Warming and shifts in litter quality drive multiple responses in freshwater detritivore communities

作者：Sandra Benavides‐Gordillo, Angélica L. González, Mônica F. Kersch‐Becker, Marcelo S. Moretti, Dieison A. Moi, Marcos Pereira Marinho Aidar, Gustavo Q. Romero · 发表于：Scientific Reports · 年份：2024 · DOI：10.1038/s41598-024-61624-z · 被引用次数：9 · 研究领域：Freshwater macroinvertebrate diversity and ecology、Fish Ecology and Management Studies、Aquatic Invertebrate Ecology and Behavior

Abstract Aquatic detritivores are highly sensitive to changes in temperature and leaf litter quality caused by increases in atmospheric CO 2 . While impacts on detritivores are evident at the organismal and population level, the mechanisms shaping ecological communities remain unclear. Here, we conducted field and laboratory experiments to examine the interactive effects of changes in leaf litter quality, due to increasing atmospheric CO 2 , and warming, on detritivore survival (at both organismal and community levels) and detritus consumption rates. Detritivore community consisted of the collector-gathering Polypedilum (Chironomidae), the scraper and facultative filtering-collector Atalophlebiinae (Leptophlebiidae), and Calamoceratidae (Trichoptera), a typical shredder. Our findings reveal intricate responses across taxonomic levels. At the organismal level, poor-quality leaf litter decreased survivorship of Polypedilum and Atalophlebiinae. We observed taxon-specific responses to warming, with varying effects on growth and consumption rates. Notably, species interactions (competition, facilitation) might have mediated detritivore responses to climate stressors, influencing community dynamics. While poor-quality leaf litter and warming independently affected detritivore larvae abundance of Atalophebiinae and Calamoceratidae, their combined effects altered detritus consumption and emergence of adults of Atalophlebiinae. Furthermore, warming influenced species abundances differ...