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A marine ecoregion is an ecoregion, or ecological region, of the oceans and seas identified and defined based on biogeographic characteristics. Introduction
California has two high deserts: the Mojave Desert and the Great Basin Desert. The Mojave Desert ecoregion is marked by the presence of Joshua trees. [3] The dry cold Great Basin desert of California consists of the Owens Valley, and is classified into Great Basin shrub steppe by the WWF, [4] and into the Central Basin and Range ecoregion by ...
Southern California Coastal–Baja California; Sacramento–San Joaquin; Marine ecoregions. Northern California [3] Southern California Bight; References
The following is a list of marine ecoregions, as defined by the WWF and The Nature Conservancy. The WWF/Nature Conservancy scheme groups the individual ecoregions into 12 marine realms, which represent the broad latitudinal divisions of polar, temperate, and tropical seas, with subdivisions based on ocean basins.
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In the United States, the EPA and the United States Geological Survey (USGS) are the principal federal agencies working with the CEC to define and map ecoregions. Ecoregions may be identified by similarities in geology, physiography, vegetation, climate, soils, land use, wildlife distributions, and hydrology.
Marine officers enforce commercial and sport fishing laws through spot checks on the water and on land. As of 2001, the Marine Region was patrolled by 63 officers piloting 65-foot, 54-foot, and 40-foot mono-hull patrol vessels and 18-foot and 24-foot rigid-hull inflatable patrol boats. Some rigid-hull inflatable boats are carried on the larger ...
The northern portion of the bay is a brackish estuary, consisting of a number of physical embayments which are dominated by both marine and fresh water fluxes. These geographic entities are, moving from saline to fresh (or west to east): San Pablo Bay , immediately north of the Central Bay; the Carquinez Strait , a narrow, deep channel leading ...