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This collection contains unpublished hand drawn geologic maps, field maps, traverse maps, sample location maps, and cross sections of areas investigated in eastern U.S.
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Queen Maud Land Map. Shows boundary of floating shelf ice and shoreline in 1952.
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rbison is an R package or wrapper for interacting with the USGS BISON search API (https://bison.usgs.gov/#opensearch). rbison allows users to pull species occurrence data from datasets available from the USGS BISON application, inspect species occurance summaries, and then map species occurance within the US, within the contiguous 48 states, and/or at county or state level. The U.S. Geological Survey's BISON (Biodiversity Information Serving Our Nation - https://bison.usgs.gov) application is a product of the USGS Science, Analytics and Synthesis Program. BISON is an information system that allows users to access, explore, and download species occurrence data (predominantly specimen-based e.g. from digitized museum...
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This raster depicts the percentage of lithological ferric oxide (Fe2O3) content in surface or near surface geology. We derived these rasters by calculating the average percent Fe2O3 content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet (from...
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This raster depicts the percentage of lithological potassium oxide (K2O) content in surface or near surface geology. We derived these rasters by calculating the average percent K2O content for each map unit in combined surficial-bedrock geologic maps. We used state geologic maps (Preliminary Integrated Geologic Map Databases for the United States, Open File Reports 2004-1355, 2005-1305, 2005-1323, 2005-1324, 2005-1325, 2005-1351, and 2006-1272), which depict surficial geology instead of bedrock when the surficial layers are sufficiently deep. For the state maps that do not incorporate surficial geology (i.e., midwestern states), we overlaid surficial geologic map units with thicknesses greater than 100 feet (from...
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The Southeastern United States spans a broad range of physiographic settings and maintains exceptionally high levels of faunal diversity. Unfortunately, many of these ecosystems are increasingly under threat due to rapid human development, and management agencies are increasingly aware of the potential effects that climate change will have on these ecosystems. Natural resource managers and conservation planners can be effective at preserving ecosystems in the face of these stressors only if they can adapt current conservation efforts to increase the overall resilience of the system. Climate change, in particular, challenges many of the basic assumptions used by conservation planners and managers. Previous conservation...
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USGS researchers assessed how climate change can affect land cover and flow in river systems, examining a variety of resolutions for detecting and projecting the conditions of aquatic habitats and species.
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The USGS and South Atlantic LCC worked with stakeholders and managers across the Southeast to identify and assess landscape-level strategies for conserving multiple species. These strategies incorporated predictions from downscaled climate models, sea level rise, and changes to aquatic and terrestrial habitats.


map background search result map search result map rbison R Package SERAP:  The Effects of Climate Change on Aquatic Species and Habitat in the Southeast SERAP: Decision Support for Stakeholders and Managers Southeast Regional Assessment Project (SERAP): Assessing Global Change Impacts on Natural and Human Systems in the Southeast Geochemical Characteristics of the Conterminous United States: % K2O Geochemical Characteristics of the Conterminous United States: % Fe2O3 Doug Rankin Legacy Geologic Maps SERAP:  The Effects of Climate Change on Aquatic Species and Habitat in the Southeast SERAP: Decision Support for Stakeholders and Managers Doug Rankin Legacy Geologic Maps Southeast Regional Assessment Project (SERAP): Assessing Global Change Impacts on Natural and Human Systems in the Southeast Geochemical Characteristics of the Conterminous United States: % K2O Geochemical Characteristics of the Conterminous United States: % Fe2O3 rbison R Package