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Filters: Tags: ungulates (X) > Date Range: {"choice":"year"} (X)

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This layer represents 5-year relative counts of wildlife carcasses collected by Montana Department of Transportation (MDT) maintenance personnel or U.S. Fish & Wildlife Service Grizzly Bear Recovery Team personnel on or adjacent to on-system (major) routes from 2008 to 2012. To obtain relative counts, the 5-year total counts per mile, which included all wildlife species observed, were divided by the maximum observed calue (98) to give a relative 0-1 risk score. Total counts, which include all wildlife species observed, along with carnivore counts, which include only black bears, grizzly bears, mountain lions, and wolves, are provided. Counts were derived by identifying the nearest mile marker to each carcass point...
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These case study sites are detailed in the report accompanying this data layer. The case studies are intended to serve as examples of how some of the opportunities for diverse stakeholders to engage in the process of mitigating road impacts on wildlife that are described in the report might be applied on the ground, as well as other considerations that come into play in selecting sites for possible mitigation and designing mitigation solutions for those sites. Through these case studies, we illustrate potential opportunities for mitigation and partner engagement for each of the four alternative priority sets identified in this study.Wildlife carcasses recorded by Montana Department of Transportation, Idaho Department...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: AADT, AADT, Carnivores, Carnivores, Connectivity, All tags...
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Many ungulate populations in the Rocky Mountains are predicted to respond to declining snow levels and increased drought, though in ways that remain uncertain. This project investigated how climate change may affect the abundance of Rocky Mountain ungulates, their migration patterns, the degree to which they transmit diseases to livestock, and their herbivory impact on aspen. To complete this work we brought together a team of USGS and University scientists with experience, data, and strong agency collaboration that enabled us to quantify climate impacts and deliver products useful for wildlife managers.
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Wildlife carcasses recorded by Montana Department of Transportation, Idaho Department of Fish & Game, and U.S. Fish & Wildlife Service were aggregated to the nearest mile marker for major roads of the U.S. Northern Rockies. WGA connectivity flowlines were intersected with the road network and attributed to the nearest mile marker, along with their connectivity ranking, which indicates their expected relative importance to maintaining westwide connectivity. Values for potential risk factors, including average annual daily traffic (AADT), functional class, number of lanes, road surface width, landscape condition of surrounding habitat, ruggedness of surrounding landscape, and topographic position relative to surrounding...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: AADT, AADT, Carnivores, Carnivores, Connectivity, All tags...
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Wildlife carcasses recorded by Montana Department of Transportation, Idaho Department of Fish & Game, and U.S. Fish & Wildlife Service were aggregated to the nearest mile marker for major roads of the U.S. Northern Rockies. WGA connectivity flowlines were intersected with the road network and attributed to the nearest mile marker, along with their connectivity ranking, which indicates their expected relative importance to maintaining westwide connectivity. Values for potential risk factors, including average annual daily traffic (AADT), functional class, number of lanes, road surface width, landscape condition of surrounding habitat, ruggedness of surrounding landscape, and topographic position relative to surrounding...
Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: AADT, AADT, Carnivores, Carnivores, Connectivity, All tags...
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Each year, plants and animals undergo certain life cycle events, such as breeding or flowering. These phenological events are linked to weather and climate, and as temperature and precipitation patterns have changed, some spring events are occurring earlier. These changes in plant phenology can have cascading effects on wildlife such as elk, moose, and mule deer, which depend on plants for food. It’s thought that the quality of forage available in the spring could play a critical role for these big game species, which need to replenish energy depleted during the winter, in order to survive and successfully reproduce. Climate change will alter plant phenology, which in turn is likely to effect when, where, and for...
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In the southwestern U.S., climate change is expected to increase the frequency of extreme droughts and cause an overall decrease in precipitation and increase in temperatures. These changes could impact a wide range of species in the region, even those adapted to living in arid environments. It’s possible that some species may be able to adapt to changing conditions by migrating to new locations or altering their behavior, while others may have genetic traits that activate physiological changes to cope with heat and water stress. This project focused on desert bighorn sheep and explored potential adaptations that may help them persist despite varying climates throughout their range. Previous research has shown...
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This layer represents 5-year relative counts of wildlife carcasses collected by Idaho Transportation Department (ITD) personnel (2008-2012) or reported by the general public (2012) on or adjacent to state highway system (major) routes. To obtain relative counts, the 5-year total counts per mile, which included all wildlife species observed, were divided by the maximum observed calue (98) to give a relative 0-1 risk score. Total counts, which include all wildlife species observed, along with carnivore counts, which include only black bears, grizzly bears, mountain lions, and wolves, are provided. Counts were derived by identifying the nearest mile marker to each carcass point location, then counting the frequency...


    map background search result map search result map Quantifying the Influence of Climate Change on Rocky Mountain Ungulates Road-Killed Wildlife Carcass Frequency, Connectivity Value, and Potential Risk Factors by Mile of U.S. Northern Rockies Major Roads (2008-2012) Road-Killed Wildlife Carcass Frequency by Mile of Montana On-System Routes in the U.S. Northern Rockies (2008-2012) Road-Killed Wildlife Carcass Frequency by Mile of Idaho State Highway System Routes in the U.S. Northern Rockies (2008-2012) Case Study Sites for Prioritizing Mitigation of Road Impacts on Western Governors' Association Wildlife Corridors Linking Mule Deer Migration to Spring Green-Up in Wyoming Evaluating Adaptations of Desert Bighorn Sheep to Climate Change in the Southwestern U.S. Road-Killed Wildlife Carcass Frequency, Connectivity Value, and Potential Risk Factors by Mile Segment of U.S. Northern Rockies Major Roads (2008-2012) Quantifying the Influence of Climate Change on Rocky Mountain Ungulates Linking Mule Deer Migration to Spring Green-Up in Wyoming Road-Killed Wildlife Carcass Frequency, Connectivity Value, and Potential Risk Factors by Mile Segment of U.S. Northern Rockies Major Roads (2008-2012) Road-Killed Wildlife Carcass Frequency, Connectivity Value, and Potential Risk Factors by Mile of U.S. Northern Rockies Major Roads (2008-2012) Road-Killed Wildlife Carcass Frequency by Mile of Montana On-System Routes in the U.S. Northern Rockies (2008-2012) Road-Killed Wildlife Carcass Frequency by Mile of Idaho State Highway System Routes in the U.S. Northern Rockies (2008-2012) Case Study Sites for Prioritizing Mitigation of Road Impacts on Western Governors' Association Wildlife Corridors Evaluating Adaptations of Desert Bighorn Sheep to Climate Change in the Southwestern U.S.