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Keystone species play a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and numbers of various other species in the community. Without keystone species, the ecosystem would be dramatically different or cease to exist altogether. Some ...
Robert Treat "Bob" Paine III (April 13, 1933 – June 13, 2016) was an American ecologist who spent most of his career at the University of Washington.Paine coined the keystone species [1] [2] [3] concept to explain the relationship between Pisaster ochraceus, a species of starfish, and Mytilus californianus, a species of mussel.
Some species, called a keystone species form a central supporting hub unique to their ecosystem. [131] The loss of such a species results in a collapse in ecosystem function, as well as the loss of coexisting species. [5] Keystone species are usually predators due to their ability to control the population of prey in their ecosystem. [131]
A keystone species is a species that is connected to a disproportionately large number of other species in the food-web. Keystone species have lower levels of biomass in the trophic pyramid relative to the importance of their role. The many connections that a keystone species holds means that it maintains the organization and structure of ...
The beaver is a keystone species, increasing biodiversity in its territory through creation of ponds and wetlands. [1] [2] As wetlands are formed and riparian habitats enlarged, aquatic plants colonize newly available watery habitat. Insect, invertebrate, fish, mammal, and bird diversities are also expanded. [3]
Eastern white pine, a cultural keystone species for the Kitcisakik Algonquin community. The white pine (Pinus strobus L.), found across northeastern North America, is a cultural keystone species for the Kitcisakik Algonquin community in Quebec. The tree is prevalent in legends and myths that are central to the culture, history, and identity of ...
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Clustering: the proportion of species that are directly linked to a focal species. A focal species in the middle of a cluster may be a keystone species, and its loss could have large effects on the network. Compartmentalization: the division of the network into relatively independent sub-networks.