在城市沿海生态系统中,环境过随着热带水平的降低而减弱
Wenqian Xu1, Yu-De Pei1, Taylor M W Li1
1Department of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong SAR 999077. China.
Environmental science & technology
|January 30, 2026
概括
城市沿海生态系统表现出复杂的生物多样性变化. 环境DNA (eDNA) 研究表明,虽然微生物受到环境的强烈影响,但更高的热量水平更多地依赖于生物相互作用,影响生态系统的稳定性.
科学领域:
- 海洋生态海洋生态学
- 生态系统网络分析 生态系统网络分析
- 环境DNA (eDNA) 应用
背景情况:
- 城市沿海生态系统面临着越来越大的压力和变化.
- 了解多元生物多样性和生态系统网络反应至关重要,但解决方案不佳.
研究的目的:
- 调查香港城市沿海水域海洋生物 (元生动物,原生动物, prokaryotes) 的时空动态.
- 确定环境因素和生物相互作用如何塑造不同息地的社区组成和网络稳定性.
- 评估基于eDNA的综合框架对城市海洋环境监测的有效性.
主要方法:
- 环境DNA (eDNA) 的metabarcoding,视觉调查,流细胞计和环境测量.
- 对变异的多变量分析 (PERMANOVA) 用于分析社区组成.
- 同时发生的网络分析和结构方程建模以评估网络复杂性和驱动因素.
主要成果:
- 随着食量水平的增加,环境控制减弱; prokaryotes 和 protists 显示较强的季节性/空间影响比盆地动物和鱼类.
- 海洋息地支持最复杂和最稳定的多重营养网络,由生物相互作用驱动.
- 河口息地主要是由温度驱动的,而过渡性息地缺乏明确的驱动因素,表明流动的系统.
结论:
- 环境过和生物调节的依赖梯度的相互作用塑造了沿海生态系统的稳定性.
- 综合的eDNA框架对于监测城市海洋环境中的生物多样性和生态系统变化是有价值的.
- 结果为在全球变化下管理城市海洋生态系统提供了洞察力.
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