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This map shows the general location and watersheds within the Sonoran Desert Ecoregion. These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated with these data. The BLM should be cited as the data source in any products derived from...
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The Sevilleta LTER supports a long-term, integrated, interdisciplinary research program addressing key hypotheses on pattern and process in aridland ecosystems. Sevilleta LTER research includes studies in desert grassland and shrubland communities, and riparian and mountain forests emphasizing pulse driven processes in space and time. Key drivers (e.g., climate, fire, water, resource availability) govern dynamics in each landscape component. Our focus on how biotic and abiotic drivers affect spatial and temporal dynamics of aridland ecosystems allows us to conduct long-term research that addresses important basic theories and yet has significant relevance to regional, national and international priorities. The...
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Grasslands of the Sky Islands region once covered over 13 million acres in southeastern Arizona and adjacent portions of New Mexico, Sonora, and Chihuahua. Attempts to evaluate current ecological conditions suggest that approximately two thirds of these remain as intact or restorable grassland habitat. These grasslands provide watershed services such as flood control and aquifer recharge across the region, and continue to support dozens of species of concern. Prioritizing conservation interventions for these remaining grassland blocks has been challenging. Reliable data on condition and conservation value of grasslands in the region have not been systematically summarized. State and national boundaries further complicate...
Renewables in the Mojave Desert This map shows the result of an analysis to characterize the distribution of conservation values across the Mojave Desert Ecoregion. Solar Energy Development in the Western Mojave Desert (July 2012) This assessment identifies areas in the West Mojave Desert where human activities have degraded the land’s conservation value, making them potentially low impact locations for solar development. Authors also describe a comprehensive mitigation program that aims to produce a net improvement to the conservation status of species and habitats in the West Mojave Desert. Publication: An Approach to Enhance the Conservation-Compatibility of Solar Energy Development (January 2012) Mojave...
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The Pacific Southwest Region has geospatial datasets available for download from this website. These datasets are zipped personal or file geodatabases* created using ESRI ArcGis 10.0 software. Additional descriptive information as well as data steward contact information, for each geodatabase, can be found under the metadata link. These metadata files meet the Federal Geospatial Data Committee standards for structure and content.
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Our mission is to develop and maintain a cost-effective, central information source and inventory of the locations, biology, and status of all threatened, endangered, rare, and at-risk plants and animals in Nevada. We use the best available biological data to continually evaluate conservation priorities for over 700 native animals, plants, and vegetation types, focusing on those that are at greatest risk of extinction or serious decline. As a non-regulatory, independent resource for scientifically objective data, environmental review, and technical assistance and expertise, we support the needs of diverse planning, conservation management, research, education, and economic development activities in Nevada. The...
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Proportion of coral bleaching events that were high impact, by marine ecoregion. Data on coral bleaching is derived from ReefBase and represents bleaching from a single year (1998). This was the worst bleaching event on record, linked to an El Niño year. It was also very well monitored, partly because of its unprecedented nature. Bleaching has remained widespread since that time in locations around the world. The data was generously provided by Jamie Oliver from a subset that was prepared for another publication (Oliver et al. 2008), and we have only made minor corrections to errors for the Seychelles in this data set. Bleaching reports in ReefBase were derived from a broad range of sources, but each has been assigned...
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Change in nitrogen flow to the coast since pre-industrial times, by marine ecoregion. The map shows the estimated change in coastal discharge of dissolved inorganic nitrogen (DIN) between preindustrial and contemporary times by marine ecoregion. We calculated this change using data from Green et al. (2005), which was developed using land surface runoff models that included agriculture, livestock, human sewage, and atmospheric deposition sources of DIN. The original spatial data set assigned discharge values to coastal pixels, and we summed the value of pixels within each ecoregion for each time period. We then calculated ecoregional values by subtracting preindustrial sums from contemporary values. These data...
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Number of globally threatened marine mammal species, by marine ecoregion. Using the online IUCN resource, the threatened species for each ecoregion were filtered for marine species only. Threatened species refer to those listed by IUCN Red List as Vulnerable, Endangered, or Critically Endangered (www.redlist.org). We downloaded the digital GIS data and summarized it by marine ecoregion to result in the number of threatened species per marine ecoregion. These data were derived by The Nature Conservancy, and were displayed in a map published in The Atlas of Global Conservation (Hoekstra et al., University of California Press, 2010). More information at http://nature.org/atlas. Data derived from: International Union...
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Ecoregions are based on perceived patterns of a combination of causal and integrative factors including land use, land surface form, potential natural vegetation, and soils (Omernik, 1987).
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The United States, Caribbean and Pacific Basin Major Land Resource Areas (MLRA) Geographic Database serves as the geospatial expression of the map products presented and described in Agricultural Handbook 296 (2006). Land resource categories historically used at State and national levels are land resource units, land resource areas, and land resource regions. Land resource units (LRUs) are the basic units from which major land resource areas (MLRAs) are determined. They are also the basic units for State land resource maps. LRUs are typically coextensive with State general soil map units, but some general soil map units are subdivided into LRUs because of significant geographic differences in soils, climate, water...
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This dataset provides an estimate of landscape intactness (i.e. condition) across the Mexican spotted owl's potential distribution. Current terrestrial intactness estimates are based on the extent to which human impacts such as agriculture, urban development, natural resource extraction, and invasive species have disrupted the landscape across the Colorado Plateau Ecoregion. Terrestrial intactness values will be high in areas where these impacts are low.This 1 km2 resolution dataset (v2_13F) was created for the Colorado Plateau REA stepdown analysis using the open-source logic modeling framework Environmental Evaluation Modeling System (EEMS). Spatially-explicit logic modeling hierarchically integrates numerous...
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This dataset depicts the current predicted distribution of major invasive riparian vegetation in Utah and the Colorado Plateau Ecoregion.Invasive classes were extracted from multiple datasets and then combined into a single raster dataset. A cell value of 1 was assigned where invasives were present and a value of 0 was assigned where they were absent .This invasive species composite (Upland, Riparian, Uncharacteristic Exotic Vegetation) was created from:1) LANDFIRE 120 EVT, 2180: Introduced Riparian Vegetation2) NatureServe Landcover, 8480: Introduced Riparian Vegetation3) Tamarisk Coalition polygons, tamarisk on the Arkansas and Colorado Rivers (NIISS.org)4) Tamarisk 1965 line features (http://www.tamariskmap.org)A...
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This dataset provides an estimate of landscape intactness (i.e. condition) across the desert bighorn sheep's potential distribution. Current terrestrial intactness estimates are based on the extent to which human impacts such as agriculture, urban development, natural resource extraction, and invasive species have disrupted the landscape across the Colorado Plateau Ecoregion. Terrestrial intactness values will be high in areas where these impacts are low.This 1 km2 resolution dataset (v2_13F) was created for the Colorado Plateau REA stepdown analysis using the open-source logic modeling framework Environmental Evaluation Modeling System (EEMS). Spatially-explicit logic modeling hierarchically integrates numerous...
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This dataset provides an estimate of aquatic intactness (i.e. condition or integrity) across the Bonytail Chub's potential distribution. Current aquatic intactness estimates are based on the extent to which human impacts such as water demand, agriculture, urban development, natural resource extraction, dams, diversions, and alterations have disrupted the hydrology, water quality, and habitat quality of aquatic systems across the state of Utah and the Colorado Plateau. Aquatic intactness values will be high in areas where these impacts are low.This HUC6 (12-Digit NHD Hydrologic Unit Code) resolution dataset was created for the Colorado Plateau REA stepdown analysis using the open-source logic modeling framework Environmental...
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This dataset provides an estimate of aquatic intactness (i.e. condition or integrity) across the Wild Nonnative Trout's potential distribution. Current aquatic intactness estimates are based on the extent to which human impacts such as water demand, agriculture, urban development, natural resource extraction, dams, diversions, and alterations have disrupted the hydrology, water quality, and habitat quality of aquatic systems across the state of Utah and the Colorado Plateau. Aquatic intactness values will be high in areas where these impacts are low.This HUC6 (12-Digit NHD Hydrologic Unit Code) resolution dataset was created for the Colorado Plateau REA stepdown analysis using the open-source logic modeling framework...
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Raster dataset (30m resolution mask containing only "1" values) matching the 1 km resolution reporting units grid created for the State of Utah.This dataset was used in the Utah-Colorado Plateau REA Stepdown terrestrial intactness analysis for summarizing raster input data to 1 km reporting units.
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This dataset provides an estimate of landscape intactness (i.e. condition) across the mule deer's potential distribution. Current terrestrial intactness estimates are based on the extent to which human impacts such as agriculture, urban development, natural resource extraction, and invasive species have disrupted the landscape across the Colorado Plateau Ecoregion. Terrestrial intactness values will be high in areas where these impacts are low.This 1 km2 resolution dataset (v2_13F) was created for the Colorado Plateau REA stepdown analysis using the open-source logic modeling framework Environmental Evaluation Modeling System (EEMS). Spatially-explicit logic modeling hierarchically integrates numerous and diverse...
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This dataset provides an estimate of aquatic intactness (i.e. condition or integrity) across the Flannelmouth Sucker's potential distribution. Current aquatic intactness estimates are based on the extent to which human impacts such as water demand, agriculture, urban development, natural resource extraction, dams, diversions, and alterations have disrupted the hydrology, water quality, and habitat quality of aquatic systems across the state of Utah and the Colorado Plateau. Aquatic intactness values will be high in areas where these impacts are low.This HUC6 (12-Digit NHD Hydrologic Unit Code) resolution dataset was created for the Colorado Plateau REA stepdown analysis using the open-source logic modeling framework...


map background search result map search result map Percent of High-Impact Bleaching Events by Marine Ecoregion Number of Threatened Marine Mammal Species by Marine Ecoregion Change in Nitrogen Flow by Marine Ecoregion Aquatic Ecoregions of the Conterminous United States Sevilleta LTER Sustaining the Grassland Sea Nevada Natural Heritage Program USDA Forest Service Pacific Southwest Region Geospatial Data BLM REA MBR 2010 The United States, Caribbean, and Pacific Basin Major Land Resource Area Geographic Database BLM REA COP 2014 UCS UT COP AI Wild Nonnative Trout Status HUC6 BLM REA COP 2014 1 km Reporting Units Matching (30m resolution) Raster Boundary Mask, Utah BLM REA COP 2014 Mule Deer: Current Status, Terrestrial Intactness 1km BLM REA COP 2014 UCS UT COP AI 163906 Flannelmouth Sucker Status HUC6 BLM REA COP 2014 UCS UT AI 163553 Bonytail Chub Status HUC6 BLM REA COP 2014 UCS UT COP AI RU HUC6 EA Poly Densities Completed Run BLM REA COP 2014 Mexican Spotted Owl: Current Status, Terrestrial Intactness 1km BLM REA COP 2014 UT COP iv c rip BLM REA COP 2014 Desert Bighorn Sheep: Current Status, Terrestrial Intactness 1km BLM REA SOD 2010 Overview Sevilleta LTER Sustaining the Grassland Sea BLM REA COP 2014 UCS UT AI 163553 Bonytail Chub Status HUC6 BLM REA COP 2014 Desert Bighorn Sheep: Current Status, Terrestrial Intactness 1km BLM REA COP 2014 Mexican Spotted Owl: Current Status, Terrestrial Intactness 1km BLM REA MBR 2010 The United States, Caribbean, and Pacific Basin Major Land Resource Area Geographic Database BLM REA COP 2014 Mule Deer: Current Status, Terrestrial Intactness 1km BLM REA COP 2014 UCS UT COP AI 163906 Flannelmouth Sucker Status HUC6 BLM REA COP 2014 UCS UT COP AI Wild Nonnative Trout Status HUC6 Nevada Natural Heritage Program BLM REA COP 2014 UCS UT COP AI RU HUC6 EA Poly Densities Completed Run BLM REA COP 2014 1 km Reporting Units Matching (30m resolution) Raster Boundary Mask, Utah BLM REA SOD 2010 Overview BLM REA COP 2014 UT COP iv c rip USDA Forest Service Pacific Southwest Region Geospatial Data Aquatic Ecoregions of the Conterminous United States Percent of High-Impact Bleaching Events by Marine Ecoregion Number of Threatened Marine Mammal Species by Marine Ecoregion Change in Nitrogen Flow by Marine Ecoregion