Ecoregions are hierarchical, with Level IV being the most detailed and Level I defining the broadest classifications. Because of this hierarchy, Level IV features include appropriate codes and names for Levels III, II, and I. Likewise, Level III features contain Levels II and I, and Level II retains Level I information.

22/03/2021 · Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources. Level III and IV Ecoregions by State | US EPA Skip to main content

27/12/2007 · Level III and IV Ecoregion Descriptions / Mapping Issues Descriptions for each of the level III and level IV ecoregions of Michigan are listed below. They are presented in bullet format to facilitate regional comparisons and discussion of boundaries. In this EPA version of the Ecoregions of Michigan, we have considered the boundaries of existing

At Level III, the continental United States contains 104 regions and the conterminous U.S. has 84 ecoregions (U.S. EPA 2003). Level IV is a further subdivision of the Level III ecoregions. Explanation of the methods used to define the ecoregions are …

Description: Full Metadata This United States Environmental Protection Agency (US EPA) Shared Enterprise Geodata and Services (SEGS) web service displays Level III and Level IV Ecoregions of the United States and was created from ecoregion data obtained from the US EPA Office of Research and Development's Western Ecology Division. The original ecoregion data was …

16/04/2013 · Sign up. US EPA Ecoregions (Level IV) The U.S. Environmental Protection Agency (USEPA) provides the Ecoregions dataset to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and …