九龙江口浮游软甲动物的分布

本文分析了1980及1983年两周年在九龙江口采集的样品.初步鉴定浮游软甲动物20种,中华假磷虾最占优势.总个体数一年有二个数量高峰,种数有一个高峰.按其在九龙江口平面分布可分为河口暖水性,沿岸暖水性,沿岸暖温性及大洋广暖水性四个生态类群.它们的平面和季节演替与环境因素,特别是盐度、温度和浮游植物,密切相关.

The Distribution of the Planktonic Malacostraca in the Jiulong River Estutry

This paper is based on materials collected during Aug. 1979 to Aug. 1980 and Feb. 1983 to Jan. 1984 from Jiulong River Estuary. 20 species of Malac-ostraca were identifed. Pseudeuphausia sinica was found of be the dominant. Seasonal variation in number of the Malacostraca is evident in this estuary.According to the spatial distribution, the Malacostraca found in Jiulong River Estuary can be divided into four ecological groups, i. e. estuarine warm-water, neritic warm-water, neritic warm-temperate and oceanic eurythermal warm-water. Their spatial and seasonal successions appeared to be corelated with the variation of environmental factors, especially salinity and water temperature and phytoplankton.