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学科主题: Marine & Freshwater Biology; Oceanography
题名: PROTOZOAN CONTROL OF BACTERIAL ABUNDANCES IN FRESH-WATER
作者: BERNINGER, UG ; FINLAY, BJ ; KUUPPOLEINIKKI, P
刊名: LIMNOLOGY AND OCEANOGRAPHY
发表日期: 1991-01-01
卷: 36, 期:1, 页:139-147
部门归属: FREE UNIV BERLIN,INST ZOOL,W-1000 BERLIN 33,GERMANY; TVARMINNE ZOOL STN,SF-10900 HANKO,FINLAND
英文摘要: We have quantified the bacteria, heterotrophic nanoplankton (HNAN), and other microorganisms in 108 lakes, ponds, rivers, and bogs worldwide. These water bodies span the range of biological productivities in freshwater. Numbers of HNAN and bacteria are correlated over four orders of magnitude in each (3 x 10(2) to 4 x 10(6) ml-1 and 3 x 10(5) to 1 x 10(9) ml-1, respectively) and both increase with the productivity of the water body. Most HNAN are small (2-5-mu-m), colorless, flagellated protists. They grow at about the same rate as bacteria (mu = 0.01-0.02 h-1) and are capable of consuming the entire bacterial production. We suggest that bacterial abundances are regulated by substrate supply and HNAN grazing pressure. Ciliates and other grazing microzooplankton probably limit HNAN abundance, especially in the more productive water bodies. The structure and function of microbial food webs in freshwater environments may thus be similar to those suggested for marine systems.
语种: 英语
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/9292
Appears in Collections:海洋微食物网高被引文献_期刊论文

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BERNINGER, UG; FINLAY, BJ; KUUPPOLEINIKKI, P.PROTOZOAN CONTROL OF BACTERIAL ABUNDANCES IN FRESH-WATER,LIMNOLOGY AND OCEANOGRAPHY,1991,36(1):139-147
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