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All recently modified items, latest first.
Landscape Capability for American Oystercatcher, Version 3.0, Northeast
This dataset depicts the potential capability of the landscape throughout the Northeastern United States to provide habitat for American Oystercatcher, during the breeding season, based on environmental conditions existing in approximately 2010. Landscape capability integrates factors influencing climate suitability, habitat capability, and other biogeographic factors affecting the species’ prevalence in the area.
Northern Diamondback Terrapin Documented Occurrences, Northeastern U.S.
This point layer represents documented occurrences of the northern diamondback terrapin (Malaclemys terrapin terrapin) from Massachusetts in the north to Virginia in the south. Multiple data sources were used to compile this data: for specific source information, consult the final report of the Northern Diamondback Terrapin Regional Conservation Strategy. This data set exists as three separate layers: points, lines, and polygons. Compilation of this data set began in 2015 and was finalized on March 2, 2015 by the Conserve Wildlife Foundation of New Jersey.
Landscape Capability for American Woodcock, Version 2.0, Northeast
This dataset depicts the potential capability of the landscape throughout the Northeastern United States to provide habitat for American Woodcock, during the breeding season, based on environmental conditions existing in approximately 2010. Landscape capability integrates factors influencing climate suitability, habitat capability, and other biogeographic factors affecting the species’ prevalence in the area.
Landscape Capability for Bicknell's Thrush, Version 2.1, Northeast
This dataset depicts the potential capability of the landscape throughout the Northeastern United States to provide habitat for Bicknell’s Thrush, during the breeding season, based on environmental conditions existing in approximately 2010. Landscape capability integrates factors influencing climate suitability, habitat capability, and other biogeographic factors affecting the species’ prevalence in the area.
Landscape Capability for Blackburnian Warbler, Version 2.0, Northeast
This dataset depicts the potential capability of the landscape throughout the Northeastern United States to provide habitat for Blackburnian Warbler, during the breeding season, based on environmental conditions existing in approximately 2010. Landscape capability integrates factors influencing climate suitability, habitat capability, and other biogeographic factors affecting the species’ prevalence in the area.
Landscape Capability for Snowy Egret, Version 3.0, Northeast U.S.
This dataset depicts the potential capability of the landscape throughout the Northeastern United States to provide habitat for Snowy Egret, during the breeding season, based on environmental conditions existing in approximately 2010. Landscape capability integrates factors influencing climate suitability, habitat capability, and other biogeographic factors affecting the species’ prevalence in the area.
Northatlantic Wildlife Species Models
Representative species models developed by Bill DeLuca with the Designing Sustainable Landscapes project out of the University of Massachusetts, Amherst.
Terrestrial
 
Terrestrial Habitat Map, Northern Appalachians
 
Terrestrial Habitat Map for the Northeast US and Atlantic Canada
This is a 30 meter grid that maps upland and wetland wildlife habitats/ecological systems for the Northeastern US, including all 13 states from Maine to Virginia, west to New York, Pennsylvania and West Virginia, and for the Maritime provinces of Canada (Nova Scotia, Prince Edward Island, and New Brunswick) and southeastern Quebec. Mapped habitat types are drawn from the Northeastern Terrestrial Habitat Classification System (NETHCS) and from some ecological system types identifed by Canadian ecologists as being unique to Canada. The NETHCS is based on NatureServe’s Ecological Systems Classification, augmented with additional information from individual state wildlife classifications and other information specific to wildlife managers. A terrestrial ecological system is defined as a mosaic of plant community types that tend to co-occur within landscapes with similar ecological processes, substrates, and/or environmental gradients, in a pattern that repeats itself across landscapes. Systems occur at various scales, from "matrix" forested systems of thousands of hectares to small patch systems, such as cliffs, basin wetlands, or barrens on a particular bedrock type, of a hectare or 2.
Substrate Mobility, Northeast
Substrate mobility measures the realized mobility of the physical substrate, due to both substrate composition (i.e. sand) and exposure to forces (wind and water) that transport material. This is an important attribute of certain dynamic systems (e.g., coastal dune systems) and is given as an index of mobility (1=stable , 10=highly mobile, values 6, 7, 8, and 10 do not occur in the Northeast region). Substrate mobility was derived from a custom algorithm based on the ESMplus and National Land Cover Database (NLCD) classes and National Wetlands Inventory (NWI) polygons.
State Boundaries, Northeast
This dataset represents the thirteen Northeast states and the District of Columbia of the United States. It provides detailed boundaries that are consistent with the tract and county data sets and are effective at regional and state levels
Soil, pH, Northeast
Soil pH measures acidity, which affects nutrient uptake by plants. The most common soil laboratory measurement of pH is the 1:1 water method. A crushed soil sample is mixed with an equal amount of water, and a measurement is made of the suspension. The dataset was derived from the following source: -U.S. Department of Agriculture, Natural Resources Conservation Service (NRCS). This data set consists of general soil association units. It was developed by the National Cooperative Soil Survey and supersedes the State Soil Geographic (STATSGO) data set published in 1994. It consists of a broad based inventory of soils and nonsoil areas that occur in a repeatable pattern on the landscape and that can be cartographically shown at the scale mapped. The data set was created by generalizing more detailed soil survey maps. Where more detailed soil survey maps were not available, data on geology, topography, vegetation, and climate were assembled, together with Land Remote Sensing Satellite (LANDSAT) images. Soils of like areas were studied, and the probable classification and extent of the soils were determined.
Soil, Available Water Supply, Northeast
Available water supply (AWS) is the total volume of water (in centimeters) that should be available to plants when the soil, inclusive of rock fragments, is at field capacity. AWS is calculated as the available water capacity times the thickness of each soil horizon to a specified depth (25 cm). The composition of the each component in the map unit is recorded as a percentage. A composition of 60 indicates that the component typically makes an approximately 60 percent of the the map unit. A weighted average aggregation method of all component values was computed, with percent composition as the weighing factor.
Soil - Depth to Restrictive Layer, Northeast
Soil depth (cm) affects communities primarily because shallow soils (usually on steep slopes or ridgetops) limit deep-rooted plants. A "restrictive layer" is a nearly continuous layer that has one or more physical, chemical, or thermal properties that significantly impede the movement of water and air through the soil or that restrict roots or otherwise provide an unfavorable root environment. if no restrictive layer is described in a map unit, it is represented by the ">200' depth class, This attribute is actually recorded as three separate values in the database. A low value and a high value indicate the range of this attribute for the soil component. A "representative" value indicates the expected value of this attribute for the component. For this soil property, only the representative value is used. A weighted average aggregation method was used to aggregate soil components
Percent Canopy Cover, 2001, Northeast
The percent tree canopy layer quantifies per pixel tree canopy fraction as a continuous variable from 1 to 100 percent. The file is an 8 Bit continuous data file that will contain values from 0 to 255 when displayed in a software package. The value of '127' is a 'No Data' value applied to areas outside of the modeled percent tree canopy extent.
North Atlantic Landscape Conservation Cooperative's Ecoregion Boundary
This dataset represents the North Atlantic LCC's ecoregion boundary. Landscape conservation cooperatives (LCCs) are conservation-science partnerships between the U.S. Fish and Wildlife Service, U.S. Geological Survey (USGS), and other federal agencies, states, tribes, NGOs, universities and stakeholders within a geographically defined area. They inform resource management decisions to address national-scale stressors-including habitat fragmentation, genetic isolation, spread of invasive species, and water scarcity-all of which are accelerated by climate change.
Landforms, Northern Appalachians
Landforms are a component of the Ecological Land Units (ELUs), used in The Nature Conservancy Eastern Division's ecoregional planning processes. A "landform" is any physical, recognizable form or feature on the earth's surface that has a characteristic shape and that is produced by natural causes (USDA Natural Resources Conservation Service). This dataset was developed as part of "Resilient Sites for Terrestrial Conservation in the Northeast and Mid-Atlantic region"
Land Cover, 2011
The National Land Cover Database (NLCD) 2011 was created through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. NLCD 2011 is the most up-to-date iteration of the National Land Cover Database, the definitive Landsat-based, 30 meter resolution land cover database for the Nation, clipped to the Northeast. The data in NLCD 2011 are completely integrated with NLCD 2001 (2011 Edition) and NLCD 2006 (2011 Edition). Also, as part of the NLCD 2011 project, NLCD 2001 and 2006 land cover and impervious data products have been revised and reissued (2011 Edition) to provide full compatibility with the new NLCD 2011 products. This dataset was created on a path/row basis and mosaicked to create a seamless national product.
Land Cover, 2006, Northeast
The National Land Cover Database (NLCD) 2006 was created through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. NLCD 2006 is designed to provide the user both updated land cover data and additional information that can be used to identify the pattern, nature, and magnitude of changes occurring between 2001 and 2006 for the conterminous United States at medium spatial resolution.