摘要
报道了东南极拉斯曼丘陵中山站附近沿岸潮间带冰雪下砂和砾质砂中微小型藻类的分布、种类组成及各站间种组成的相似性．中山站附近沿岸潮间带微小型藻类具有细胞个体小、多度大等特点，小于３０ μｍ 的占８０％ 以上，每克砾砂的微小型藻类１、２ 月平均细胞多度分别为１０１１．２×１０３ 个和６６１．８２×１０３ 个，密集区分布在中山湾Ｂ站． 在已鉴定的７ 个类别５５ 属１６０ 种微小型藻类中，各站均出现的有４５ 种，其优势种为冰川舟形藻（Ｎａｖｉｃｕｌａ ｇｌａｃｉｅｉ）；
This paper first reports the composition, distribution and similarities among various flats of nano and microalgae in sand and gravel covered by ice and snow in the intertidal zones of the Zhongshan Station in Larsemann Hills(69°21′—69°25′S,76°00′—76°25′E),East Antarctica. The samples were collected from six gravel sand flats during January 1989 to February 1990. The following distributional characteristics of nano and microalgae in the intertidal zones were revealed: small cell size, high cell abundance and up to 80% of cells less than 30 μm. The average cell abundance was 1011 2×10 3 and 661 82×10 3 cells per gram of gravell sand in January and February respectively. The maximaum cell abundance of nano and microalgae occurred at station B. One hundred and sixty taxa of nano and microalgae were observed, of which, 45 species occurred at all substations, and Navicula glaciei was the dominant species.
基金
国家自然科学基金
关键词
中山站
潮间带
微小型藻类
藻类
Zhongshan Station
Intertidal zones
Gravel sand
Nano and microalgae
