Will Janousek, Ph.D. (Former Employee)
Science and Products
USGS Chronic Wasting Disease Research at NOROCK
Chronic wasting disease (CWD) is a growing management issue in the U.S. and has been detected in 36 states as of April 2025, including many western states. There is no cure or vaccine for CWD, and the disease threatens economically important animals like elk and deer. NOROCK scientists have taken a multi-pronged approach to develop actionable science including 1) evaluating CWD management options...
USGS Chronic Wasting Disease Research at the National Elk Refuge
Over the past 20 years, chronic wasting disease (CWD) in Wyoming has been spreading slowly outward from the southeastern corner of the state into the Greater Yellowstone Area and Wyoming's elk feed grounds. CWD detections have been getting closer to the National Elk Refuge, which provides supplemental feeding to approximately 8,000 elk and 500 bison each winter. NOROCK scientists have been...
Developing Tools to Evaluate Chronic Wasting Disease Transmission Risk
Chronic Wasting Disease (CWD) infects and kills ungulates (deer, elk, moose), and has been spreading across North America for the past 20 years. Some ungulate populations have declined because of CWD and there are no viable vaccines or treatments for this disease. Therefore, tools that assist wildlife managers in preventing and mitigating CWD can be powerful assets in protecting our nation’s big...
Using Pollinator Environmental DNA to Assess the Ecological Resilience of America’s Grasslands
Scientists from six USGS science centers are collaborating with USDA, university, and Tribal partners, and Department of the Interior land managers, to assess the status of pollinator communities and the distribution of species of conservation concern using environmental DNA. These methods will be used to improve assessments of habitat quality and pollinator responses to restoration, including...
By
Species Management Research Program, Eastern Ecological Science Center, Forest and Rangeland Ecosystem Science Center, Great Lakes Science Center, Northern Prairie Wildlife Research Center, Northern Rocky Mountain Science Center, Upper Midwest Environmental Sciences Center, Pacific Northwest Environmental DNA Laboratory
Western Bumble Bee and Native Pollinator Research
The western bumble bee was historically one of the most common bumble bees across the western U.S. and Canada. However, our research and others found it has declined substantially across its range and the U.S. Fish and Wildlife Service is considering it for listing under the Endangered Species Act. Bureau of Land Management, National Park Service, and other land managers need information to inform...
Filter Total Items: 16
Mountain goat (Oreamnos americanus) abundance in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada, 2022 Mountain goat (Oreamnos americanus) abundance in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada, 2022
This data contains a raster layer of predicted mountain goat abundance in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada in 2022.
Predicted habitat suitability and associated covariate data used to explain changes in mule deer age ratios from 2001 to 2023, Wyoming, USA Predicted habitat suitability and associated covariate data used to explain changes in mule deer age ratios from 2001 to 2023, Wyoming, USA
This data release contains several products to support the publication of Janousek et al. 2026. Included in this release is data to model resource selection functions for mule deer in summer and winter across Wyoming, USA from 2001 to 2022, raster data of predicted mule deer habitat suitability in summer and winter from 2000 to 2023, raster data of predictions of the number of years of...
Estimates of Elk Aggregation Metrics Calculated Across Varying Sample Sizes from Two Herds in Western Wyoming, USA Estimates of Elk Aggregation Metrics Calculated Across Varying Sample Sizes from Two Herds in Western Wyoming, USA
This data is a compilation of elk aggregation metrics (inter-animal distance, proximity rate, and kernel density contour area) calculated using GPS collar data from elk belonging to the Jackson and West Green River herds in western Wyoming, USA. The data represents two seasonal time periods (high- and low-density) for animals from each herd. Time periods of inference vary by herd and...
Mountain goats (Oreamnos americanus) in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada, 2008-2023 Mountain goats (Oreamnos americanus) in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada, 2008-2023
Dataset includes a) counts of mountain goats for multiple surveys across 37 sites inside Glacier National Park 2008-2019, along with biotic and abiotic conditions used in analysis of trend including snow, precipitation, temperature, landcover and habituation; b) predicted numbers of goats using each survey area; and c) microsatellite genotypes for goat pellet samples collected 2019-2023...
High resolution fractional tree cover and change over time for Olympic, Mount Rainier, and Glacier National Parks High resolution fractional tree cover and change over time for Olympic, Mount Rainier, and Glacier National Parks
High resolution fractional tree cover and change over time for Olympic, Mount Rainier, and Glacier National Parks from the mid-1980s to the mid-2020s. Date of annual snapshots of tree cover and the temporal range of change over time in tree cover vary by location. See metadata files associated with individual parks for specific details.
Rocky Mountain bighorn sheep datasets from Dinosaur National Monument, Colorado, Utah, USA, 2006-2022 Rocky Mountain bighorn sheep datasets from Dinosaur National Monument, Colorado, Utah, USA, 2006-2022
Tabular and raster data containing spatial capture recapture, GPS telemetry, ground observations, and genetic records for male and female Rocky Mountain bighorn sheep (Ovis canadensis canadensis) in Dinosaur National Monument from 2006 to 2022. Includes associated tabular data files required for analysis of data with spatial capture models and resource selection models, and the raster...
Assessing adaptive management to reduce ungulate aggregations: A case study involving the supplemental feeding of elk. Assessing adaptive management to reduce ungulate aggregations: A case study involving the supplemental feeding of elk.
This data release contains summarized elk aggregation metrics generated from Global Positioning System (GPS) collar locations of elk on the National Elk Refuge in Jackson, Wyoming. Aggregation metrics include annual kernel density estimates of the area used by elk on the National Elk Refuge, daily measures of inter-elk distances, daily pairwise proximity, and daily mean proximity and...
Desert bighorn sheep (Ovis canadensis nelsoni) datasets from Grand Canyon National Park, 2010-2016 Desert bighorn sheep (Ovis canadensis nelsoni) datasets from Grand Canyon National Park, 2010-2016
Tabular and raster data containing spatial capture recapture records for male and female bighorn sheep (Ovis canadensis nelsoni) in Grand Canyon National Park and surrounding landscape collected from 2010 to 2018 and associated tabular data files required for analysis of data with spatial capture connectivity models and raster data describing the ouput from SCR models. Associated tables...
Downscaled western bumble bee predicted occupancy for 2020, western conterminous United States. Downscaled western bumble bee predicted occupancy for 2020, western conterminous United States.
This data represents occupancy predictions for western bumble bee in 2020 across the western conterminous United States. This product is a 30-meter resolution downscaled version of previously published occupancy layers for the western bumble bee. For more information on original publications, see the publication listed in the Larger Works Cited Section.
Occurrence data of the western bumble bee from 1998 to 2020 across the western United States Occurrence data of the western bumble bee from 1998 to 2020 across the western United States
These raw survey data and associated explanatory covariates were used to model western bumble bee occupancy across the western conterminous United States from 1998 to 2020. These data underlie the analyses found in the publication of “Recent and future declines of a historically widespread pollinator linked to climate, land cover, and pesticides” by Janousek et al. 2023 in the...
Bumblebee Surveys in Montana, North Dakota, South Dakota, and Nevada, USA (ver. 3.0, March 2025) Bumblebee Surveys in Montana, North Dakota, South Dakota, and Nevada, USA (ver. 3.0, March 2025)
Bumblebee community surveys used occupancy survey designs primarily across lands managed by the Bureau of Land Management (BLM) and Glacier National Park (GNP). They also include a few surveys in Nevada. These records represent timed surveys that were both successful and unsuccessful in detecting bumble bees.
Neonicotinoid nitroguanidine group insecticide application rates estimated across the western conterminous United States, 2008 to 2014 Neonicotinoid nitroguanidine group insecticide application rates estimated across the western conterminous United States, 2008 to 2014
These data represents annual estimates of neonicotinoid nitroguanidine group insecticide application rates across the western conterminous United States from 2008 to 2014. This product contains seven raster layers (appearing as separate bands in a multi-band raster). Each band represents one year of the data beginning in 2008. Estimates are generated by pairing crop specific application...
Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument
Translocations have been widely used to restore and conserve bighorn sheep (Ovis canadensis) populations in North America. Some translocations have been successful, but many populations remain small and genetically isolated. Population structure can influence the viability and long-term success of reintroductions. Social ungulates often function as interconnected subpopulations...
Authors
Sarah Louise Carroll, Elizabeth P Flesch, Salix Scoresby, Emily Spencer, Rachel S. Crowhurst, Clinton W. Epps, Nathan L. Galloway, William Michael Janousek, Tabitha A. Graves
The interplay of habitat quality and temperature shape demographic patterns of mule deer (Odocoileus hemionus) in North America The interplay of habitat quality and temperature shape demographic patterns of mule deer (Odocoileus hemionus) in North America
Mule deer (Odocoileus hemionus) are declining in abundance across their broad distribution in western North America. Identifying drivers of mule deer demography could inform habitat restoration. However, linking habitat quality to vital rates is challenging and often done indirectly using proxy metrics. We combine habitat selection with climate-related effects to identify synergistic...
Authors
William Michael Janousek, Aaron N. Johnston, Sarah Bullock, Sarah Dewey, L. Embere Hall, Teagan A. Hayes, Katey Huggler, Matthew J. Kauffman, Tayler N LaSharr, Blake Lowrey, Rhiannon P. Jakopak, Kevin Monteith, Tabitha A. Graves
Estimating GPS-based social aggregation metrics using collar data Estimating GPS-based social aggregation metrics using collar data
Understanding social aggregation patterns in ungulate herds is essential for gaining behavioral insights, optimizing resource use, reducing human-wildlife conflict, and managing disease risk. As chronic wasting disease is the preeminent disease-related threat to cervid populations in North America, knowledge of contact between individuals and spatiotemporal patterns of aggregation...
Authors
William Michael Janousek, Gavin G. Cotterill, Olivia J. Lobo, Eric K. Cole, Sarah R. Dewey, Tabitha A. Graves
Mountain goat declines in a protected, interior, native population Mountain goat declines in a protected, interior, native population
A shifting climate poses threats to alpine-adapted species including mountain goats. We used long-term (12 years) citizen science monitoring data and Bayesian N-mixture modeling to estimate population trends and drivers of population metrics among mountain goats in Glacier National Park (GNP). Median goats per site (n = 37 sites) declined by 45% (95% credible interval [CRI] = 32%, 57%)...
Authors
Tabitha A. Graves, William Michael Janousek, Michael Yarnall, Jami Belt
Informing adaptive management to reduce ungulate aggregations: A case study involving winter feeding of elk Informing adaptive management to reduce ungulate aggregations: A case study involving winter feeding of elk
In the United States, wildlife managers are entrusted with preserving culturally and economically important ungulate populations in the face of the ongoing spread of chronic wasting disease (CWD). The U.S. Fish and Wildlife Service established an adaptive management plan to reduce the reliance of elk (Cervus canadensis) on supplemental winter feeding on the National Elk Refuge. The end...
Authors
William Michael Janousek, Eric K. Cole, Sarah R. Dewey, Tabitha A. Graves
Western and McKay's bumble bees occupancy trends and future projections Western and McKay's bumble bees occupancy trends and future projections
The Western and McKay's bumble bees, originally petitioned for listing as subspecies of the Western bumble bee (Bombus occidentalis) were previously among the most common western bumble bee species but have declined since the late 1990s (Graves et al. 2021). This report details an occupancy analysis utilizing pre-existing and newly collected bumble bee survey data to evaluate potential...
Authors
William Michael Janousek, Margaret R. Douglas, Imtiaz Rangwala, Jeffrey G. Everett, Douglas A. Keinath, Tabitha A. Graves
Population and spatial dynamics of desert bighorn sheep in Grand Canyon during an outbreak of respiratory pneumonia Population and spatial dynamics of desert bighorn sheep in Grand Canyon during an outbreak of respiratory pneumonia
Introduction: Terrestrial species in riverine ecosystems face unique constraints leading to diverging patterns of population structure, connectivity, and disease dynamics. Desert bighorn sheep (Ovis canadensis nelsoni) in Grand Canyon National Park, a large native population in the southwestern USA, offer a unique opportunity to evaluate population patterns and processes in a remote...
Authors
Clinton W. Epps, P. Brandon Holton, Ryan J. Monello, Rachel S. Crowhurst, Sarah Mccrimmon Gaulke, William Michael Janousek, Tyler G. Creech, Tabitha A. Graves
Recent and future declines of a historically widespread pollinator linked to climate, land cover, and pesticides Recent and future declines of a historically widespread pollinator linked to climate, land cover, and pesticides
The acute decline in global biodiversity includes not only the loss of rare species, but also the rapid collapse of common species across many different taxa. The loss of pollinating insects is of particular concern because of the ecological and economic values these species provide. The western bumble bee (Bombus occidentalis) was once common in western North America, but this species...
Authors
William Michael Janousek, Margaret R. Douglas, Syd Cannings, Marion Clement, Casey Delphia, Jeffrey G. Everett, Richard G. Hatfield, Douglas A. Keinath, Jonathan B Koch, Lindsie M. McCabe, John Michael Mola, Jane Ogilvie, Imtiaz Rangwala, Leif L Richardson, Ashley T. Rohde, James P. Strange, Lusha M. Tronstad, Tabitha A. Graves
Eyes on the herd: Quantifying ungulate density from satellite, unmanned aerial systems, and GPScollar data Eyes on the herd: Quantifying ungulate density from satellite, unmanned aerial systems, and GPScollar data
Novel approaches to quantifying density and distributions could help biologists adaptively manage wildlife populations, particularly if methods are accurate, consistent, cost-effective, rapid, and sensitive to change. Such approaches may also improve research on interactions between density and processes of interest, such as disease transmission across multiple populations. We assess how...
Authors
Tabitha A. Graves, Michael Yarnall, Aaron N. Johnston, Todd M. Preston, Geneva W. Chong, Eric K Cole, William Michael Janousek, Paul C. Cross
Human activities and weather drive contact rates of wintering elk Human activities and weather drive contact rates of wintering elk
Wildlife aggregation patterns can influence disease transmission. However, limited research evaluates the influence of anthropogenic and natural factors on aggregation. Many managers would like to reduce wildlife contact rates, driven by aggregation, to limit disease transmission. We develop a novel analytical framework to quantify how management activities such as supplemental feeding...
Authors
William Michael Janousek, Tabitha A. Graves, Ethan Berman, Geneva W. Chong, Eric K Cole, Sarah Dewey, Aaron N. Johnston, Paul C. Cross
Western bumble bee: Declines in United States and range-wide information gaps Western bumble bee: Declines in United States and range-wide information gaps
In recent decades, many bumble bee species have declined due to changes in habitat, climate, and pressures from pathogens, pesticides, and introduced species. The western bumble bee (Bombus occidentalis ), once common throughout western North America, is a species of concern and will be considered for listing by the U.S. Fish and Wildlife Service (USFWS) under the Endangered Species Act...
Authors
Tabitha A. Graves, William Michael Janousek, Sarah M. Gaulke, Amy Nicholas, Douglas Keinath, Christine M. Bell, Syd Cannings, Richard G. Hatfield, Jennifer M Heron, Jonathan B Koch, Helen L Loffland, Leif L Richardson, Ashley T. Rohde, Jessica Rykken, James P. Strange, Lusha Tronstead, Cory Sheffield
Non-USGS Publications**
Janousek, W.M., and Drietz, V.J., 2020, Testing Huston's dynamic equilibrium model along fire and forest productivity gradients using avian monitoring data: Diversity and Distributions, v: 26, n: 12, p: 1715-1726.
Janousek, W.M., Hahn, B.A., and, Dreitz, V.J., 2019, Disentangling monitoring programs: design, analysis, and application considerations: Ecological Applications, v: 29, n: 5, e01922.
Janousek, W.M., Hicke, J A., Meddens, A.J., and, Dreitz, V.J., 2019, The effects of mountain pine beetle outbreaks on avian communities in lodgepole pine forests across the greater Rocky Mountain region: Forest Ecology and Management, v: 444 p: 374-381.
Janousek, W.M., Marra, P.P., and Kilpatrick, A.M., 2014, Avian roosting behavior influences vector-host interactions for West Nile virus hosts: Parasites & Vectors, v: 7, n: 1, p: 1-11.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
oilmapr: Process and map time-stamped oil and gas well activity. oilmapr: Process and map time-stamped oil and gas well activity.
The oilmapr package is designed to help users efficiently map time-stamped oil and gas well activity data. This package was originally built to use with data retrieved from the Wyoming Oil & Gas Conservation Commission (WOGCC) online database. With this package, users can generate shapefiles of active well locations, create raster datasets representing well densities across user...
WildAgg: an R package to estimate and visualize wildlife aggregation data WildAgg: an R package to estimate and visualize wildlife aggregation data
This package is designed to estimate, summarize, and visualize wildlife aggregation metrics using location information like GPS collar data. The motivation for the development of this package began with two research efforts studying the aggregation and density of elk on the National Elk Refuge, Wyoming (Janousek et al.2021; and Graves et al. 2021). The primary goal of the WildAgg package...
Science and Products
USGS Chronic Wasting Disease Research at NOROCK
Chronic wasting disease (CWD) is a growing management issue in the U.S. and has been detected in 36 states as of April 2025, including many western states. There is no cure or vaccine for CWD, and the disease threatens economically important animals like elk and deer. NOROCK scientists have taken a multi-pronged approach to develop actionable science including 1) evaluating CWD management options...
USGS Chronic Wasting Disease Research at the National Elk Refuge
Over the past 20 years, chronic wasting disease (CWD) in Wyoming has been spreading slowly outward from the southeastern corner of the state into the Greater Yellowstone Area and Wyoming's elk feed grounds. CWD detections have been getting closer to the National Elk Refuge, which provides supplemental feeding to approximately 8,000 elk and 500 bison each winter. NOROCK scientists have been...
Developing Tools to Evaluate Chronic Wasting Disease Transmission Risk
Chronic Wasting Disease (CWD) infects and kills ungulates (deer, elk, moose), and has been spreading across North America for the past 20 years. Some ungulate populations have declined because of CWD and there are no viable vaccines or treatments for this disease. Therefore, tools that assist wildlife managers in preventing and mitigating CWD can be powerful assets in protecting our nation’s big...
Using Pollinator Environmental DNA to Assess the Ecological Resilience of America’s Grasslands
Scientists from six USGS science centers are collaborating with USDA, university, and Tribal partners, and Department of the Interior land managers, to assess the status of pollinator communities and the distribution of species of conservation concern using environmental DNA. These methods will be used to improve assessments of habitat quality and pollinator responses to restoration, including...
By
Species Management Research Program, Eastern Ecological Science Center, Forest and Rangeland Ecosystem Science Center, Great Lakes Science Center, Northern Prairie Wildlife Research Center, Northern Rocky Mountain Science Center, Upper Midwest Environmental Sciences Center, Pacific Northwest Environmental DNA Laboratory
Western Bumble Bee and Native Pollinator Research
The western bumble bee was historically one of the most common bumble bees across the western U.S. and Canada. However, our research and others found it has declined substantially across its range and the U.S. Fish and Wildlife Service is considering it for listing under the Endangered Species Act. Bureau of Land Management, National Park Service, and other land managers need information to inform...
Filter Total Items: 16
Mountain goat (Oreamnos americanus) abundance in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada, 2022 Mountain goat (Oreamnos americanus) abundance in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada, 2022
This data contains a raster layer of predicted mountain goat abundance in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada in 2022.
Predicted habitat suitability and associated covariate data used to explain changes in mule deer age ratios from 2001 to 2023, Wyoming, USA Predicted habitat suitability and associated covariate data used to explain changes in mule deer age ratios from 2001 to 2023, Wyoming, USA
This data release contains several products to support the publication of Janousek et al. 2026. Included in this release is data to model resource selection functions for mule deer in summer and winter across Wyoming, USA from 2001 to 2022, raster data of predicted mule deer habitat suitability in summer and winter from 2000 to 2023, raster data of predictions of the number of years of...
Estimates of Elk Aggregation Metrics Calculated Across Varying Sample Sizes from Two Herds in Western Wyoming, USA Estimates of Elk Aggregation Metrics Calculated Across Varying Sample Sizes from Two Herds in Western Wyoming, USA
This data is a compilation of elk aggregation metrics (inter-animal distance, proximity rate, and kernel density contour area) calculated using GPS collar data from elk belonging to the Jackson and West Green River herds in western Wyoming, USA. The data represents two seasonal time periods (high- and low-density) for animals from each herd. Time periods of inference vary by herd and...
Mountain goats (Oreamnos americanus) in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada, 2008-2023 Mountain goats (Oreamnos americanus) in Glacier National Park, Montana, USA, and Waterton Lakes National Park, Alberta, Canada, 2008-2023
Dataset includes a) counts of mountain goats for multiple surveys across 37 sites inside Glacier National Park 2008-2019, along with biotic and abiotic conditions used in analysis of trend including snow, precipitation, temperature, landcover and habituation; b) predicted numbers of goats using each survey area; and c) microsatellite genotypes for goat pellet samples collected 2019-2023...
High resolution fractional tree cover and change over time for Olympic, Mount Rainier, and Glacier National Parks High resolution fractional tree cover and change over time for Olympic, Mount Rainier, and Glacier National Parks
High resolution fractional tree cover and change over time for Olympic, Mount Rainier, and Glacier National Parks from the mid-1980s to the mid-2020s. Date of annual snapshots of tree cover and the temporal range of change over time in tree cover vary by location. See metadata files associated with individual parks for specific details.
Rocky Mountain bighorn sheep datasets from Dinosaur National Monument, Colorado, Utah, USA, 2006-2022 Rocky Mountain bighorn sheep datasets from Dinosaur National Monument, Colorado, Utah, USA, 2006-2022
Tabular and raster data containing spatial capture recapture, GPS telemetry, ground observations, and genetic records for male and female Rocky Mountain bighorn sheep (Ovis canadensis canadensis) in Dinosaur National Monument from 2006 to 2022. Includes associated tabular data files required for analysis of data with spatial capture models and resource selection models, and the raster...
Assessing adaptive management to reduce ungulate aggregations: A case study involving the supplemental feeding of elk. Assessing adaptive management to reduce ungulate aggregations: A case study involving the supplemental feeding of elk.
This data release contains summarized elk aggregation metrics generated from Global Positioning System (GPS) collar locations of elk on the National Elk Refuge in Jackson, Wyoming. Aggregation metrics include annual kernel density estimates of the area used by elk on the National Elk Refuge, daily measures of inter-elk distances, daily pairwise proximity, and daily mean proximity and...
Desert bighorn sheep (Ovis canadensis nelsoni) datasets from Grand Canyon National Park, 2010-2016 Desert bighorn sheep (Ovis canadensis nelsoni) datasets from Grand Canyon National Park, 2010-2016
Tabular and raster data containing spatial capture recapture records for male and female bighorn sheep (Ovis canadensis nelsoni) in Grand Canyon National Park and surrounding landscape collected from 2010 to 2018 and associated tabular data files required for analysis of data with spatial capture connectivity models and raster data describing the ouput from SCR models. Associated tables...
Downscaled western bumble bee predicted occupancy for 2020, western conterminous United States. Downscaled western bumble bee predicted occupancy for 2020, western conterminous United States.
This data represents occupancy predictions for western bumble bee in 2020 across the western conterminous United States. This product is a 30-meter resolution downscaled version of previously published occupancy layers for the western bumble bee. For more information on original publications, see the publication listed in the Larger Works Cited Section.
Occurrence data of the western bumble bee from 1998 to 2020 across the western United States Occurrence data of the western bumble bee from 1998 to 2020 across the western United States
These raw survey data and associated explanatory covariates were used to model western bumble bee occupancy across the western conterminous United States from 1998 to 2020. These data underlie the analyses found in the publication of “Recent and future declines of a historically widespread pollinator linked to climate, land cover, and pesticides” by Janousek et al. 2023 in the...
Bumblebee Surveys in Montana, North Dakota, South Dakota, and Nevada, USA (ver. 3.0, March 2025) Bumblebee Surveys in Montana, North Dakota, South Dakota, and Nevada, USA (ver. 3.0, March 2025)
Bumblebee community surveys used occupancy survey designs primarily across lands managed by the Bureau of Land Management (BLM) and Glacier National Park (GNP). They also include a few surveys in Nevada. These records represent timed surveys that were both successful and unsuccessful in detecting bumble bees.
Neonicotinoid nitroguanidine group insecticide application rates estimated across the western conterminous United States, 2008 to 2014 Neonicotinoid nitroguanidine group insecticide application rates estimated across the western conterminous United States, 2008 to 2014
These data represents annual estimates of neonicotinoid nitroguanidine group insecticide application rates across the western conterminous United States from 2008 to 2014. This product contains seven raster layers (appearing as separate bands in a multi-band raster). Each band represents one year of the data beginning in 2008. Estimates are generated by pairing crop specific application...
Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument
Translocations have been widely used to restore and conserve bighorn sheep (Ovis canadensis) populations in North America. Some translocations have been successful, but many populations remain small and genetically isolated. Population structure can influence the viability and long-term success of reintroductions. Social ungulates often function as interconnected subpopulations...
Authors
Sarah Louise Carroll, Elizabeth P Flesch, Salix Scoresby, Emily Spencer, Rachel S. Crowhurst, Clinton W. Epps, Nathan L. Galloway, William Michael Janousek, Tabitha A. Graves
The interplay of habitat quality and temperature shape demographic patterns of mule deer (Odocoileus hemionus) in North America The interplay of habitat quality and temperature shape demographic patterns of mule deer (Odocoileus hemionus) in North America
Mule deer (Odocoileus hemionus) are declining in abundance across their broad distribution in western North America. Identifying drivers of mule deer demography could inform habitat restoration. However, linking habitat quality to vital rates is challenging and often done indirectly using proxy metrics. We combine habitat selection with climate-related effects to identify synergistic...
Authors
William Michael Janousek, Aaron N. Johnston, Sarah Bullock, Sarah Dewey, L. Embere Hall, Teagan A. Hayes, Katey Huggler, Matthew J. Kauffman, Tayler N LaSharr, Blake Lowrey, Rhiannon P. Jakopak, Kevin Monteith, Tabitha A. Graves
Estimating GPS-based social aggregation metrics using collar data Estimating GPS-based social aggregation metrics using collar data
Understanding social aggregation patterns in ungulate herds is essential for gaining behavioral insights, optimizing resource use, reducing human-wildlife conflict, and managing disease risk. As chronic wasting disease is the preeminent disease-related threat to cervid populations in North America, knowledge of contact between individuals and spatiotemporal patterns of aggregation...
Authors
William Michael Janousek, Gavin G. Cotterill, Olivia J. Lobo, Eric K. Cole, Sarah R. Dewey, Tabitha A. Graves
Mountain goat declines in a protected, interior, native population Mountain goat declines in a protected, interior, native population
A shifting climate poses threats to alpine-adapted species including mountain goats. We used long-term (12 years) citizen science monitoring data and Bayesian N-mixture modeling to estimate population trends and drivers of population metrics among mountain goats in Glacier National Park (GNP). Median goats per site (n = 37 sites) declined by 45% (95% credible interval [CRI] = 32%, 57%)...
Authors
Tabitha A. Graves, William Michael Janousek, Michael Yarnall, Jami Belt
Informing adaptive management to reduce ungulate aggregations: A case study involving winter feeding of elk Informing adaptive management to reduce ungulate aggregations: A case study involving winter feeding of elk
In the United States, wildlife managers are entrusted with preserving culturally and economically important ungulate populations in the face of the ongoing spread of chronic wasting disease (CWD). The U.S. Fish and Wildlife Service established an adaptive management plan to reduce the reliance of elk (Cervus canadensis) on supplemental winter feeding on the National Elk Refuge. The end...
Authors
William Michael Janousek, Eric K. Cole, Sarah R. Dewey, Tabitha A. Graves
Western and McKay's bumble bees occupancy trends and future projections Western and McKay's bumble bees occupancy trends and future projections
The Western and McKay's bumble bees, originally petitioned for listing as subspecies of the Western bumble bee (Bombus occidentalis) were previously among the most common western bumble bee species but have declined since the late 1990s (Graves et al. 2021). This report details an occupancy analysis utilizing pre-existing and newly collected bumble bee survey data to evaluate potential...
Authors
William Michael Janousek, Margaret R. Douglas, Imtiaz Rangwala, Jeffrey G. Everett, Douglas A. Keinath, Tabitha A. Graves
Population and spatial dynamics of desert bighorn sheep in Grand Canyon during an outbreak of respiratory pneumonia Population and spatial dynamics of desert bighorn sheep in Grand Canyon during an outbreak of respiratory pneumonia
Introduction: Terrestrial species in riverine ecosystems face unique constraints leading to diverging patterns of population structure, connectivity, and disease dynamics. Desert bighorn sheep (Ovis canadensis nelsoni) in Grand Canyon National Park, a large native population in the southwestern USA, offer a unique opportunity to evaluate population patterns and processes in a remote...
Authors
Clinton W. Epps, P. Brandon Holton, Ryan J. Monello, Rachel S. Crowhurst, Sarah Mccrimmon Gaulke, William Michael Janousek, Tyler G. Creech, Tabitha A. Graves
Recent and future declines of a historically widespread pollinator linked to climate, land cover, and pesticides Recent and future declines of a historically widespread pollinator linked to climate, land cover, and pesticides
The acute decline in global biodiversity includes not only the loss of rare species, but also the rapid collapse of common species across many different taxa. The loss of pollinating insects is of particular concern because of the ecological and economic values these species provide. The western bumble bee (Bombus occidentalis) was once common in western North America, but this species...
Authors
William Michael Janousek, Margaret R. Douglas, Syd Cannings, Marion Clement, Casey Delphia, Jeffrey G. Everett, Richard G. Hatfield, Douglas A. Keinath, Jonathan B Koch, Lindsie M. McCabe, John Michael Mola, Jane Ogilvie, Imtiaz Rangwala, Leif L Richardson, Ashley T. Rohde, James P. Strange, Lusha M. Tronstad, Tabitha A. Graves
Eyes on the herd: Quantifying ungulate density from satellite, unmanned aerial systems, and GPScollar data Eyes on the herd: Quantifying ungulate density from satellite, unmanned aerial systems, and GPScollar data
Novel approaches to quantifying density and distributions could help biologists adaptively manage wildlife populations, particularly if methods are accurate, consistent, cost-effective, rapid, and sensitive to change. Such approaches may also improve research on interactions between density and processes of interest, such as disease transmission across multiple populations. We assess how...
Authors
Tabitha A. Graves, Michael Yarnall, Aaron N. Johnston, Todd M. Preston, Geneva W. Chong, Eric K Cole, William Michael Janousek, Paul C. Cross
Human activities and weather drive contact rates of wintering elk Human activities and weather drive contact rates of wintering elk
Wildlife aggregation patterns can influence disease transmission. However, limited research evaluates the influence of anthropogenic and natural factors on aggregation. Many managers would like to reduce wildlife contact rates, driven by aggregation, to limit disease transmission. We develop a novel analytical framework to quantify how management activities such as supplemental feeding...
Authors
William Michael Janousek, Tabitha A. Graves, Ethan Berman, Geneva W. Chong, Eric K Cole, Sarah Dewey, Aaron N. Johnston, Paul C. Cross
Western bumble bee: Declines in United States and range-wide information gaps Western bumble bee: Declines in United States and range-wide information gaps
In recent decades, many bumble bee species have declined due to changes in habitat, climate, and pressures from pathogens, pesticides, and introduced species. The western bumble bee (Bombus occidentalis ), once common throughout western North America, is a species of concern and will be considered for listing by the U.S. Fish and Wildlife Service (USFWS) under the Endangered Species Act...
Authors
Tabitha A. Graves, William Michael Janousek, Sarah M. Gaulke, Amy Nicholas, Douglas Keinath, Christine M. Bell, Syd Cannings, Richard G. Hatfield, Jennifer M Heron, Jonathan B Koch, Helen L Loffland, Leif L Richardson, Ashley T. Rohde, Jessica Rykken, James P. Strange, Lusha Tronstead, Cory Sheffield
Non-USGS Publications**
Janousek, W.M., and Drietz, V.J., 2020, Testing Huston's dynamic equilibrium model along fire and forest productivity gradients using avian monitoring data: Diversity and Distributions, v: 26, n: 12, p: 1715-1726.
Janousek, W.M., Hahn, B.A., and, Dreitz, V.J., 2019, Disentangling monitoring programs: design, analysis, and application considerations: Ecological Applications, v: 29, n: 5, e01922.
Janousek, W.M., Hicke, J A., Meddens, A.J., and, Dreitz, V.J., 2019, The effects of mountain pine beetle outbreaks on avian communities in lodgepole pine forests across the greater Rocky Mountain region: Forest Ecology and Management, v: 444 p: 374-381.
Janousek, W.M., Marra, P.P., and Kilpatrick, A.M., 2014, Avian roosting behavior influences vector-host interactions for West Nile virus hosts: Parasites & Vectors, v: 7, n: 1, p: 1-11.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
oilmapr: Process and map time-stamped oil and gas well activity. oilmapr: Process and map time-stamped oil and gas well activity.
The oilmapr package is designed to help users efficiently map time-stamped oil and gas well activity data. This package was originally built to use with data retrieved from the Wyoming Oil & Gas Conservation Commission (WOGCC) online database. With this package, users can generate shapefiles of active well locations, create raster datasets representing well densities across user...
WildAgg: an R package to estimate and visualize wildlife aggregation data WildAgg: an R package to estimate and visualize wildlife aggregation data
This package is designed to estimate, summarize, and visualize wildlife aggregation metrics using location information like GPS collar data. The motivation for the development of this package began with two research efforts studying the aggregation and density of elk on the National Elk Refuge, Wyoming (Janousek et al.2021; and Graves et al. 2021). The primary goal of the WildAgg package...