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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Dynamics of a Phaeocystis-dominated spring bloom in Belgian coastal waters. I. Phytoplanktonic activities and related parameters Lancelot, C.; Mathot, S. (1987). Dynamics of a Phaeocystis-dominated spring bloom in Belgian coastal waters. I. Phytoplanktonic activities and related parameters. Mar. Ecol. Prog. Ser. 37: 239-248. https://dx.doi.org/10.3354/meps037239 In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 134086 [ download pdf ]

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Trefwoorden

Algae Aquatic communities > Plankton > Phytoplankton Chemical reactions > Photochemical reactions > Photosynthesis Growth rate Algae [Algen]; Phaeocystis pouchetii (Hariot) Lagerheim, 1896 [WoRMS] ANE, België [Marine Regions]; België [Marine Regions] Marien/Kust

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Auteurs		Top
Lancelot, C., meer Mathot, S.

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Abstract

Phytoplanktonic activities were measured weekly during spring 1984 in Belgian coastal waters almost entirely dominated by Phaeocystis pouchetii colonies. Accurate methods were developed to measure photosynthesis and growth rates by colonial P. pouchetii cells, mucus secretion and excretion from colonies. Photosynthetic properties, although quite different for cellular photosynthesis and mucus secretion, were found to be independent of changes in environmental conditions. Maximal photosynthetic rates were respectively 0.09 and 0.16/h for cells and mucus. Cellular specific growth rate, on the other hand, was inversely correlated to the level of ambient inorganic nitrogen. Extreme values for cell turnover rates were 0.12 and 0.38/d. A budget of metabolic activities of P. pouchetii colonies was established for the period of their bloom. The colonies photo-assimilated 94 g C/m2/mo. From this, a maximum of 84 g C/m2/mo was devoted to colonial biomass production and 7.5 g C/m/mo was excreted from the colonies.

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