Scale-dependent effects of niche specialisation: The disconnect between individual and species ranges.
Ecol Lett
; 24(7): 1408-1419, 2021 Jul.
Article
em En
| MEDLINE
| ID: mdl-33960589
ABSTRACT
One of the most general expectations of species range dynamics is that widespread species tend to have broader niches. However, it remains unclear how this relationship is expressed at different levels of biological organisation, which involve potentially distinctive processes operating at different spatial and temporal scales. Here, we show that range sizes of terrestrial non-volant mammals at the individual and species level show contrasting relationships with two ecological niche dimensions diet and habitat breadth. While average individual home range size appears to be mainly shaped by the interplay of diet niche breadth and body mass, species geographical range size is primarily related to habitat niche breadth but not to diet niche breadth. Our findings suggest that individual home range size is shaped by the trade-off between energetic requirements, movement capacity and trophic specialisation, whereas species geographical range size is related to the ability to persist under various environmental conditions.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ecossistema
/
Dieta
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article