动物浮游生物-植物浮游生物生物质和大湖区的多样性关系
Katya E Kovalenko1, Euan D Reavie1, Stephanie Figary2
1Natural Resources Research Institute, University of Minnesota, Duluth, MN, United States of America.
PloS one
|October 26, 2023
概括
在长达18年的时间里,植物浮游生物和动物浮游生物在大湖地区显示出较弱的积极关系. 这表明直接合是有限的,因此很难预测食物网对藻类变化的更高反应.
科学领域:
- 水生生态学 水生生态学
- 临界技术 临界技术
- 食物网络动力学 食物网络动力学
背景情况:
- 了解生产者与消费者的关系对于水生生态系统至关重要.
- 植物浮游生物和动物浮游生物构成了许多水生食物网的基础.
- 植物浮游生物组合的变化可能会影响动物浮游生物和更高的营养水平.
研究的目的:
- 量化劳伦斯大湖地区植物浮游生物和动物浮游生物之间的长期和季节性关系.
- 检查植物浮游生物多样性对动物浮游生物质和多样性的影响.
- 在18年的时间内评估潜在的生产者-消费者脱.
主要方法:
- 对18年 (2001-2018) 的双对植物浮游生物和动物浮游生物样本进行分析.
- 来自美国环保署大湖生物监测计划的数据.
- 对藻类生物量,多样性和动物浮游生物量和多样性之间的关系进行统计分析.
主要成果:
- 在春季和夏季大湖地区的藻类总生物量和动物浮游生物量之间发现了微弱的正相关性.
- 这种关系在单个湖泊中较弱和不一致.
- 动物浮游生物量与藻类多样性有微弱的负相关性,而动物浮游生物多样性没有受到影响.
- 在研究期间,没有观察到植物浮游生物和动物浮游生物之间的脱增加的证据.
结论:
- 植物浮游生物和动物浮游生物之间较弱的合表明,对更高的营养水平的直接预测能力有限.
- 消费者滞后,自上而下的控制或其他混变量等因素可能会影响这些关系.
- 在劳伦西亚大湖地区,预测植物浮游生物变化对更高的食物营养水平反应仍然具有挑战性.
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