Long-term insect censuses capture progressive loss of ecosystem functioning in East Asia

文献类型： 外文期刊

第一作者： Zhou, Yan

作者： Zhou, Yan;Zhang, Haowen;Liu, Dazhong;Khashaveh, Adel;Li, Qian;Wyckhuys, Kris A. G.;Wu, Kongming

作者机构：

期刊名称：SCIENCE ADVANCES （ 影响因子：13.6； 五年影响因子：15.4 ）

ISSN： 2375-2548

年卷期： 2023 年 9 卷 5 期

页码：

收录情况： SCI

摘要： Insects provide critical ecosystem services such as biological pest control, in which natural enemies (NE) regulate the populations of crop-feeding herbivores (H). While H-NE dynamics are routinely studied at small spatio-temporal scales, multiyear assessments over entire agrolandscapes are rare. Here, we draw on 18-year radar and searchlight trapping datasets (2003-2020) from eastern Asia to (i) assess temporal population trends of 98 airborne insect species and (ii) characterize the associated H-NE interplay. Although NE consistently constrain interseasonal H population growth, their summer abundance declined by 19.3% over time and prominent agricultural pests abandoned their equilibrium state. Within food webs composed of 124 bitrophic couplets, NE abundance annually fell by 0.7% and network connectance dropped markedly. Our research unveils how a progressive decline in insect numbers debilitates H trophic regulation and ecosystem stability at a macroscale, carrying implications for food security and (agro)ecological resilience during times of global environmental change.

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