6 datasets found
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Federal
Ecological community datasets used to evaluate the presence of trends in ecological communities in selected rivers and streams across the United States, 1992-2012 (output) recent views
Department of the Interior —
In 1991, the U.S. Geological Survey (USGS) began a study of more than 50 major river basins across the Nation as part of the National Water-Quality Assessment (NAWQA)... -
Federal
Datasets used to evaluate the effects of antecedent streamflow and sample timing on trend assessments of fish, invertebrate and diatom communities across the United States, 2002-12 (output) recent views
Department of the Interior —
Detecting trends in biological attributes is central to many stream monitoring programs; however, understanding how natural variability in environmental factors... -
Federal
Sample locations and total number of species found at each station from Pellegrino and Hubbard (1983) recent views
Department of the Interior —
This GIS layer provides detailed information from Pellegrino and Hubbard (1983). It shows the sample locations and provides a summary of the total number of species... -
Federal
Samples collected by P.L. McCall (1975) recent views
Department of the Interior —
This GIS layer provides the location where samples were taken in a survey conducted by P.L. McCall (1975) -
Federal
Samples collected by H. L. Sanders (1956) recent views
Department of the Interior —
This GIS layer provides the location where samples were taken in a survey conducted by H.L. Sanders (1956) -
Federal
Detailed analysis of 35 most common species found in Long Island Sound benthic communities recent views
Department of the Interior —
This GIS layer provides the location where samples from Pellegrino and Hubbard were summarized to provide detailed analysis of 35 common species found in Long Island...
6 datasets found