光与养分的耦合作用对不同深度微囊藻气体囊泡含量有影响

IF 1.9 3区 环境科学与生态学 Q2 MARINE & FRESHWATER BIOLOGY
Tianhao Wu, Cai Wang, Jing Cao, Ze-ying Hou, Zhaosheng Chu
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引用次数: 0

摘要

湖泊是人类重要的水资源,但微囊藻的大量繁殖对饮用水安全和水生生态系统构成了严重威胁。气体囊泡(GVs)是微囊藻华发生的重要触发因素。为了解光照和养分对洱海浮游植物GV含量的影响,对洱海浮游植物进行了调查。结果表明,地表水的平均GV含量高于深水。水中总氮通过限制蛋白质含量影响GV含量,细胞内氮含量每增加1.0 pg/细胞,GV含量增加9.2 μm3/细胞。光和总磷通过限制能量供应影响深水GV含量,细胞内磷含量每增加1.0 pg/细胞,GV含量增加52.4 μm3/细胞。这些结果表明,对于低透明度湖泊,降低总磷浓度可以降低GV含量。降低总氮浓度可降低GV含量,降低微囊藻的优势度。本研究为微囊藻的防治提供了有益的信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Coupling of light and nutrients affects Microcystis gas vesicle content at different depths
Lakes are important water resources for human beings, but Microcystis blooms pose a serious threat to drinking water security and aquatic ecosystems. Gas vesicles (GVs) are an important trigger for the occurrence of Microcystis blooms. To understand the effects of light and nutrients on GV content, the phytoplankton in Lake Erhai were investigated. The results showed that the average GV content in the surface water was higher than that in the deep water. The total nitrogen in water affected the GV content by limiting the protein content, and the content of GVs increased by 9.2 μm3/cell for each 1.0 pg/cell increase in the intracellular nitrogen content. Moreover, light and total phosphorus affected the GV content in deep water by limiting the energy supply, and the content of GVs increased by 52.4 μm3/cell for each 1.0 pg/cell increase in the intracellular phosphorus content. These results indicate that for lakes with low transparency, decreasing the total phosphorus concentration can reduce the GV content. Reducing the total nitrogen concentration can reduce the GV content and decrease the dominance of Microcystis in all lakes. This study provides useful information for the control of Microcystis.
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来源期刊
Journal of Plankton Research
Journal of Plankton Research 生物-海洋学
CiteScore
3.50
自引率
9.50%
发文量
65
审稿时长
1 months
期刊介绍: Journal of Plankton Research publishes innovative papers that significantly advance the field of plankton research, and in particular, our understanding of plankton dynamics.
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