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      Ciliates are the dominant grazers on pico- and nanoplankton in a shallow, naturally highly eutrophic lake.

      Microbial Ecology
      Animals, Bacteria, growth & development, Biomass, Ciliophora, physiology, Ecosystem, Eukaryota, Eutrophication, Food Chain, Fresh Water, microbiology, parasitology, Plankton

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          Abstract

          Abundance and biomass of the microbial loop members [bacteria, heterotrophic nanoflagellates (HNF), and ciliates] were seasonally measured in the naturally eutrophic and shallow (2.8 mean depth) Lake Võrtsjärv, which has a large open surface area (average 270 km2) and highly turbid water (Secchi depth <1 m). Grazing rates (filter feeding rates) on 0.5-, 3-, and 6-microm-diameter particles were measured to estimate pico- and nanoplankton grazing (filter feeding) by micro- and metazooplankton. Among grazers, HNF had a low abundance (<50 cells mL-1) and, due to their low specific filtering rates, they only grazed a minor fraction of the bacterioplankton (

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          Author and article information

          Journal
          17186145
          10.1007/s00248-006-9155-4

          Chemistry
          Animals,Bacteria,growth & development,Biomass,Ciliophora,physiology,Ecosystem,Eukaryota,Eutrophication,Food Chain,Fresh Water,microbiology,parasitology,Plankton

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