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  • Author: Möller, Klas O.

    Institute for Hydrobiology and Fisheries Science, Center for Earth System Research and Sustainability (CEN),KlimaCampus, University of Hamburg , Germany

  • Author: St. John, Michael

    Section for Population Ecology and Genetics, National Institute of Aquatic Resources, Technical University of Denmark, Charlottenlund Slot Jægersborg Allé 1, 2920, Charlottenlund, Denmark

  • Author: Temming, Axel

    Institute for Hydrobiology and Fisheries Science, Center for Earth System Research and Sustainability (CEN), KlimaCampus, University of Hamburg, Germany

  • Author: Floeter, Jens

    Institute for Hydrobiology and Fisheries Science, Center for Earth System Research and Sustainability (CEN), KlimaCampus, University of Hamburg, Germany

  • Author: Sell, Anne F.

    Johann Heinrich von Thünen-Institut, Institute of Sea Fisheries, Germany

  • Author: Herrmann, Jens Peter

    Institute for Hydrobiology and Fisheries Science, Center for Earth System Research and Sustainability (CEN),KlimaCampus, University of Hamburg , Germany

  • Author: Möllmann, Christian

    Institute for Hydrobiology and Fisheries Science, Center for Earth System Research and Sustainability (CEN),KlimaCampus, University of Hamburg , Germany

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Marine aggregates of biogenic origin, known as marine snow, are considered to play a major role in the ocean’s particle flux and may represent a concentrated food source for zooplankton. However, observing the marine snow−zooplankton interaction in the field is difficult since conventional net sampling does not collect marine snow quantitatively and cannot resolve so-called thin layers in which this interaction occurs. Hence, field evidence for the importance of the marine snow−zooplankton link is scarce. Here we employed a Video Plankton Recorder (VPR) to quantify small-scale (metres) vertical distribution patterns of fragile marine snow aggregates and zooplankton in the Baltic Sea during late spring 2002. By using this non-invasive optical sampling technique we recorded a peak in copepod abundance (ca. 18 ind. l−1) associated with a pronounced thin layer (50 to 55 m) of marine snow (maximum abundance of 28 particles l−1), a feature rarely resolved. We provide indirect evidence of copepods feeding on marine snow by computing a spatial overlap index that indicated a strong positively correlated distribution pattern within the thin layer. Furthermore we recorded images of copepods attached to aggregates and demonstrating
feeding behaviour, which also suggests a trophic interaction. Our observations highlight the potential significance of marine snow in marine ecosystems and its potential as a food resource for various trophic levels, from bacteria up to fish
Original languageEnglish
JournalMarine Ecology Progress Series
Publication date2012
Volume468
Pages57-69
ISSN0171-8630
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 2
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