Interspecific competition limits bird species' ranges in tropical mountains

被引：49
作者：
Freeman, Benjamin G. [1 ,2 ]
Strimas-Mackey, Matthew [3 ]
Miller, Eliot T. [3 ]
机构：
[1] Univ British Columbia, Biodivers Res Ctr, Vancouver, BC V6T 1Z4, Canada
[2] Univ British Columbia, Dept Zool, Vancouver, BC, Canada
[3] Cornell Lab Ornithol, Ithaca, NY 14850 USA
来源：
SCIENCE | 2022年 / 377卷 / 6604期
基金：
美国国家科学基金会;
关键词：
DISTRIBUTIONS; SPECIATION; GRADIENTS; ZONATION; PASSES;
D O I：
10.1126/science.abl7242
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Species' geographic ranges are limited by climate and species interactions. Climate is the prevailing explanation for why species live only within narrow elevational ranges in megadiverse biodiverse tropical mountains, but competition can also restrict species' elevational ranges. We test contrasting predictions of these hypotheses by conducting a global comparative test of birds' elevational range sizes within 31 montane regions, using more than 4.4 million citizen science records from eBird to define species' elevational ranges in each region. We find strong support that competition, not climate, is the leading driver of narrow elevational ranges. These results highlight the importance of species interactions in shaping species' ranges in tropical mountains, Earth's hottest biodiversity hotspots.
引用
收藏
页码：416 / +
页数：5
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