Physiological changes of submerged macrophytes in response to a floating filamentous green algae bloom in clear-water conditions

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	Physiological changes of submerged macrophytes in response to a floating filamentous green algae bloom in clear-water conditions
	Li Dunhai; Guo Liangliang; Dai Liangliang; Yang Kai; Li Genbao
刊名	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2018-09-01
卷号	36 期号:5 页码:1604-1614
关键词	floating Cladophora sp. Elodea nuttallii growth physiology
ISSN号	2096-5508
文献子类	Article
英文摘要	The aim of this study was to evaluate the physiological responses of a submerged macrophyte to a floating filamentous green algal bloom in clear-water conditions. Elodea nuttallii was grown with floating Cladophora sp. at four different levels (0, control; 140, 280, 560 g FW/m(2)) in an outdoor experimental system, and its photosynthetic and antioxidant systems were evaluated. The presence of floating Cladophora sp. significantly changed the water environment by decreasing light intensity and increasing dissolved oxygen and the pH value. The photosynthetic parameters of E. nuttallii (e.g. Delta F/F-m',F-v/F-m, total chlorophyll) were higher in the presence of floating Cladophora sp. than in the control at the beginning of experiment. Because of the increasing dissolved oxygen concentration and pH value, the values of these indicators decreased (except for photosynthetic pigments) during the experiment. Compared with E. nuttallii in the control, E. nuttallii growing in the presence of floating Cladophora sp. showed higher malondialdehyde content, catalase activity, and peroxidase activity. The biomass of E. nuttallii was decreased by about 30% in the presence of high biomasses of floating Cladophora sp. (280 and 560 g FW/m(2)). These results suggest that floating Cladophora had complex effects on the biomass of E. nuttallii and that changes in water quality resulting from floating Cladophora sp. may be more important than its direct shading effect.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41287]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
推荐引用方式 GB/T 7714	Li Dunhai,Guo Liangliang,Dai Liangliang,et al. Physiological changes of submerged macrophytes in response to a floating filamentous green algae bloom in clear-water conditions[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2018,36(5):1604-1614.
APA	Li Dunhai,Guo Liangliang,Dai Liangliang,Yang Kai,&Li Genbao.(2018).Physiological changes of submerged macrophytes in response to a floating filamentous green algae bloom in clear-water conditions.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,36(5),1604-1614.
MLA	Li Dunhai,et al."Physiological changes of submerged macrophytes in response to a floating filamentous green algae bloom in clear-water conditions".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 36.5(2018):1604-1614.