南极乔治王岛长城湾沿岸固定冰中有色层生态观察  

ECOLOGICAL OBSERVATIONS ON COLOURED LAYER OF COASTAL FAST ICE IN GREAT WALL BAY,KING GEORGE ISLAND, ANTARCTICA

作　　者：吕培顶[1] 张坤诚 黄风鹏 渡边研太郎 

机构地区：[1]国家海洋局第一海洋研究所,青岛266003 [2]日本国立极地研究所

出　　处：《南极研究》1991年第3期56-63,共8页

摘　　要：自1988年11月至1989年3月,对南极乔治王岛的长城湾沿岸水域中的海洋生物和环境因子进行了调查,1988年11月20日在2号站采得的冰芯中部有一层约5cm的棕色层,而1988年11月17日、20日和26日在5号站采得的冰芯样中有二层棕色层。固定冰中叶绿素a浓度范围在2.55～56.8mg/m^3之间,而且大部分含量集中在海冰的中间层中,而不象其它海区如昭和、戴维斯、凯西和麦克默多等站,大部分叶绿素a集中在海冰的底部,造成这种差别的原因、可能是由于海冰的结构和形成过程不同所致。Marine biological and environmental investigations were carried out on the coastal water of Great Wail Station(62°13'S, 58°58 W) on King George Island, Antarctica, from November 17, 1988, to March 3, 1989. Coastal fast ice covered inner part of Great Wall Bay until mid-December 1988, which allowed us to take ice core sampling and observations from mid-November to early December 1988. During thisperiod, ice thickness ranged from 90 to 70 cm with about 20 cm of snow cover. About 5cm brown layer occured in the middle part of fast ice core collected on November 20, 1988 at site 2, and two brown layers occured in the interior of ice core collected on November 17,20 and 26, 1988 at site 5. In comparison to the water column, chlorophyll-a concentration in fast ice was higher, which ranged from 2.55 go 56.84mg/M3, and most of them were concentrated in the interior layers of sea ice rather than in the bottom layer often observed in other sea ice areas, such as in Syowa, Davis, Casey Station and McMurdo Sound areas, etc. This might be a result of the difference in structure and formation processes of sea ice. Meanwhile, temperature, transparency, nutrients and chlorophyll-α in water column were measured. Microalgal assemblages both in fast ice and water column of Great Wall Bay were reported.

关 键 词：固定冰 有色层 冰藻 南极 生物 

分 类 号：P714.5[天文地球—海洋科学]