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Ecoregions of North America, featuring the 50 United States, the District of Columbia and the five inhabited territories. The following is a list of United States ecoregions 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.
The 1763 proclamation line is more or less similar to the Eastern Continental Divide, extending from Georgia in the south to the divide's northern terminus near the middle of the north border of Pennsylvania, where it intersects the northeasterly St. Lawrence Divide, and extends further through New England.
Information included in the Atlas includes accurate, seamless maps, documentation, and geospatial data that crosses political borders. This data is displayed as series of interactive map layers in an easy to use map viewer format. Most layers in the North American Environmental Atlas are at a scale of 1:1:10,000,000 or finer. [citation needed]
To qualify as a biodiversity hotspot on Myers' 2000 edition of the hotspot map, a region must meet two strict criteria: it must contain at least 1,500 species of vascular plants (more than 0.5% of the world's total) as endemics, and it has to have lost at least 70% of its primary vegetation. [6] Globally, 36 zones qualify under this definition. [7]
The standard reference is The Deciduous Forest of Eastern North America. [4] The adjoining forests in Canada are generally referred to as the Mixedwood Plains Ecozone or the Great Lakes-St.Lawrence Forest Region. 32 Texas Blackland Prairies; 33 East Central Texas Plains; 34 Western Gulf Coastal Plain; 36 Ouachita Mountains; 37 Arkansas Valley
These effects will lead to less biodiversity in the area, which is one of the main combatant factors that biota have against climate change. As the effects of climate change continue to develop, North American Deserts will be increasingly affected, leading worsening biodiversity loss and decreases in the ecoregion productivity. Deserts are one ...
Pages in category "Hotspots of North America" The following 6 pages are in this category, out of 6 total. This list may not reflect recent changes. A. Anahim hotspot; B.
Territorial evolution of North America of non-native nation states from 1750 to 2008. The 1763 Treaty of Paris ended the major war known by Americans as the French and Indian War and by Canadians as the Seven Years' War / Guerre de Sept Ans, or by French-Canadians, La Guerre de la Conquête.