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Seasonal dynamics of macro-algae in the South Lake of Tunis

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Abstract

The macro-algae communities observed in the south lake of Tunis are characterized by the predominance of nitrophilous algae which are in the order of biomass importance:Ulva, Cladophora andEnteromorpha. We have noted seasonal changes of alga distribution. The wind appears to be one of the most important factors influencing this distribution. The total biomass reaches a maximum in the spring. Rapid decomposition of the biomass leads to a severe ecological imbalance, resulting in crises of anoxia and fish death.

A restoration project has already started. It aims at removal of contaminated muds and the introduction of a new circulation system.

The main objectives of this work were to collect information on the distribution and biomass of the phytobenthic communities as a first step in the constitution of a database for further comparison.

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Authors and Affiliations

  1. Laboratoire de Diversité Biologique et Fonctionnement des Ecosystèmes Marins Côtiers, Faculté des Sciences de Luminy, Aix-Marseille II, France

    Shili A.

  2. Société de Promotion du Lac de Tunis, BP 36, EL Bouhaira 1080, Timis Cedex

    Trabelsi E. B. & Ben Maïz N.

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  1. Shili A.
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  2. Trabelsi E. B.
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  3. Ben Maïz N.
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Shili, A., Trabelsi, E.B. & Ben Maïz, N. Seasonal dynamics of macro-algae in the South Lake of Tunis. J Coast Conserv 8, 127–134 (2002). https://doi.org/10.1652/1400-0350(2002)008[0127:SDOMIT]2.0.CO;2

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  • DOI: https://doi.org/10.1652/1400-0350(2002)008[0127:SDOMIT]2.0.CO;2

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