Bufo boreas

Common Name: 
Boreal Toad
Taxonomic Key: 
Amphibians
Legacy ID: 
2 542
Species Name: 
boreas
Publication Title: 

Wyoming Basin Rapid Ecoregional Assessment

Authors: 
Carr, N.B and R.E. Means
Publication Date: 
2013
Updated Date (text): 
2013-12-03
Parent Publication Title: 
Publication Type: 
Archive number: 
2013/0061 FORT
States: 

Pub Abstract: 

The overall goal of the Wyoming Basin Rapid Ecoregional Assessment (REA) is to provide information that supports regional planning and analysis for the management of ecological resources. The REA provides an assessment of baseline ecological conditions, an evaluation of current risks from drivers of ecosystem change (including energy development, fire, and invasive species), and a predictive capacity for evaluating future risks (including climate change). Additionally, the REA may be used for identifying priority areas for conservation or restoration and for assessing cumulative effects of multiple land uses. The Wyoming Basin REA will address Management Questions developed by the Bureau of Land Management and other agency partners for 8 major biomes and 19 species or species assemblages. The maps developed for addressing Management Questions will be integrated into overall maps of landscape-level ecological values and risks. The maps can be used to address the goals of the REA at a number of levels: for individual species, species assemblages, aquatic and terrestrial systems, and for the entire ecoregion. This allows flexibility in how the products of the REA are compiled to inform planning and management actions across a broad range of spatial scales.

Publication Title: 

Wyoming Basin Rapid Ecoregional Assessment: Work Plan

Authors: 
Carr, N.B., S.L. Garman, A. Walters, A. Ray, C.P. Melcher, J.S. Wesner, M.S. O’Donnell, K.R. Sherrill, N.C. Babel, and Z.H. Bowen
Publication Date: 
2013
Updated Date (text): 
2013-05-29
Parent Publication Title: 
U.S. Geological Survey
Publication Type: 
Archive number: 
2013/0103 FORT
States: 

Pub Abstract: 

The overall goal of the Rapid Ecoregional Assessments (REAs) being conducted for the Bureau of Land Management (BLM) is to provide information that supports regional planning and analysis for the management of ecological resources. The REA provides an assessment of baseline ecological conditions, an evaluation of current risks from drivers of ecosystem change, and a predictive capacity for evaluating future risks. The REA also may be used for identifying priority areas for conservation or restoration and for assessing the cumulative effects of a variety of land uses. There are several components of the REAs. Management Questions, developed by the BLM and partners for the ecoregion, identify the information needed for addressing land-management responsibilities. Conservation Elements represent regionally significant aquatic and terrestrial species and communities that are to be conserved and (or) restored. The REA also will evaluate major drivers of ecosystem change (Change Agents) currently affecting or likely to affect the status of Conservation Elements. We selected 8 major biomes and 19 species or species assemblages to be included as Conservation Elements. We will address the four primary Change Agents—development, fire, invasive species, and climate change—required for the REA. The purpose of the work plan for the Wyoming Basin REA is to document the selection process for, and final list of, Management Questions, Conservation Elements, and Change Agents. The work plan also presents the overall assessment framework that will be used to assess the status of Conservation Elements and answer Management Questions.

Publication Title: 

The state of amphibians in the United States

Authors: 
Muths, E., M.J. Adams, E.H.C. Grant, D. Miller, P.S. Corn, and L.C. Ball
Publication Date: 
2012
Updated Date (text): 
2013-05-03
Parent Publication Title: 
Publication Type: 
Archive number: 
2012/0132 FORT

Pub Abstract: 

More than 25 years ago, scientists began to identify unexplained declines in amphibian populations around the world. Much has been learned since then, but amphibian declines have not abated and the interactions among the various threats to amphibians are not clear. Amphibian decline is a problem of local, national, and international scope that can affect ecosystem function, biodiversity, and commerce. This fact sheet provides a snapshot of the state of the amphibians and introduces examples to illustrate the range of issues in the United States.

Publication Title: 

Blackrock: biological hotspot and hotbed of collaboration [Science Feature]

Authors: 
Muths, E. and J. Wilson
Publication Date: 
2012
Updated Date (text): 
2013-05-03
Parent Publication Title: 
Publication Type: 
Archive number: 
2012/0102 FORT
States: 

Pub Abstract: 

FORT scientist Erin Muths has been leading a team of researchers investigating amphibian decline at a study site on the Blackrock Ranger Station compound on the Bridger-Teton National Forest in northwestern Wyoming. The work began in 2003, when Dr. Muths and David Pilliod (USGS Forest and Range Ecosystem Science Center) were awarded competitive funding from the USGS Amphibian Research and Monitoring Initiative (ARMI). The research team of Dr. Muths, Dr. Pilliod, and Steve Corn and Blake Hossack (USGS Northern Rocky Mountain Science Center) collaborates with the U.S. Forest Service (USFS) and other entities to study population demographics and disease ecology for the four species of amphibians that reside on the USFS Blackrock compound. This science feature describes the multi-agency collaboration, the research, and some of the findings, including the unexpected value of a mitigation site when the study site wetland flooded.

Publication Title: 

The U.S. Geological Survey Amphibian Research and Monitoring Initiative—2011 annual update

Authors: 
Adams, M.J., E. Muths, E.H.C. Grant, D.A. Miller, J.H. Waddle, S.C. Walls, and L.C. Ball
Publication Date: 
2012
Updated Date (text): 
2013-05-03
Parent Publication Title: 
Publication Type: 
Archive number: 
2012/0092 FORT

Pub Abstract: 

Objective

The Amphibian Research and Monitoring Initiative (ARMI) assists Department of the Interior (DOI) resource management agencies with information needs related to amphibian conservation. This includes research addressing threats, method development, and monitoring designed to address management needs at multiple scales…

Publication Title: 

Long-Term Observations of Boreal Toads at an ARMI Apex Site

Authors: 
Corn, P.S., E. Muths, and D.S. Pilliod
Publication Date: 
2011
Updated Date (text): 
2012-08-10
Parent Publication Title: 
Questioning Greater Yellowstone’s Future: Climate, Land Use, and Invasive Species. Proceedings of the 10th Biennial Scientific Conference on the Greater Yellowstone Ecosystem. October 11–13, 2010, Yellowstone National Park, WY, and Laramie, WY
Publication Type: 
Archive number: 
2011/0156 FORT

Pub Abstract: 

The U.S. Geological Survey’s Amphibian Research and Monitoring Initiative (ARMI) is a national project with goals to monitor the status and trends of amphibians, conduct research on causes of declines, and provide information and support to management agencies for conservation of amphibian populations. ARMI activities are organized around extensive inventories and place-based monitoring (such as collaboration with the Greater Yellowstone Inventory and Monitoring Network), and intensive population studies and research at selected locations (apex sites). One such site is an oxbow pond on the Buffalo Fork near the Black Rock Ranger Station east of Grand Teton National Park. We have been conducting mark-recapture of boreal toads (Anaxyrus boreas) at Black Rock since 2002. In concert with studies of other toad populations in the Rocky Mountains, we have documented a high rate of incidence of the chytrid fungus Batrachochytrium dendrobatidis (Bd) and a negative rate of growth of the toad population, but not the population crash or extinction observed in other populations with high prevalence of Bd...

Publication Title: 

Portrait of a Small Population of Boreal Toads (Anaxyrus boreas)

Authors: 
Muths, E. and R.D. Scherer
Publication Date: 
2011
Updated Date (text): 
2012-08-14
Parent Publication Title: 
Herpetologica
Publication Type: 
Archive number: 
2011/0166 FORT
Species: 

Pub Abstract: 
Publication Title: 

Effects of amphibian chytrid fungus on individual survival probability in wild boreal toads

Authors: 
Pilliod, D.S., E. Muths, R.D. Scherer, P.E. Bartelt, P.S. Corn, B.R. Hossack, B.A. Lambert, R. McCaffery, and C. Gaughan
Publication Date: 
2010
Updated Date (text): 
2010-12-29
Parent Publication Title: 
Conservation Biology
Publication Type: 
Archive number: 
2010/0078 FORT

Pub Abstract: 

Chytridiomycosis is linked to the worldwide decline of amphibians, yet little is known about the demographic effects of the disease. We collected capture–recapture data on three populations of boreal toads (Bufo boreas [Bufo = Anaxyrus]) in the Rocky Mountains (U.S.A.). Two of the populations were infected with chytridiomycosis and one was not. We examined the effect of the presence of amphibian chytrid fungus (Batrachochytrium dendrobatidis [Bd]; the agent of chytridiomycosis) on survival probability and population growth rate. Toads that were infected with Bd had lower average annual survival probability than uninfected individuals at sites where Bd was detected, which suggests chytridiomycosis may reduce survival by 31–42% in wild boreal toads. Toads that were negative for Bd at infected sites had survival probabilities comparable to toads at the uninfected site. Evidence that environmental covariates (particularly cold temperatures during the breeding season) influenced toad survival was weak...

Publication Title: 

Compensatory effects of recruitment and survival when amphibian populations are perturbed by disease

Authors: 
Muths, E., R.D. Scherer, and D.S. Pilliod
Publication Date: 
2011
Updated Date (text): 
2011-10-04
Parent Publication Title: 
Journal of Applied Ecology
Publication Type: 
Archive number: 
2011/0065 FORT

Pub Abstract: 

The need to increase our understanding of factors that regulate animal population dynamics has been catalysed by recent, observed declines in wildlife populations worldwide. Reliable estimates of demographic parameters are critical for addressing basic and applied ecological questions and understanding the response of parameters to perturbations (e.g. disease, habitat loss, climate change). However, to fully assess the impact of perturbation on population dynamics, all parameters contributing to the response of the target population must be estimated...

Publication Title: 

Unbiased survival estimates and evidence for skipped breeding opportunities in females

Authors: 
Muths, E., R.D. Scherer, and B.A. Lambert
Publication Date: 
2010
Updated Date (text): 
2010-11-23
Parent Publication Title: 
2010 Joint Meeting of the Society for the Study of Amphibians and Reptiles
Publication Type: 
Archive number: 
2010/0044 FORT
Species: 
States: 

Pub Abstract: 

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