Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Functional diversity responses to changing species richness in reef fish communities

2008; Inter-Research; Volume: 364; Linguagem: Inglês

10.3354/meps07553

1616-1599

BS Halpern, Sergio R. Floeter,

Isotope Analysis in Ecology

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 364:147-156 (2008) - DOI: https://doi.org/10.3354/meps07553 Functional diversity responses to changing species richness in reef fish communities Benjamin S. Halpern1,*, Sergio R. Floeter1,2 1National Center for Ecological Analysis and Synthesis, 735 State Street, Santa Barbara, California 93101, USA 2Depto. de Ecologia e Zoologia – CCB, Universidade Federal de Santa Catarina, Flórianopolis, Santa Catarina 88010-970, Brazil *Email: halpern@nceas.ucsb.edu ABSTRACT: Functional diversity in biological communities is critical for providing the full suite of ecosystem functions and services, yet the relationship between functional diversity and species richness—how diversity is usually measured—remains largely unknown. Here we evaluate empirically how different measures of functional diversity change with increasing species richness across 36 Atlantic reef fish communities that vary greatly in species richness. We show that (1) the definition used for functional groups strongly influences the perceived relationship; (2) when using more comprehensive definitions of functional groups the relationship is asymptotic and highly unsaturated; and (3) increasing species richness primarily leads to the addition of species to a few key functional groups rather than the addition of novel functional groups. Consequently, non-random assembly of fish assemblages leaves many possible functional groups empty, and high species redundancy within functional groups is limited to relatively few groups. Consequences of future extirpation or extinction of species for the loss of ecosystem functions will be variable, in part depending on the proportion of species lost within a functional group, but potentially profound due to the large number of functional groups represented by only a single species and the targeted nature of most species extraction and extirpations. KEY WORDS: Biodiversity · Ecological filtering · Community assembly · Species loss · Ecosystem services Full text in pdf format Supplementary appendix PreviousNextCite this article as: Halpern BS, Floeter SR (2008) Functional diversity responses to changing species richness in reef fish communities. Mar Ecol Prog Ser 364:147-156. https://doi.org/10.3354/meps07553Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 364. Online publication date: July 29, 2008 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2008 Inter-Research.