Seasonal dynamics of macro-algae in the South Lake of Tunis |
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Authors: | A Shili E B Trabelsi N Ben Maïz |
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Institution: | 1. Laboratoire de Diversité Biologique et Fonctionnement des Ecosystèmes Marins C?tiers, Faculté des Sciences de Luminy, Aix-Marseille II, France 2. Société de Promotion du Lac de Tunis, BP 36, EL Bouhaira 1080, Timis Cedex
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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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Keywords: | Alga Biodiversity Biomass Cartography Cladophora Eutrophication Restoration Ruppia Ulva |
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