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Present status and changes of the phytoplankton community after invasion of Neosalanx taihuensis since 1982 in a deep oligotrophic plateau lake, Lake Fuxian in the subtropical China
作者姓名:ZHANG Xi  XIE Ping  CHEN Fei-zhou  LI Yan-ling  LI Si-xin  GUO Ni-chun  QIN Jian-hui
作者单位:[1]DonghuExperimentalStationofLakeEcosystems,StateKeyLaboratoryforFreshwaterEcologyandBiotechnologyofChina,InstituteofHydrobiology,ChineseAcademyofSciences,Wuhan430072,China [2]DonghuExperimentalStationofLakeEcosystems,StateKeyLaboratoryforFreshwaterEcologyandBiotechnologyofChina,InstituteofHydrobiology,ChineseAcademyofSciences,Wuhan430072,China
基金项目:The Key Project of Chinese Academy of Sciences(No. KSCX1-SW-13).
摘    要:Phytoplankton assemblages in the subtrophical oligotrophic Lake Fuxian, the second deepest lake in China, were investigated monthly from September 2002 to August 2003. A total of 113 species belonging to seven phyla were identified, among them, a filamentous green alga, Mougeotia sp., dominated almost throughout the study period and comprised most of the total phytoplankton biomass.Mougeotia sp. has made a substantial development during the past decades: it was absent in 1957, only occasionally present in 1983,increased substantially in 1993, and became predominant in 2002--2003. It is likely that natural invasion of the Taihu Lake noodlefish (Neosalanx taihuensis) has led to a change of dominant herbivorous zooplankton from small to large calanoid, which has increased grazing pressure on small edible algae, and thus has indirectly favored the development of the inedible filamentous Mougeotia sp.

关 键 词:浮游植物  生物群落  贫营养化  云贵高原湖泊  亚热带
收稿时间:2004/7/16 0:00:00
修稿时间:2004/9/19 0:00:00

Present status and changes of the phytoplankton community after invasion of Neosalanx taihuensis since 1982 in a deep oligotrophic plateau lake, Lake Fuxian in the subtropical China
ZHANG Xi,XIE Ping,CHEN Fei-zhou,LI Yan-ling,LI Si-xin,GUO Ni-chun,QIN Jian-hui.Present status and changes of the phytoplankton community after invasion of Neosalanx taihuensis since 1982 in a deep oligotrophic plateau lake, Lake Fuxian in the subtropical China[J].Journal of Environmental Sciences,2005,17(3):389-394.
Authors:ZHANG Xi  XIE Ping  CHEN Fei-zhou  LI Yan-ling  LI Si-xin  GUO Ni-chun and QIN Jian-hui
Institution:Donghu Experimental Station of Lake Ecosystems, State Key Laboratory for Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
Abstract:Phytoplankton assemblages in the subtrophical oligotrophic Lake Fuxian, the second deepest lake in China, were investigated monthly from September 2002 to August 2003. A total of 113 species belonging to seven phyla were identified, among them, a filamentous green alga, Mougeotia sp., dominated almost throughout the study period and comprised most of the total phytoplankton biomass. Mougeotia sp. has made a substantial development during the past decades: it was absent in 1957, only occasionally present in 1983, increased substantially in 1993, and became predominant in 2002-2003. It is likely that natural invasion of the Taihu Lake noodlefish (Neosalanx taihuensis) has led to a change of dominant herbivorous zooplankton from small to large calanoid, which has increased grazing pressure on small edible algae, and thus has indirectly favored the development of the inedible filamentous Mougeotia sp.
Keywords:phytoplankton community  Neosalanx taihuensis  oligotrophic plateau lake
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