Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/11700
Tipo do documento: Artigo
Título: A global evaluation of metabolic theory as an explanation for terrestrial species richness gradients
Autor: Hawkins, Bradford Alan
Albuquerque, Fábio Suzart
Araújo, Miguel Bastos
Beck, Jan
Bini, Luis Mauricio
Sañudo, Francisco José Cabrero
Parga, Isabel Castro
Diniz Filho, José Alexandre Felizola
Castán, Dolores Ferrer
Field, Richard
Gómez, José F.
Hortal, Joaquín
Kerr, Jeremy T.
Cortés, Jorge L. León
Lobo, Jorge Miguel
Montoya, Daniel
Moreno, Juan Carlos
Tarraga, Miguel Ángel Olalla
Pausas, Juli G.
Qian, Hong
Rahbek, Carsten
Rodríguez, Miguel Ángel
Sanders, Nathan James
Williams, Paul
Kitching, Ian J.
Abstract: We compiled 46 broadscale data sets of species richness for a wide range of terrestrial plant, invertebrate, and ectothermic vertebrate groups in all parts of the world to test the ability of metabolic theory to account for observed diversity gradients. The theory makes two related predictions: (1) ln-transformed richness is linearly associated with a linear, inverse transformation of annual temperature, and (2) the slope of the relationship is near 0.65. Of the 46 data sets, 14 had no significant relationship; of the remaining 32, nine were linear, meeting prediction 1. Model I (ordinary least squares, OLS) and model II (reduced major axis, RMA) regressions then tested the linear slopes against prediction 2. In the 23 data sets having nonlinear relationships between richness and temperature, split-line regression divided the data into linear components, and regressions were done on each component to test prediction 2 for subsets of the data. Of the 46 data sets analyzed in their entirety using OLS regression, one was consistent with metabolic theory (meeting both predictions), and one was possibly consistent. Using RMA regression, no data sets were consistent. Of 67 analyses of prediction 2 using OLS regression on all linear data sets and subsets, two were consistent with the prediction, and four were possibly consistent. Using RMA regression, one was consistent (albeit weakly), and four were possibly consistent. We also found that the relationship between richness and temperature is both taxonomically and geographically conditional, and there is no evidence for a universal response of diversity to temperature. Meta-analyses confirmed significant heterogeneity in slopes among data sets, and the combined slopes across studies were significantly lower than the range of slopes predicted by metabolic theory based on both OLS and RMA regressions. We conclude that metabolic theory, as currently formulated, is a poor predictor of observed diversity gradients in most terrestrial systems.
Palavras-chave: Diversity gradients
Ectotherm diversity
Enzyme kinetics
Invertebrate diversity
Llatitudinal gradient
Metabolic theory of ecology
Plant diversity
Species richness
Temperature gradients
Terrestrial species
Vertebrate diversity
País: Estados unidos
Instituição: Ecological Society of America
Unidade acadêmica: Instituto de Ciências Biológicas - ICB (RG)
Citação: HAWKINS, Bradford A.; ALBUQUERQUE, Fabio S.; ARAÚJO, Miguel B.; BECK, Jan; BINI, Luis Mauricio; SAÑUDO, Francisco J. Cabrero; PARGA, Isabel Castro; DINIZ FILHO, José Alexandre Felizola; CASTÁN, Dolores Ferrer; FIELD, Richard; GÓMEZ, José F.; HORTAL, Joaquín; KERR, Jeremy T.; KITCHING, Ian J.; CORTÉS, Jorge L. León; LOBO, Jorge M.; MONTOYA, Daniel; MORENO, Juan Carlos; TÁRRAGA, Miguel Á. Olalla.; PAUSAS, Juli G.; QIAN, Hong; RAHBEK, Carsten; RODRÍGUEZ, Miguel Á.; SANDERS, Nathan J.; WILLIAMS, Paul. A global evaluation of metabolic theory as an explanation for terrestrial species richness gradients. Ecology, Washington, v. 88, n. 8, p. 1877-1888, Aug. 2007.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1890/06-1444.1
Identificador do documento: 10.1890/06-1444.1
URI: http://repositorio.bc.ufg.br/handle/ri/11700
Data de publicação: Ago-2007
Aparece nas coleções:ICB - Artigos publicados em periódicos

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