Hydrobiological Bulletin

, Volume 8, Issue 1–2, pp 232–241 | Cite as

The marine element in the fauna of the Bothnian Bay

  • Ilpo Haahtela
Autoecolovy and Diversity


  1. 1.

    The Bothnian Bay, the northernmost basin of the Baltic Sea, is a large, open and shallow water body of low salinity and of arctic character.

  2. 2.

    The most prominent components of its fauna are the limnic and genuine brackish-water species and marine glacial relicts.

  3. 3.

    Eight to ten macroscopic species of euryhaline marine invertebrates, five of which are planktonic, have a breeding stock in the area. Six to ten marine species of fish are stationary. Their distribution is limited not only by the salinity, but apparently also by the temperature and several other factors, which have not yet been studied in the Bothnian Bay.

  4. 4.

    The area is still faunistically incompletely studied. Further investigations might change the distribution limits of the marine species, but major additions into the marine element are not to be expected.



Water Body Shallow Water Distribution Limit Marine Species Marine Invertebrate 
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Copyright information

© Netherlands Hydrobiological Society 1974

Authors and Affiliations

  • Ilpo Haahtela
    • 1
    • 2
  1. 1.Department of ZoologyUniversity of TurkuTurku 50Finland
  2. 2.Tvärminne Zoological StationUniversity of HelsinkiTvärminneFinland

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