气候变化情景与生物入侵之间的相互作用揭示了淡水生态系统中复杂的级联效应
Tauany Rodrigues1,2,3, Pavel Kratina4, Rayanne B Setubal3
1Programa de Pós-graduação em Ecologia, Departamento de Ecologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
Global change biology
|October 22, 2024
概括
气候缓解可以维持淡水生态系统,但气候变化和入侵物种相互作用,减缓分解. 这些全球变化影响了食物网和生态系统过程.
科学领域:
- 淡水生态学 淡水生态学
- 气候变化科学 气候变化科学
- 侵入性物种生物学 侵入性物种生物学
背景情况:
- 气候变化和生物入侵是影响淡水生态系统的主要全球驱动因素.
- 关于气候变化场景和对多种热带淡水系统的入侵的互动影响的实验证据有限.
研究的目的:
- 通过实验评估气候变化 (缓解与正常运作) 和生物入侵对淡水热带群体和生态系统过程的独立和互动影响.
- 确定气候缓解是否可以抵消气候变化和入侵的负面影响.
主要方法:
- 两种气候变化场景和生物入侵的实验比较.
- 测量了植物浮游生物,动物浮游生物,周边浮游生物,宏观无脊椎动物和本地巨型植物的生物量.
- 评估了合金材料的分解速度.
主要成果:
- 持续的气候变化减少了本地巨生物质,增加了周围生物质.
- 气候减缓处理维持了与气候基线相似的条件.
- 仅仅生物入侵就增加了宏无脊椎动物生物量 (chironomids).
- 气候变化和入侵的结合降低了分解速度,由改变的养动态介导.
结论:
- 气候减缓有效地维持淡水生态系统的基线条件.
- 气候变化和生物入侵的互动效应涉及到各热量级的复杂级联相互作用,影响生态系统的分解等过程.
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