摘要
于2007年8月至2008年5月,对筼筜湖外湖深水区(YD-Ⅰ)、内湖(YD-Ⅱ)及干渠浅水区(YD-Ⅲ)3个调查站位进行冬、春、夏、秋4个生物季节的大型底栖生物调查,调查共鉴定大型底栖生物(Macrobenthos)9种,隶属于3门3纲8科9属。其中多毛类种数最多,达5种,双壳类软体动物2种及端足类甲壳动物2种。小头虫(Capitella capitata Fabricius)和腺带刺沙蚕(Neaethes glandicincta Southern)2种多毛类是筼筜湖底栖生物群落的优势种群。筼筜湖年总生物量为59.83g/m2,总栖息密度为1168个/m2。三个站位四季总体上内湖(YD-Ⅱ)的多样性指数(H′),均匀度指数(J)丰富度指数(d)和优势度指数(D2)相对较高,外湖(YD-Ⅰ)及干渠浅水区(YD-Ⅲ)的各项生态特征指数明显较低,筼筜湖底栖生物群落组成、结构、时空变化与环境密切相关,湖区生境脆弱。
Three stations were established to investigate the macrnhenthos in Yuandang Lake in Xiamen during the period of August 2007 and May 2008. Three stations were deep water district of lake （ YD- Ⅰ ）, interior lake （ YD- Ⅱ ） and shallow water of district of trunk （ YD- Ⅲ ）. A total of 9 species were identified in the macrobenthos, which belong to 3 phyla, 3 classes, 8 families and 9 genera, among which there were 5 species of Polychaeta, 2 species of Mollusca, and 2 species of Amphipoda. Capitella capitata （Fabrieius） and Neaethes glandicineta （Southern） are the dominant species in benthic community. The total biomass is 59. 83g/m^2, and the total inhabited density is 1168ind./m^2. Shannon-Wiener information index diversity （H＇）, Pielou＇s evenness index （J）, Margalef＇s species richness index （d）, and Simpson＇s dominance index （D2 ） of species in YD-Ⅱ were higher than other stations. Benthic community composition, structure, and spatio-temporal variation closely related to the environment in Yuandang Lake. The ecological environment of Yuandang Lake is frangible.
出处
《福建水产》
2009年第2期18-23,共6页
Journal of Fujian Fisheries
