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