台湾海峡小型浮游植物的物种多样性和分布特征

在整合两岸学者有关台湾海峡的浮游植物物种多样性研究的基础上, 作者提出了一份台湾海峡小型浮游植物物种名录, 共包含620种, 并按照其生态类群和赤潮种类进行了区分。同时以1984年5月至1985年2月在福建海岸带和台湾海峡共86个观测站四个季度月浮游植物的344份调查资料为基础, 来阐明物种分布的基本格局和丰度变化的时空趋势。结果表明: 此次调查所鉴定的299种浮游植物中硅藻门为199种, 其丰度占浮游植物丰度的99.25%, 对本海区浮游植物的分布起支配作用。浮游植物的种类数和丰度年高峰均在夏季。就平面分布而言, 海峡区的种类数多于近岸区, 与海水的温度和盐度成正相关关系; 而近岸区的丰度高于海峡区, Shannon-Wiener指数和均匀度则是海峡区高于近岸区。

Species diversity and the distribution of micro-phytoplankton in the Taiwan Strait

Integrating research on phytoplankton of the Taiwan Strait by scholars from the Chinese mainland and Taiwan,we proposed a list of 620 phytoplankton species.We also identified their ecological groups and distinguished red tide species.Furthermore,based on 344 samples collected from the Taiwan Strait in four seasons from May 1984 to February 1985,we analyzed the distribution pattern of species and the spa-tio-temporal variation of species abundance.Of the 299 species identified in this survey,199 species be-longed to Bacillariophyta,whose abundance accounted for 99.25% of the total.The maximum species num-ber and abundance of phytoplankton both occurred in August,while the minimum appeared in February.Compared with coastal waters,strait waters had more phytoplankton species but lower abundance.The rela-tionships between the distribution of phytoplankton and environmental factors are also discussed.