水力动力学和食物变化重塑了城市生态系统中的宏观无脊椎动物食物网
Xiongdong Zhou1,2, Congcong Wang2, Giri Kattel2,3,4
1Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
Environmental science and ecotechnology
|September 16, 2024
概括
城市化通过削弱宏观无脊椎动物的食物网来破坏水生生态系统. 这导致生物多样性,生物质和稳定性减少,影响城市水生环境.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 城市生态城市生态学
背景情况:
- 城市化在全球范围内显著改变了水生生态系统.
- 了解食物网对这些变化的反应至关重要,但有限.
研究的目的:
- 调查水力动力学和热量变化如何影响宏无脊椎动物食物网结构,功能和稳定性在城市水生生态系统.
- 在城市压力下识别食物网不稳定的关键驱动因素.
主要方法:
- 使用了全度饮食宽度模型和生物质平衡模型.
- 在不同的水力动力学和食物压力下建立了代表性的宏观无脊椎动物食物网.
主要成果:
- 水力动力和热量损失使热量协会丰富度减少了约75%,生物质流量减少了约85%,生物质储存减少了约80%.
- 这些减少促进了专业化,破坏了食物网的稳定性,并减少了食物协会的控制.
- 即使在类似的压力水平下,食物网的稳定性也发生了显著的变化,受到关键的热量学会级联控制的影响.
结论:
- 水力动力学和热量变化极大地影响了城市水生动物的食物网.
- 恢复城市水生生态系统需要环境振兴和加强内部食物网动态,以保持生态稳定.
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