在实施水沉积物调节方案后,探索表层食物网结构的变化
Yunlong Chen1, Chengcheng Su2, Xiaomin Zhang3
1State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Shandong 266237, China.
The Science of the total environment
|October 26, 2024
概括
黄河是黄河的一条河流.
科学领域:
- 生态动态和食物网分析.
- 河口生态系统管理.
- 水沉积物调节方案的环境影响评估.
背景情况:
- 黄河河口的水沉积物调节计划 (WSRS) 旨在增加洪水能力,但生态影响仍未得到充分研究.
- 可持续的渔业和生态系统健康受到WSRS生态影响的知识不足所阻碍.
- 了解食物网结构对于评估生态系统弹性至关重要.
研究的目的:
- 分析水沉积调节方案 (WSRS) 对黄河河口 (YRE) 食物网结构的生态影响.
- 在WSRS实施后,识别食物网复杂性和关键物种的变化.
- 为生态健康评估和河口渔业管理提供理论基础.
主要方法:
- 在WSRS实施之前,期间和之后为YRE构建了食物网络拓结构.
- 利用2023年6月至8月的渔业独立数据分析了食物网复杂性的变化.
- 使用拓指数评估关键物种和整体食物网连接.
主要成果:
- 在WSRS.后观察到,营养物种 (59到52) 和食关系 (539到395) 的减少.
- 简化了食物网结构,由增加的节点密度,减少的链接密度和减少的复杂度指数表明.
- 日本海和神灵仍然是关键物种;食肉动物对系统弹性至关重要.
结论:
- 在短时间内,WSRS显示了对YRE食物网的有限,不持久的生态影响.
- 具有高连接性的万食主要物种增强了食物网对破坏的弹性.
- 这些发现支持对正在进行沉积物减轻的大河口的生态健康评估和管理策略.
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