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A keystone species is a species that has a disproportionately large effect on its natural environment relative to its abundance. The concept was introduced in 1969 by the zoologist Robert T. Paine. Keystone species play a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and ...
A cultural keystone species is one which is of exceptional significance to a particular culture or a people. Such species can be identified by their prevalence in language, cultural practices (e.g. ceremonies), traditions, diet, medicines, material items, and histories of a community. [1][2][3] These species influence social systems and culture ...
Facilitation cascades occur when prevalent foundation species, [4] or less abundant but ecologically important keystone species, [5] are involved in a hierarchy of positive interactions and consist of a primary facilitator which positively affects one or more secondary facilitators which support a suite of beneficiary species.
An ecosystem engineer is any species that creates, significantly modifies, maintains or destroys a habitat. These organisms can have a large impact on species richness and landscape-level heterogeneity of an area. [1] As a result, ecosystem engineers are important for maintaining the health and stability of the environment they are living in.
The two species share the same ecological niche, and are thus in competition with each other. Interspecific competition, in ecology, is a form of competition in which individuals of different species compete for the same resources in an ecosystem (e.g. food or living space). This can be contrasted with mutualism, a type of symbiosis.
Robert T. Paine (zoologist) 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 ...
The ecology of the Great Plains is diverse, largely owing to their great size. Differences in rainfall, elevation, and latitude create a variety of habitats including short grass, mixed grass, and tall-grass prairies, and riparian ecosystems. [1] The Great Plains extend from Mexico in the south through the central United States to central Canada.
By analyzing network structures, one can determine keystone species that are of particular importance. A different class of keystone species is what are termed 'ecosystem engineers'. Certain organisms alter the environment so drastically that it affects many interactions that take place within a habitat.
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