Zooplankton response to the lake restoration in the drinking-water source in Meiliang Bay of subtropical eutrophic Lake Taihu, China
Zooplankton response to the lake restoration in the drinking-water source in Meiliang Bay of subtropical eutrophic Lake Taihu, China
复制标题
亚热带富营养化太湖梅梁湾饮用水水源地浮游动物对湖泊修复的响应
DOI：
10.1016/j.limno.2011.11.001
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发表时间：
2012-09-01
期刊：
影响因子：
1.7
通讯作者：
Li, Jing
中科院分区：
文献类型：
--
作者：
Chen, Feizhou;Ye, Jialin;Li, Jing
2003 - 2005年对太湖梅梁湾饮用水源地进行了为期3年的生态工程研究。项目区域分为三个区域：C区（区域外），B区（区域内的远洋部分）和A区（区域内的滨海部分）。作为湖泊恢复研究的一部分，研究了浮游动物的群落组成、密度和生物量。同时，每年对工程区内A区（滨海区）鱼类的丰度、生物量和组成进行分析。枝海类的平均密度由湖外向湖内递减，即从C区向A区递减，而桡足类的平均密度在3个区间差异不显著。从C区到a区，轮虫和纤毛虫的平均密度逐渐增大。RDA分析表明，温度升高后，微囊藻生物量对浮游动物组成的影响更大。在A区，以Cala nasus、Hemiculter leucisculus、Pseudorasbora parva等多种浮游鱼类为主，致使尾海动物丰度明显减少，尤其是大型尾海水蚤和钝尾水蚤。结果表明，在亚热带富营养化湖泊恢复过程中，鱼类捕食和微囊藻华等环境因素对浮游动物群落的影响较大。(C) 2011爱思唯尔有限公司版权所有。
A 3-year ecological engineering project was carried out from 2003 to 2005 in the drinking water source in Meiliang Bay, Lake Taihu, China. The project area was divided into three zones: Zone C (outside the area), Zone B (pelagic part within the area) and Zone A (littoral part within the area). The community composition, density and biomass of zooplankton were studied as a part in the lake restoration study. Also, the abundance, biomass and composition of fish in the engineering area were annually analyzed in the littoral zone (Zone A). The average density of cladocerans decreased from the outer part to the inner part of the lake, i.e., from Zone C to Zone A, while the average density of copepod did not significantly vary among the 3 zones. The average densities of rotifer and ciliate increased from Zone C to Zone A. RDA analysis indicated that Microcystis biomass more impacted the zooplankton compositions after temperature. In Zone A, many planktivorous fishes, e.g., Cala nasus, Hemiculter leucisculus, Pseudorasbora parva, dominated the fish community, which caused a marked decrease in the abundance of cladocerans, especially large-sized cladoceran Daphnia galeata and Daphnia obtusa. Our results suggested that both fish predation and other environmental factors such as the Microcystis bloom greatly affected the zooplankton community during the restoration of subtropical eutrophic lakes. (C) 2011 Elsevier GmbH. All rights reserved.