南极长城湾及其附近水域浮游动物的种类组成和数量变化

初步鉴定南极长城湾及其附近水域浮游动物 3 5种。南极种挠足类 Calanus propinquus、Calanoidesacutus、Metrdia gerlachei和南极磷虾幼体为调查区的优势种。结果表明 ,调查水域浮游动物种类单纯 ,符合南极水域浮游动物分布的一般规律。调查水域浮游动物总生物量和个体数量具明显的季节变化。夏季主要有 Calanioidisacatus和南极磷虾幼体组成 ,冬季主要有 Metr-dia gerlacher、Calanus propinquus、Oithon similis、O.frigda及南极磷虾幼体组成。挠足类拟成体的数量在各月份中占相当大的比例。水温是制约浮游动物生物量的重要因素。

SPECIES COMPOSITION AND QUANTITATIVE VARIATION OF ZOOPLANKTON IN THE GREAT WALL BAY,ANTARCTICA AND ITS ADJACENT WATERS

A preliminary identification has been made of 35 species of the zooplankton in the Great Wall Bay, Antarctica and its adjacent waters.The dominant species in the investigated area are Calanus propinquus,Calanoides acutus, Metrdia gerlachei and the larvae of antarctic krill. The results indicated that the zooplankton of the investigated waters were simple in species number, which conforms to the general pattern of the distribution of the zooplankton in Antartic waters. The total biomass and number of individuals of the zooplankton in the investigated waters showed obvious seasonal variation. In summer there were Calanioides acutus and the larvae of antarctic krill; in winter there were Metrdia gerlacher, Calanus propinquus, Oithon similis, O.frigda and the larvae of antarctic krill. The quantity of Copepoda occupied a considerable proportion in each month.The water temperature is the important factors in controling the biomass of zooplankton.