Filters: Tags: Ecoregions (X) > Extensions: Shapefile (X)

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Biodiversity of salmonids summarized by Level IV ecoregion This dataset was developed for the Atlas of Pacific Salmon: The First Map-Based Status Assessment of Salmon in the North Pacific. (2005) Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Oncorhynchus gorbuscha, Oncorhynchus tschawytscha, Anadromous Resources, Chum, Coho , All tags... Ecoregions, Effects of changes in hydrologic regimes on anadromous fish, Freshwater Resources, NPLCC, North Pacific, North Pacific Landscape Conservation Cooperative, Oncorhynchus keta, Oncorhynchus kisutch, Oncorhynchus mykiss, Oncorhynchus nerka, Pink, Salmon, Sockeye, Species Distribution, steelhead, Fewer tags Aquatic Ecoregions of the Conterminous United States 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). Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquatic, Conterminous, Ecoregion, Ecoregions, Omernik, All tags... Omernik's, US, USA, United States, Fewer tags Study Boundary for the U.S. Geological Survey Midwest Stream Quality Assessment In 2013, the first of several Regional Stream Quality Assessments (RSQA) was done in the Midwest United States. The Midwest Stream Quality Assessment (MSQA) was a collaborative study by the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA), the USGS Columbia Environmental Research Center, and the U.S. Environmental Protection Agency (USEPA) National Rivers and Streams Assessment (NRSA). One of the objectives of the RSQA, and thus the MSQA, is to characterize the relationships between water-quality stressors and stream ecology and to determine the relative effects of these stressors on aquatic biota within the streams (U.S. Geological Survey, 2012). To meet this objective, a framework of fundamental... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Ecoregions, Geographic Information Systems, Geospatial Analysis, Geospatial Datasets, Illinois, All tags... Indiana, Iowa, Kansas, Kentucky, MSQA, Michigan, Midwest, Midwest Stream Quality Assessment, Minnesota, Missouri, National Water Quality Assessment, Nebraska, Ohio, RSQA, Regional Stream Quality Assessment, South Dakota, Study boundary, Wisconsin, inlandWaters, Fewer tags North America Ecological Regions This data set shows Level I, II, and III ecological regions (ecoregions) of North America, and is an update and revision of files developed by Canada, Mexico, and the United States of America in the late 1990’s in a cooperative project for the Commission for Environmental Cooperation (CEC). These revised ecological regions were developed in a meeting between representatives of the three nations and CEC in April 2006 in Newport, Oregon. Ecoregions are areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. The ecoregions in this data set are based on the premise that a hierarchy of ecological regions can be identified through the analysis of the patterns and... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Ecoregions, Ecosystem geography , Ecosystems, Regional ecology Mean Annual Population Growth Rate and Ratio Change in Abundance of Common Raven within Level II Ecoregions of the United States and Canada, 1966 - 2018 These data identify the mean annual population growth rate and ratio change in abundance of common raven (Corvus corax; ravens) populations from 1966 through 2018. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bayesian modeling, Canada, North America, United States, ecoregions, All tags... management, population trends, subsidized predator, wildlife, Fewer tags Mean Annual Population Growth Rate and Ratio Change in Abundance of Common Raven within Level I Ecoregions of the United States and Canada, 1966 - 2018 These data identify the mean annual population growth rate and ratio change in abundance of common raven (Corvus corax; ravens) populations from 1966 through 2018. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bayesian modeling, Canada, North America, United States, ecoregions, All tags... management, population trends, subsidized predator, wildlife, Fewer tags Ecoregions of Montana The second edition of "Ecoregions of Montana" (2002) revises many ecoregion polygon assignments that appeared in the first edition (Woods and others, 1999). These changes were made after research in Idaho (McGrath and others, 2002) recognized the Idaho Batholith as a separate level III ecoregion (Ecoregion 16), limited the Northern Rockies (15) to strongly marine-influenced areas, and transferred the Montana Valley and Foothill Prairies (formerly Ecoregion 16) to another level III ecoregion, the Middle Rockies (17). The second edition also modifies a few level IV ecoregion lines along Montana's western border so that ecoregions shared by Montana and Idaho will edge match. In addition, it updates ecoregion... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Ecoregions, MT, Montana Bailey's Ecoregions of the Conterminous United States This multi-tiered, broad-scale, hierarchical system of ecoregions is based on numerous environmental variables at each level. The first two tiers are based on climate, followed by climate and physiograpghy, and finally topography and soils. This data was used to provide a general description of the ecosystem geography. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bailey, Bailey's, Division, Domain, Ecoregion, All tags... Ecoregions, Province, Section, US, USA, United States, conterminous, Fewer tags