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Ecoregions of North America, featuring the 50 United States, the District of Columbia and the 5 inhabited territories. The following is a list of ecoregions in the United States as identified by the World Wide Fund for Nature (WWF). The United States is a megadiverse country with a high level of endemism across a wide variety of ecosystems.
2 Puget Lowland. 3 Willamette Valley. 111 Ahklun Mountains and Kilbuck Mountains. 113 Alaska Peninsula Mountains. 115 Cook Inlet. 119 Pacific Coastal Mountains. 120 Coastal Western Hemlock-Sitka Spruce Forests. The corresponding CEC ecoregion in Canada is called the Pacific Maritime Ecozone.
A bioregion is a geographical area, on land or at sea, defined not by administrative boundaries but by distinct characteristics such as plant and animal species, ecological systems, soils and landforms, human settlements and cultures those attributes give rise to, and topographic features such as watersheds. [1][2][3][4][5][6][7][8] The idea of ...
The Cascadia bioregion is the Pacific Northwest as defined through the watersheds of the Columbia, Fraser and Snake Rivers, as defined through the geology of the region. [1] It extends for more than 2,500 miles (4,000 km) from the Copper River in Southern Alaska, to Cape Mendocino, approximately 200 miles north of San Francisco, and east as far ...
Bioregionalism is a philosophy that suggests that political, cultural, and economic systems are more sustainable and just if they are organized around naturally defined areas called bioregions, similar to ecoregions. Bioregions are defined through physical and environmental features, including watershed boundaries and soil and terrain ...
The United States is part of North America. The environment of the United States comprises diverse biotas, climates, and geologies. This diversity leads to a number of different distinct regions and geographies in which human communities live. This includes a rich variety of species of animals, fungi, plants and other organisms.
U.S. Census Bureau regions and divisions. Since 1950, the United States Census Bureau defines four statistical regions, with nine divisions. [1] [2] The Census Bureau region definition is "widely used ... for data collection and analysis", [3] and is the most commonly used classification system.
The Northern Mexico bioregion includes the mild-winter to cold-winter deserts and xeric shrublands, warm temperate and subtropical pine and pine-oak forests, and Mediterranean climate ecoregions of the Mexican Plateau, Baja California peninsula, and the southwestern United States, bordered to the south by the Neotropical Trans-Mexican Volcanic ...