中国海及其邻近海域浮游介形类大尺度生态研究Ⅲ.浮游介形类的物种与生态类群多样性  

Diversities of species and ecological groups of planktonic Ostracoda C

作　　者：陈瑞祥[1] 林景宏[1] 

机构地区：[1]国家海洋局第三海洋研究所

出　　处：《生物多样性》1997年第4期257-262,共6页Biodiversity Science

基　　金：福建省自然科学基金

摘　　要：本文阐述中国海及其邻近海域浮游介形类的物种和生态类群多样性及其分布特点。本文记录浮游介形类１８３种，但各海区种数差异极大，其中，南海种数最多，达１２２种，而黄海南部和北部湾东北部的种类极少，都只有７种。同时，将浮游介形类划归４个生态类群：１．高温高盐类群，其种数最多，约占介形类总种数的４６．８％，主要分布于受暖流控制的海域；２．低盐暖水类群，其种数约占介形类总种数的３１．２％，但个体数极少，主要分布于近岸暖水区；３．广温广盐类群，种数极少，仅占介形类总种数的１．７％，但个别种类的个体数很多，在许多海区形成优势种，并常以生态交错带为其密集区和运移通道；４．低温高盐类群，由深水或较深水种构成，主要分布于５００ｍ以深海域，且个体数极少。This paper illustrates the diversity of planktonic Ostracoda species and ecological groups and their distribution features in China's seas and adjacent waters, including the Huanghai Sea, the Donghai Sea, the weatern Taiwan Strait, waters around Taiwan, Bashi Strait, the Nanhai Sea and the Beibu Bay. Based on the above description, a large scale ecological study is made. This paper records 183 species of Ostracoda, belonging to 52 genera, 8 subfamilies, 4 families and 2 suborders. The number of species varies greatly in different sea areas, with the largest number in the Nanhai Sea (122 species) and the least number in the south Huanghai Sea and the northeast Beibu Bay (7 species). This paper illustrates the diversity of ecological groups of planktonic Ostracoda in these waters and classifies them into 4 groups as follows: 1) Hyperthermal and hysaline group. As the most important group and largest number of species (accounting for 46.8% of the total number), this group is mainly distributed in the waters under the control or impact of the Kuroshio and is concentrated in the waters near the 200 m isopleth and its offshore oceanic waters. 2) Huposaline and warm water group. The number of species in this group accounts for 31.2% of the total number though the number of individual in most species is very low and the individuals are mostly distributed in the nearshore warm water. 3) Eurythermal and eurysaline group. Although this group has very low number of species as it accounts for only 1.7% of the total number, the number of individual in some individual species is always very high. Some species have become the most dominant ones in many sea areas and are concentrated and migrate in the ecologically mixing zones. 4) Hypothermal and hypersaline group. This group is composed of deepwater and relatively deepwater species and accounts for 20.2% of the total number. The group has very low number of individual and is generally distributed in the waters lower than 500 m layer, with some of species only occur in the 1000

关 键 词：介形亚纲 浮游动物 生态 物种 生态类群 多样性 

分 类 号：Q959.223.2[生物学—动物学]