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在低光环境中,水下巨型植物物种是否会影响甲动物动物浮游生物的功能群丰富性及其资源利用效率?

Li Wang^1,2, Xufa Ma¹, Jun Chen²

¹College of Fisheries, Huazhong Agricultural University, Wuhan, China.

Frontiers in plant science

|June 22, 2023

概括

低光压力影响浅湖生态系统,通过减少动物浮游生物的功能群丰富性和资源使用效率. 沉浸的巨型植物选择是恢复动物浮游生物多样性和湖泊清晰度的关键.

科学领域:

生态生态学生态生态学
临界技术临界技术
水生生态学水生生态学

背景情况:

潜水中的巨生物对浅湖的清水至关重要,但经常面临低光压力.
低光对动物浮游生物的功能群体和巨型植物床内的资源利用效率的影响尚不清楚.

研究的目的:

研究如何低光应激和不同的潜水巨型植物物种 (Vallisneria natans,Potamogeton maackianus) 影响甲动物动物浮游生物的功能群和资源利用效率.
确定动物浮游生物功能群丰富与物种多样性的相对重要性,以影响光限下的资源利用效率.

主要方法:

两次中宇宙实验在受控的低光条件下进行,并检测了两种潜水中的巨型植物物种的存在.
动物浮游生物群落结构,功能组丰富性,物种多样性和资源利用效率 (Zp/Chl-a) 被分析.
结构方程建模被用来评估光,巨,动物浮游生物和资源利用效率之间的关系.

主要成果:

非生物因素,特别是光线的可用性,是动物浮游生物群落变化的主要驱动因素.
光强度下降导致动物浮游生物的功能群丰富性和物种多样性下降,基板削者显著下降.
低光压力降低了动物浮游生物资源利用效率,功能组丰富性比物种多样性产生更大的影响.

结论:

低光压力通过改变浅湖的功能组组成,对动物浮游生物资源利用效率产生负面影响.
在低光条件下,水下巨型植物物种的选择会影响动物浮游生物的功能群丰富性和资源利用效率.
选择合适的巨型植物物种对于保持动物浮游生物多样性和支持湖泊恢复工作至关重要.

关键词:

生态功能生态功能低光压力压力是低光压力.植物密度植物密度沉浸在水中的巨生物.动物浮游生物放牧草地

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