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A Century of Landscape Disturbance and Urbanization of the San Francisco Bay Region affects the Present-day Genetic Diversity of the California Ridgway’s Rail (Rallus obsoletus obsoletus) Fragmentation and loss of natural habitat have important consequences for wild populations and can negatively affect long-term viability and resilience to environmental change. Salt marsh obligate species, such as those that occupy the San Francisco Bay Estuary in western North America, occupy already impaired habitats as result of human development and modifications and are highly susceptible to increased habitat loss and fragmentation due to global climate change. We examined the genetic variation of the California Ridgway’s rail ( Rallus obsoletus obsoletus), a state and federally endangered species that occurs within the fragmented salt marsh of the San Francisco Bay Estuary. We genotyped 107 rails across 11... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Clapper Rail, Fragmentation, Microsatellites, Population declines, Ridgway’s rail, All tags... San Francisco Bay, USGS Science Data Catalog (SDC), Fewer tags Population fragmentation and inter-ecosystem movements of grizzly bears in western Canada and the northern United States. Conclusions: Grizzly bear population fragmentation corresponded to the presence of settled mountain valleys and major highways. In these disturbed areas, the inter-area movements of female bears was affected more than for male bears. Without female connectivity, small subpopulations of grizzly bears are not viable over the long term. Thresholds/Learnings: Females grizzlies reduced their movement rates drastically when settlement increased to >20% of a given area. In highly settled areas (>50% settlement), both sexes demonstrated similar reductions in movement. Synopsis: Researchers studied the current state and potential causes of population fragmentation in grizzly bears over western Canada, the Greater Yellowstone... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alberta, British Columbia, Canadian Rockies, Chilcotin Ranges and Fraser Plateau, Clear Hills and Western Alberta Upland, All tags... Coastal Western Hemlock, Columbia Mountains/Northern Rockies, Crown of the Continent/Greater Yellowstone Ecoregion, DNA, Demographic fragmentation, Land use configuration, Landscape fragmentation, Mackenzie and Selwyn Mountains, Middle Rockies, Montana, Peel River and Nahanni Plateaus, Sitka Spruce Forests, Skeena-Omineca-Central Canadian Rocky Mountains, Ursus arctos, Watson Highlands, Wyoming, Yukon-Stikine Highlands/Boreal Mountains and Plateaus, climate change, female connectivity, gene flow, grizzly bears, inter-area movement, meso-regional, microsatellites, population assignment,population fragmentation, population fragmentation, radio telemetry, species at risk, terrestrial mammals, Fewer tags