摘要
根据2009年5月和8月在苏北浅滩33°04′-33°12′、121°02′-121°12′水域两个航次浮游动物调查,分析了该水域春夏季浮游动物数量分布、种类组成和优势种特征。结果表明,该区浮游动物优势种季节演替明显,春季（5月）主要优势种为真刺唇角水蚤（Labidocera euchaeta）、小拟哲水蚤（Paracalanus parvus）、左突唇角水蚤（L.sinilobata）、中华哲水蚤（Calanussinicus）;夏季（8月）主要优势种为真刺唇角水蚤、百陶箭虫（Sagitta bedoti）、太平洋纺锤水蚤（Acartia pacifica）。各优势种的季节变化主要受温度影响,呈现夏季暖温种减少、暖水种增多的趋势。春、夏季浮游动物平均生物量分别为1 091.23 mg/m3和487.11 mg/m3,平均丰度为1 855.59个/m3和871.37个/m3,春季生物量和丰度都明显高于夏季。苏北浅滩大丰水域春夏季浮游动物数量较高,生物多样性好,群落结构稳定,可为该区各种鱼类及其仔稚幼鱼提供丰富饵料,是鱼类良好的产卵和育幼场所。
Based on the zooplankton samples collected from the middle area of Subei Shoal（33°04′～33°12′,121°02′～121°12′） during May Aug 2009,the ecological characters of zooplankton in the area were studied,such as the quantity,dominant species and season changes.The result showed that the succession of dominant species in the two seasons was obvious.Labidocera euchaeta,Paracalanus parvus,L.sinilobata and Calanus sinicus were the primary dominant species in spring（May）.L.euchaeta,Sagitta bedoti,Acartia pacifica were the primary species in summer（Aug.）.The seasonal variations of dominant species were mainly determined by the change of temperature.In summer the species were decreased and the warm water species added.The average biomass of zooplankton was 1 091.23 mg/m3 in spring and 487.11 mg/m3 in summer.Moreover,the average abundance of zooplankton was 1 855.59 d/m3 in spring and 871.37 d/m3 in summer.According to the large quantity and high diversity of zooplankton in the studied area,in Subei Shoal,some fishes＇ spawning and nursing grounds provided the abundant food for the fish larvae and juveniles.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2011年第3期316-320,共5页
Marine Environmental Science
基金
国家重点基础研究发展计划(973计划)项目(2010CB428705)
国家自然科学基金项目(40776077)
关键词
浮游动物
苏北浅滩
生态特征
zooplankton
dominant species
ecological characters
season changes
Subei Shoal
