Data/hora: 11/06/2024 16:11:07

Provedor de dados: | 7
País: | Canada
Título: | Linking Keystone Species and Functional Groups: A New Operational Definition of the Keystone Species Concept
Autores: | Davic, Robert D; Ohio Environmental Protection Agency; r_davic@yahoo.com.
Data: | 2003-06-12
Ano: | 2003
Palavras-chave: | Keystone species; Competition; Dominance; Feeding guilds; Functional groups; Power laws; Species diversity; Biomass dominance.
Resumo: | 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.
Tipo: | Peer-Reviewed Reports
Idioma: | Inglês
Identificador: | vol7/iss1/resp11/
Editor: | Resilience Alliance
Formato: | text/html application/pdf
Fonte: | Ecology and Society; Vol. 7, No. 1 (2003)