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Grasslands comprise a small part of the Chihuahuan Desert but are vital to the biological diversity of the ecoregion. Characteristic grasses of the Chihuahuan Desert are tobosa (Pleuraphis mutica) and black grama (Bouteloua eriopoda) but other common species include alakali sacaton (Sporobolus airoides), big alkali sacaton (S. wrightii), mesa dropseed (S. flexuosus), blue grama (B. gracilis), sideoats grama (B. curtipendula ), hairy grama (B. hirsuta), slender grama (B. filiformis), chino grama (B. brevista), spruce top grama (B. chondrosioides), bush muhly (Muhlenbergia porteri), several three awns (Aristida spp.), and fluff grass (Dasyochloa pulchela) (Johnson 1974, Dinerstein et al. 2000). Many of the sites discussed...
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The Desert Renewable Energy Conservation Plan (DRECP), a major component of California's renewable energy planning efforts, will help provide effective protection and conservation of desert ecosystems while allowing for the appropriate development of renewable energy projects. The DRECP is focused on the desert regions and adjacent lands of seven California counties - Imperial, Inyo, Kern, Los Angeles, Riverside, San Bernardino, and San Diego. It is being prepared through an unprecedented collaborative effort between the California Energy Commission, California Department of Fish and Wildlife, the U.S. Bureau of Land Management, and the U.S. Fish and Wildlife Service also known as the Renewable Energy Action Team....
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Natural landscapes in the Southwestern United States are changing. In recent decades, rising temperatures and drought have led to drier conditions, contributed to large-scale ecological impacts, and affected many plant and animal species across the region. The current and future trajectory of climate change underscores the need for managers and conservation professionals to understand the impacts of these patterns on natural resources. In this regional assessment of the Southwest Climate Change Initiative, we evaluate changes in annual average temperatures from 1951–2006 across major habitats and large watersheds and compare these changes to the number of species of conservation concern that are found within these...
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A battery of questions was developed and applied to different stakeholders immersed in knowledge of the condition and the use of grazing of grasslands. One hundred people were surveyed amongst livestock producers (both from private ranches and from communal ejidos), and students and researchers at regional institutions involved in agricultural sciences in different states of Mexico: Coahuila, Durango, San Luis Potosí, and Jalisco. The objective of the survey was to determine aspects of stakeholders’ interpretation of the condition of grasslands in their region under conditions of extensive grazing, such as soil condition, harvest efficiency, vegetation condition, openness to community organizing of grazing, capacity...
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Federal protected areas such as national parks and preserves and wildlife refuges cover large areas of the study area. Because of its remote location, few people visit the region for recreational use, and except for the Iditarod, activities are concentrated in the summer. Recreation in the region includes sport hunting, sport fishing, and general outdoor hiking and camping activities.
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ownership_poly_dissolve: This theme portrays information related to surface jurisdiction of lands located in the states of Oregon and Washington.
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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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LandScope America—a collaborative project of NatureServe and the National Geographic Society—is a new online resource for the land-protection community and the public. By bringing together maps, data, photos, and stories about America’s natural places and open spaces, our goal is to inform and inspire conservation of our lands and waters.
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Selected GIS datasets for the Southwestern Region are available for download from this page. Use of most of these files requires GIS software such as ArcGIS, ArcView, ArcInfo or ArcExplorer. Most of these datasets are provided in ArcView shapefile (shp) format. ArcExplorer, a free, basic GIS software package available from ESRI will read the data in shapefile format (ESRI and the ESRI Logo are licensed trademarks of Environmental Systems Research Institute, Inc.). Some datasets will also have related tables that can be used with the geographic data. Tabular data will be in Microsoft Excel format. All files have been compressed with zip and can be uncompressed with programs such as WinZip. Be aware that some of the...
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The Southwest Regional Gap Analysis Project (SWReGAP) is an update of the Gap Analysis Program’s mapping and assessment of biodiversity for the five-state region encompassing Arizona, Colorado, Nevada, New Mexico, and Utah. It is a multi-institutional cooperative effort coordinated by the U.S. Geological Survey Gap Analysis Program. The primary objective of the update is to use a coordinated mapping approach to create detailed, seamless GIS maps of land cover, all native terrestrial vertebrate species, land stewardship, and management status, and to analyze this information to identify those biotic elements that are underrepresented on lands managed for their long term conservation or are “gaps.”
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Pima County makes extensive use of Geographical Information System (GIS) technology for making maps. For the Sonoran Desert Conservation Plan, this was an important technology for assembling the extensive existing data, both digital and non-digital, identifying critical gaps in the data and potential remedies, and providing a means for analyzing the information on biological and physical resources over the six million acre study area. SDCP Mapguide was created to display many of the natural resource GIS data layers, but Mapguide is being replaced with PimaMaps. You can use either to make your own overlays on aerial photos, line maps, or USGS topography. Customize your online map while panning and zooming on the...
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This "Surface Management Agency" data layer portrays tracts of federal land for the United States and classifies these holdings by administrative agency. Multiple federal agencies have contributed to the contents of this layer and it is in a continuous state of update. Source and date of feature updates are tracked to the feature level.
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This "Surface Management Agency" data layer portrays tracts of federal land for the United States and classifies these holdings by administrative agency. Multiple federal agencies have contributed to the contents of this layer and it is in a continuous state of update. Source and date of feature updates are tracked to the feature level.
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This "Surface Management Agency" data layer portrays tracts of federal land for the United States and classifies these holdings by administrative agency. Multiple federal agencies have contributed to the contents of this layer and it is in a continuous state of update. Source and date of feature updates are tracked to the feature level. The dataset was clipped to the ecoregion boundary and queried for National parks, National Preserves, and National Wildlife Refuges.
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This "Surface Management Agency" data layer portrays tracts of federal land for the United States and classifies these holdings by administrative agency. Multiple federal agencies have contributed to the contents of this layer and it is in a continuous state of update. Source and date of feature updates are tracked to the feature level.
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This "Surface Management Agency" data layer portrays tracts of federal land for the United States and classifies these holdings by administrative agency. Multiple federal agencies have contributed to the contents of this layer and it is in a continuous state of update. Source and date of feature updates are tracked to the feature level.
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This "Surface Management Agency" data layer portrays tracts of federal land for the United States and classifies these holdings by administrative agency. Multiple federal agencies have contributed to the contents of this layer and it is in a continuous state of update. Source and date of feature updates are tracked to the feature level.
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This dataset is HUC6 for OR downloaded from http://www.oregon.gov/DAS/EISPD/GEO/alphalist.shtml#H and attributed with land ownership information. This dataset is part of a larger groundwater project across the Pacific NW (Brown et al. 2009) region which has two primary goals: (1) develop tools to identify where and how groundwater is important to biodiversity conservation and (2) assess the pressing threats to the quantity and quality of that groundwater and develop strategies to abate those threats. Data and analyses conducted are intended for use at a statewide scale. Therefore, more detailed mapping may be necessary at local scales. For more information please contact the Oregon Field Office of The Nature Conservancy...


map background search result map search result map USFS Geospatial Library, Rocky Mountain Region 2013 BLM Rogue Management Ownership Dissolve Polygon Ownership in HUC6 watersheds, Oregon Desert Renewable Energy Conservation Plan LandScope America Southwest Regional Gap Analysis Project Sonoran Desert Conservation Plan MapGuide Map Sevilleta GIS Vector Datasets Status and Distribution of Chihuahuan Desert Grasslands in the United States and Mexico Managing Changing Landscapes in the Southwestern United States USDA Forest Service Southwestern Region GIS Datasets Perceptions of the condition of semiarid grasslands under grazing regimes in Mexico/ Percepción de la condición del pastizal  bajo pastoreo, en México semiárido BLM REA SOD 2010 SMA BLM Lands BLM REA MAR 2012 SMA poly BLM REA NGB 2011 BLM Surface Management Agency Ownership BLM REA SLV 2013 SMA Visual BLM REA YKL 2011 Parks, Preserves and Reserves in the Yukon River Lowlands - Kuskokwim Mountains - Lime Hills BLM REA YKL 2011 SMA poly BLM REA MBR 2010 SMA poly BLM REA SNK 2010 SMA poly BLM REA SLV 2013 SMA Visual Sonoran Desert Conservation Plan MapGuide Map 2013 BLM Rogue Management Ownership Dissolve Polygon Desert Renewable Energy Conservation Plan BLM REA SOD 2010 SMA BLM Lands USFS Geospatial Library, Rocky Mountain Region Ownership in HUC6 watersheds, Oregon BLM REA NGB 2011 BLM Surface Management Agency Ownership BLM REA YKL 2011 Parks, Preserves and Reserves in the Yukon River Lowlands - Kuskokwim Mountains - Lime Hills BLM REA MAR 2012 SMA poly USDA Forest Service Southwestern Region GIS Datasets BLM REA SNK 2010 SMA poly BLM REA MBR 2010 SMA poly Managing Changing Landscapes in the Southwestern United States Status and Distribution of Chihuahuan Desert Grasslands in the United States and Mexico Southwest Regional Gap Analysis Project Perceptions of the condition of semiarid grasslands under grazing regimes in Mexico/ Percepción de la condición del pastizal  bajo pastoreo, en México semiárido BLM REA YKL 2011 SMA poly LandScope America Sevilleta GIS Vector Datasets