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The Greater Yellowstone Ecosystem (GYE) is one of the last remaining large, nearly intact ecosystems in the northern temperate zone of the Earth. [1] It is located within the northern Rocky Mountains , in areas of northwestern Wyoming , southwestern Montana , and eastern Idaho , and is about 22 million acres (89,000 km 2 ). [ 2 ]
Even in the Greater Yellowstone ecosystem, federal spruce budworm control relied on DDT, which accumulates in the food chain, causing eggshell thinning and reduced reproductive success in raptors. Six breeding pairs of American peregrine falcons were found in Colorado in the early 1970s.
The Greater Yellowstone Ecosystem is a uniquely large contiguous ecosystem of the northern Rocky Mountains, within areas of Montana, Wyoming, and Idaho in the northwestern United States. It includes the Yellowstone Caldera region, and is protected within 2 U.S. National Parks, 5 U.S. National Forests, and 10 Wilderness Areas.
Food chains (13 P) H. Habitats (12 C, 86 P) I. Industrial ecology (3 C, 73 P) L. Landscape ecology (4 C, 53 P) T. ... Greater Yellowstone Ecosystem; H. Habitat ...
Grizzly 399's death marks the second bear mortality this year caused from a vehicle strike in the Greater Yellowstone Ecosystem, according to the U.S. Fish & Wildlife Service.Between 2009 and 2023 ...
Grizzly bears. As of 2017, the grizzly bear (Ursus arctos horribilis) population within the Greater Yellowstone Ecosystem (Yellowstone and surrounding areas) was estimated at 718, with a minimum of 640 and a maximum of 796. [4]
Bison near a hot spring in Yellowstone. The Yellowstone bison herd roams the Greater Yellowstone Ecosystem. The bison herd is probably the oldest and largest public bison herd in the United States, estimated in 2020 to comprise 4,800 bison. [1] [2] [3] The bison are American bison of the Plains bison subspecies.
The Madison Range is the westernmost section of what is collectively referred to as the Greater Yellowstone Ecosystem. Most of the range lies within Beaverhead-Deerlodge and Gallatin National Forests. A small portion of the range has been further protected with the creation of the Lee Metcalf Wilderness.