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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.
Among pack-living wolves, alpha wolves are the genetic parents of most cubs in the pack. Such access to mating females creates strong selective pressure for intra-sex competition. [21] Wolves show deference to the alpha pair in their pack by allowing them to allocate the distribution of food, typically preferentially feeding the youngest wolves.
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]
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 ...
A wolf hybrid kept as a family pet fatally attacked a 3-month-old in Alabama, officials said. The animal lived with the infant’s family in Chelsea, according to a news release from the Shelby ...
Wolf Pack is an American supernatural teen drama television series created by Jeff Davis for Paramount+, based on the 2004 book of the same name written by Edo van Belkom. The series premiered on Paramount+ on January 26 and concluded on March 16, 2023. [1] In January 2024, the series was canceled after one season. [2]
Video shows the intense moment a pack of wolves chases down a herd of more than 300 elk in Yellowstone National Park. The video follows the elk herd as it races away from wolves trailing behind it.
The presence of apex predators improves habitat quality and species viability down the food chain. This reintroduction could be a model for repairing ecosystems.