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Distribution of cysts from toxic or potentially toxic dinoflagellates along the Portuguese coast
Amorim, A.; Dale, B. (1998). Distribution of cysts from toxic or potentially toxic dinoflagellates along the Portuguese coast, in: Reguera, B. et al. (Ed.) Harmful algae: Proceedings of the VIII International Conference on Harmful Algae, Vigo, Spain, 25-29 June 1997. pp. 65-65
In: Reguera, B. et al. (Ed.) (1998). Harmful algae: Proceedings of the VIII International Conference on Harmful Algae, Vigo, Spain, 25-29 June 1997. Xunta de Galicia/Intergovernmental Oceanographic Commission of UNESCO: Vigo. ISBN 84-453-2166-8 . xxv, 635 pp., more

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Keywords
    Gymnodinium catenatum H.W.Graham, 1943 [WoRMS]; Marine

Authors  Top 
  • Amorim, A.
  • Dale, B.

Abstract
    Preliminary results are presented from the first survey of dinoflagellate cysts along the Portuguese coast. Surface sediments were collected from 29 sites covering a variety of coastal environments. Cysts of three main groups of toxic or potentially toxic dinoflagellates were found: I) Cyst type Gymnodinium catenatum - present along the whole coast, dominated assemblages by up to 68% in the SW coast; 2) Cyst type Pyrodinium bahamense - the first record of this species on the eastern side of the Atlantic Ocean - present in several sites along the coast, included a few specimens with apparently viable cell contents; 3)?Alexandrium - present along the whole coast, accounted for 8-31 % of cyst assemblages on the S coast; on the west coast tended to occur in low percentages with the exception of one site where it reached 43%.

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