| 长江口九段沙湿地不同生境中大型底栖动物群落结构特征分析 |
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| 引用本文： | 周晓,王天厚,葛振鸣,施文彧,周立晨.长江口九段沙湿地不同生境中大型底栖动物群落结构特征分析[J].生物多样性,2006,14(2):165-171. |
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| 作者姓名： | 周晓 王天厚 葛振鸣 施文彧 周立晨 |
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| 作者单位： | 华东师范大学生命科学学院,上海市城市化生态过程与生态恢复重点实验室,上海,200062 |
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| 基金项目： | 上海市科委资助项目;上海市重点学科建设项目;国家"211工程"重点学科建设项目 |
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| 摘 要： | 2004年10月至2005年1月对九段沙湿地大型底栖动物的群落分布特征及环境因子进行了调查。选取6种主要生境的57个样方,分析大型底栖动物的种类、密度、生物量、多样性指数及均匀度指数等群落特征。共记录到28种大型底栖动物,主要由甲壳动物、环节动物、软体动物及昆虫幼体组成,优势种为谭氏泥蟹(Ilyrplaxdeschampsi)、光滑狭口螺(Stenothyraglabra)、堇拟沼螺(Assimineaviolacea)、绯拟沼螺(A.latericea)和霍甫水丝蚓(Limnodriuhoffmeisteri)。6种生境类型中以低潮位光滩大型底栖动物种类最为丰富,但其密度最低;海三棱藨草(Scirpusmariqueter)带底栖动物密度最高,并且其均匀度与其他生境存在显著差异;互花米草(Spartinaalterniflora)带下底栖动物的种类组成与其他生境有一定差异,但种类数、密度和多样性处于平均水平,总体群落结构没有显著差异。
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| 关 键 词： | 九段沙湿地 大型底栖动物 多样性 土壤因子 互花米草 |
| 收稿时间： | 2005-03-25 |
| 修稿时间： | 2005-09-22 |
Impact of Spartina alterniflora invasion on the macrobethos community of Jiuduansha's intertidal mudflat in the Yangtze River estuary |
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| Xiao Zhou,Tianhou Wang,Zhenming Ge,Wenyu Shi,Lichen Zhou.Impact of Spartina alterniflora invasion on the macrobethos community of Jiuduansha''''s intertidal mudflat in the Yangtze River estuary[J].Biodiversity Science,2006,14(2):165-171. |
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| Authors: | Xiao Zhou Tianhou Wang Zhenming Ge Wenyu Shi Lichen Zhou |
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| Affiliation: | School of Life Sciences, Shanghai Key Laboratory of Urbanization and Ecological Restoration, East China Normal University, Shanghai 200062 |
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| Abstract: | In order to reveal the impacts of Spartina alterniflora invasion on macrobethos communities, dur-ing October 2004 to January 2005, we studied the distribution pattern of macrobenthos and its correlation with soil factors in Jiuduansha intertidal mudflat of the Yangtze River estuary. We selected 57 sample sites representing six habitat types, i.e., Phragmites australis, Scirpus mariqueter, S. triqueter, and Spartina al-terniflora plant communities, and low tidal and high tidal mudflats. A total of 28 macrobethos species were found, consisting of Mollusca, Annelida, Crustacea, and Insect larva, with the dominant species being Stenothyra glabra, Assiminea violacea, A. latericea, Limnodriu hoffmeisteri, and Ilyrplax deschampsi. The low tidal mudflat supported more species abundance of macrobenthos, but low density, whereas the habitat of Scirpus mariqueter held the highest density. Statistical analysis demonstrated that Pielou evenness index sig-nificantly differed between bulrush areas (Scirpus mariqueter) and other habitat types. Further analysis re-vealed that habitat dominated by the invasive species Spartina alterniflora supported average species rich-ness and density of macrobenthos, although some species were absent. |
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| Keywords: | Jiuduansha wetlands macrobenthos diversity soil factors Spartina alterniflora |
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