根木偶大师:在水下水生植被群体中,Infauna转移特征-生产力关系
Charlotte Angove1, Alf Norkko2, Camilla Gustafsson2
1Stable Isotope Laboratory of Luke (SILL) Natural Resources Institute Finland (Luke) Helsinki Finland.
Ecology and evolution
|October 28, 2024
概括
动物,像双鱼Macoma balthica,显著改变了水下水生植被 (SAV) 的生长策略. 它们的存在将生物质生产从植物高度转移到根特征,影响SAV社区结构.
科学领域:
- 海洋生态海洋生态学
- 植物生态学植物生态学
- 地生态学 地生态学
背景情况:
- 水下水生植被 (SAV) 的生长通常受到光线和营养素的限制.
- 在SAV草中常见的内动物会影响营养循环和植物生长,但它们在植物特征生物质关系中的作用尚不清楚.
研究的目的:
- 调查非动物双鱼Macoma balthica在塑造水下水生植被 (SAV) 社区生物质生产中的作用.
- 确定M. balthica如何影响植物特征和整体SAV生物量之间的关系.
主要方法:
- 在波罗的海进行了为期15周的实地移植实验.
- 实验性SAV群体 (来自六种物种的三种作物) 用M. balthica添加或不添加被操纵.
- 测量了植物特征 (高度,叶面积,根长) 和SAV生物量,以及M. balthica状况和植物组织营养素.
主要成果:
- 社区生物质生产从与植物高度 (控制) 相关的转变为与M. balthica存在的根特征 (MMRL,SRL).
- M. balthica状况指数与叶子组织 δ15N相关,表明营养吸收.
- 波塔莫杰顿叶的生长受到M. balthica的抑制.
结论:
- 在SAV社区中,动物在调解植物特征与生物质生产关系方面发挥着至关重要的作用.
- Macoma balthica可以通过选择性地影响不同的植物物种和生长策略来改变SAV社区结构.
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