2010
DOI: 10.4025/actascibiolsci.v32i2.4303
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Padrões espaciais da riqueza de espécies de viperídeos na América do Sul: temperatura ambiental vs. cinética-bioquímica

Abstract: Este estudo tem por objetivo testar a influência da temperatura na taxa metabólica de viperídeos como um mecanismo básico de origem dos padrões espaciais de riqueza desse grupo na América do Sul, como proposto por Allen et al. (2002) dentro da Teoria Metabólica em Ecologia. Para isso, testamos a relação entre o logaritmo natural da riqueza de espécies de viperídeos e o inverso da temperatura (em Kelvin, 1000*K -1 ), após corrigir os efeitos da autocorrelação espacial, e verificamos se a reta estimada apresenta… Show more

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“…Finally, the applicability of MTE becomes much reduced. This is mainly due to the differences that have been observed in the relationship between temperature and species richness of the same taxonomic group at different spatial scales of analysis (Cassemiro et al, 2007;Hawkins et al, 2007;Terribile and Diniz-Filho, 2008;Lima-Ribeiro et al, 2010;this study). Although temperature appears to affect species distribution according to the MTE in some specific regions, the pattern of elapid species richness presumably reflects the coupled effect of biotic and abiotic variables, resulting in non-stationary relationships between temperature and richness when analyzed on a local scale.…”
Section: Discussionmentioning
confidence: 86%
See 1 more Smart Citation
“…Finally, the applicability of MTE becomes much reduced. This is mainly due to the differences that have been observed in the relationship between temperature and species richness of the same taxonomic group at different spatial scales of analysis (Cassemiro et al, 2007;Hawkins et al, 2007;Terribile and Diniz-Filho, 2008;Lima-Ribeiro et al, 2010;this study). Although temperature appears to affect species distribution according to the MTE in some specific regions, the pattern of elapid species richness presumably reflects the coupled effect of biotic and abiotic variables, resulting in non-stationary relationships between temperature and richness when analyzed on a local scale.…”
Section: Discussionmentioning
confidence: 86%
“…Consequently, other factors might limit species richness (Hawkins et al, 2003b). Moreover, although the MTE assumes that a relationship between temperature and ectotherm richness exists, some groups apparently do not follow the theory expectations (e.g., Lima-Ribeiro et al, 2010). Thus, these other factors that are potentially influential on the theory require a better investigation of how the richness of distinct taxonomic groups can be explained by the MTE.…”
Section: Introductionmentioning
confidence: 99%