福建罗源湾浮游桡足类的分布

Distribution of pelagic copepods in Luoyuan Bay, Fujian

本文利用1986年11月至1987年10月在福建罗源湾采集的浮游生物样品,分析研究了该海区桡足类的种类组成和数量分布。结果表明,其优势种大网为中华哲水蚤、亚强真哲水蚤、真刺唇角水蚤和太平洋纺锤水蚤,中网为强额拟哲水蚤、小型拟哲水蚤、短角长腹剑水蚤。桡足类总量年高峰大、中网分别为2个和1个。中网桡足类与叶绿素a、温度和盐度等因素显著相关。

During the period from November 1986 to October 1987 materials were collected at ten stations in the Louyuan Bay. Altogether, 85 species of copepods were found in the survey region. The Calanus sinicus, Eucalanus subcrassus, Labidocera euchaeta and Acartia pacifica were dominant in the large planktonic net and Paracalanus crassirostris, P. parvus, Oithona brevicornis in the midium one.The seasonal distribution of total abundance of the copepods in the large net have two peaks and one peat in midium net. From the bay head to the mouth, the total abandance of copepods decreases gradually. The effects of Chlorophyll-a, temperature and salinity on the total abundance of copepods in midium net were very signiticant.