Responses of phytoplankton functional groups to simulated winter warming

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 藻类生物学及应用研究中心 > 期刊论文

	Responses of phytoplankton functional groups to simulated winter warming
	Dong, Jing 1,2; Zhou, Weicheng 1,3; Song, Lirong 1; Li, Genbao 1
刊名	ANNALES DE LIMNOLOGIE-INTERNATIONAL JOURNAL OF LIMNOLOGY
	2015
卷号	51 期号:3 页码:199-210
关键词	Phytoplankton functional group winter warming eutrophication responses
ISSN号	0003-4088
英文摘要	We investigated the seasonal dynamics of phytoplankton functional groups and the relevant environmental factors (water temperature, total nitrogen content, total phosphorous content and water transparency) in Dianchi Lake, China. We also examined the growth rates and physiological characteristics of representative species in laboratory cultures. In the field experiment, five dominant functional groups, including M (mainly consisted of Microcystis aeruginosa; Microcystis wesenbergii and Microcystis flos-aquae), H1(mainly consisted of Aphanizomenon flos-aquae), J (mainly consisted of Scenedesmus; Pediastrum and Coelastrum), F (mainly consisted of Oocystis and Kirchneriella) and P (mainly consisted of Melosira), were determined. Groups M and J were prevalent throughout the year and comprised more than 90% of the total biomass. Group M was prevalent at a relatively high temperature in summer and autumn; by contrast, group J was dominant at low temperature in winter and early spring. Co-cultivation laboratory experiments revealed that the biomass and the density of Microcystis sp., which is the representative species of the functional group M, were higher at 18 degrees C than at 13 degrees C. Conversely, the density and the biomass of the representative species of the functional group J (consisted of Pediastrum duplex, Coelastrum microporum and Scenedesmus obliquus) were higher at 13 degrees C than at 18 degrees C. At low temperatures, group M (Microcystis spp.) cannot successfully survive and grow at low temperatures, exhibiting various stress responses, such as inhibited photosynthetic activities and reduced phosphorous utilization. However, low temperature increased soluble carbohydrate contents of Microcystis, which favored the fast development of Microcystis, once the temperature warmed. Currently, climate warming is occurring in the Dianchi Lake basin; thus, future climate warming in winter (+/- 5 degrees C) may compromise the advantages of group J and promote the abundance of group M. The water transparency, dissolved oxygen and biodiversity in the lake would be further reduced. Furthermore, the increased microcystin and odor produced by Microcystis would considerably threaten the food web structure and lake ecosystem functions.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Limnology
研究领域[WOS]	Marine & Freshwater Biology
关键词[WOS]	CLIMATE-CHANGE ; CYANOBACTERIAL BLOOMS ; LONG-TERM ; SHALLOW LAKES ; NUTRIENT LOAD ; TROPHIC STATE ; TEMPERATURE ; GROWTH ; MICROCYSTIS ; PHENOLOGY
收录类别	SCI
语种	英语
WOS记录号	WOS:000366177800002
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/27454]
专题	水生生物研究所_藻类生物学及应用研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Henan Normal Univ, Coll Fisheries, Xinxiang 453007, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Dong, Jing,Zhou, Weicheng,Song, Lirong,et al. Responses of phytoplankton functional groups to simulated winter warming[J]. ANNALES DE LIMNOLOGIE-INTERNATIONAL JOURNAL OF LIMNOLOGY,2015,51(3):199-210.
APA	Dong, Jing,Zhou, Weicheng,Song, Lirong,&Li, Genbao.(2015).Responses of phytoplankton functional groups to simulated winter warming.ANNALES DE LIMNOLOGIE-INTERNATIONAL JOURNAL OF LIMNOLOGY,51(3),199-210.
MLA	Dong, Jing,et al."Responses of phytoplankton functional groups to simulated winter warming".ANNALES DE LIMNOLOGIE-INTERNATIONAL JOURNAL OF LIMNOLOGY 51.3(2015):199-210.