Historical changes of phytoplankton functional groups in Lake Fuxian,Lake Erhai and Lake Dianchi since 1960s
Historical changes of phytoplankton functional groups in Lake Fuxian,Lake Erhai and Lake Dianchi since 1960s
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DOI：
10.18307/2014.0511
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Dong Jing;Li Genbao;Song Lirong
中科院分区：
文献类型：
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作者：
Dong Jing;Li Genbao;Song Lirong
浮游植物是主要的初级生产者之一，在水生生态系统中发挥着重要作用。藻类的时空变化可以反映环境动态。针对藻类的形态、生理和生态特征，首次将浮游植物功能群理论应用于这些湖泊，详细描述了藻类的耐受性和偏好性。浮游植物组合被认为是环境条件的良好指标。分别采集并分析了抚仙湖、洱海和滇池1960年代以来的浮游植物组成数据。 60年来，三湖浮游植物群落发生了巨大变化。抚仙湖优势浮游植物功能群的历史变化表现为C,X2,Lo,F,P(1960年代)-H1,C,P(1980年代)-P,C,T(1990年代)-T(2000年后); J,Lo,MP,C,H1(1960年代)-C,H1(1980年代)-C,H1(1990年代)-C,H1,M(2000年后)对于洱海; J,N,P,MP,Lo(1960年代)-J,P,MP,M(1980年代)-J,M(1990年代)-M(2000年后)对于滇池。自 1960 年代起，耐低温物种的减少和高营养偏好物种的增加可能预示着三个湖泊温度升高和营养物质增加的环境变化。
Phytoplankton is one of the major primary producers and plays important roles in the aquatic ecosystems. The temporal and spatial variations of the algae could reflect the environmental dynamics. In light of the morphological,physiological and ecological characteristics of algae,phytoplankton functional groups theory was applied first time for these lakes to describe the tolerance and preference of algae in detail. The phytoplankton assemblages were considered to be good indicators of environmental conditions. The data of phytoplankton composition dated from the 1960 s was collected and analyzed for Lake Fuxian,Lake Erhai and Lake Dianchi,respectively. Great changes have taken place in phytoplankton assemblages in the three lakes during the past 60 years. The historical change of dominant phytoplankton functional groups was demonstrated as C,X2,Lo,F,P( 1960s)-H1,C,P( 1980s)- P,C,T( 1990s)-T( after 2000) for Lake Fuxian; J,Lo,MP,C,H1( 1960s)-C,H1( 1980s)-C,H1( 1990s)-C,H1,M( after 2000) for Lake Erhai; J,N,P,MP,Lo( 1960s)-J,P,MP,M( 1980s)-J,M( 1990s)-M( after 2000) for Lake Dianchi. The reduction of low-temperature tolerance species and increase of high-nutrition preference species dated from the 1960 s might give some indication of the environmental changes of warmer temperature and nutrients increases in the three lakes.