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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 Ecoregion and land-use influence invertebrate and detritus transport from headwater streams P>1. Habitats are often connected by fluxes of energy and nutrients across their boundaries. For example, headwater streams are linked to surrounding riparian vegetation through invertebrate and leaf litter inputs, and there is evidence that consumers in downstream habitats are subsidised by resources flowing from headwater systems. However, the strength of these linkages and the manner in which potential headwater subsidies vary along climatic and disturbance gradients are unknown. 2. We quantified the downstream transport of invertebrates, organic matter and inorganic sediment from 60 fishless headwater streams in the Wenatchee River Basin located on the eastern slope of the Cascade Range in Washington, U.S.A.... Categories: Publication; Types: Citation; Tags: Ecoregion, headwater, influence, invertebrate, land-use, All tags... streams, transport, Fewer tags Potential benefits of commercial willow short rotation coppice (SRC) for farm-scale plant and invertebrate communities in the agri-environment This paper describes the potential applications of renewable energy sources to replace fossil fuel combustion as the prime energy sources in various countries, and discusses problems associated with biomass combustion in boiler power systems. Here, the term biomass includes organic matter produced as a result of photosynthesis as well as municipal, industrial and animal waste material. Brief summaries of the basic concepts involved in the combustion of biomass fuels are presented. Renewable energy sources (RES) supply 14% of the total world energy demand. RES are biomass, hydropower, geothermal, solar, wind and marine energies. The renewables are the primary, domestic and clean or inexhaustible energy resources.... Categories: Publication; Types: Citation; Tags: Potential, agri-environment, benefits, commercial, communities, All tags... farm-scale, invertebrate, plant, short rotation coppice (SRC), Fewer tags The IUCN Red List of Threatened Species (TM) The IUCN Red List of Threatened Species contains assessments for just over 76,000 species, of which about two-thirds have spatial data. This spatial data provided below is for comprehensively assessed taxonomic groups. It is important to note that some species such as those listed as Data Deficient are not mapped and subspecies are mapped within the parental species. The data is available as ESRI shapefiles format and contains the known range of each species. Ranges are depicted as polygons, except for the freshwater HydroSHED tables. The shapefiles contain taxonomic information, distribution status, IUCN Red List category, sources and other details about the maps (see metadata document). Please note that the files... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: GIS, amphibian, endangered, fish, invertebrate, All tags... mammal, map, rare, reptile, threatened, Fewer tags Climate Change Vulnerability and Adaptation Strategies for Natural Communities NatureServe worked with several federal, state, and NGO partners in the United States and Mexico to conduct a climate change vulnerability assessment of major natural community types found within the Mojave and Sonoran Deserts. The project focused on ten major upland, riparian, and aquatic community types, including pinyon-juniper woodlands, Joshua tree-blackbrush scrub, creosote-bursage scrub, salt desert scrub, Paloverde-mixed cacti scrub, semi-desert grassland, desert riparian and stream, riparian mesquite bosque, and desert springs. This effort piloted a new Habitat Climate Change Vulnerability Index (HCCVI) approach being developed by NatureServe, as a companion to an existing index for species. The project... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arizona, BMP, Baja California, California, English, All tags... GIS, Mexico, Nevada, OHV, Sonora, US, Utah, agriculture, assessment, biodiversity, bird, climate, connectivity, contamination, development, ecoregion, energy, erosion, fire, fish, grassland, grazing, groundwater, invasive, invertebrate, mammal, management, map, mining, model, monitoring, plan, plant, priority, protected area, rare, recreation, renewable, reptile, research, resilience, restoration, riparian, river, road, scrub, shrub, soil, spring, stream, threat, vegetation, water, watershed, wildlife, Fewer tags Ecosystem-based river basin management: Its approach and policy-level application P>1. Habitats are often connected by fluxes of energy and nutrients across their boundaries. For example, headwater streams are linked to surrounding riparian vegetation through invertebrate and leaf litter inputs, and there is evidence that consumers in downstream habitats are subsidised by resources flowing from headwater systems. However, the strength of these linkages and the manner in which potential headwater subsidies vary along climatic and disturbance gradients are unknown. 2. We quantified the downstream transport of invertebrates, organic matter and inorganic sediment from 60 fishless headwater streams in the Wenatchee River Basin located on the eastern slope of the Cascade Range in Washington, U.S.A.... Categories: Publication; Types: Citation; Tags: Ecoregion, headwater, influence, invertebrate, land-use, All tags... streams, transport, Fewer tags The ecosystem, energy and human values P>1. Habitats are often connected by fluxes of energy and nutrients across their boundaries. For example, headwater streams are linked to surrounding riparian vegetation through invertebrate and leaf litter inputs, and there is evidence that consumers in downstream habitats are subsidised by resources flowing from headwater systems. However, the strength of these linkages and the manner in which potential headwater subsidies vary along climatic and disturbance gradients are unknown. 2. We quantified the downstream transport of invertebrates, organic matter and inorganic sediment from 60 fishless headwater streams in the Wenatchee River Basin located on the eastern slope of the Cascade Range in Washington, U.S.A.... Categories: Publication; Types: Citation; Tags: Ecoregion, headwater, influence, invertebrate, land-use, All tags... streams, transport, Fewer tags Temporal changes in aquatic-invertebrate and fish assemblages in streams of the north-central and northeastern US Many management agencies seek to evaluate temporal changes in aquatic assemblages at monitoring sites, but few have sites with ecological time series that are long enough for this purpose. Trends in aquatic-invertebrate and fish assemblage composition were assessed at 27 long-term monitoring sites in the north-central and northeastern United States. Temporal changes were identified using serial trend analysis. Sites with significant serial trends were further evaluated by relating explanatory environmental variables (e.g., streamflow, habitat, and water chemistry) to changes in assemblage composition. Significant trends were found at 19 of 27 study sites; however, differences in the sensitivity of the aquatic fauna... Categories: Publication; Types: Citation; Tags: Data Visualization & Tools, Ecological trends, Fish, Invertebrate, Land-use, All tags... Landscapes, Metrics, Northeast CASC, Other Landscapes, Science Tools For Managers, Time series, Fewer tags Assessment of Grassland Ecosystem Conditions in the Southwestern United States: Wildlife and Fish, Volume 2 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... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: BMP, Chihuahuan Desert, English, Sonoran Desert, agriculture, All tags... amphibian, assessment, biodiversity, bird, climate, condition, connectivity, contamination, development, endangered, erosion, fire, fish, grassland, grazing, groundwater, invasive, invertebrate, land cover, mammal, management, map, mining, monitoring, ownership, plan, priority, program, protected area, rare, recreation, reptile, research, restoration, riparian, river, road, scrub, shrub, soil, spring, stream, terrestrial, threat, threatened, vegetation, vulnerability, water, watershed, wetland, wildlife, Fewer tags Assessment of Grassland Ecosystem Conditions in the Southwestern United States, Volume 1 This report is volume 1 of a two-volume ecological assessment of grassland ecosystems in the Southwestern United States. Broadscale 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 focuses on the ecology, types, conditions, and management practices of Southwestern grasslands. The second volume, due to be published in 2005, describes wildlife and fish species, their habitat requirements, and species-specific management concerns, in Southwestern grasslands. This assessment is regional in... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: BMP, Chihuahuan Desert, English, GIS, OHV, All tags... Sonoran Desert, agriculture, amphibian, biodiversity, bird, climate, connectivity, contamination, cultural, development, endangered, energy, erosion, fire, fish, grassland, grazing, invasive, inventory, invertebrate, land cover, mammal, management, map, mining, model, monitoring, oil, ownership, plan, plant, priority, protected area, rare, recreation, reptile, research, resilience, restoration, riparian, road, scrub, shrub, soil, stream, threat, threatened, vegetation, vulnerability, water, watershed, wetland, wildlife, Fewer tags Nevada Springs Conservation Plan Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: amphibian, fish, invasive, inventory, invertebrate, All tags... plant, priority, rare, spring, wetland, Fewer tags