捕食者驱动的行为转变在一个常见的形状资源流从海洋到陆地生态系统的资源流
Oriol Lapiedra1,2, Nina Morales2, Louie H Yang3
1CREAF, Edifici C Campus de Bellaterra, Cerdanyola del Valles, Spain.
Ecology letters
|November 16, 2023
概括
捕食者导致棕色的改变了他们的食行为,转移到更高的座上,少吃海洋食物. 这种快速的行为转变影响了几代人的生态系统资源流动.
科学领域:
- 生态生态学 生态生态学
- 行为生态学 行为生态学
- 生态系统动力学 生态系统动力学
背景情况:
- 食决定对食物网结构至关重要.
- 单个物种的行为转变可以显著改变生态系统的资源流动.
- 了解捕食者与猎物的相互作用对于生态系统的运行至关重要.
研究的目的:
- 调查捕食者 (卷尾) 的存在如何影响棕色子的食和资源使用.
- 为了确定捕食者诱导的鱼行为变化是否会影响海洋到陆地资源流动.
- 评估这些食利基转移的跨代持续性.
主要方法:
- 实地实验涉及复制的岛屿生态系统与半树木棕色.
- 捕食性地面生活的卷尾的实验转移.
- 在转移后的一年内,分析棕色鱼的高度和食成分 (海洋与陆地资源).
- 评估第一代后代的食行为.
主要成果:
- 捕食者存在的岛屿上的棕色鱼显著增加了高度,并减少了海洋资源的消耗.
- 这种食利基的转移改变了海洋到陆地资源流动的动态.
- 观察到的行为和饮食变化在第一代后代中仍然存在.
- 具有风险行为的雌性鱼在捕食者存在时消耗更多的海洋猎物.
结论:
- 捕食者驱动的行为转变可以迅速改变海洋和陆地生态系统之间的食物网连接.
- 行为介导的利基转变对于理解生态系统的运作至关重要,尤其是在不断变化的环境中.
- 捕食物种的快速行为可塑性可能对生态系统动力学产生重大,级联的影响.
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