摘要
对杭州湾软相潮间带周年调查，共获底栖动物９５种，以甲壳动物（３４种）、鱼类（２８种）、软体动物（２１种）占绝对优势。生态类群以我国沿岸广温广盐性种和半成水特有种为主，生活方式多为活动性和埋栖类型。这与杭州湾水域盐度低且变化幅度大及动力作用强，底质不稳定等因素密切相关。从湾底到湾口，底栖动物种类增多，组成类群逐渐从低盐的河口种向广盐的海洋种演替，表现出明显的湾性分布。种类的垂直分布是中潮区大于低潮区大于高潮区，各类群生物在潮间带呈现随机镶嵌分布，无明显的分带现象。种数的季节分布呈现更、秋两季较多、冬季最少的特点。
A yearly benthic survey has been conducted in order to explore soft phase intertidal ecology along Hangzhou Bay. Firstly, this paper reports the soft phase intertidal ecology of the bay. A total of 95 species of macrobenthos are identified, including crustacean (34 species),fish (28 species) and mollusca (21 species). Most of them are eurythermous species and semisalt-water species. and their life style is a type of moving and living in soil. They are closely related to the low-salinity, strong tidal action and poor organic material of the bay. From the bottom to the mouth of the bay, the variety of benthonic animal is increasing. In the compositive groups, there is a gradual succession towards euryhaline marine species from the species of river mouth of low-salinity. An evident bay nature distribution is shown. The vertical distribution has shown that the number of species in middle tide region>low tide region>high tide region. Various groups of living things in intertidal zone present a random mosaic distribution,without any evident zonation. In seasonal distributions, the number of species in Summer and Fall is larger, and it becomes least in Winter.
出处
《东海海洋》
1996年第4期1-11,共11页
Donghai Marine Science
关键词
杭州湾
潮间带
种类组成
生态学
底栖动物
Hangzhou Bay, macrobenthos, intertidal ecology, composition of species, distribution of species
