2/8/2024 0 Comments California regions map![]() ![]() Level II divides the continent into 50 regions (Commission for Environmental Cooperation Working Group, 1997, map revised 2006). Level I is the coarsest level, dividing North America into 15 ecological regions. The relative importance of each characteristic varies from one ecological region to another regardless of the hierarchical level.Ī Roman numeral hierarchical scheme has been adopted for different levels of ecological regions. These phenomena include geology, physiography, vegetation, climate, soils, land use, wildlife, and hydrology. ![]() The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of the spatial patterns and the composition of biotic and abiotic phenomena that affect or reflect differences in ecosystem quality and integrity (Wiken, 1986 Omernik, 1987, 1995). It revises and subdivides an earlier national ecoregion map that was originally compiled at a smaller scale (Omernik, 1987 USEPA 2013). The California ecoregion map was compiled at a scale of 1:250,000. These general purpose regions are critical for structuring and implementing ecosystem management strategies across federal agencies, state agencies, and nongovernment organizations that are responsible for different types of resources within the same geographical areas (Omernik and others, 2000). ![]() By recognizing the spatial differences in the capacities and potentials of ecosystems, ecoregions stratify the environment by its probable response to disturbance (Bryce and others, 1999). They are designed 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 quantity of environmental resources. ![]()
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