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Amphibians

Nearly 40% of America’s freshwater species are at risk of decline or vulnerable to extinction as a consequence of habitat degradation, water quality impairment, rising water temperatures and reduced water availability, invasive species, and other threats. 

Filter Total Items: 34

Capture-Mark-Recapture of Treefrogs at Bayou Teche National Wildlife Refuge

WARC researchers are gathering amphibian data to better understand the impact of natural disasters on treefrog populations and examine post-event processes.
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Capture-Mark-Recapture of Treefrogs at Bayou Teche National Wildlife Refuge

WARC researchers are gathering amphibian data to better understand the impact of natural disasters on treefrog populations and examine post-event processes.
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Agricultural Practices

Agricultural lands account for more than 50% of the lower 48 states and the effects of agricultural land use reach beyond individual fields and farms affecting terrestrial and migratory wildlife. Thus, it is important to know what long-term benefits US Department of Agriculture (USDA) conservation programs and policies have on wildlife habitat and the American public. The USDAs Conservation...
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Agricultural Practices

Agricultural lands account for more than 50% of the lower 48 states and the effects of agricultural land use reach beyond individual fields and farms affecting terrestrial and migratory wildlife. Thus, it is important to know what long-term benefits US Department of Agriculture (USDA) conservation programs and policies have on wildlife habitat and the American public. The USDAs Conservation...
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Reptile and Amphibian Road Ecology

USGS is working with many partners to help reptiles, amphibians and other animals cross roads safely, improving access to essential habitat.
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Reptile and Amphibian Road Ecology

USGS is working with many partners to help reptiles, amphibians and other animals cross roads safely, improving access to essential habitat.
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Advancing the Environmental DNA Toolkit for Ecosystem Monitoring and Management

The emerging field of Environmental DNA (eDNA) analysis allows characterization of species presence and community biodiversity by identifying trace amounts of genetic material left behind as organisms move through their environments. EESC scientists have been using eDNA technologies to detect native and rare species and as community biomonitoring tools.
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Advancing the Environmental DNA Toolkit for Ecosystem Monitoring and Management

The emerging field of Environmental DNA (eDNA) analysis allows characterization of species presence and community biodiversity by identifying trace amounts of genetic material left behind as organisms move through their environments. EESC scientists have been using eDNA technologies to detect native and rare species and as community biomonitoring tools.
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Collaborative Project to Understand Red-backed Salamander Population Dynamics and Adaptation

In 2013, the Salamander Population and Adaptation Research Network started as a partnership between researchers at Penn State University and the USGS Northeast Amphibian and Research Monitoring Initiative with the intention of creating a research network to address adaptation and population dynamics across multiple scales. Our goals are to understand impacts of land use and weather conditions on...
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Collaborative Project to Understand Red-backed Salamander Population Dynamics and Adaptation

In 2013, the Salamander Population and Adaptation Research Network started as a partnership between researchers at Penn State University and the USGS Northeast Amphibian and Research Monitoring Initiative with the intention of creating a research network to address adaptation and population dynamics across multiple scales. Our goals are to understand impacts of land use and weather conditions on...
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Monitoring Vernal Pool Amphibians in the Northeast

In 2004, the Northeast Amphibian Research Monitoring Initiative (NE ARMI) in collaboration with National Park Service and US Fish and Wildlife Service initiated a region-wide study on the distribution of vernal pools and estimate the proportion of pools that were occupied by pool-associated amphibians (specifically, wood frogs, Lithobates sylvaticus, and spotted salamanders, Ambystoma maculatum).
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Monitoring Vernal Pool Amphibians in the Northeast

In 2004, the Northeast Amphibian Research Monitoring Initiative (NE ARMI) in collaboration with National Park Service and US Fish and Wildlife Service initiated a region-wide study on the distribution of vernal pools and estimate the proportion of pools that were occupied by pool-associated amphibians (specifically, wood frogs, Lithobates sylvaticus, and spotted salamanders, Ambystoma maculatum).
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Northeast Amphibian Research and Monitoring Initiative

The U.S. Geological Survey’s Eastern Ecological Science Center is home to the Northeast Amphibian Research and Monitoring Initiative (NEARMI), one of 7 ARMI regions across the United States. NEARMI works on public lands in thirteen states from Maine to Virginia, including many National Parks and National Wildlife Refuges.
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Northeast Amphibian Research and Monitoring Initiative

The U.S. Geological Survey’s Eastern Ecological Science Center is home to the Northeast Amphibian Research and Monitoring Initiative (NEARMI), one of 7 ARMI regions across the United States. NEARMI works on public lands in thirteen states from Maine to Virginia, including many National Parks and National Wildlife Refuges.
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Species We Study: Amphibians

Across the country, USGS scientists research amphibians to help other agencies manage this historically underappreciated and now declining group. Our scientists have learned that no single threat explains global amphibian declines; instead, a variety of local and global factors are contributing. Habitat loss, disease, contaminants, and other threats are all part of the pattern.
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Species We Study: Amphibians

Across the country, USGS scientists research amphibians to help other agencies manage this historically underappreciated and now declining group. Our scientists have learned that no single threat explains global amphibian declines; instead, a variety of local and global factors are contributing. Habitat loss, disease, contaminants, and other threats are all part of the pattern.
Learn More

Using Occupancy Analysis to Understand Ecological and Environmental Stressors that Affect the Range and Abundance of Gulf Coast Waterdogs (Necturus beyeri) in Louisiana Bayous

Sampling for Gulf Coast waterdogs is providing essential information to better understand the factors that impact the species' occupancy across Louisiana.
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Using Occupancy Analysis to Understand Ecological and Environmental Stressors that Affect the Range and Abundance of Gulf Coast Waterdogs (Necturus beyeri) in Louisiana Bayous

Sampling for Gulf Coast waterdogs is providing essential information to better understand the factors that impact the species' occupancy across Louisiana.
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Effects of Saltwater Intrusion on Anuran Occupancy in Big Thicket National Preserve, Texas

WARC researchers sampled anuran populations at sites within Big Thicket National Preserve to explore saltwater intrusion on these populations.
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Effects of Saltwater Intrusion on Anuran Occupancy in Big Thicket National Preserve, Texas

WARC researchers sampled anuran populations at sites within Big Thicket National Preserve to explore saltwater intrusion on these populations.
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Acoustic Monitoring for Two Rare Frog Species in Northwest Louisiana

WARC researchers are using automated recording units to monitor southern crawfish frogs and Strecker's chorus frogs in Louisiana.
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Acoustic Monitoring for Two Rare Frog Species in Northwest Louisiana

WARC researchers are using automated recording units to monitor southern crawfish frogs and Strecker's chorus frogs in Louisiana.
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Amphibian Research and Occupancy Modeling in the South-Central Region of the Amphibian Research and Monitoring Initiative (ARMI)

In response to growing public concerns about this loss of biodiversity, the U.S. Congress funded the Amphibian Research and Monitoring Initiative (ARMI), a national program coordinated by the U.S. Geological Survey.
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Amphibian Research and Occupancy Modeling in the South-Central Region of the Amphibian Research and Monitoring Initiative (ARMI)

In response to growing public concerns about this loss of biodiversity, the U.S. Congress funded the Amphibian Research and Monitoring Initiative (ARMI), a national program coordinated by the U.S. Geological Survey.
Learn More
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