摘要
A survey was made of the number of the heterotrophic bacteria in surface seawater of Great Wall Bay and its adjacent waters, Antarctica during the period of austral summers from Dec.1993 to Feb. 1994. The result shows that the number of the heterotrophic bacteria in the surface waterof the surveyed area is about 798 CFU. cm-3, ranging from 53 to 4 250 CFU. cm-3. Comparison of thenumbers for three months shows a declining tendency month by month. Comparing with the previous results, this one shows that the heterotrophic bacteria number changes somewhat, but slightly. It is lower than that in nearshore waters but higher than that in the open area. This shows that there is a positive correlative relationship between CFU and NH4- N, which means that heterotrophic bacteria should be an important agent in NH4-N reproduction in the environment surveyed. There is an significant negative correlation both between CFU and NOZ-N, and between CFU and PO4-P. This means that the NOZ-N, PO.-P, which were decomposed and transformed by bacteria, were used rapidly by phytoplankton.
A survey was made of the number of the heterotrophic bacteria in surface seawater of Great Wall Bay and its adjacent waters, Antarctica during the period of austral summers from Dec.1993 to Feb. 1994. The result shows that the number of the heterotrophic bacteria in the surface waterof the surveyed area is about 798 CFU. cm-3, ranging from 53 to 4 250 CFU. cm-3. Comparison of thenumbers for three months shows a declining tendency month by month. Comparing with the previous results, this one shows that the heterotrophic bacteria number changes somewhat, but slightly. It is lower than that in nearshore waters but higher than that in the open area. This shows that there is a positive correlative relationship between CFU and NH4- N, which means that heterotrophic bacteria should be an important agent in NH4-N reproduction in the environment surveyed. There is an significant negative correlation both between CFU and NOZ-N, and between CFU and PO4-P. This means that the NOZ-N, PO.-P, which were decomposed and transformed by bacteria, were used rapidly by phytoplankton.
出处
《冰川冻土》
CSCD
北大核心
1998年第4期316-319,共4页
Journal of Glaciology and Geocryology
关键词
海水
表层水
异养细菌
含量估计
南极
相关因子
heterotrophic bacteria, Great Wall Bay in Antarctica, ecological factors
