食草动物
人类世
生态学
生态位
利基
人口
栖息地
种内竞争
生物
生物多样性
种间竞争
地理
气候变化
社会学
人口学
作者
Yangheshan Yang,Yuhao Zhao,Thomas A. Stidham,Xiangxu Liu,Xinming Zhu,Bicheng Li,Lixun Zhang,Xijun Ni,Xingfeng Si
摘要
The Anthropocene's human-dominated habitat expansion endangers global biodiversity. However, large mammalian herbivores experienced few extinctions during the 20th century, hinting at potentially overlooked ecological responses of a group sensitive to global change. Using dental microwear as a proxy, we studied large herbivore dietary niches over a century across mainland China before (1880s-1910s) and after (1970s-1990s) the human population explosion. We uncovered widespread and significant shifts (interspecific microwear differences increased and intraspecific microwear dispersion expanded) within dietary niches linked to geographical areas with rapid industrialization and population growth in eastern China. By contrast, in western China, where human population growth was slower, we found no indications of shifts in herbivore dietary niches. Further regression analysis links the intensity of microwear changes to human land-use expansion. These analyses highlight dietary adjustments of large herbivores as a likely key factor in their adaptation across a century of large-scale human-driven changes.
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