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Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil fine gravel fraction for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as percent by weight.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil cobble fraction for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as percent by weight.
Ecological indicators can be used to detect, diagnose, and summarize information about environmental problems. Despite these important values, few indicators have been systematically validated. Broad information on relevance, feasibility, estimates of variance, and interpretation of the ecological indicator is needed for initial validation. Comparisons of ecological indicators can only be accomplished if they are contrasted with standard published criteria. In this paper, information on the potential use of butterflies as indicators of riparian quality is provided within a standard framework. Additionally, data from riparian areas along the Arkansas, Green, Pecos, Rio Grande, and Yampa rivers were collected to validate...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Ecological Indicators,
assessment,
butterfly assemblages,
butterfly index,
ecological indicators,
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil surface horizon clay fraction for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as percent by weight of the <2 mm fraction.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the mass wasting susceptibility for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed on a scale of 1 to 3, representing low to high susceptibility to mass wasting based on slope morphology.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil net sediment delivery computed iteratively, cell by cell for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as kg/ha/year.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil depth to the water table in feet.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset includes a suite of soil metric for use in landscape ecology studies.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents topographic position indices for entire watershed the for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil hydrologic group (A through D) for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as percent by weight.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil clay fraction for the western USA. The values are expressed as percent by weight.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil surface wind erodibility index for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed in tons/acre/year.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the range site production for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as pounds/acre/year.
This data release includes metrics from the Regional Stream Quality Assessment (RSQA) from the Southeast Region for habitat stressors related to water-quality and habitat substrate. The goals of RSQA are to characterize multiple water-quality factors that are stressors to aquatic life ‐ contaminants, nutrients, sediment, and streamflow alteration – and to develop a better understanding of the relation of these stressors to ecological conditions in streams throughout the region. In order to characterize water-quality variables and stream-habitat measurements as an aggregation of multiple measurements over a sampling period, and in support of ecological stressor modelling, metrics (summary statistics or indices) were...
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil boulder fraction for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as percent by weight.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil gypsum content for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as percent by weight.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents Mannings "n" surface roughness coefficient for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil salinity for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as millimhos/cm of electrical conductivity.
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil sodium absorption ratio for the western USA. A weighted average was created for each HUC 8 watershed using approximate EMAP physical habitat substrate criteria. The values are expressed as percent by weight of the <2 mm fraction.
Coastal communities are uniquely vulnerable to sea-level rise (SLR) and severe storms such as hurricanes. These events enhance the dispersion and concentration of natural and anthropogenic chemicals and pathogenic microorganisms that could adversely affect the health and resilience of coastal communities and ecosystems in coming years. The U.S. Geological Survey has developed a strategy to define baseline and post-event sediment-bound environmental health (EH) stressors (hereafter referred to as the Sediment-Bound Contaminant Resiliency and Response [SCoRR] strategy). A tiered, multimetric approach has been developed to (1) identify and map contaminant sources and potential exposure pathways for human and ecological...
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