Record Display for the EPA National Library Catalog


Main Title Ecoregions: A Spatial Framework for Environmental Management.
Author Omernik, J. A. ;
CORP Author Corvallis Environmental Research Lab., OR.
Publisher 1993
Year Published 1993
Report Number EPA/600/A-94/170;
Stock Number PB94-209764
Additional Subjects Environment management ; Reprints ; Ecosystems ; Environmental monitoring ; Environmental quality ; Environmental protection ; Regional analysis ; Natural resources ; Biological diversity ; Bioindicators ; Indicator species ; Wildlife ; Vegetation ; Aquatic ecology ; Water resources ; Land use ; Climate ; Geomorphology ; Landforms ; Spatial distribution ; Ecoregions ; Biological criteria
Library Call Number Additional Info Location Last
NTIS  PB94-209764 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 34p
The recent interest in ecosystem management has brought an awareness of the need for an appropriate spatial framework for effectively structuring ecosystem management as well as the research, inventory, and monitoring of ecosystems and their components. This paper addresses the complexity of the task of defining ecological regions as well as the concept of regional reference sites, and provides an explanation of the development of the hierarchical ecoregion framework within the U.S. Environmental Protection Agency. Comparisons are made with other frameworks such as watersheds or basins. Also covered are the processes by which ecoregions are refined, subregions are defined, and sets of reference sites are selected via collaborative projects involving state and federal resource managers and EPA geographers. Although development of the ecoregion/reference site framework has to date been largely driven by the needs of state resource management agencies for developing biological criteria, and for setting water quality standards and lake management goals, support has grown for structuring biological risk assessment and ecosystem management in general.