Folders: ROOT > ScienceBase Catalog > USGS Gap Analysis Project (GAP) > USGS Aquatic Gap Analysis Project ( Show direct descendants )
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Fig. 1. Scatter plot of a fish indicator versus one landscape stress, showing upper (purple) and lower (red) condition thresholds and the scoring system (colored bars and numbers at bottom).
This item contains a service link that returns the count of catchments having moderate risk to habitat degradation in the Northeastern States, which can be used to populate the Current Degradation Chart. In addition, it returns the geometry for the selected catchments, which can be used to spatially display the location of the catchments having moderate disturbance.
The United States is home to a diverse array of freshwater and marine fish, shellfish, and other aquatic species. More than 3,000 species of fish inhabit America’s streams, rivers, lakes, reservoirs, marshes, swamps, bays, estuaries, coral reefs, seagrass beds, shallow water banks, deep ocean canyons, and other watery habitats. The United States is also home to over 300 million people, all depending on the same water that fish depend upon. Healthy habitats are essential for sustainable fish populations. Unfortunately, in many places around the United States, fish and the habitats on which they depend are in decline. Almost 40 percent of the nation’s freshwater fish species are considered at risk or vulnerable to...
Fisheries managers and researchers working on local, state, and regional projects routinely gather large quantities of fisheries data. Data collected as part of these projects are often made available to the public via specialized web interfaces specific to the project. This approach serves the immediate need to make the data publically available; however, the visibility and thus long term viability of these datasets can be improved by taking a longer term and larger scale view. In 2008, the USGS National Biological Information Infrastructure embarked on a pilot project, the National Fisheries Data Infrastructure (NFDI), which was subsequently adopted by the Science and Data Committee for use in the National Fish...
For rivers in the lower 48 states, habitat condition was estimated by analyzing how strongly a range of human disturbances to habitat affects river fish in all parts of the country, using the logic that fish reflect the quality of the habitat where they live. For each disturbance type, we identified the disturbance level at which fish with a strong reliance on high quality habitats showed marked declines in abundance, and where these fish disappeared from the ecosystem altogether. This information was used to score streams according to their most likely condition given the values of disturbances in each location. In the maps, streams that are expected to be in good condition have a low or very low risk of current...
Using a combination of tabular and spatial data queries, we identified 129,773 flowlines in the hydrological framework of the National Hydrography Dataset Plus Version 1 (NHDPlusV1) that were created due to breaks in flowlines resulting from flowline intersection with quadrangle map boundaries. We found instances of this occurring in all 18 processing units of the NHDPlusV1 dataset. To aid in managing for this characteristic of the NHDPlus, we developed this EcoReach table (nhdplusv1_ecoreachv2.0.csv) that assigns all flowlines into units that are representative of ecological stream reaches. These "ecological stream reaches" may be defined by: stream origins, stream confluences, lake or reservoir inflows or outflows,...
Figure 1: This chart displays the Risk of Current Degradation for catchments in the Northeastern United States.
This item contains a service link that returns the count of catchments having very low risk to habitat degradation in the Northeastern States, which can be used to populate the Current Degradation Chart. In addition, it returns the geometry for the selected catchments, which can be used to spatially display the location of the catchments having very low disturbance.
TIGER 2016 State Boundaries, this is a test item that shows how we can use code to incorporate data into the BIS
This product was updated. The newest version can be found here: https://www.sciencebase.gov/catalog/item/546a1950e4b04d4b7dbde8f1. Using a combination of tabular and spatial data queries, we identified 121,207 flowlines in the hydrological framework of the NHDPlusV1 that were created due to breaks in flowlines resulting from flowline intersection with quadrangle map boundaries. We found instances of this occurring in all 18 processing units of the NHDPlusV1 dataset. To aid in managing for this characteristic of the NHDPlus, we developed this EcoReach table (nhdplusv1_ecoreach.csv) that assigns all flowlines into units that are representative of ecological stream reaches. Using similar techniques as described in...
A photo of two Brook Trout taken by Robert Michelson.
Citation: Esselman, P., D. Infante, L. Wang, A. Cooper, D. Wieferich, Y. Tsang, D. Thornbrugh, W. Taylor. 2013. Regional fish community indicators of landscape disturbance to catchments of the conterminous United States. Ecological Indicators 26:163-173. Abstract: Biological assessments of river conditions are increasingly conducted at regional and continental scales that match the extent of large-scale river management efforts. Multimetric indices composed of biological community indicators are commonly used to assess ecological condition and indices have recently been applied in large regions. Methods for large-scale multimetric index creation emphasize repeatability, comparability across regions, and objective...
This geodatabase contains a comparable set of community fish samples from 12 sources, spanning the conterminous United States. The data were compiled through efforts of Michigan State University for the 2010 National Fish Habitat Action Plan (NFHAP) and with support from the U.S. Fish and Wildlife Service (USFWS) and U.S. Geological Survey (USGS) Aquatic GAP Program. All fish sample locations were verified and linked to flowlines of the National Hydrography Dataset Plus Version 1 (NHDPlusV1) using the COMID identifier. Fish records were provided by the following organizations and agencies: USGS, U.S. Environmental Protection Agency (EPA), Connecticut Department of Environmental Protection, Iowa Department of Natural...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: 2010 National Assessment,
2010 National Assessment,
Abundance (organisms),
Alabama,
Arizona,
Using a combination of tabular and spatial data queries, we identified 133,111 flowlines in the National Hydrography Dataset Plus Version 2 (NHDPlusV2) that were created due to breaks in flowlines resulting from flowline intersection with quadrangle map boundaries. We found instances of this occurring in all 18 processing units of the NHDplusV2 dataset. To aid in managing for this characteristic of the NHDPlus, this EcoReach table (nhdplusv2_ecoreachv2.0.csv) assigns all flowlines into units that are representative of ecological stream reaches. These "ecological stream reaches" may be defined by: stream origins, stream confluences, lake or reservoir inflows or outflows, and/or stream outflows (described in more...
This product was updated. The newest version can be found here: https://www.sciencebase.gov/catalog/item/546a1937e4b04d4b7dbde8ef. Using a combination of tabular and spatial data queries, we identified 124,233 flowlines in the NHDPlusV2 that were created due to breaks in flowlines resulting from flowline intersection with quadrangle map boundaries. We found instances of this occurring in all 18 processing units of the NHDplusV2 dataset. To aid in managing for this characteristic of the NHDPlus, this EcoReach table (nhdplusv2_ecoreach.csv) assigns all flowlines into units that are representative of ecological stream reaches. Using techniques described in this metadata a similar table was developed for the NHDPlusV1...
This geodatabase contains landscape factors representing human disturbances summarized to local and network catchments of river reaches throughout the conterminous U.S. They include land uses, population density, roads, dams, mines, and point-source pollution sites. The source datasets that were compiled and attributed to catchments were identified as being: (1) meaningful for assessing fish habitat; (2) consistent across the entire study area in the way that they were assembled; (3) representative of conditions in the past 10 years, and (4) of sufficient spatial resolution that they could be used to make valid comparisons among local catchment units. In this data set, these variables are linked to the catchments...
This item contains a service link that returns the count of catchments having very high risk to habitat degradation in the Northeastern States, which can be used to populate the Current Degradation Chart. In addition, it returns the geometry for the selected catchments, which can be used to spatially display the location of the catchments having very high disturbance.
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