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Open Marien Archief

Het Open Marien Archief van België (OMA) biedt vrije toegang tot de digitale publicaties over de Vlaamse kust en het Belgisch deel van de Noordzee, en alle andere mariene, estuariene en kustgebonden publicaties van Belgische auteurs en wetenschappers en van buitenlandse wetenschappers geaffilieerd aan een Belgische instelling.

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Xanthophyll cycling in Phaeocystis globosa and Thalassiosira sp.: a possible mechanism for species succession
Meyer, A.A.; Tackx, M.; Daro, N. (2000). Xanthophyll cycling in Phaeocystis globosa and Thalassiosira sp.: a possible mechanism for species succession. J. Sea Res. 43(3-4): 373-384. dx.doi.org/10.1016/S1385-1101(00)00031-9
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414, meer
Peer reviewed article  

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Trefwoorden
    Phaeocystis globosa Scherffel, 1899 [WoRMS]; Thalassiosira P.T. Cleve, 1873 emend. Hasle, 1973 [WoRMS]
    Marien
Author keywords
    Phaeocystis globosa; Thalassiosira sp; xanthophyll cycling;

Auteurs  Top 
  • Meyer, A.A., meer
  • Tackx, M., meer
  • Daro, N.

Abstract
    The ability of phytoplankton species to initiate photo-protective mechanisms and the rates by which they do so have been suggested to be partly responsible for species succession. To examine whether this is also true in the case of diatom spring blooms preceding Phaeocystis globosa, cultures of P. globosa and Thalassiosira sp. were investigated under controlled laboratory conditions for differences in their xanthophyll cycling rates and abilities. It was found that P. globosa exhibited active and rapid xanthophyll cycling when cultures photoacclimated to 10, 50 and 100 µmol quanta m-2 s-1, were shifted to 150 and 250 µmol quanta m-2 s-1. The early spring diatom Thalassiosira only exhibited xanthophyll cycling when acclimated to 10 µmol quanta m-2 s-1. P. globosa always exhibited faster xanthophyll cycling rates than Thalassiosira, giving P. globosa a possible competitive edge over Thalassiosira sp. It was also found that the magnitude of xanthophyll cycling correlates with the intensity of light changes during the one-hour xanthophyll cycling experiments, and thus may be regarded as related to photoacclimation.

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