Population asynchrony within and between trophic levels have contrasting effects on consumer community stability in a subtropical lake

作者：R. Xiao, Jun Chen, Shaopeng Wang, Haojie Su, Qingyang Rao, Wulai Xia, Jiarui Liu, Xiaoyue Fan, Xuwei Deng, Hong Shen, Ping Xie · 发表于：Journal of Animal Ecology · 年份：2024 · DOI：10.1111/1365-2656.14176 · 被引用次数：15 · 研究领域：Isotope Analysis in Ecology、Animal Ecology and Behavior Studies、Marine and fisheries research

Clarifying the effects of biodiversity on ecosystem stability in the context of global environmental change is crucial for maintaining ecosystem functions and services. Asynchronous changes between trophic levels over time (i.e. trophic community asynchrony) are expected to increase trophic mismatch and alter trophic interactions, which may consequently alter ecosystem stability. However, previous studies have often highlighted the stabilising mechanism of population asynchrony within a single trophic level, while rarely examining the mechanism of trophic community asynchrony between consumers and their food resources. In this study, we analysed the effects of population asynchrony within and between trophic levels on community stability under the disturbances of climate warming, fishery decline and de-eutrophication, based on an 18-year monthly monitoring dataset of 137 phytoplankton and 91 zooplankton in a subtropical lake. Our results showed that species diversity promoted community stability mainly by increasing population asynchrony both for phytoplankton and zooplankton. Trophic community asynchrony had a significant negative effect on zooplankton community stability rather than that of phytoplankton, which supports the match-mismatch hypothesis that trophic mismatch has negative effects on consumers. Furthermore, the results of the structural equation models showed that warming and top-down effects may simultaneously alter community stability through population dynamic...