Found 14 datasets matching filters.
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This map service displays Level III and Level IV Ecoregions of the United States and was created from ecoregion data obtained from the U.S. Environmental Protection Agency Office of Research and...
Search relevance: 1.00 | Views last month: 2 | Published on: 2026-01-27 -
These data identify the mean population growth rate and ratio change in abundance of common raven (Corvus corax; ravens) populations from 1966 through 2018, delineated by ecoregions defined by the...
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
Ecological Subsection mapping product for Bering Land Bridge National Preserve.
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-04 -
In 2015, the second of several Regional Stream Quality Assessments (RSQA) was done in the southeastern United States. The Southeast Stream Quality Assessment (SESQA) was a study by the U.S....
Search relevance: 1.00 | Views last month: 1 | Published on: 2026-03-03 -
This tabular data set represents the percent of United States Environmental protection Agency's (U.S. EPA) Level 3 Regions compiled for two spatial components of the NHDPlus version 2 data suite...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
These data identify the mean annual population growth rate and ratio change in abundance of common raven (Corvus corax; ravens) populations from 1966 through 2018.
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
The dataset was originally issued in 2007 by the USDA Forest Service Washington Office-Ecosystem Management Coordination staff. The Forest Carbon Plan ecoregions generally follow subsection...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-07-28 -
This data release provides output produced by a statistical, aridity threshold fire model for 11 extensively forested ecoregions in the western United States. We identified thresholds in...
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
In 2013, the first of several Regional Stream Quality Assessments (RSQA) was done in the Midwest United States. The Midwest Stream Quality Assessment (MSQA) was a collaborative study by the U.S....
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
The objective of this project is to develop a simple approach for estimating the marine survival and causes of trends in survival. Data is a summary of ecosystem indicators of coho salmon marine survival.
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-20 -
Data are from 1,000 river and stream sites across the conterminous US where consistent biological, chemical, physical and watershed data were gathered. The sites were selected using a probability...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-08-02 -
Over one half of the worlds fish production for human consumption currently comes from aquaculture, while wild fisheries yields are either stable or declining. Recurring threats from the...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-12-20 -
These data identify the mean annual population growth rate and ratio change in abundance of common raven (Corvus corax; ravens) populations from 1966 through 2018.
Search relevance: 1.00 | Views last month: 0 | Published on: 2026-03-03 -
This layer contains polygon features of Ecological Units for the state of California as described by ECOMAP (1993) "... mapped based on associations of those biotic and environmental factors that...
Search relevance: 1.00 | Views last month: 0 | Published on: 2025-07-29
