Scale-dependent effects of niche specialisation: The disconnect between individual and species ranges,Ecology Letters

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Scale-dependent effects of niche specialisation: The disconnect between individual and species ranges
Ecology Letters ( IF 7.6 ) Pub Date : 2021-05-07 , DOI: 10.1111/ele.13759
Shan Huang ₁ , Marlee A. Tucker ₂ , Anne G. Hertel _{1,

3} , Alison Eyres _{1,

4,

5} , Jörg Albrecht ₁

Affiliation

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.

中文翻译：

生态位专业化的规模依赖效应：个体和物种范围之间的脱节

对物种范围动态的最普遍预期之一是广泛分布的物种往往具有更广泛的生态位。然而，目前尚不清楚这种关系如何在不同的生物组织水平上表达，这涉及在不同空间和时间尺度上运行的潜在独特过程。在这里，我们展示了在个体和物种水平上陆地非自由哺乳动物的范围大小与两个生态位维度的对比关系：饮食和栖息地宽度。虽然平均个体家庭范围大小似乎主要受饮食生态位宽度和体重的相互作用影响，但物种地理范围大小主要与栖息地生态位宽度有关，但与饮食生态位宽度无关。

更新日期：2021-06-13

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