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      The role of iceberg scours in niche separation within the Antarctic fish genus Trematomus

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      General Information:

      Citation:
      Brenner, M. , Buck, B. H. , Cordes, S. , Dietrich, L. , Jacob, U. , Mintenbeck, K. , Schröder, A. , Brey, T. , Knust, R. and Arntz, W. (2001): The role of iceberg scours in niche separation within the Antarctic fish genus Trematomus , Polar biology, 24 , pp. 502-507 . doi: 10.1007/s003000100246
      Cite this page as:
      hdl:10013/epic.11036
      DOI:
      https://doi.org/10.1007/s003000100246
      Official URL:
      https://doi.org/10.1007/s003000100246
      Contact Email:
      tbrey@awi-bremerhaven.de
      Related Data:

      Platform/Expeditions:
      • ANT-XV/3
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      Cite this document as:
      hdl:10013/epic.11036.d001
      Abstract:

      Species of the Antarctic fish genus Trematomus occupy different trophic niches. It is not clear, however, whether small-scale variability in benthic community structure affects niche separation. Therefore abundance and biomass of fish were determined and stomach content and food composition was compared in areas affected by iceberg scours and unaffected areas in the Weddell Sea. T. eulepidotus, T. lepidorhinus and T. scotti dominate undisturbed areas, whereas T. nicolai and especially T. pennellii dominate disturbed areas. Total stomach content and number of prey taxa per fish are higher in preferred than in non-preferred areas. These findings indicate that small-scale horizontal patterns caused by iceberg scours play a distinct role in Trematomus niche separation.

      Further Details:

      Item Type:
      Article
      Authors:
      Brenner, Matthias ; Buck, Bela H. ; Cordes, S. ; Dietrich, L. ; Jacob, Ute ; Mintenbeck, Katja ; Schröder, Alexander ; Brey, Thomas ; Knust, Rainer ; Arntz, Wolf
      Programs:
      Basic Research > Helmholtz Independent Research
      Eprint ID:
      446
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