摘要
本文根据我国各海区近700个表层样品定性、定量分析的结果,讨论了介形虫数量与属种的分布。介形虫的种数与个数具有由南向北、由河口海岸到陆架外缘随水深变大而增加的趋势。按照在各种温度、盐度、深度条件下不同属种的数量分布,划分出暖水、凉水和广温种,少盐-中盐、中盐-真盐、多盐-真盐与广盐种,以及五个不同深度带的种。在控制介形虫分布的各项环境因素中,盐度是河口、海岸区的主导因素,温度在陆架浅海区起决定作用,深度则结合其它因素起控制作用。
Distribution of ostracod specimens and species numbers was studied in about 700 surface sediment samples taken from various shelf sea areas off China,including supralittoral,littoral,lagoonal,estuarine and shelf zones(Tab.1).As shown by statistics(Tab.2,Figs.1,2),both abundance and species diversity tend to increase from the north to the south and from coast to the outer edge of continental shelf with increasing water depth.In accordance to the distribution patterns of common forms,several groups of ostracod species can be distinguished,such as warm-water,cool-water and eurythermal species(Figs.3,4),oligo-to mesohaline,meso-to eu-haline,poly-to eu-haline and euryhaline species(Fig.5),and five groups related to different depth ranges(Fig.6).
作者
赵泉鸿
汪品先
Zhao Quanhong;Wang Pinxian(Tongji University,Shanghai)
出处
《海洋与湖沼》
1988年第6期553-561,共9页
Oceanologia Et Limnologia Sinica
