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蒙坦鱼生物多样性对景观和人类活动在潜在的水质路径下的反应

Wenjun Zhong^1,2,3, Wanjuan Bi¹, Yan Zhang¹

¹State Key Laboratory of Water Pollution Control and Green Resource Recycling, School of the Environment Nanjing University Nanjing China.

Ecology and evolution

|April 11, 2025

概括

山河鱼的生物多样性是由海拔和人类活动塑造的. 水质调解了这些影响,突出了对这些重要生态系统的保护战略的需要.

科学领域:

生态生态学生态生态学
保护生物学保护生物学
环境科学环境科学

背景情况:

山地河流生态系统是重要的生物多样性热点.
在这些敏感的环境中,人类产生的压力正在增加.
景观特征和人类活动对鱼类生物多样性的相互作用尚未得到充分理解.

研究的目的:

调查海拔和人类足迹如何影响山区河流中的鱼类生物多样性.
解开景观和人类驱动因素对分类学,功能和遗传多样性的影响.
确定在山地淡水系统中生物多样性变化的关键环境媒介.

主要方法:

利用环境DNA (eDNA) 来评估鱼类的分类构成.
采用部分最小平方结构方程建模 (PLS-SEM) 来分析生物多样性反应.
量化生物多样性方面 (分类学,功能,遗传) 沿着海拔和人类足迹梯度.

主要成果:

eDNA准确地反映了鱼类的分类构成,其中Cypriniformes和Perciformes占主导地位.
下游地区表现出更高的分类学和功能多样性,而上游地区的遗传多样性更大.
高度和人类足迹直接影响了分类学多样性,而不是功能或遗传多样性.
水质参数 (TP,TN,BOD5,TOC) 被确定为关键的调解因素.

结论:

建立了一个框架,将景观和人类驱动因素与山地河流中的生物多样性变化联系起来.
水质在调节海拔和人类足迹对鱼类多样性的影响方面发挥着关键作用.
研究结果为在山地淡水生态系统中优先考虑保护工作提供了可扩展的参考.

关键词:

河河河河功能多样性的功能多样性.遗传多样性遗传多样性分类学多样性的分类学多样性

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