Walt Sadinski
Walt Sadinski
Science and Products
Amphibian Research and Monitoring Initiative: Midwest Region
Populations of amphibians have been declining around the world (Stokstad 2004). The US Geological Survey is working to understand the extent and causes of such declines via the Amphibian Research and Monitoring Initiative (ARMI). We are conducting research in support of this program in the Midwest Region of ARMI. Our offices and laboratories are at the Upper Midwest Environmental Sciences Center...
Amphibian encounter data and associated covariate data from the Midwest Region of Amphibian Research and Monitoring Initiative (ARMI) surveys 2002-2012
This data set contains information on detections of anuran (i.e., frogs and toads) species at six different management areas in the midwestern United States from 2002 to 2012. From 2002 to 2005 anuran communities were surveyed during the day using multiple methods at individual study wetlands—visual encounter surveys, dip net surveys, and calling surveys using multiple observers in most...
Data files supporting the paper titled "Complementing data from ground-based sensors with satellite-derived products to measure ecological changes in relation to climate lessons from temperate wetland-upland landscapes"
The files on this page contain the data used for the research described in in the paper, "Challenges in complementing data from ground-based sensors with satellite-derived products to measure ecological changes in relation to climate lessons from temperate wetland-upland landscapes" (Gallant, A.L., Sadinski, W., Brown, J.F., Senay, G.B., Roth, M.F. 2018. Sensors). Supplementary Datafile...
Filter Total Items: 14
Pan-amphibia distribution of the fungal parasite Batrachochytrium dendrobatidis varies with species and temperature
Batrachochytrium dendrobatidis (Bd) is a globally distributed fungal pathogen of amphibians that has contributed to one of the largest disease-related biodiversity losses in wildlife. Bd is regularly viewed through the lens of a global wildlife epizootic because the spread of highly virulent genetic lineages has resulted in well-documented declines and extinctions of multiple amphibian...
Authors
Daniel A. Grear, M. J. Adams, Adam R. Backlin, William J. Barichivich, Adrianne Brand, Gary M. Bucciarelli, Daniel L. Calhoun, Tara E. Chestnut, Jon D Davenport, Andrew E. Dietrich, Graziella Vittoria DiRenzo, Robert N. Fisher, Brad M. Glorioso, Evan H. Campbell Grant, Brian Halstead, Marc P Hayes, Blake Hossack, Morgan Kain, Patrick M. Kleeman, Jeffrey M. Lorch, Brome McCreary, David Miller, Brittany Mosher, Erin L. Muths, Christopher Pearl, Charles W Robinson, Mark F. Roth, Jennifer Christine Rowe, Walter Sadinski, Brent Sigafus, Iga Stasiak, Samuel Sweet, J. Hardin Waddle, Susan C. Walls, Gregory J Watkins-Colwell, Lori A Williams, Megan Winzeler
Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians
The salamander chytrid fungus (Batrachochytrium salamandrivorans [Bsal]) is causing massive mortality of salamanders in Europe. The potential for spread via international trade into North America and the high diversity of salamanders has catalyzed concern about Bsal in the U.S. Surveillance programs for invading pathogens must initially meet challenges that include low rates of...
Authors
J. Hardin Waddle, Daniel A. Grear, Brittany Mosher, Evan H. Campbell Grant, M. J. Adams, Adam R. Backlin, William J. Barichivich, Adrianne Brand, Gary M. Bucciarelli, Daniel L. Calhoun, Tara E. Chestnut, Jon D Davenport, Andrew E. Dietrich, Robert N. Fisher, Brad M. Glorioso, Brian Halstead, Marc P Hayes, R. Ken Honeycutt, Blake Hossack, Patrick M. Kleeman, Julio A. Lemos-Espinal, Jeffrey M. Lorch, Robert W. Atkinson, Erin L. Muths, Christopher Pearl, Katherine Richgels, Charles W Robinson, Mark F. Roth, Jennifer Christine Rowe, Walter Sadinski, Brent Sigafus, Iga Stasiak, Samuel Sweet, Susan C. Walls, Gregory J Watkins-Colwell, C. LeAnn White, Lori A Williams, Megan Winzeler
Climate’s cascading effects on disease, predation, and hatching success in Anaxyrus canorus, the threatened Yosemite toad
The U.S. Fish and Wildlife Service listed Anaxyrus canorus, the Yosemite toad, as federally threatened in 2014 based upon reported population declines and vulnerability to global-change factors. A. canorus lives only in California’s central Sierra Nevada at medium to sub-alpine elevations. Lands throughout its range are protected from development, but climate and other global-change...
Authors
Walter Sadinski, Alisa L. Gallant, James E. Cleaver
Quantifying climate sensitivity and climate-driven change in North American amphibian communities
Changing climate will impact species’ ranges only when environmental variability directly impacts the demography of local populations. However, measurement of demographic responses to climate change has largely been limited to single species and locations. Here we show that amphibian communities are responsive to climatic variability, using >500,000 time-series observations for 81...
Authors
David Miller, Evan H. Campbell Grant, Erin L. Muths, Staci M. Amburgey, M. J. Adams, Maxwell B. Joseph, J. Hardin Waddle, Pieter T.J. Johnson, Maureen E. Ryan, Benedikt R. Schmidt, Daniel L. Calhoun, Courtney L. Davis, Robert N. Fisher, David E. Green, Blake Hossack, Tracy A.G. Rittenhouse, Susan C. Walls, Larissa L. Bailey, Sam S. Cruickshank, Gary M. Fellers, Thomas A. Gorman, Carola A. Haas, Ward Hughson, David Pilliod, Steven J. Price, Andrew M. Ray, Walter Sadinski, Daniel Saenz, William J. Barichivich, Adrianne Brand, Cheryl S. Brehme, Rosi Dagit, Katy S. Delaney, Brad M. Glorioso, Lee B. Kats, Patrick M. Kleeman, Christopher Pearl, Carlton J. Rochester, Seth P.D. Riley, Mark F. Roth, Brent Sigafus
By
Ecosystems Mission Area, Water Resources Mission Area, Species Management Research Program, Eastern Ecological Science Center, Forest and Rangeland Ecosystem Science Center, Fort Collins Science Center, John Wesley Powell Center for Analysis and Synthesis, Northern Rocky Mountain Science Center, South Atlantic Water Science Center (SAWSC), Southwest Biological Science Center, Upper Midwest Environmental Sciences Center, Western Ecological Research Center (WERC), Wetland and Aquatic Research Center
Multi-year data from satellite- and ground-based sensors show details and scale matter in assessing climate’s effects on wetland surface water, amphibians, and landscape conditions
Long-term, interdisciplinary studies of relations between climate and ecological conditions on wetland-upland landscapes have been lacking, especially studies integrated across scales meaningful for adaptive resource management. We collected data in situ at individual wetlands, and via satellite for surrounding 4-km2 landscape blocks, to assess relations between annual weather dynamics...
Authors
Walter Sadinski, Alisa L. Gallant, Mark F. Roth, Jesslyn F. Brown, Gabriel B. Senay, Wayne L. Brininger, Perry M. Jones, Jason M. Stoker
Challenges in complementing data from ground-based sensors with satellite-derived products to measure ecological changes in relation to climate – lessons from temperate wetland-upland landscapes
Assessing climate-related ecological changes across spatiotemporal scales meaningful to resource managers is challenging because no one method reliably produces essential data at both fine and broad scales. We recently confronted such challenges while integrating data from ground- and satellite-based sensors for an assessment of four wetland-rich study areas in the U.S. Midwest. We...
Authors
Alisa L. Gallant, Walter Sadinski, Jesslyn F. Brown, Gabriel B. Senay, Mark F. Roth
Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines
Since amphibian declines were first proposed as a global phenomenon over a quarter century ago, the conservation community has made little progress in halting or reversing these trends. The early search for a “smoking gun” was replaced with the expectation that declines are caused by multiple drivers. While field observations and experiments have identified factors leading to increased...
Authors
Evan H. Campbell Grant, David Miller, Benedikt R. Schmidt, M. J. Adams, Staci M. Amburgey, Thierry Chambert, Sam S. Cruickshank, Robert N. Fisher, David E. Green, Blake Hossack, Pieter T.J. Johnson, Maxwell B. Joseph, Tracy A.G. Rittenhouse, Maureen E. Ryan, J. Hardin Waddle, Susan C. Walls, Larissa L. Bailey, Gary M. Fellers, Thomas A. Gorman, Andrew M. Ray, David Pilliod, Steven J. Price, Daniel Saenz, Walter Sadinski, Erin L. Muths
Indicators of the statuses of amphibian populations and their potential for exposure to atrazine in four midwestern U.S. conservation areas
Extensive corn production in the midwestern United States has physically eliminated or fragmented vast areas of historical amphibian habitat. Midwestern corn farmers also apply large quantities of fertilizers and herbicides, which can cause direct and indirect effects on amphibians. Limited field research regarding the statuses of midwestern amphibian populations near areas of corn...
Authors
Walter Sadinski, Mark F. Roth, Tyrone Hayes, Perry M. Jones, Alisa L. Gallant
Detecting emergence, growth, and senescence of wetland vegetation with polarimetric synthetic aperture radar (SAR) data
Wetlands provide ecosystem goods and services vitally important to humans. Land managers and policymakers working to conserve wetlands require regularly updated information on the statuses of wetlands across the landscape. However, wetlands are challenging to map remotely with high accuracy and consistency. We investigated the use of multitemporal polarimetric synthetic aperture radar...
Authors
Alisa L. Gallant, Shannon G. Kaya, Lori White, Brian Brisco, Mark F. Roth, Walter Sadinski, Jennifer Rover
Trends in amphibian occupancy in the United States
Though a third of amphibian species worldwide are thought to be imperiled, existing assessments simply categorize extinction risk, providing little information on the rate of population losses. We conducted the first analysis of the rate of change in the probability that amphibians occupy ponds and other comparable habitat features across the United States. We found that overall...
Authors
M. J. Adams, David Miller, Erin L. Muths, Paul Stephen Corn, Evan Grant, Larissa L. Bailey, Gary M. Fellers, Robert N. Fisher, Walter Sadinski, J. Hardin Waddle, Susan C. Walls
Integrated monitoring of ecological conditions in wetland-upland landscapes
Landscapes of interwoven wetlands and uplands offer a rich set of ecosystem goods and services. Managing lands to maximize ecosystem services requires information that distinguishes change caused by local actions from broader-scale shifts in climate, land use, and other forms of global change. Satellite and airborne sensors collect valuable data for this purpose, especially when the data...
Authors
Alisa L. Gallant, Walter Sadinski
Canadian SAR remote sensing for the Terrestrial Wetland Global Change Research Network (TWGCRN)
The Canada Centre for Remote Sensing (CCRS) has more than 30 years of experience investigating the use of SAR remote sensing for many applications related to terrestrial water resources. Recently, CCRS scientists began contributing to the Terrestrial Wetland Global Change Research Network (TWGCRN), a bi-national research network dedicated to assessing impacts of global change on...
Authors
Shannon G. Kaya, Brian Brisco, Andrew Cull, Alisa L. Gallant, Walter Sadinski, Dean Thompson
Science and Products
Amphibian Research and Monitoring Initiative: Midwest Region
Populations of amphibians have been declining around the world (Stokstad 2004). The US Geological Survey is working to understand the extent and causes of such declines via the Amphibian Research and Monitoring Initiative (ARMI). We are conducting research in support of this program in the Midwest Region of ARMI. Our offices and laboratories are at the Upper Midwest Environmental Sciences Center...
Amphibian encounter data and associated covariate data from the Midwest Region of Amphibian Research and Monitoring Initiative (ARMI) surveys 2002-2012
This data set contains information on detections of anuran (i.e., frogs and toads) species at six different management areas in the midwestern United States from 2002 to 2012. From 2002 to 2005 anuran communities were surveyed during the day using multiple methods at individual study wetlands—visual encounter surveys, dip net surveys, and calling surveys using multiple observers in most...
Data files supporting the paper titled "Complementing data from ground-based sensors with satellite-derived products to measure ecological changes in relation to climate lessons from temperate wetland-upland landscapes"
The files on this page contain the data used for the research described in in the paper, "Challenges in complementing data from ground-based sensors with satellite-derived products to measure ecological changes in relation to climate lessons from temperate wetland-upland landscapes" (Gallant, A.L., Sadinski, W., Brown, J.F., Senay, G.B., Roth, M.F. 2018. Sensors). Supplementary Datafile...
Filter Total Items: 14
Pan-amphibia distribution of the fungal parasite Batrachochytrium dendrobatidis varies with species and temperature
Batrachochytrium dendrobatidis (Bd) is a globally distributed fungal pathogen of amphibians that has contributed to one of the largest disease-related biodiversity losses in wildlife. Bd is regularly viewed through the lens of a global wildlife epizootic because the spread of highly virulent genetic lineages has resulted in well-documented declines and extinctions of multiple amphibian...
Authors
Daniel A. Grear, M. J. Adams, Adam R. Backlin, William J. Barichivich, Adrianne Brand, Gary M. Bucciarelli, Daniel L. Calhoun, Tara E. Chestnut, Jon D Davenport, Andrew E. Dietrich, Graziella Vittoria DiRenzo, Robert N. Fisher, Brad M. Glorioso, Evan H. Campbell Grant, Brian Halstead, Marc P Hayes, Blake Hossack, Morgan Kain, Patrick M. Kleeman, Jeffrey M. Lorch, Brome McCreary, David Miller, Brittany Mosher, Erin L. Muths, Christopher Pearl, Charles W Robinson, Mark F. Roth, Jennifer Christine Rowe, Walter Sadinski, Brent Sigafus, Iga Stasiak, Samuel Sweet, J. Hardin Waddle, Susan C. Walls, Gregory J Watkins-Colwell, Lori A Williams, Megan Winzeler
Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians
The salamander chytrid fungus (Batrachochytrium salamandrivorans [Bsal]) is causing massive mortality of salamanders in Europe. The potential for spread via international trade into North America and the high diversity of salamanders has catalyzed concern about Bsal in the U.S. Surveillance programs for invading pathogens must initially meet challenges that include low rates of...
Authors
J. Hardin Waddle, Daniel A. Grear, Brittany Mosher, Evan H. Campbell Grant, M. J. Adams, Adam R. Backlin, William J. Barichivich, Adrianne Brand, Gary M. Bucciarelli, Daniel L. Calhoun, Tara E. Chestnut, Jon D Davenport, Andrew E. Dietrich, Robert N. Fisher, Brad M. Glorioso, Brian Halstead, Marc P Hayes, R. Ken Honeycutt, Blake Hossack, Patrick M. Kleeman, Julio A. Lemos-Espinal, Jeffrey M. Lorch, Robert W. Atkinson, Erin L. Muths, Christopher Pearl, Katherine Richgels, Charles W Robinson, Mark F. Roth, Jennifer Christine Rowe, Walter Sadinski, Brent Sigafus, Iga Stasiak, Samuel Sweet, Susan C. Walls, Gregory J Watkins-Colwell, C. LeAnn White, Lori A Williams, Megan Winzeler
Climate’s cascading effects on disease, predation, and hatching success in Anaxyrus canorus, the threatened Yosemite toad
The U.S. Fish and Wildlife Service listed Anaxyrus canorus, the Yosemite toad, as federally threatened in 2014 based upon reported population declines and vulnerability to global-change factors. A. canorus lives only in California’s central Sierra Nevada at medium to sub-alpine elevations. Lands throughout its range are protected from development, but climate and other global-change...
Authors
Walter Sadinski, Alisa L. Gallant, James E. Cleaver
Quantifying climate sensitivity and climate-driven change in North American amphibian communities
Changing climate will impact species’ ranges only when environmental variability directly impacts the demography of local populations. However, measurement of demographic responses to climate change has largely been limited to single species and locations. Here we show that amphibian communities are responsive to climatic variability, using >500,000 time-series observations for 81...
Authors
David Miller, Evan H. Campbell Grant, Erin L. Muths, Staci M. Amburgey, M. J. Adams, Maxwell B. Joseph, J. Hardin Waddle, Pieter T.J. Johnson, Maureen E. Ryan, Benedikt R. Schmidt, Daniel L. Calhoun, Courtney L. Davis, Robert N. Fisher, David E. Green, Blake Hossack, Tracy A.G. Rittenhouse, Susan C. Walls, Larissa L. Bailey, Sam S. Cruickshank, Gary M. Fellers, Thomas A. Gorman, Carola A. Haas, Ward Hughson, David Pilliod, Steven J. Price, Andrew M. Ray, Walter Sadinski, Daniel Saenz, William J. Barichivich, Adrianne Brand, Cheryl S. Brehme, Rosi Dagit, Katy S. Delaney, Brad M. Glorioso, Lee B. Kats, Patrick M. Kleeman, Christopher Pearl, Carlton J. Rochester, Seth P.D. Riley, Mark F. Roth, Brent Sigafus
By
Ecosystems Mission Area, Water Resources Mission Area, Species Management Research Program, Eastern Ecological Science Center, Forest and Rangeland Ecosystem Science Center, Fort Collins Science Center, John Wesley Powell Center for Analysis and Synthesis, Northern Rocky Mountain Science Center, South Atlantic Water Science Center (SAWSC), Southwest Biological Science Center, Upper Midwest Environmental Sciences Center, Western Ecological Research Center (WERC), Wetland and Aquatic Research Center
Multi-year data from satellite- and ground-based sensors show details and scale matter in assessing climate’s effects on wetland surface water, amphibians, and landscape conditions
Long-term, interdisciplinary studies of relations between climate and ecological conditions on wetland-upland landscapes have been lacking, especially studies integrated across scales meaningful for adaptive resource management. We collected data in situ at individual wetlands, and via satellite for surrounding 4-km2 landscape blocks, to assess relations between annual weather dynamics...
Authors
Walter Sadinski, Alisa L. Gallant, Mark F. Roth, Jesslyn F. Brown, Gabriel B. Senay, Wayne L. Brininger, Perry M. Jones, Jason M. Stoker
Challenges in complementing data from ground-based sensors with satellite-derived products to measure ecological changes in relation to climate – lessons from temperate wetland-upland landscapes
Assessing climate-related ecological changes across spatiotemporal scales meaningful to resource managers is challenging because no one method reliably produces essential data at both fine and broad scales. We recently confronted such challenges while integrating data from ground- and satellite-based sensors for an assessment of four wetland-rich study areas in the U.S. Midwest. We...
Authors
Alisa L. Gallant, Walter Sadinski, Jesslyn F. Brown, Gabriel B. Senay, Mark F. Roth
Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines
Since amphibian declines were first proposed as a global phenomenon over a quarter century ago, the conservation community has made little progress in halting or reversing these trends. The early search for a “smoking gun” was replaced with the expectation that declines are caused by multiple drivers. While field observations and experiments have identified factors leading to increased...
Authors
Evan H. Campbell Grant, David Miller, Benedikt R. Schmidt, M. J. Adams, Staci M. Amburgey, Thierry Chambert, Sam S. Cruickshank, Robert N. Fisher, David E. Green, Blake Hossack, Pieter T.J. Johnson, Maxwell B. Joseph, Tracy A.G. Rittenhouse, Maureen E. Ryan, J. Hardin Waddle, Susan C. Walls, Larissa L. Bailey, Gary M. Fellers, Thomas A. Gorman, Andrew M. Ray, David Pilliod, Steven J. Price, Daniel Saenz, Walter Sadinski, Erin L. Muths
Indicators of the statuses of amphibian populations and their potential for exposure to atrazine in four midwestern U.S. conservation areas
Extensive corn production in the midwestern United States has physically eliminated or fragmented vast areas of historical amphibian habitat. Midwestern corn farmers also apply large quantities of fertilizers and herbicides, which can cause direct and indirect effects on amphibians. Limited field research regarding the statuses of midwestern amphibian populations near areas of corn...
Authors
Walter Sadinski, Mark F. Roth, Tyrone Hayes, Perry M. Jones, Alisa L. Gallant
Detecting emergence, growth, and senescence of wetland vegetation with polarimetric synthetic aperture radar (SAR) data
Wetlands provide ecosystem goods and services vitally important to humans. Land managers and policymakers working to conserve wetlands require regularly updated information on the statuses of wetlands across the landscape. However, wetlands are challenging to map remotely with high accuracy and consistency. We investigated the use of multitemporal polarimetric synthetic aperture radar...
Authors
Alisa L. Gallant, Shannon G. Kaya, Lori White, Brian Brisco, Mark F. Roth, Walter Sadinski, Jennifer Rover
Trends in amphibian occupancy in the United States
Though a third of amphibian species worldwide are thought to be imperiled, existing assessments simply categorize extinction risk, providing little information on the rate of population losses. We conducted the first analysis of the rate of change in the probability that amphibians occupy ponds and other comparable habitat features across the United States. We found that overall...
Authors
M. J. Adams, David Miller, Erin L. Muths, Paul Stephen Corn, Evan Grant, Larissa L. Bailey, Gary M. Fellers, Robert N. Fisher, Walter Sadinski, J. Hardin Waddle, Susan C. Walls
Integrated monitoring of ecological conditions in wetland-upland landscapes
Landscapes of interwoven wetlands and uplands offer a rich set of ecosystem goods and services. Managing lands to maximize ecosystem services requires information that distinguishes change caused by local actions from broader-scale shifts in climate, land use, and other forms of global change. Satellite and airborne sensors collect valuable data for this purpose, especially when the data...
Authors
Alisa L. Gallant, Walter Sadinski
Canadian SAR remote sensing for the Terrestrial Wetland Global Change Research Network (TWGCRN)
The Canada Centre for Remote Sensing (CCRS) has more than 30 years of experience investigating the use of SAR remote sensing for many applications related to terrestrial water resources. Recently, CCRS scientists began contributing to the Terrestrial Wetland Global Change Research Network (TWGCRN), a bi-national research network dedicated to assessing impacts of global change on...
Authors
Shannon G. Kaya, Brian Brisco, Andrew Cull, Alisa L. Gallant, Walter Sadinski, Dean Thompson