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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.
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]
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 ...
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]
Raccoons (Procyon lotor) and skunks (Mephitis mephitis) are mesopredators.Here they share cat food in a suburban backyard.. The mesopredator release hypothesis is an ecological theory used to describe the interrelated population dynamics between apex predators and mesopredators within an ecosystem, such that a collapsing population of the former results in dramatically increased populations of ...
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 ...
The removal of top-level predators, often through human agency, can cause or disrupt trophic cascades. [ 15 ] [ 16 ] [ 17 ] For example, a reduction in the population of sperm whales , apex predators with a fractional trophic level of 4.7, by hunting has caused an increase in the population of the large squid, with trophic level over 4 ...
Facilitation cascades have far-reaching ecological impacts on the diversity and function of the ecosystem as the positive effects of a subset of organisms cascade through the community, as in trophic cascades. The effect size of facilitation cascades can rival or exceed that of trophic cascades, and the main distinction between the indirect ...