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ZOOPLANKTON-MEDIATED CHANGES OF BACTERIAL COMMUNITY STRUCTURE
JURGENS, K; ARNDT, H; ROTHHAUPT, KO
1994
发表期刊MICROBIAL ECOLOGY
ISSN0095-3628
卷号27期号:1页码:27-42
摘要Enclosure experiments in the mesotrophic Schohsee in northern Germany were designed to study the impact of metazooplankton on components of the microbial food web (bacteria, flagellates, ciliates). Zooplankton was manipulated in 500-liter epilimnetic mesocosms so that either Daphnia or copepods were dominating, or metazooplankton was virtually absent. The bacterial community responded immediately to changes in zooplankton composition. Biomass, productivity, and especially the morphology of the bacteria changed drastically in the different treatments. Cascading predation effects on the bacterioplankton were transmitted mainly by phagotrophic protozoans which had changed in species composition and biomass. When Daphnia dominated, protozoans were largely suppressed and the original morphological structure of the bacteria (mainly small rods and cocci) remained throughout the experiment. Dominance of copepods or the absence of metazoan predators resulted in a mass appearance of bacterivorous protists (flagellates and ciliates). They promoted a fast decline of bacterial abundance and a shift to the predominance of morphologically inedible forms, mainly long filaments. After 3 days they formed 80-90% of the bacterial biomass. The results indicate that metazooplankton predation on phagotrophic protozoans is a key mechanism for the regulation of bacterioplankton density and community structure.
部门归属INST LIMNOL,A-5310 MONDSEE,AUSTRIA
学科领域Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Microbiology
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语种英语
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/9332
专题海洋微食物网高被引文献
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JURGENS, K,ARNDT, H,ROTHHAUPT, KO. ZOOPLANKTON-MEDIATED CHANGES OF BACTERIAL COMMUNITY STRUCTURE[J]. MICROBIAL ECOLOGY,1994,27(1):27-42.
APA JURGENS, K,ARNDT, H,&ROTHHAUPT, KO.(1994).ZOOPLANKTON-MEDIATED CHANGES OF BACTERIAL COMMUNITY STRUCTURE.MICROBIAL ECOLOGY,27(1),27-42.
MLA JURGENS, K,et al."ZOOPLANKTON-MEDIATED CHANGES OF BACTERIAL COMMUNITY STRUCTURE".MICROBIAL ECOLOGY 27.1(1994):27-42.
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