
Quantifying 87Sr/86Sr temporal stability and spatial heterogeneity for use in tracking fish movement Quantifying 87Sr/86Sr temporal stability and spatial heterogeneity for use in tracking fish movement
The specificity and accuracy of inferred fish origin and movement relies on describing spatial heterogeneity and temporal stability of environmental signatures. But the cost and logistics of sample collection often precludes the complete quantification of environmental signature temporal stability and spatial heterogeneity. We used repeated sampling and a novel approach (Bayesian ridge...
Authors
Lindsy R. Ciepiela, Annika W. Walters
The effectiveness of surrogate taxa to conserve freshwater biodiversity The effectiveness of surrogate taxa to conserve freshwater biodiversity
Establishing protected areas has long been an effective conservation strategy, and is often based on more readily surveyed species. The potential of any freshwater taxa to be a surrogate of other aquatic groups has not been fully explored. We compiled occurrence data on 72 species of freshwater fish, amphibians, mussels, and aquatic reptiles for the Great Plains, Wyoming. We used...
Authors
David R. Stewart, Zachary E. Underwood, Frank J. Rahel, Annika W. Walters
Comparison of burbot populations across adjacent native and introduced ranges Comparison of burbot populations across adjacent native and introduced ranges
Introduced species are a threat to biodiversity. Burbot, Lota lota, a fish native to the Wind River Drainage, Wyoming and a species of conservation concern, have been introduced into the nearby Green River Drainage, Wyoming, where they are having negative effects on native fish species. We compared these native and introduced burbot populations to evaluate potential mechanisms that could...
Authors
Annika W. Walters, Elizabeth G. Mandeville, W. Carl Saunders, Paul C. Gerrity, Joseph A. Skorupski, Zachary E. Underwood, Eric I. Gardunio
Evaluating early-warning indicators of critical transitions in natural aquatic ecosystems Evaluating early-warning indicators of critical transitions in natural aquatic ecosystems
Ecosystems can show sudden and persistent changes in state despite only incremental changes in drivers. Such critical transitions are difficult to predict, because the state of the system often shows little change before the transition. Early-warning indicators (EWIs) are hypothesized to signal the loss of system resilience and have been shown to precede critical transitions in...
Authors
Alena Sonia Gsell, Ulrike Scharfenberger, Deniz Ozkundakci, Annika W. Walters, Lars-Anders Hansson, Annette B. G. Janssen, Peeter Noges, Philip Reid, Daniel Schindler, Ellen van Donk, Vasilis Dakos, Rita Adrian
U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2015 annual report U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2015 annual report
This is the eighth annual report highlighting U.S. Geological Survey (USGS) science and decision-support activities conducted for the Wyoming Landscape Conservation Initiative (WLCI). The activities address specific management needs identified by WLCI partner agencies. In 2015, USGS scientists continued 24 WLCI projects in 5 categories: (1) acquiring and analyzing resource-condition data...
Authors
Zachary H. Bowen, Cameron L. Aldridge, Patrick J. Anderson, Timothy J. Assal, Timothy T. Bartos, Anna D. Chalfoun, Geneva W. Chong, Marie K. Dematatis, Cheryl A. Eddy-Miller, Steven L. Garman, Stephen S. Germaine, Collin G. Homer, Matthew J. Kauffman, Christopher C. Huber, Daniel J. Manier, Cynthia P. Melcher, Kirk A. Miller, Tamar Norkin, Lindsey E. Sanders, Annika W. Walters, Anna B. Wilson, Teal B. Wyckoff
Population connectivity and genetic structure of burbot (Lota lota) populations in the Wind River Basin, Wyoming Population connectivity and genetic structure of burbot (Lota lota) populations in the Wind River Basin, Wyoming
Burbot (Lota lota) occur in the Wind River Basin in central Wyoming, USA, at the southwestern extreme of the species’ native range in North America. The most stable and successful of these populations occur in six glacially carved mountain lakes on three different tributary streams and one large main stem impoundment (Boysen Reservoir) downstream from the tributary populations. Burbot...
Authors
Zachary E. Underwood, Elizabeth G. Mandeville, Annika W. Walters