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在一个大型环生湖中,在蓝藻有害藻类繁殖 (cHAB) 期间,中生浮游生物的放牧模式和偏好

Daniel I Peters¹, Lyndsie M Collis², Morgan D Shaw¹

¹Aquatic Ecology Laboratory, Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, 1314 Kinnear Rd, Columbus, OH 43212, USA.

|November 15, 2025

概括

在有害的藻类开花期间,中生浮游生物在纳米浮游生物和蓝藻细菌上放牧. 它们消耗了一小部分植物浮游生物质,但对植物浮游生物的生长率有很大影响,影响了开花的动态.

科学领域:

水生生态学水生生态学
有害的藻类繁殖 (HABs)
动物浮游生物放牧放牧

背景情况:

中浮游生物在水生食物网中至关重要,它将初级生产者与高级消费者联系起来.
在蓝藻有害藻类开花 (cHABs) 期间对中生浮游生物食的理解是有限的.
关于粮食资源和cHAB期间对植物浮游生物的放牧压力存在关键知识差距.

研究的目的:

调查cHAB活动期间的中动物浮游生物放牧率和食物来源选择.
量化中动物浮游生物放牧对植物浮游生物质和生长的影响.
评估中浮游生物在cHAB动态中的作用.

主要方法:

在2021年cHAB赛季期间,在埃里湖西部进行了两次梯度-grazer测试.
在各种食物来源上测量了中生浮游生物的放牧率,包括植物浮游生物种群和皮科浮游生物/纳米浮游生物.
估计了养选择性,碳摄入量以及常存和生长量的消耗.

主要成果:

中原浮游生物选择性地消耗了自和异的纳米浮游生物,避免了蓝藻细菌,对Cryptophyta/Bacillariophyta中立.
碳摄入量主要由自性纳米浮游生物和蓝藻细菌主导.
中生浮游生物对植物浮游生物和蓝藻细菌的生长率施加了更强大的控制,而不是对常存生物质的控制.

结论:

在cHABs期间,中生浮游生物利用各种食物来源,包括蓝藻细菌.
中生浮游生物的放牧可以通过直接消费和间接影响影响cHAB动态.
需要进一步的研究,以了解蓝藻细菌将碳纳入动物浮游生物的生产.

关键词:

蓝藻细菌是一种蓝藻细菌.放牧实验是一种放牧实验.有害的藻类繁殖.埃里湖是埃里湖的一个组成部分.纳米浮游生物的存在它们是小浮游生物 (picoplankton).动物浮游生物 (zooplankton) 是一种生态浮游生物.

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