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Status and Distribution of Chihuahuan Desert Grasslands in the United States and Mexico 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... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: English, Madrean, Spanish, agriculture, assessment, All tags... biodiversity, bird, climate, connectivity, desertification, ecoregion, endangered, fire, grazing, invertebrate, mammal, map, ownership, plant, priority, protected area, rare, reptile, scrub, shrub, threat, vegetation, wildlife, Fewer tags Extent and Condition of Grasslands in Arizona, Northern Mexico, and Southwestern New Mexico This file represents the final version of an assessment of the extent, condition, and distribution of grassland types in Arizona as indicated by expert interviews and field verification. Coverage includes the state of Arizona, Southwestern portions of the state of New Mexico, and the Northern portion of Sonora, Mexico. Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: English, GIS, Madrean, US, assessment, All tags... biodiversity, ecoregion, erosion, fire, grassland, grazing, management, plant, priority, restoration, shrub, vegetation, Fewer tags Desert Renewable Energy Conservation Plan 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.... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: English, GIS, OHV, US, bird, All tags... burro, development, ecoregion, endangered, energy, erosion, fish, grassland, horse, land cover, mammal, management, map, ownership, plan, plant, protected area, rare, recreation, renewable, reptile, scrub, shrub, threatened, threats, vegetation, wildlife, Fewer tags Natural Resource Condition Assessments What are current conditions for important park natural resources? What are the critical data and knowledge gaps? What are some of the factors that are influencing park resource conditions? Natural Resource Condition Assessments (NRCAs) evaluate and report on the above for a subset of important natural resources in national park units (hereafter, parks). Focal study resources and indicators are selected on a park-by-park basis, guided by use of structured resource assessment and reporting frameworks. Considerations include park resource setting and enabling legislation (what are this park's most important natural resources?) and presently available data and expertise (what can be evaluated at this time?). In addition... Categories: Data; Types: ArcGIS REST Map Service, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, English, GIS, Madrean, Mojave Desert, All tags... Sonoran Desert, US, agriculture, amphibian, assessment, biodiversity, bird, climate, connectivity, contamination, development, ecoregion, endangered, energy, erosion, fire, grassland, grazing, groundwater, invasive, inventory, invertebrate, land cover, mammal, management, map, mining, model, monitoring, oil, plant, priority, protected area, rare, recreation, renewable, reptile, research, riparian, river, road, scrub, shrub, soil, spring, stream, threat, threatened, topography, vegetation, vulnerability, water, watershed, wetland, wildlife, Fewer tags Managing Changing Landscapes in the Southwestern United States 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... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, English, Madrean, Mojave Desert, Sonoran Desert, All tags... US, assessment, biodiversity, bird, climate, ecoregion, endangered, grassland, groundwater, mammal, management, map, model, monitoring, ownership, plant, priority, protected area, rare, research, resilience, restoration, riparian, river, shrub, stream, threat, threatened, vulnerability, water, watershed, wetland, wildlife, Fewer tags Southwest Watershed Research Publications ARS scientists publish results of their research projects in many formats. Listed below are the publications from research projects conducted at this location. Clicking on a publication title will take you to more information on the publication. Clicking on the reprint icon will take you to the publication reprint. Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: GIS, climate, erosion, fire, grassland, All tags... grazing, remote sensing, shrub, water, wildlife, Fewer tags Historical and Contemporary Geographic Data Reveal Complex Spatial and Temporal Responses of Vegetation to Climate and Land Stewardship Vegetation and land-cover changes are not always directional but follow complex trajectories over space and time, driven by changing anthropogenic and abiotic conditions. We present a multi-observational approach to land-change analysis that addresses the complex geographic and temporal variability of vegetation changes related to climate and land use. Using land-ownership data as a proxy for land-use practices, multitemporal land-cover maps, and repeat photography dating to the late 19th century, we examine changing spatial and temporal distributions of two vegetation types with high conservation value in the southwestern United States: grasslands and riparian vegetation. In contrast to many reported vegetation... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arizona, climate, grassland, land cover, management, All tags... map, restoration, riparian, shrub, vegetation, Fewer tags Remote Sensing Sagebrush Habitat Products for the Gunnison Basin in Colorado (percent bare ground) North American sagebrush-steppe ecosystems have decreased by about 50 percent since European settlement. As a result, sagebrush-steppe dependent species, such as the Gunnison sage-grouse, have experienced drastic range contractions and population declines. Coordinated ecosystem-wide research, integrated with monitoring and management activities, is needed to help maintain existing sagebrush habitats; however, products that accurately model and map sagebrush habitats in detail over the Gunnison Basin in Colorado are still unavailable. This research employs a combination of methods, including (1) modeling sagebrush rangeland as a series of independent objective components that can be combined and customized by any... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: 002, 007, 010, CO, Chaffee, All tags... Custer, Douglas, Eagle, Fremont, Gunnison, Lake, National Standards for Spatial Digital Accuracy (NSSDA), Park, Pitkin, Sagebrush Rangeland, Saguache, State of Colorado, Summit, Teller, U.S., U.S. Geological Survey, US, USGS, United States, Wyomingensis, bare ground, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, litter, sagebrush, shrub, Fewer tags Remote Sensing Sagebrush Habitat Products for the Gunnison Basin in Colorado (percent herbaceous cover) North American sagebrush-steppe ecosystems have decreased by about 50 percent since European settlement. As a result, sagebrush-steppe dependent species, such as the Gunnison sage-grouse, have experienced drastic range contractions and population declines. Coordinated ecosystem-wide research, integrated with monitoring and management activities, is needed to help maintain existing sagebrush habitats; however, products that accurately model and map sagebrush habitats in detail over the Gunnison Basin in Colorado are still unavailable. This research employs a combination of methods, including (1) modeling sagebrush rangeland as a series of independent objective components that can be combined and customized by any... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: 002, 007, 010, CO, Chaffee, All tags... Custer, Douglas, Eagle, Fremont, Gunnison, Lake, National Standards for Spatial Digital Accuracy (NSSDA), Park, Pitkin, Sagebrush Rangeland, Saguache, State of Colorado, Summit, Teller, U.S., U.S. Geological Survey, US, USGS, United States, Wyomingensis, bare ground, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, litter, sagebrush, shrub, Fewer tags Great Dismal Swamp field measurements for aboveground and belowground biomass Plot-level field data were collected in the summer of 2014 to estimate aboveground and belowground biomass in the Great Dismal Swamp National Wildlife Refuge and Dismal Swamp State Park in North Carolina and Virginia. Data were collected at 85 plots. The location of the center of each plot was recorded with a Trimble ProXH global positioning system (GPS) and differentially corrected. Data files included 1: GDS_plots.csv, 2. GDS_FWD.csv, 3. GDS_LWD.csv, 4. GDS_Shrubs.csv, 5. GDS_Trees.csv, and 6. GDS_plot_summaries.csv. The data contained in GDS_plot_summaries.csv were calculated from the GDS_plots.csv, GDS_FWD.csv, GDS_LWD.csv, GDS_Shrubs.csv, GDS_Trees.csv files using the R statistical software environment (R Core... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Biomass, Botany, Cover, Duff, Ecology, All tags... Forestry, Great Dismal Swamp, Height, Herbaceous, Litter, North Carolina, Peat, Shrub, Soil Sciences, Tree, USGS Science Data Catalog (SDC), United States, Vegetation, Virginia, Fewer tags LandScope America 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. Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, English, GIS, Mojave Desert, Sonoran Desert, All tags... US, biodiversity, climate, connectivity, development, ecoregion, endangered, energy, grassland, land cover, map, national, oil, ownership, plant, priority, protected area, rare, renewable, restoration, riparian, river, scrub, shrub, stream, threat, threatened, vegetation, vulnerability, water, watershed, wildlife, Fewer tags Central Mojave Vegetation Map The Central Mojave Vegetation Map (mojveg.e00) displays vegetation and other land cover types in the eastern Mojave of California. Map labels represent alliances and groups of alliances as described by the National Vegetation Classification. The nominal minimum mapping unit is 5 hectares. Each map unit is labeled by a primary land cover type and a secondary type where applicable. In addition, the source of data for labeling each map unit is also identified in the attribute table for each map unit. Data were developed using field visits, 1:32,000 aerial photography, SPOT satellite imagery, and predictive modeling. Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, English, GIS, US, agriculture, All tags... development, grassland, inventory, land cover, map, mining, plant, scrub, shrub, vegetation, Fewer tags Southwest Regional Gap Analysis Project 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.” Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, English, GIS, Madrean, Mojave Desert, All tags... Sonoran Desert, US, amphibian, assessment, biodiversity, bird, ecoregion, endangered, grassland, mammal, management, map, model, ownership, priority, protected area, protected area, rare, remote sensing, reptile, river, road, scrub, shrub, threatened, vegetation, vulnerability, watershed, wildlife, Fewer tags Nevada Wildlife Action Plan Congress passed the State Wildlife Grants program (SWG) in 2001 in recognition of the need for funding of wildlife diversity programs. Congress mandated each state and territory to develop a Comprehensive Wildlife Conservation Strategy (now named Wildlife Action Plans) by 2005 in order to continue to receive federal funds through the SWG program. Nevada’s Wildlife Action Plan (WAP) was completed and approved by the U.S. Fish and Wildlife Service (USFWS) in 2005. Nevada’s WAP has served as a plan of action for state wildlife conservation and funding by targeting the species of greatest conservation need and the key habitats on which they depend. To date, NDOW has received over $11 million in federal dollars through... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: climate, map, plan, priority, rare, All tags... shrub, threat, vegetation, vulnerability, wildlife, Fewer tags Remote Sensing Sagebrush Habitat Products for the Gunnison Basin in Colorado (percent litter) North American sagebrush-steppe ecosystems have decreased by about 50 percent since European settlement. As a result, sagebrush-steppe dependent species, such as the Gunnison sage-grouse, have experienced drastic range contractions and population declines. Coordinated ecosystem-wide research, integrated with monitoring and management activities, is needed to help maintain existing sagebrush habitats; however, products that accurately model and map sagebrush habitats in detail over the Gunnison Basin in Colorado are still unavailable. This research employs a combination of methods, including (1) modeling sagebrush rangeland as a series of independent objective components that can be combined and customized by any... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: 002, 007, 010, CO, Chaffee, All tags... Custer, Douglas, Eagle, Fremont, Gunnison, Lake, National Standards for Spatial Digital Accuracy (NSSDA), Park, Pitkin, Sagebrush Rangeland, Saguache, State of Colorado, Summit, Teller, U.S., U.S. Geological Survey, US, USGS, United States, Wyomingensis, bare ground, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, litter, sagebrush, shrub, Fewer tags Remote Sensing Sagebrush Habitat Products for the Gunnison Basin in Colorado (shrub height) North American sagebrush-steppe ecosystems have decreased by about 50 percent since European settlement. As a result, sagebrush-steppe dependent species, such as the Gunnison sage-grouse, have experienced drastic range contractions and population declines. Coordinated ecosystem-wide research, integrated with monitoring and management activities, is needed to help maintain existing sagebrush habitats; however, products that accurately model and map sagebrush habitats in detail over the Gunnison Basin in Colorado are still unavailable. This research employs a combination of methods, including (1) modeling sagebrush rangeland as a series of independent objective components that can be combined and customized by any... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: 002, 007, 010, CO, Chaffee, All tags... Custer, Douglas, Eagle, Fremont, Gunnison, Lake, National Standards for Spatial Digital Accuracy (NSSDA), Park, Pitkin, Sagebrush Rangeland, Saguache, State of Colorado, Summit, Teller, U.S., U.S. Geological Survey, US, USGS, United States, Wyomingensis, bare ground, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, litter, sagebrush, shrub, Fewer tags Response of vegetation distribution, ecosystem productivity, and fire to climate change scenarios for California The response of vegetation distribution, carbon, and fire to three scenarios of future climate change was simulated for California using the MC1 Dynamic General Vegetation Model. Under all three scenarios, Alpine/Subalpine Forest cover declined, and increases in the productivity of evergreen hardwoods led to the displacement of Evergreen Conifer Forest by Mixed Evergreen Forest. Grassland expanded, largely at the expense of Woodland and Shrubland, even under the cooler and less dry climate scenario where increased woody plant production was offset by increased wildfire. Increases in net primary productivity under the cooler and less dry scenario contributed to a simulated carbon sink of about 321 teragrams for California... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, English, climate, fire, grassland, All tags... land cover, map, model, shrub, vegetation, Fewer tags Sevilleta LTER 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... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, English, New Mexico, US, agency, All tags... agriculture, biodiversity, bird, climate, desertification, ecoregion, fire, fungi, grassland, grazing, invasive, invertebrate, invertebrate, mammal, plant, remote sensing, reptile, riparian, shrub, soil, spring, topography, vegetation, water, wildlife, Fewer tags Sustaining the Grassland Sea 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... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, English, Madrean, Mexico, US, All tags... agriculture, assessment, bird, climate, climate, connectivity, development, ecoregion, endangered, erosion, fire, grassland, grazing, groundwater, invasive, land cover, mammal, management, map, mining, model, monitoring, ownership, plan, plant, priority, protected area, rare, reptile, restoration, riparian, scrub, shrub, stream, threat, threatened, vegetation, vulnerability, water, watershed, wetland, wildlife, Fewer tags NPScape NPScape is a landscape dynamics monitoring project that provides landscape-level data, tools, and evaluations for natural resource management, planning, and interpretation. The target audience for NPScape spans the range from GIS specialists who will benefit from the geospatial products, to ecologists and natural resource specialists who will be interested in the landscape metrics presented in a local and regional context, to park superintendents and other land managers who can incorporate the maps and graphics into reports or briefings. Categories: Data; Types: ArcGIS REST Map Service, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: English, GIS, US, connectivity, development, All tags... grassland, land cover, landscape, map, model, monitoring, ownership, protected area, rare, road, shrub, Fewer tags 1 2 3 »