Skip to main content
Advanced Search

Filters: Tags: metrics (X)

34 results (167ms)   

Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
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.
thumbnail
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...
thumbnail
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.
thumbnail
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.
thumbnail
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.
thumbnail
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset represents the soil depth to the water table in feet.
thumbnail
Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset includes a suite of soil metric for use in landscape ecology studies.
thumbnail
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.
thumbnail
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.
thumbnail
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.
thumbnail
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.
thumbnail
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.
thumbnail
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...
thumbnail
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.
thumbnail
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.
thumbnail
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.
thumbnail
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.
thumbnail
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...


map background search result map search result map Weighted average soil surface wind erodibility index for the western USA Topographic position indices for watersheds for the western USA Weighted average Mannings "n" surface roughness for the western USA Weighted average soil sodium absorption ratio for the western USA Weighted average soil surface horizon clay fraction for the western USA Weighted average soil salinity for the western USA Weighted average range site production for the western USA Weighted average net sediment delivery for the western USA Weighted average mass wasting susceptibility for the western USA Weighted average soil hydrologic group for the western USA Weighted average soil gypsum content for the western USA Weighted average soil fine gravel fraction (2 mm to 5 mm) for the western USA HUC 8 hydrologic units and soil metrics for the western USA Weighted average soil drainage for the western USA Weighted average soil cobble fraction (75 mm to 250 mm) for the western USA Weighted average soil clay fraction (<0.002 mm) for the western USA Weighted average boulder soil fraction (250 mm to 4000 mm) for the western USA Water-quality and stream-habitat metrics calculated for the National Water-Quality Assessment Program's Regional Stream Quality Assessment conducted in the southeast United States in support of ecological and habitat stressor models, 2014 Water-quality and stream-habitat metrics calculated for the National Water-Quality Assessment Program's Regional Stream Quality Assessment conducted in the southeast United States in support of ecological and habitat stressor models, 2014 Weighted average soil surface wind erodibility index for the western USA Topographic position indices for watersheds for the western USA Weighted average Mannings "n" surface roughness for the western USA Weighted average soil sodium absorption ratio for the western USA Weighted average soil surface horizon clay fraction for the western USA Weighted average soil salinity for the western USA Weighted average range site production for the western USA Weighted average net sediment delivery for the western USA Weighted average mass wasting susceptibility for the western USA Weighted average soil hydrologic group for the western USA Weighted average soil gypsum content for the western USA Weighted average soil fine gravel fraction (2 mm to 5 mm) for the western USA HUC 8 hydrologic units and soil metrics for the western USA Weighted average soil drainage for the western USA Weighted average soil cobble fraction (75 mm to 250 mm) for the western USA Weighted average soil clay fraction (<0.002 mm) for the western USA Weighted average boulder soil fraction (250 mm to 4000 mm) for the western USA