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Evidence for a tightly coupled nanoplanktonic predator-prey link regulating the bacterivores in the marine-environment
Umeå University, Faculty of Science and Technology, Umeå Marine Sciences Centre (UMF). Umeå University, Faculty of Science and Technology, Department of Molecular Biology (Faculty of Science and Technology). (Johan Wikner ; UMFpub)
Umeå University, Faculty of Science and Technology, Department of Molecular Biology (Faculty of Science and Technology). Umeå University, Faculty of Science and Technology, Umeå Marine Sciences Centre (UMF).
1988 (English)In: Marine Ecology Progress Series, ISSN 0171-8630, E-ISSN 1616-1599, Vol. 50, no 1-2, 137-145 p.Article in journal (Refereed) Published
Abstract [en]

A coupled predator-prey chain, starting with bactenvores, was invest~gated using the mlnicell recapture technique (MiniCap) Water samples were subjected to slze fract~onation wth decreasing filter pore sue in order to obtain a successive truncation of the microbial food chaln Our results showed that the malor bacterivores were flagellates in the size range of 1 to 3 pm The truncation of the food chain caused increased or decreased predation on the bactena, d e p e n d~n go n whether the bacterivores 'ivere released from or subjected to increased predat~on pressure We present a model describing trophic interactions between organisms less than 12 pm In size This model suggests 4 trophic levels to form a regulatory chain exer t~nga tight control on major bacterivores.

Place, publisher, year, edition, pages
Oldenburg: Inter-Research , 1988. Vol. 50, no 1-2, 137-145 p.
National Category
Microbiology
Research subject
Microbiology
Identifiers
URN: urn:nbn:se:umu:diva-52560DOI: 10.3354/meps050137ISI: A1988R488000014OAI: oai:DiVA.org:umu-52560DiVA: diva2:506370
Available from: 2012-02-28 Created: 2012-02-24 Last updated: 2017-10-24Bibliographically approved
In thesis
1. Predation on marine pelagic bacteria: On the in situ rates, regulation and dynamics of bacterivory studied with a molecular genetic technique
Open this publication in new window or tab >>Predation on marine pelagic bacteria: On the in situ rates, regulation and dynamics of bacterivory studied with a molecular genetic technique
1989 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Umeå: Umeå universitet, 1989. 58 p.
Keyword
Marine, grazing, minicells, molecular genetics, method, predation rate, dynamics, bacterivore, predator-prey
National Category
Microbiology
Research subject
Microbiology
Identifiers
urn:nbn:se:umu:diva-52569 (URN)91-7174-418-5 (ISBN)
Public defence
1989-05-26, Institutionen för Mikrobiologi, Föreläsningssalen, Umeå Universitet 901 87, Umeå, 09:00 (English)
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Available from: 2012-03-05 Created: 2012-02-24 Last updated: 2012-03-05Bibliographically approved

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