| Summary: | 对1999年春季采集于北极拉普捷夫海东南部的冰藻和冰下浮游植物群落的种类组成进行了分析,并对丰度和生物量进行了统计和对比。藻种以硅藻占绝对优势,其中又以羽纹硅藻为主。优势种集中,主要包括海洋拟脆杆藻(Fragilariopsisoceanica)、圆柱拟脆杆藻(F.cylindrus)、寒冷菱形藻(Nitzschiafrigida)、普罗马勒菱形藻(N. promare)、带纹曲壳藻(Ach nanthestaeniata)、新寒冷菱形藻(Nitzschianeofrigida)、大洋舟形藻(Naviculapelagica)、范氏舟形藻(N. vanhoeffenii)、北极直链藻(Melosiraarctica)、北方舟形藻(N. septentrionalis)、新月细柱藻(Clindrothecaclosterium)和绿藻门的塔形藻(Pyramimonassp. )。微藻主要集中在冰底10cm,丰度为14. 6—1562. 2×104 cells·L-1,平均为639. 0×104 cells·L-1;生物量为7. 89—2093. 5μgC·L-1,平均为886. 9μgC·L-1,总体上比次冰底. 【英文摘要】 Species composition, abundance and biomass of ice algal and underlying phytoplankton communities were investigated in southeastern Laptev Sea in spring 1999. Diatoms were predominant in algal species and pennate diatoms were dominant in diatom species. 12 dominant algal species occurred in ice and underlying water column, which included Fragilariopsis oceanica, F. cylindrus, Nitzschia frigida, N. promare, Achnanthes taeniata, Nitzschia neofrigida, Navicula pelagica, N. vanhoeffenii, N. septentrionalis, Melo. 国家自然科学基金(40006010,30270112);; 科技部科技基础性工作专项项目 (2003DEB5J057);; 国家海洋局青年海洋科学基金(2003122)项目资助
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