BACTERIOPLANKTON GROWTH AND PRODUCTION AT THE LOUISIANA HYDROCARBON SEEPS

被引:20
作者
LAROCK, PA [1 ]
HYUN, JH [1 ]
BENNISON, BW [1 ]
机构
[1] FLORIDA STATE UNIV,DEPT BIOL SCI,TALLAHASSEE,FL 32306
关键词
D O I
10.1007/BF01203721
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The growth rate and potential production of bacterioplankton in cold hydrocarbon seeps located along the Louisiana coast were determined using a pulse-labeling technique. Surprisingly, community doubling times are on the order of 1.1 h, which compares to laboratory-grown cultures. We also found that there are differences in growth rates on relatively small geographic scales, suggesting the influence of site-specific geological features (e.g., gas hydrate mounds). Proceeding downslope to deeper waters, methane-oxidizing bacteria appeared to play a more significant role in community productivity. These preliminary experiments indicated, quite unexpectedly, that water column microbes are growing at a more rapid rate than in any other marine system so far studied and that methane may serve as a primary nutrient (carbon) source in these seep-associated microbial assemblages.
引用
收藏
页码:104 / 109
页数:6
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