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To help resource managers prioritize management actions across large landscapes, the Integrated Landscape Assessment Project (ILAP) produced databases, reports, maps, analyses, and other information showing mid- to broad-scale (thousands to hundreds of thousands of hectares and larger areas) vegetation conditions and potential future trends, key wildlife habitat conditions and trends, wildfire hazard, potential economic value of products that might be generated during vegetation management, and other critical information for all lands and all major upland vegetation types in Arizona, New Mexico, Oregon, and Washington. ILAP work involved gathering and consolidating existing information, developing new information...
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The Arizona Game and Fish Department (Department) recently revised its State Wildlife Action Plan that provides a framework and information to assist in setting conservation priorities for the state’s wildlife and habitats. Data gathered for Arizona’s State Wildlife Action Plan represents myriad sources and extensive public comment, and is used to support the Department’s efforts to develop proactive conservation goals and objectives. Much of that data (more than 300 data layers) is compiled into a single model of wildlife conservation potential, the Species and Habitat Conservation Guide. To ensure the State Wildlife Action Plan information is accessible and useful to everyone, the Arizona Game and Fish Department...
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In the border region between Mexico, Arizona and New Mexico, a little known landscape supports a unique mix of temperate and subtropical ecosystems, the likes of which are found nowhere else in the United States. The Sky Islands are an area of more than 40 separate mountain ranges isolated by what was once a sea of more than 13 million acres of grassland. It is one of America’s hotspots for wildlife diversity, hosting more than twice as many mammal species as Yellowstone National Park and supporting the nation’s highest diversity of reptiles, bees, and ants. Additionally, these grasslands are a key connecting landscape between the Sierra Madre Occidental Mountains in Mexico and the Rocky Mountains to the North and...
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Occupancy models provide a reliable method of estimating species distributions while accounting for imperfect detectability. The cost of accounting for false absences is that detection and nondetection surveys typically require repeated visits to a site or multiple-observer techniques. More efficient methods of collecting data to estimate detection probabilities would allow additional sites to be surveyed for the same amount of effort, which would support more precise estimation of covariate effects to improve inference about underlying ecological processes. Time-to-detection surveys allow the estimation of detection probability based on a single site visit by one observer, and therefore might be an efficient technique...
These data describe the date, time (night vs. day), observer, and air temperature of each amphibian occupancy survey conducted in coastal dune drainages from 2014 through 2016. Survey-specific covariates explain patterns in detection probabilities among surveys, thereby reducing bias in occupancy models and improving future surveys.
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Units dividing the Columbia Basin in to BC Hydro reservoir-based watersheds
Tags: Acquisition, Agreements, At Risk, At Risk, BC, All tags...
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This dataset consists of polygon range maps for terrestrial vertebrate species in Alaska. The maps are shapefiles between 0 and 12 MB in size to be used in OpenGIS or ArcGIS on a PC. Individual species range maps were developed using the best available known range of the species (derived from a variety of available point data sources), overlaid with watershed-scale units (8-digit HUCs; standard map for U.S. GAP project) for the state of Alaska in the Alaska Albers NAD83 projection. These maps present the data in the form that they were created in, are subject to change, and are freely available from the the Alaska GAP project.
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Some of the SNK rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This dataset consists of raster distribution maps for terrestrial vertebrate species in Alaska. Individual species distribution maps were developed using the best available known occurrence points for each species and modeled using MaxEnt software and a series of environmental predictor variables. Output maps were clipped...
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Some of the SNK rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This dataset consists of raster distribution maps for terrestrial vertebrate species in Alaska. Individual species distribution maps were developed using the best available known occurrence points for each species and modeled using MaxEnt software and a series of environmental predictor variables. Output maps were clipped...
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Chihuahuan Desert landscapes exemplify the ecological conditions, vulnerability, and management challenges in arid and semi-arid regions around the world. The goal of the Jornada Basin Long Term Ecological Research program (JRN LTER) established in 1982 is to understand and quantify the key factors and processes controlling ecosystem dynamics and patterns in Chihuahuan Desert landscapes. In collaboration with the Jornada Experimental Range (USDA ARS), studies initiated in 1915 have been incorporated into the JRN LTER program. Previous research focused on desertification, a state change from perennial grasslands to woody plant dominance that occurs globally. Based on findings from growing long-term databases, the...
Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CMQ3, Chihuahuan Desert, DLCC, Desert LCC, English, All tags...
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Sky Island grasslands of central and southern Arizona, southern New Mexico and northern Mexico form the “grassland seas” that surround small forested mountain ranges in the borderlands. Their unique biogeographical setting and the ecological gradients associated with “Sky Island mountains” add tremendous floral and faunal diversity to these grasslands and the region as a whole. Sky Island grasslands have undergone dramatic vegetation changes over the last 130 years including encroachment by shrubs, loss of perennial grass cover and spread of non-native species. Changes in grassland composition and structure have not occurred uniformly across the region and they are dynamic and ongoing. In 2009, The National Fish...
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How well are we protecting common plants and animals? Gap Analysis is the science of answering this question. Developing the data and tools to support that science is the mission of the USGS Gap Analysis Program (GAP). GAP works to ensure that common species – those that are not officially endangered – remain common by identifying those species and plant communities that are not adequately represented in existing conservation lands. Learn more about Gap Analysis >> We work with a wide range of government, academic, non-profit and private partners, providing them with essential data and analyses that they can use to protect the habitats on which the survival of common species depends.
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California Red-legged Frogs (Rana draytonii) are typically regarded as inhabitants of permanent ponds, marshes, and slow-moving streams, but their ecology in other habitats, including coastal dunes, remains obscure. To avoid and minimize potential negative effects of dune restoration activities, we studied the spatial ecology, habitat selection, and survival of California Red-legged Frogs in coastal dune drainages at Point Reyes National Seashore, California. Frogs remained in their home drainages throughout the summer, and, with some notable exceptions, most remained close to water. Home ranges of California Red-legged Frogs in dunes were generally small, and they selected areas near water with logs that served...
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Some of the SNK rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This dataset consists of raster distribution maps for terrestrial vertebrate species in Alaska. Individual species distribution maps were developed using the best available known occurrence points for each species and modeled using MaxEnt software and a series of environmental predictor variables. Output maps were clipped...
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Some of the SNK rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This dataset consists of raster distribution maps for terrestrial vertebrate species in Alaska. Individual species distribution maps were developed using the best available known occurrence points for each species and modeled using MaxEnt software and a series of environmental predictor variables. Output maps were clipped...
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Some of the SNK rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This dataset consists of raster distribution maps for terrestrial vertebrate species in Alaska. Individual species distribution maps were developed using the best available known occurrence points for each species and modeled using MaxEnt software and a series of environmental predictor variables. Output maps were clipped...
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Some of the SNK rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This dataset consists of raster distribution maps for terrestrial vertebrate species in Alaska. Individual species distribution maps were developed using the best available known occurrence points for each species and modeled using MaxEnt software and a series of environmental predictor variables. Output maps were clipped...
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This report is volume 2 of a two-volume ecological assessment of grassland ecosystems in the Southwestern United States. Broad-scale assessments are syntheses of current scientific knowledge, including a description of uncertainties and assumptions, to provide a characterization and comprehensive description of ecological, social, and economic components within an assessment area. Volume 1 of this assessment focused on the ecology, types, conditions, and management practices of Southwestern grasslands. Volume 2 (this volume) describes wildlife and fish species, their habitat requirements, and species-specific management concerns, in Southwestern grasslands. This assessment is regional in scale and pertains primarily...
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REAs synthesize the best available information about resource conditions and trends within an ecoregion. They highlight and map areas of high ecological value, including important wildlife habitats and corridors, and gauge their potential risks from climate change, wildfires, invasive species, energy development, and urban growth. REAs also map areas that have high energy development potential, and relatively low ecological value, which could be best-suited for siting future energy development. In addition, REAs establish landscape-scale baseline ecological data to gauge the effect and effectiveness of future management actions. The Sonoran Desert REA was initiated in July 2010. It has been completed and peer reviewed...


map background search result map search result map FWCP Columbia Basin Dam Units HabiMap™ Arizona Sonoran Desert Rapid Ecoregional Assessment (REA) Integrated Landscape Assessment Project Jornada Bibliography Assessment of Grassland Ecosystem Conditions in the Southwestern United States: Wildlife and Fish, Volume 2 Kentucky - Tier 1 Conservation Areas Sky Island Grasslands National Gap Analysis Program (GAP) Sky Island Grassland Assessment California Red-Legged Frogs in Point Reyes coastal dune drainages (2015) Time to detection data for Point Reyes pond-breeding amphibians, 2017 BLM REA SNK 2010 Alaska Gap Analysis Project: Breeding Season Distribution Map for Branta canadensis BLM REA SNK 2010 Alaska Gap Analysis Project: Year Round Distribution Map for Alces americanus BLM REA SNK 2010 Alaska Gap Analysis Project: Year Round Distribution Map for Ovibos moschatus BLM REA SNK 2010 Alaska Gap Analysis Project: Seasonal range maps for Caribou BLM REA SNK 2010 Alaska Gap Analysis Project: Breeding Season Distribution Map for Plectrophenax hyperboreus BLM REA SNK 2010 Alaska Gap Analsysis Project: Year Round Distribution Map for Rangifer tarandus BLM REA SNK 2010 Alaska Gap Analysis Project: Breeding Season Distribution Map for Limosa haemastica California Red-Legged Frogs in Point Reyes coastal dune drainages (2015) Jornada Bibliography Time to detection data for Point Reyes pond-breeding amphibians, 2017 Kentucky - Tier 1 Conservation Areas Sky Island Grasslands Sky Island Grassland Assessment Sonoran Desert Rapid Ecoregional Assessment (REA) FWCP Columbia Basin Dam Units HabiMap™ Arizona BLM REA SNK 2010 Alaska Gap Analysis Project: Seasonal range maps for Caribou BLM REA SNK 2010 Alaska Gap Analysis Project: Breeding Season Distribution Map for Plectrophenax hyperboreus BLM REA SNK 2010 Alaska Gap Analysis Project: Breeding Season Distribution Map for Limosa haemastica BLM REA SNK 2010 Alaska Gap Analysis Project: Breeding Season Distribution Map for Branta canadensis BLM REA SNK 2010 Alaska Gap Analysis Project: Year Round Distribution Map for Alces americanus BLM REA SNK 2010 Alaska Gap Analysis Project: Year Round Distribution Map for Ovibos moschatus BLM REA SNK 2010 Alaska Gap Analsysis Project: Year Round Distribution Map for Rangifer tarandus Assessment of Grassland Ecosystem Conditions in the Southwestern United States: Wildlife and Fish, Volume 2 Integrated Landscape Assessment Project National Gap Analysis Program (GAP)