Phenological sensitivity to temperature mediates herbivory

Phenological sensitivity to temperature mediates herbivory
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对温度的物候敏感性介导食草

DOI:
10.1111/gcb.15600
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发表时间:
2021
影响因子:
11.6
通讯作者:
Davies, T. Jonathan
Davies, T. Jonathan
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Meineke, Emily K.;Davis, Charles C.;Davies, T. Jonathan

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物种间的相互作用推动着生态系统的进程,是全球变化研究的主要焦点。预计将随着气候变化而变化的最重要的相互作用是昆虫、草食动物和植物之间的相互作用,这两种相互作用对温度都高度敏感。食草昆虫和它们的寄主植物表现出不同程度的同步性,气候变化可能会扰乱或增强这种同步性,但缺乏关于同步性变化的经验数据。利用从1900年到2015年从美国东北部和法国收集的植物标本上的食草性证据,我们提供了证据,表明具有温度敏感物候的植物物种在较温暖的年份遭受更高程度的虫害,而对温度较不敏感的共生物种则不会。虽然食草性可能是通过多个途径在变暖和物候之间的相互作用中进行调节的,但我们认为,变暖可能会延长对物候敏感的植物的生长季,使它们的叶片在温暖的年份暴露在食草动物的更长时间内。我们认为,温暖年份的食草性增加可能代表了在较长时间尺度上对气候变化的物候跟踪之前被低估的成本。
Species interactions drive ecosystem processes and are a major focus of global change research. Among the most consequential interactions expected to shift with climate change are those between insect herbivores and plants, both of which are highly sensitive to temperature. Insect herbivores and their host plants display varying levels of synchrony that could be disrupted or enhanced by climate change, yet empirical data on changes in synchrony are lacking. Using evidence of herbivory on herbarium specimens collected from the northeastern United States and France from 1900 to 2015, we provide evidence that plant species with temperature‐sensitive phenologies experience higher levels of insect damage in warmer years, while less temperature‐sensitive, co‐occurring species do not. While herbivory might be mediated by interactions between warming and phenology through multiple pathways, we suggest that warming might lengthen growing seasons for phenologically sensitive plant species, exposing their leaves to herbivores for longer periods of time in warm years. We propose that elevated herbivory in warm years may represent a previously underappreciated cost to phenological tracking of climate change over longer timescales.
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