An ecoregion is a contiguous area characterized by well defined similarity in flora and fauna as well as geomorphology, climate and soils; ecoregions are generally relatively large geographic units on the order of 50,000 square kilometers or more. Ecoregions may be terrestrial or marine, and do not recognize any political boundaries or landscape alterations by humans. Generally an ecoregion is depicted by a geographic descriptor coupled with a biome identity, further articulating one or more specific climatic or dominant plant community appellations: for example, Chilean Mattoral or Madagascar Dry Deciduous Forests.
There are several alternative formal naming schemes for the Earth's ecoregions; one of the most widely used, developed by the World Wildlife Foundation, recognizes 867 separate ecoregions. Because of the very large scale of an ecoregion, the landscape is not monolithic, but may have pockets of ecological diversity; however, the ecoregion is defined by its preponderant vegetative, geological and meteorological composition. Correspondingly boundaries between regions are sometimes diffuse, resulting in a broad ecotone.
Chile has eight ecoregions that occur entirely or partly within its borders on the mainland and three ecorgions offshore:
Alberta Mountain forestsLast Updated on 2014-11-30 21:48:14
WWF Terrestrial Ecoregions Collection
The Alberta Mountain forests ecoregion lies entirely within Canada and almost fully within the province of Alberta, but hugs the Alberta-British Columbia border from Banff northward to Jasper and Kakwa. The ecoregion is classified within the Temperate Coniferous Forests biome.
Mean annual temperature in the Eastern Continental Ranges is 2.5°C, mean summer temperature is 12°C and mean winter temperature is -7.5°C. Precipitation increases from east to west and also with elevation, from 600-800 millimetres (mm) per year. Valley regions are marked by warm, dry summers and mild, snowy winters, and subalpine areas have cool, showery summers and cold, snowy winters.
This region covers the Rocky Mountains of Alberta, incorporating the eastern flanks of the Continental Ranges. The major peaks cluster... More »
Mississippi RiverLast Updated on 2014-11-29 22:15:22The Mississippi River drains the largest river basin in North America, and is one of the major rivers of the world.
The Mississippi River watershed is the fourth largest in the world, extending from the Allegheny Mountains in the east to the Rocky Mountains in the west. The watershed includes all or parts of 31 states and two Canadian provences. The watershed measures approximately 1.2 million square miles (3.1 million square kilometers), covering about 40% of the lower 48 states. The Mississippi drains most of the United States between the Appalachian Mountains in the east and the Rocky Mountains in the West.
The mainstream of the Mississippi River has headwaters rising at Lake Itasca, Minnesota and flows approximately 2340 miles (3765 km). Though the longest part of the river includes the the Missouri River which flows approximately 2540 miles (4088 km) before joining the... More »
Ecoregions of BangladeshLast Updated on 2014-10-19 17:45:45Bangladesh has five ecoregions:
Sundarbans freshwater swamp forests
Lower Gangetic Plains moist deciduous forests
Mizoram-Manipur-Kachin rain forests
Myanmar coastal rain forests
The ecoregion lies in the vast delta formed by the confluence of the Ganges, Brahmaputra, and Meghna rivers. The maze of mangrove channels extends across southern Bangladesh and India's West Bengal State.The Sundarbans Mangroves ecoregion is the world's largest mangrove ecosystem.
Named after the dominant mangrove species Heritiera fomes, locally known as sundri, this is the only mangrove ecoregion that harbors the Indo-Pacific region's largest predator, the tiger (Panthera tigris).
Unlike in other habitats, here tigers live and swim among the mangrove islands, where they hunt scarce prey such as chital deer (Cervus axis), barking deer (Muntiacus muntjak), wild... More »
Ecoregions of CanadaLast Updated on 2014-09-06 20:21:29
Canada has 50 ecoregions that occur entirely or partly within its borders as listed below and shown in the accompanying figure:
South Avalon-Burin oceanic barrens
Eastern Canadian forests
Newfoundland Highland forests
New England-Acadian forests
Gulf of St. Lawrence lowland forests
Eastern Great Lakes lowland forests
Southern Great Lakes forests
Eastern forest-boreal transition
Eastern Canadian Shield taiga
Torngat Mountain tundra
Low Arctic tundra
Middle Arctic tundra
High Arctic tundra
Davis Highlands tundra
Baffin coastal tundra
Southern Hudson Bay taiga
Central Canadian Shield forests
Western Great Lakes forests
Northern tall grasslands
Midwestern Canadian Shield forests
Northern Canadian Shield taiga
Mid-Continental Canadian forests
Canadian Aspen... More »
Eastern Carpathian beech forestsLast Updated on 2014-07-08 14:27:50Primeval beech forests of the Carpathians are comprised of ten reserves are in the eastern Carpathian Mountains, five clustered in eastern Slovakia and southwestern Ukraine near the Polish border, and five in southwest Ukraine near the point the mountains pass into Romania. These forests, classified as substantially primeval by the United Nations, are situated between 47°56’12”N to 49°05’10”N and 22°11’23”E to 24°23’35”E.
1908: First Ukrainian forest Natural Reserve established in Stuzhytsia;
1920s: Several Ukrainian beech forests became Protected Areas;
1968: The Carpathian Biosphere Reserve created by Soviet Council decree 568;
1977: The Eastern Carpathian National Park established in Slovakia
1980: Karpatskiy National Park (50,303 ha)... More »
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