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Meanwhile, wolf packs often claim kills made by cougars, which has driven that species back out of valley hunting grounds to their more traditional mountainside territory. [45] The top-down effect of the reintroduction of an apex predator like the wolf on other flora and fauna in an ecosystem is an example of a trophic cascade.
William J. Ripple is a professor of ecology at Oregon State University in the Department of Forest Ecosystems and Society. He is best known for his research on terrestrial trophic cascades, particularly the role of the gray wolf (Canis lupus) in North America as an apex predator and a keystone species that shapes food webs and landscape structures via “top-down” pressures.
Trophic cascades are powerful indirect interactions that can control entire ecosystems, occurring when a trophic level in a food web is suppressed. For example, a top-down cascade will occur if predators are effective enough in predation to reduce the abundance, or alter the behavior of their prey, thereby releasing the next lower trophic level from predation (or herbivory if the intermediate ...
OR-7, also known as Journey, was a male gray wolf that was electronically tracked as he migrated from the Wallowa Mountains in the northeastern corner of the U.S. state of Oregon to the southern Cascade Range. After the wolf dispersed from his natal pack in 2011, he wandered generally southwest for more than 1,000 miles (1,600 km) through ...
International Wolf Center, there are two “widely recognized species of wolves in the world, the red and the gray.” Pictured is the American grey wolf (Canis lupus lycaon). ©Jearu/Shutterstock.com
Gray wolf in YellowStone National Park. A clear example of humans ecosynthesiszing would be through the introduction of a species to cause a trophic cascade, which is the result of indirect effects between nonadjacent trophic levels in a food chain or food web, such as the top predator in a food chain and a plant. [4]
'Teen Wolf's 'Wolf Pack': Everything to Know About the Show Read article According to Davis, his new series, based on the 2004 novel by Edo van Belkom , is more “sophisticated” compared to MTV ...
Recently another subspecies, the British Columbia wolf (Canis lupus columbianus), has established itself in the Cascade mountain wolf's past territory by following the Cascade Range through Washington and is now west of the Cascade Crest, [8] expanding across Oregon, [9] and into northern California to Lassen Peak, where in 2019 the Lassen pack produced 3 pups.