Species are not most abundant in the centre of their geographic range or climatic niche.
Ecol Lett
; 20(12): 1526-1533, 2017 Dec.
Article
em En
| MEDLINE
| ID: mdl-29027344
The pervasive idea that species should be most abundant in the centre of their geographic range or centre of their climatic niche is a key assumption in many existing ecological hypotheses and has been declared a general macroecological rule. However, empirical support for decreasing population abundance with increasing distance from geographic range or climatic niche centre (distance-abundance relationships) remains fairly weak. We examine over 1400 bird, mammal, fish and tree species to provide a thorough test of distance-abundance relationships, and their associations with species traits and phylogenetic relationships. We failed to detect consistent distance-abundance relationships, and found no association between distance-abundance slope and species traits or phylogenetic relatedness. Together, our analyses suggest that distance-abundance relationships may be rare, difficult to detect, or are an oversimplification of the complex biogeographical forces that determine species spatial abundance patterns.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Filogenia
/
Ecossistema
Limite:
Animals
Idioma:
En
Revista:
Ecol Lett
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Estados Unidos