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对2002年12月象山港海区的浮游动物种类组成和数量分布特征及其与环境的关系进行了研究。结果表明,象山港海区出现浮游动物44种,可以划分为4个生态类群,其中近岸低盐性类群的种类较多,其优势种有真刺唇角水蚤Labidoceraeuchaeta、驼背隆哲水蚤Acro-calanusgibber、中华哲水蚤Calanussinicus、中华假磷虾Pseudeuphausiasinica和拿卡箭虫Sagittanagae等,半咸水河口类群、暖水性外海类群和广盐暖水性类群的种数均较少。浮游动物生物量的分布趋势与丰度的一致。湾顶部水域浮游动物的生物量和丰度都出现最高值,从湾顶部往湾口方向,浮游动物的生物量和丰度均呈逐渐降低的趋势。象山港海区周日连续站观测的结果显示,夜间半日潮时浮游动物的生物量和丰度均高于白昼半日潮时,低平潮时浮游动物的生物量与丰度均出现了最高值。
The species composition, quantitative distribution of zooplankton and its relationship with environment in Xiangshan Harbor of December 2002 were studied. The results showed that there were 44 species of zooplankton in Xiangshan Harbor, which could be divided into four ecological groups. Among them, there were more types of low-salinity in the nearshore, and the dominant species were Labidoceraeuchaeta, Acro Calanussinicus, Pseudeuphausiasinica, Sagittanagae, etc., but less in the brackish water estuarine, warm-temperate and warm saline groups. The trend and abundance of zooplankton biomass are consistent. The biomass and abundance of zooplankton in the top of the bay all showed the highest values. From the top of the bay to the mouth of the bay, the biomass and abundance of zooplankton tended to decrease gradually. The observation of the continuous stations on Sunday in Xiangshan Harbor showed that the biomass and abundance of zooplankton during the nighttime half day tide were higher than those during the daytime, and the highest biomass and abundance of zooplankton appeared at low tide.