Skip to main content
USGS - science for a changing world
Advanced Search

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

300 results (18ms)   

Filters
Date Types (for Date Range)
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
Maintaining the native prairie lands of the Northern Great Plains (NGP), which provide an important habitat for declining grassland species, requires anticipating the effects of increasing atmospheric carbon dioxide (CO2) concentrations and climate change on the region’s vegetation. Specifically, climate change threatens NGP grasslands by increasing the potential encroachment of native woody species into areas where they were previously only present in minor numbers. This project used a dynamic vegetation model to simulate vegetation type (grassland, shrubland, woodland, and forest) for the NGP for a range of projected future climates and relevant management scenarios. Comparing results of these simulations illustrates...
thumbnail
Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected...
Categories: Data; Tags: Atlantic Ocean, CMGP, Cape Cod, Cape Cod Bay, Coastal and Marine Geology Program, All tags...
thumbnail
U.S. Cities represents locations for cities within United States with populations of 10,000 or greater (based on Census 2000 figures), all state capitals, and the national capital.
thumbnail
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. These general purpose regions are critical for structuring and implementing ecosystem management strategies across federal agencies, state agencies, and nongovernment organizations that are responsible for different types of resources within the same geographical areas. The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of patterns of biotic and abiotic phenomena, including...
thumbnail
The Monitoring Trends in Burn Severity (MTBS) project assesses the frequency, extent, and magnitude (size and severity) of all large wildland fires (includes wildfire, wildland fire use, and prescribed fire) in the conterminous United States (CONUS), Alaska, Hawaii, and Puerto Rico for the period of 1984 through 2010. All fires reported as greater than 1,000 acres in the western U.S. and greater than 500 acres in the eastern U.S. are mapped across all ownerships. MTBS produces a series of geospatial and tabular data for analysis at a range of spatial, temporal, and thematic scales and are intended to meet a variety of information needs that require consistent data about fire effects through space and time. This...
thumbnail
U.S. National Atlas Cities represents cities and towns in the United States, Puerto Rico, and U.S. Virgin Islands.
thumbnail
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. These general purpose regions are critical for structuring and implementing ecosystem management strategies across federal agencies, state agencies, and nongovernment organizations that are responsible for different types of resources within the same geographical areas. The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of patterns of biotic and abiotic phenomena, including...
thumbnail
U.S. National Atlas Cities represents cities and towns in the United States.This dataset was used in the Northern Great Basin Rapid Ecoregional Assessment by BLM. No changes were made to the data but the dataset reduced to only included certain cities/towns within the ecoregion.
thumbnail
This report presents updated information about subsistence uses of fish, wildlife, and plant resources in 5 communities of southcentral Alaska - Igiugig, Kokhanok, Koliganek, Levelock, and New Stuyahok. The Division of Subsistence of the Alaska Department of Fish and Game conducted the study in collaboration with Stephen R. Braund & Associates. Phase I of this study took place in the communities of Iliamna, Newhalen, Nondalton, Pedro Bay, and Port Alsworth in 2005, to document subsistence uses and harvests and demographic and other economic data for the study year of 2004 (Fall et al. 2006). This report documents findings from phase II which expanded the study to 5 additional communities within the watersheds that...
thumbnail
Population range for each city/town. pop_5: 100,001 -1,000,000 U.S. Populated Place Points represents populated places that include census designated places, consolidated cities, and incorporated places within United States identified by the U.S. Census Bureau.
thumbnail
This theme contains raster data that depicts Hydric Soils (restrictive definition) in the Central Basin and Range (CBR) Rapid Ecoregional Assessment (REA).
thumbnail
This theme contains raster data that depicts and ranks soils with respect to water erosion in the Central Basin and Range (CBR) Rapid Ecoregional Assessment (REA).
thumbnail
These are the boundaries of current Land Use Plans. Represents the spatial extent and boundaries for existing BLM Land Use Planning Area (LUPA) polygons. Land Use Planning Areas are geographic areas within which the BLM will make decisions during a land use planning effort. Land Use Planning Area Boundaries shift from an "in-progress" status and become Existing Land Use Planning Areas when the Land Use Plan has been approvided and a Record of Decision Date has been established. At this point, these LUPAs are officially "existing".
thumbnail
This theme contains raster data that depicts the covertype Great Basin Foothill and Lower Montane Riparian Woodland and Shrubland / Stream for the Central Basin and Range (CBR) Rapid Ecoregional Assessment (REA).
thumbnail
The Yukon North Slope is an arctic “hot spot” of climate change-induced effects with profound significance for the Inuvialuit and the larger region. In 1984, the Inuvialuit entered into a land claim agreement – the Inuvialuit Final Agreement (IFA) – with the governments of Canada, Yukon and Northwest Territories. A co-management body formed to make a plan, which was developed in 2003 but never ratified and is now considered out-of-date. Round River Conservation Studies is assisting WMAC(NS) in the collection, development and synthesis of spatial data, models and analyses of cultural and ecological values of the YNS.The project is a collaboration among the NWB LCC, Round River Conservation Studies, and the Arctic...
thumbnail
The accretion history of fringing salt marshes located on the south shore of Cape Cod is reconstructed from sediment cores collected in low and high marsh vegetation zones. These marshes are micro-tidal, with a mean tidal range of 0.442 m. Their location within protected embayments and the absence of large rivers results in minimal sediment supply and a dominance of organic matter contributions to sediment peat. Age models based on 210-lead and 137-cesium are constructed to evaluate how vertical accretion and carbon burial rates have changed over the past century. The continuous rate of supply age model was used to age date 11 cores (10 low marsh and 1 high marsh) across four salt marshes. Both vertical accretion...
thumbnail
Scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center investigated the sedimentary and geochemical properties of the lower reaches of the Pascagoula River along the Mississippi coast of the Gulf of Mexico by collecting estuarine, riverine and marsh sediments. This was done in order to increase understanding of the region's environmental history, describe the long-term (millennial-scale) depositional history, and identify sedimentary intervals associated with extreme marine intrusions. To this end, the group obtained long sediment cores, shovel-dug sediment slabs and marsh and riverine channel/estuarine surface samples from a north-south transect along the river edge from...


map background search result map search result map Projecting the Future Encroachment of Woody Vegetation into Grasslands of the Northern Great Plains by Simulating Climate Conditions and Possible Management Actions SiteID-006 Snake River at West River Road, near Shelley, ID Webinar 2016: Networked Monitoring of Salmon Habitat Temperature: Two Case Studies from Southwestern Alaska Fish/Judy Creek Watershed map Collection, analysis, and age-dating of sediment cores from salt marshes on the south shore of Cape Cod, Massachusetts, from 2013 through 2014 Yukon North Slope Wildlife Management Plan Sedimentary data from the lower Pascagoula River, Mississippi, USA Location of bottom photographs along with images collected in July 2016 by the U.S. Geological Survey off Town Neck Beach, Sandwich, Massachusetts, during field activity 2016-037-FA (JPEG images, point shapefile, and CSV file) BLM REA COP 2010 USA Major Cities pt Outside COP BLM REA SOD 2010 Eco Level IV US BLM REA SOD 2010 USA EPA LevelIV Ecoregions Poly BLM REA NGB 2011 U.S. National Atlas Cities BLM REA NWP 2011 FI C 2000 MTBS BLM REA SLV 2013 Major population centers BLM REA YKL 2011 kll Moose polys dis BLM REA CBR 2010 Water Erosion BLM REA CBR 2010 Hydric Soil Restrictive Definition BLM REA CBR 2010 U.S. Populated Place Points - Population 100,001 - 1,000,000 BLM REA CBR 2010 Great Basin Foothill and Lower Montane Riparian Woodland and Shrubland / Stream - CBR BLM National Land Use Planning Boundaries Map Service Location of bottom photographs along with images collected in July 2016 by the U.S. Geological Survey off Town Neck Beach, Sandwich, Massachusetts, during field activity 2016-037-FA (JPEG images, point shapefile, and CSV file) Collection, analysis, and age-dating of sediment cores from salt marshes on the south shore of Cape Cod, Massachusetts, from 2013 through 2014 Sedimentary data from the lower Pascagoula River, Mississippi, USA SiteID-006 Snake River at West River Road, near Shelley, ID BLM REA YKL 2011 kll Moose polys dis BLM REA SLV 2013 Major population centers Webinar 2016: Networked Monitoring of Salmon Habitat Temperature: Two Case Studies from Southwestern Alaska Yukon North Slope Wildlife Management Plan BLM REA NGB 2011 U.S. National Atlas Cities BLM REA CBR 2010 Water Erosion BLM REA CBR 2010 Hydric Soil Restrictive Definition BLM REA CBR 2010 Great Basin Foothill and Lower Montane Riparian Woodland and Shrubland / Stream - CBR BLM REA NWP 2011 FI C 2000 MTBS Fish/Judy Creek Watershed map BLM REA CBR 2010 U.S. Populated Place Points - Population 100,001 - 1,000,000 Projecting the Future Encroachment of Woody Vegetation into Grasslands of the Northern Great Plains by Simulating Climate Conditions and Possible Management Actions BLM REA SOD 2010 USA EPA LevelIV Ecoregions Poly BLM REA SOD 2010 Eco Level IV US BLM REA COP 2010 USA Major Cities pt Outside COP BLM National Land Use Planning Boundaries Map Service