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Fernanda Gonzalez-Saldias¹, Aaron Pérez-Haase², Eulàlia Pladevall-Izard²

¹Department of Evolutionary Biology, Ecology, and Environmental Sciences, University of Barcelona, Barcelona, Spain; Freshwater Ecology, Hydrology, and Management laboratory (FEHM-lab), University of Barcelona, Barcelona, Catalonia, Spain.

The Science of the total environment

|February 28, 2025

概括

畜牧放牧影响了高山沼泽地区的藻群落,改变了它们的组成. 然而,藻的多样性显示出对这种压力的抵抗力,pH值是最关键的因素.

科学领域:

生态生态学生态生态学
环境科学环境科学
植物学植物学

背景情况:

高山沼泽是敏感的生态系统,受人类活动的影响,如牲畜放牧.
牲畜可以改变土地利用,分裂息地,并影响水生动物群落,包括藻,这是关键的生态指标.
沼泽地中的二体社区拥有高度的多样性,包括稀有和危物种,使它们易受过度放牧等压力的影响.

研究的目的:

评估畜牧业压力对藻社区组成和高山沼泽区多样性的影响.
确定影响藻群落在牲畜压力下的关键环境变量.
了解沼泽藻群体对人为干扰的抵抗力和脆弱性.

主要方法:

实地实验是在比利尼斯山脉的六个高山沼泽地进行的.
安装了牲畜排斥,以创建受控的实验条件.
确定了二原子物种,并测量了pH,海拔和水覆盖等环境变量.

主要成果:

在研究地点共发现了来自60个属的370种藻.
原子组成受到pH值,海拔,布里奥菲塔覆盖,水覆盖,牲畜压力和沼泽面积的显著影响.
虽然藻组成在牲畜压力高的地区发生了变化,但物种丰富性和香农指数没有受到影响,这表明社区的抵抗力.

结论:

山地沼泽地区的高畜牧压力会影响藻群体的组成,但不一定影响丰富性或多样性指数.
藻社区的pH值成为影响藻社区结构和丰富性的最重要的环境因素.
尽管观察到影响,但藻群体对牲畜压力表现出显著的抵抗力,尽管息地碎片化和土壤变化增加了脆弱性. 保护泥对于保护脆弱的藻物种至关重要.

关键词:

人类产生的压力是人为的.这种植物属于Bacillariophyceae.皮特兰德是一个泥炭地.皮勒尼斯山脉是一个比利时山脉.它们的pH值为pH.

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