Linking Keystone Species and Functional Groups: A New Operational Definition of the Keystone Species Concept

Loading...
Thumbnail Image
Date
2003
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
"The concept of the 'keystone species' is redefined to allow for the a priori prediction of these species within ecosystems. A keystone species is held to be a strongly interacting species whose top-down effect on species diversity and competition is large relative to its biomass dominance within a functional group. This operational definition links the community importance of keystone species to a specific ecosystem process, e.g., the regulation of species diversity, within functional groups at lower trophic levels that are structured by competition for a limited resource. The a priori prediction of keystone species has applied value for the conservation of natural areas."
Description
Keywords
competition, power, diversity, biomass
Citation
Collections