Detrital zircon U-Pb data for Upper Triassic sandstones of the Auld Lang Syne basin, northwest Nevada, USA

This data release includes raw detrital zircon U-Pb data for isolated sandstones in Upper Triassic deposits of the Auld Lang Syne basin of northwest Nevada, USA. Detrital zircon U-Pb data for 11 sandstone samples (3269 zircon U-Pb dates) were acquired via LA-ICP-MS at the University of Arizona LaserChron Center for 11 sandstone samples. Primary insights from the data are twofold: 1) The data provide information about sediment provenance and indicate that sediment of the Auld Lang Syne basin was primarily derived from near the ancestral Ouachita orogen of Texas and Oklahoma. Sediment was transported to the Auld Lang Syne basin by a Late Triassic transcontinental river system, recorded today by the Upper Triassic...

Categories: Data; Tags: Great Basin, Nevada, North America, Sedimentology, Stratigraphy, All tags... USGS Science Data Catalog (SDC), geochronology, geology, sedimentology, stratigraphy, zircon, Fewer tags

Bivalvia Subset of Ocean Biogeographic Information System (OBIS) - USA Dataset Collection for NFHP Thematic Viewer 20141202

Species occurrence records of the taxonomic class of Bivalvia in oceans within 1000 kilometers of the United States shoreline. This is a subset of the OBIS-USA dataset where Bivalvia records were queried on December 2, 2014. After initial queries, the remaining data were further queried to retain only samples within 1000 kilometers of the U.S. shoreline. Spatial queries were then used to remove samples overlaying land masses. Data are provided in a geodatabase format, as well as a comma seperated values format. OBIS-USA provides aggregated, interoperable biogeographic data collected primarily from U.S. waters and oceanic regions--the Arctic, the Atlantic and Pacific oceans, the Caribbean Sea, Gulf of Mexico and...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Abundance (organisms), Aquatic animals, Aquatic environments, Aquatic habitats, Arctic Ocean, All tags... Atlantic Ocean, Biocomplexity, Biodiversity, Biological Data, Bivalves, Caribbean Sea, Fishery management, Gulf of Maine, Gulf of Mexico, Marine Invertbrates, Marine ecosystems, Marine mollusks, North America, OBIS, Ocean Biogeographic Information System, Pacific Ocean, Puget Sound, South Atlantic Bight, Spatial Data, United States, benthic habitat, biogeography, coastal habitat, reef habitat, Fewer tags

Projected Impacts of Future Climate on Bird Conservation in Arid and Semi-Arid Regions

Tens of millions of migratory birds are dependent on wetland and riparian stopovers in arid and semiarid regions of North America. Global climate change would superimpose even greater stress on these ecosystems as indicated by climate change model predictions of higher temperatures and less precipitation in the southwestern United States. In partnership with the University of Arizona, the Nebraska Cooperative Research Unit, and the NASA Goddard Space Flight Center, USGS scientists have investigated (1) how climate change may alter the spacing and quality of critical wetland stopover habitats; (2) the sensitivities of migrating songbirds to loss of riparian forests due to climate change and water-use patterns; (3)...

Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2008, Birds, Birds, CASC, Canada, All tags... Completed, Ducks Unlimited's International Conservation Plan, Latin America, National CASC, National CASC, North America, Projects by Region, United States, Water, Coasts and Ice, Water, Coasts and Ice, Wetlands, Wetlands, Wildlife and Plants, Wildlife and Plants, Fewer tags