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In northern Idaho rainforest patches along the Clearwater River, a mean annual temperature of 5.4°C has been measured. [8] In British Columbian Inland rainforest areas, the mean annual temperature ranges from 2.7 to 4.5°C. In the coldest months, the mean temperature of these region lies between -8 and -9.5°C. [9]
They are owned collectively by the American people through the federal government and managed by the United States Forest Service, a division of the United States Department of Agriculture. The U.S. Forest Service is also a forestry research organization which provides financial assistance to state and local forestry industry. [15]
A portion of the temperate rain forest region of North America, the largest area of temperate zone rainforests on the planet, is the Pacific temperate rain forests ecoregion, which occur on west-facing coastal mountains along the Pacific coast of North America, from Kodiak Island in Alaska to northern California, and are part of the Nearctic realm.
In addition, Puerto Rico contains El Yunque National Forest, the only tropical U.S. rainforest. Alaska has the most national forest land, with 21.9 million acres (8.9 million ha), followed by California (20.8 million acres, 8.4 million ha) and Idaho (20.4 million acres, 8.3 million ha).
Tropical rainforests exist in Southeast Asia (from Myanmar (Burma)) to the Philippines, Malaysia, Indonesia, Papua New Guinea and Sri Lanka; also in Sub-Saharan Africa from the Cameroon to the Congo (Congo Rainforest), South America (e.g. the Amazon rainforest), Central America (e.g. Bosawás, the southern Yucatán Peninsula-El Peten-Belize ...
The second largest temperate rainforest in the world and the only one in South America, the Valdivian Temperate Rainforest (often referred to as Selva Valdiviana) sits between the Andes and the ...
This idea applies to all areas but has unique outcomes in Tropical Wet Rain Forests in North America specifically. Tropical Wet Rainforests have an excess of vegetation, compared to many other ecoregion types such as savannahs, and therefore have a much slower drainage rate than other ecosystems. [7]
Humans have shaped the rainforest environment for the last 12,000 years through activities such as hunting and agriculture. [16] These impacts grew following European colonization, which brought about significant changes, including the decline of native populations, land use alterations, and the introduction of non-native species. [16]
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