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引用本文:王颖,杨桂军,秦伯强,张艳晴,许慧萍,王玉兵.太湖不同生态类型湖区浮游甲壳动物群落结构季节变化比较.湖泊科学,2014,26(5):743-750. DOI:10.18307/2014.0512
WANG Ying,YANG Guijun,QIN Boqiang,ZHANG Yanqing,XU Huiping,WANG Yubing.A comparative study on the seasonal variations of community structure of crustaceans in different ecological areas in Lake Taihu. J. Lake Sci.2014,26(5):743-750. DOI:10.18307/2014.0512
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太湖不同生态类型湖区浮游甲壳动物群落结构季节变化比较
王颖1, 杨桂军1, 秦伯强2, 张艳晴1, 许慧萍1, 王玉兵1
1.江南大学环境与土木工程学院, 无锡 214122;2.中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008
摘要:
水体富营养化会对整个水生态系统产生重要影响.为了解太湖富营养化对浮游甲壳动物群落结构的影响,于2012年3月至2013年2月对太湖3个典型湖区——藻型湖区(梅梁湾)、草型湖区(胥口湾)和强扰动湖区(湖心区)开展浮游甲壳动物群落结构季节变化比较研究.3个湖区中,湖心区营养水平最高,胥口湾最低.梅梁湾浮游甲壳动物密度和生物量最高,其次是湖心区,胥口湾最低.梅梁湾、湖心区和胥口湾的浮游甲壳动物年平均密度分别为199、150和91 ind./L,年平均生物量分别为1.950、1.557和0.743 mg/L.在整个研究期间,梅梁湾、胥口湾和湖心区的浮游甲壳动物种类数分别为13、11和11;3个湖区的浮游甲壳动物优势种均为中华窄腹剑水蚤和简弧象鼻溞,其中中华窄腹剑水蚤在梅梁湾、胥口湾和湖心区的年平均密度分别为57、25和36 ind./L,简弧象鼻溞在3个湖区的年平均密度分别为40、22和32 ind./L.胥口湾浮游甲壳动物生物多样性指数显著低于梅梁湾和湖心区.相关分析表明,浮游甲壳动物密度与叶绿素a浓度呈极显著正相关.研究表明,同一湖泊不同生态类型湖区浮游甲壳动物会对水体富营养化产生不同的生态响应.
关键词:  太湖  梅梁湾  胥口湾  浮游甲壳动物  群落结构  季节变化
DOI:10.18307/2014.0512
分类号:
基金项目:国家水体污染控制与治理科技重大专项项目(2012ZX07101-013-03,2012ZX07503-002);国家自然科学基金项目(41101053);国家自然科学基金重点项目(41230744)联合资助
A comparative study on the seasonal variations of community structure of crustaceans in different ecological areas in Lake Taihu
WANG Ying1, YANG Guijun1, QIN Boqiang2, ZHANG Yanqing1, XU Huiping1, WANG Yubing1
1.School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, P. R. China;2.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China
Abstract:
Eutrophication brings important influence on water ecosystem. In order to understand the influence of eutrophication on the community structure of crustaceans in Lake Taihu, a comparative study on the seasonal variations of crustaceans community structure of three typical lake areas in Lake Taihu, including algae-dominated lake area (Meiliang Bay), macrophytes-dominated lake area (Xukou Bay) and strongly disturbed lake area (the lake center), was undertaken from March 2012 to February 2013. The trophic level was the highest in the lake center and the lowest in Xukou Bay. The annual average abundance and biomass of crustaceans were 199 ind./L and 1.950 mg/L in Meiliang Bay, 91 ind./L and 0.743 mg/L in Xukou Bay, and 150 ind./L and 1.557 mg/L in the lake center, respectively. Thirteen crustaceans species were identified in the Meiliang Bay, and 11 in Xukou Bay and the lake center, respectively. The dominant species of crustaceans were Limnoithona sinensis and Bosmina coregoni in the three lake areas. The annual average abundance of Limnoithona sinensis were 57, 25 and 36 ind./L, and the annual average abundance of Bosmina coregoni were 40, 22 and 32 ind./L in Meiliang Bay, Xukou Bay and the lake center, respectively. The biological diversity of crustaceans in Xukou Bay was significantly lower than that in Meiliang Bay and the lake center. Correlation analysis indicated positive relationships between abundance of crustaceans and the concentration of chlorophyll-a. It was also found that response of crustaceans to eutrophication were different in different ecological areas in Lake Taihu.
Key words:  Lake Taihu  Meiliang Bay  Xukou Bay  crustaceans  community structure  seasonal variation
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