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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 ...
Central America is distinct from the remainder of North America in being a tropical region, part of the Neotropical realm, whose flora and fauna display a strong South American influence. The rest of North America is mostly subtropical or temperate, belongs to the Nearctic realm, and has far fewer species of South American origin.
The West Siberian broadleaf and mixed forests, also known as the Western Siberian hemiboreal forests, is an ecoregion (WWF ID: PA0444) in Russia. It consists of a thin band of mixed forest along the southernmost edge of the West Siberian taiga (coniferous forests) in Western Siberia, and north of the forest steppe belt.
Lying in the Asia-Australian transition zone near Wallacea, the region's flora and fauna include Asiatic, Australian, and endemic species. [citation needed] The region is 75% forest and has a high degree of biodiversity. The island has an estimated 16,000 species of plants, 124 genera of which are endemic.
Over 300 species of the region's flora and fauna are threatened, 107 of which are classified as critically endangered. The underlying problems are deforestation , which is estimated by FAO at 1.2% per year in Central America and Mexico combined, fragmentation of rainforests and the fact that 80% of the vegetation in Central America has already ...
The Angeles National Forest (ANF) of the U.S. Forest Service is located in the San Gabriel Mountains and Sierra Pelona Mountains, primarily within Los Angeles County in southern California. The ANF manages a majority of the San Gabriel Mountains National Monument. The national forest was established in 1908, incorporating the first San ...
Nahanni National Park Reserve. Nahanni National Park Reserve in the Dehcho Region of the Northwest Territories, Canada, approximately 500 km (311 mi) west of Yellowknife, [4] protects a portion of the Mackenzie Mountains Natural Region. The centrepiece of the park is the South Nahanni River (Naha Dehé).
The flora of Australia comprises a vast assemblage of plant species estimated to over 21,000 vascular and 14,000 non-vascular plants, 250,000 species of fungi and over 3,000 lichens. The flora has strong affinities with the flora of Gondwana, and below the family level has a highly endemic angiosperm flora whose diversity was shaped by the ...