Nearctic ecozone

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The Nearctic is one of the eight terrestrial ecozones dividing the Earth's land surface.

The Nearctic ecozone covers most of North America, including Greenland and the highlands of Mexico. Southern Mexico, southern Florida, Central America, and the Caribbean islands are part of the Neotropic ecozone, together with South America.

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Major ecological regions

The World Wildlife Fund (WWF) divides the Nearctic into four Bioregions, defined as "geographic clusters of ecoregions that may span several habitat types, but have strong biogeographic affinities, particularly at taxonomic levels higher than the species level (genus, family)."

Canadian Shield

The Canadian Shield bioregion extends across the northern portion of the continent, from the Aleutian Islands to Newfoundland. It includes the Nearctic's Arctic Tundra and Boreal forest ecoregions.

In terms of floristic provinces, it is represented by part of the Canadian Province of the Circumboreal Region.

Eastern North America

The Eastern North America bioregion includes the Temperate broadleaf and mixed forests of the eastern United States and southeastern Canada, the Great Plains temperate grasslands of the central United States and south-central Canada, and the Temperate coniferous forests of the southeastern United States.

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