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Location Folder Show Tree ROOT _ScienceBase Catalog 3DSC Alaska Science Center (ASC) Alkalic Igneous Centers of the Great Plains and Rocky Mountains: Data in Support of Critical Mineral Resource Studies AMMonitor: Remote wildlife monitoring for adaptive management Amphibian Research and Monitoring Initiative More... Filters Date Range Past year (4) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Citation (2) Project (2) Budget (1) Expando (1) Shapefile (1) Types Map Service (4) OGC WFS Layer (4) OGC WMS Layer (4) Citation (3) OGC WMS Service (3) Downloadable (1) Shapefile (1) Contacts Karen M Thorne Cory T Overton Western Ecological Research Center Ecosystems Dustin A Wood More... Categories Data (4) Project (2) Publication (2) Tag Types Keyword (1) Theme (4) CMS Topics (2) Place (4) SWCSC Geographic Area (1) CMS Themes (2) Science Themes (3) More... Tag Schemes https://www.sciencebase.gov/vocab/category/NCCWSC/Keyword (1) None (3) USGS Thesaurus (2) https://www.sciencebase.gov/vocab/category/SWCSC/GeographicArea (1) https://www.sciencebase.gov/vocab/category/WRET/CMS_Topics/CASC_CMS_Topics (2) https://www.sciencebase.gov/vocab/category/NCCWSC/ScienceThemes (3) https://www.sciencebase.gov/vocab/category/WRET/CMS_Themes/CASC_CMS_Themes (2) More... View Results as: JSON ATOM CSV Browse Folder

Historical methyl mercury in San Francisco Bay San Francisco Bay, California is considered a mercury-impaired watershed. Elevated concentrations of mercury are found in water and sediment as well as fish and estuarine birds. Sources of mercury to the watershed since 1845 include sediment-associated mercury from mercury mining, mercury losses from gold amalgamation activities in mines of the Sierra Nevada, aerial deposition of mercury from global and regional emissions to air, and the direct discharge of mercury to Bay waters associated with the urbanization and industrialization of the estuary. We assessed historical trends in mercury bioaccumulation by measuring mercury concentrations in feathers of the endangered California Ridgway’s rail (formerly California... Categories: Data; Tags: California Ridgway's Rail, Feathers, Ice Cores, Lake Tahoe, Mercury, All tags... San Francisco Bay, Sediment, Structural Equation Model, USGS Science Data Catalog (SDC), Wyoming, Fewer tags Chapter 12: Bird communities: effects of fragmentation, disturbance, and sea level rise on population viability [Excerpt from Introduction] "The San Francisco Bay Estuary supports a large and diverse bird community. More than 50% of most Pacific flyway diving duck populations are found in the Estuary during the winter months (Trost 2002; U.S. Fish and Wildlife Service 2002). San Francisco Bay has been designated as a site of international importance for shorebirds (Western Hemisphere Shorebird Reserve Network), supporting millions of individuals (Morrison et al. 2001; Takekawa et al. 2001; Warnock et al. 2002), including species that use tidal marsh habitats. In total, the Bay’s tidal marshes support at least 113 bird species that represent 31 families (Takekawa et al., in press)..." Categories: Publication; Types: Citation; Tags: Habitat Fragmentation, Human Disturbance, National CASC, Population Viability, Restoration Implications, All tags... Science Tools For Managers, Sea Level Rise, Sea-Level Rise and Coasts, State of the Science, Synthesis and Future Directions, Tidal Marsh Bird Community, Water, Coasts and Ice, Wetlands, Fewer tags 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 Impounded and tidal wetland plant diversity and composition across spatial scales, San Francisco Bay-Delta, California, USA (2016-2018) These datasets provide information on plant alpha, beta, and gamma diversity, and plant species abundance at several spatial scales for tidal wetlands along a salinity gradient in the San Francisco Bay-Delta and an impounded brackish wetland complex in Suisun Marsh, California. Files include diversity metrics calculated at the patch, site, and region scales, average percent cover of wetland dominant plants at the patch scale, and average percent cover of all wetland plants at the site scale. These data support the following paper: Jones, S.F., Janousek, C.N., Casazza, M.L., Takekawa, J.Y. and Thorne, K.M., 2021. Seasonal impoundment alters patterns of tidal wetland plant diversity across spatial scales. Ecosphere,... Categories: Data; Tags: Botany, California, San Francisco Bay-Delta Estuary, USGS Science Data Catalog (SDC), biodiversity, All tags... biota, coastal ecosystems, community composition, ecology, wetland impoundment, Fewer tags Fate of Endangered Species in San Francisco Bay Tidal Marshes with Sea-Level Rise The San Francisco Bay estuary contains the largest remaining expanse of tidal salt marshes in the western U.S. These marshes are home to a variety of federal and state protected species, such as the California clapper rail, California black rail, and the salt marsh harvest mouse. The estuary is also located on the Pacific Flyway, and is an important site for migrating and wintering birds. As climate conditions change, these salt marshes face a number of threats, including accelerated rates of sea-level rise, shifting precipitation, erosion, and more frequent and intense storms. Seas in the San Francisco Bay estuary have been rising 2.2 centimeters per decade, and could rise by as much as 1.24 meters by 2100, according... Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2008, CASC, Completed, National CASC, National CASC, All tags... Projects by Region, Science Tools for Managers, Science Tools for Managers, Sea-Level Rise and Coasts, Sea-Level Rise and Coasts, Social Science, Social Science, State of the Science, Water, Coasts and Ice, Water, Coasts and Ice, Wetlands, Wetlands, Fewer tags Timing of Occurrence of Waterfowl in U.S. Counties and Canadian Counties, Boroughs, Census Districts, and Other Populated Area Designations with Modeled Exposure Status to Highly Pathogenic Avian Influenza Virus in 2021-2022 This data provides county level occurrence information for all individuals used in modelling potential exposure and spread of highly pathogenic avian influenza (HPAIv) from the 2021-2022 North American outbreak. The data set contains individual identifiers and taxa information, an indicator of exposure, exposure status (Susceptible, Exposed by HPAIv detection in the county, or Exposed by secondary contact with an exposed bird), and date of first occurrence of each individual bird and that bird's exposure status within each visited county. Herein, county refers to any county, parish, borough, census area, or geographic region identified in the associated geospatial data US_CAN_AI.shp (ESRI shapefile format). Occurrence... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Canada, Ecology, Remote Sensing, USGS Science Data Catalog (SDC), United States, All tags... Wildlife Disease, avian influenza, biogeography, biota, birds, disease vectors, economy, geoscientificInformation, location, maps and atlases, migratory species, Fewer tags Effects of Sea-Level Rise and Extreme Storms on California Coastal Habitats: Part 1 In California, the near-shore area where the ocean meets the land is a highly productive yet sensitive region that supports a wealth of wildlife, including several native bird species. These saltmarshes, mudflats, and shallow bays are not only critical for wildlife, but they also provide economic and recreational benefits to local communities. Today, sea-level rise, more frequent and stronger storms, saltwater intrusion, and warming water temperatures are among the threats that are altering these important habitats. To support future planning and conservation of California’s near-shore habitats, researchers examined current weather patterns, elevations, tides, and sediments at these sites to see how they affect... Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, Bolinas Lagoon, CA, CASC, California, All tags... Coastal, Coastal Habitats, Completed, Drought, Fire and Extreme Weather, Drought, Fire and Extreme Weather, Extreme Weather, Extreme Weather, Federal, Humboldt Bay, Morro Bay, Newport Bay, Projects by Region, Pt. Mugu, SF Bay/Delta, San Pablo Bay, Sea-Level Rise and Coasts, Sea-Level Rise and Coasts, Southwest, Southwest CASC, Tijuana River, Water, Coasts and Ice, Water, Coasts and Ice, animals, assessment, birds, climate change, coastal, conservation, dem, downscale, dynamical, gcm, geomorphology, gis, hydrology, intertidal, management, marsh, model, multiple, nearshore, plants, sea level rise, sediment, sf bay, shoals, slr, storm, tidal, vegetation, vulnerability, wrf, Fewer tags Rising Tides: Assessing Habitat Vulnerability for an Endangered Salt Marsh-Dependent Species with Sea-Level Rise Abstract (from SpringerLink): Salt marsh-dependent species are vulnerable to impacts of sea-level rise (SLR). Site-specific differences in ecogeomorphic processes result in different SLR vulnerabilities. SLR impacts to Ridgway’s rail (Rallus obsoletus) of Southern California (SC) and San Francisco Bay (SF), U.S.A. could foreshadow SLR effects on other coastal endemic species. Salt marsh vulnerabilities to SLR were forecasted across 14 study sites using the Wetland Accretion Rate Model of Ecosystem Resilience, which accounts for changes in above and belowground marsh processes. Changes in suitable habitat for rail were projected with MaxEnt. Under a high (166 cm/100 yr) SLR scenario, current extent of suitable habitat... Categories: Publication; Types: Citation