, Volume 451, Issue 1–3, pp 69–87 | Cite as

Pelagic coelenterates and eutrophication: a review

  • Mary N. Arai


Although eutrophication is a widespread problem in marine waters, its effects are often difficult to separate from normal fluctuations of pelagic coelenterate populations and from other anthropogenic changes due to industrial pollution, construction, introductions, global warming and overfishing. The least complex situations are in small coastal water bodies such as the Caribbean lagoons and Scandinavian fjords. Typically, the diversity of pelagic coelenterates decreases, but the biomass of a small number of species (such as the hydromedusae Aglantha digitale and Rathkea octopunctata and the scyphomedusae Aurelia aurita and Cassiopea spp.) may increase. Adaptations that may allow these species to survive under eutrophic conditions are discussed.

nutrients Hydrozoa Scyphozoa Ctenophora Aurelia Cassiopea oxygen 


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© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Mary N. Arai
    • 1
    • 2
  1. 1.Pacific Biological StationNanaimoCanada
  2. 2.Department of Biological SciencesUniversity of CalgaryCalgaryCanada

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