La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Characterisation of marine zooplankton alkaline phosphatase activity in relation to water quality (1998)
Auteurs :	D. Jamet, Auteur ; G. Boge, Auteur
Type de document :	Article
Dans :	Hydrobiologia (373-374 1998)
Article en page(s) :	311-316
Résumé :	In this study, we measured the non-specific zooplanktonic phosphate activity inside and outside Toulon bay. These activities were compared in relation to substrate and phosphate concentrations, pH and sea water composition. Great differences were observed between the two sites. Phosphatase activities were higher inside Toulon bay, where high zooplankton density and high protein concentrations were observed. Concerning enzyme activities, the intersite differences increased at the lowest substrate concentrations. Moreover, zooplankton alkaline phosphatase activity showed a good adaptation to the natural medium conditions (pHs and ionic strength) and is likely directly liberated to the water, where it contributes to an enrichment in mineral phosphorus from organic material.

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