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Illinois ecoregion map prepared by the USEPA. The list of ecoregions in Illinois are lists of terrestrial ecoregions (see also, ecosystem) of the United States' State of Illinois, as defined separately by the United States Environmental Protection Agency (USEPA), and by the World Wildlife Fund.
Image of the Aral Sea in 1989 (left) and 2014. The Aral Sea is an example of a Collapsed (CO) ecosystem. [1] (image source: NASA)The Red List of Ecosystems was created to carry out assessments of biodiversity at a level of biological organization above species. [2]
An ecosystem (or ecological system) is a system formed by organisms in interaction with their environment. [2]: 458 The biotic and abiotic components are linked together through nutrient cycles and energy flows.
Coral reefs are one of the most well-known marine ecosystems in the world, with the largest being the Great Barrier Reef.These reefs are composed of large coral colonies of a variety of species living together.
The El Vizcaíno Biosphere Reserve, created in 1988, [1] is located in Mulegé Municipality in northern Baja California Sur, at the center of the Baja California Peninsula between the Pacific Ocean and the Gulf of California.
The dry forest area of southwestern Puerto Rico protected under the jurisdiction of the Guánica Dry Forest was first established in 1919 as a forest reserve. The United Nations recognized the ecological value of the forest in 1981 when it was designated a Biosphere Reserve, the second in Puerto Rico after El Yunque National Forest (then called the Caribbean National Forest).
Beavers are the prototypical ecosystem engineer because of the effects their dams have on channel flow, geomorphology, and ecology. Kelp are autogenic ecosystem engineers, by building the necessary structure for kelp forests.
With four main ecosystems (forest, savanna grassland, freshwater, marine and coastal), Senegal has a wide diversity of plants and animals. However, increases in human activities and changes in weather patterns which include increased deficits in rainfall, are impacting and degrading the natural habitats.