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  • 1
    Publication Date: 2021-05-19
    Description: L'etude d'une population naturelle de l'algue rouge Cystoclonium purpureum a montre que les thalles debutent leur croissonce au printemps pour atteindre leur developpement maximum ent ete. En automne, les algues commencent a disparaitre progressivement. En effet, le poids maximum des thalles est atteint en Juillet (No. 40g). Pendant la meme periode, la longueur des algues atteint son maximum (25,3 cm). Quand au diametre de la fronde, son evolution au cours du temps n'est pas claire. La biomass de Cystoclonium atteint egalement son apogee en Juillet (environ 35 g de MS/m2)
    Description: Study of Cystoclonium purpureum showed that thalli begin to grow in spring and reach highest developement in summer. In autumn, these algae disappear gradually. In fact, the maximum weight is obtained in July (No.40g). In the same period, algae length reach its maximum value, too (25,3cm). While frond diameter evolution isn't clear. Biomass of Cystoclonium reach its highest value in July, too (about 35g DM/m super(2))
    Description: Published
    Keywords: Biomasse ; Rhodophycée ; Growth ; Weight ; Length ; Population dynamics ; Seaweeds ; Biomass ; Seasonal variations ; Cystoclonium purpureum ; Marine
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp. 20-36
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  • 2
    Publication Date: 2021-05-19
    Description: L'etude de l'influence de la temperature et de la lumiere sur la croissance des tetraspores Gracilaria verrucosa a montre que l'intensite lumineuse optimale est comprise entre 85 et 110 Kappa E/m super(2)/s a 20 degree C et entre 80 et 100 Kappa E/ m super(2)/s a 25 degree C
    Description: Study of temperature and light influence on Gacilaria verrucosa tetraspores growth showed that optimal light intensity is situated between 85 and 110 Kappa E/m super(2)/s at 2 degree C and between 80 and 100 Kappa E/m super(2)/s at 25 degree C.
    Description: Published
    Keywords: Croissance ; Tétraspores ; Rhodophycée ; Temperature effects ; Growth ; Light intensity ; Seaweeds ; Gracilaria verrucosa ; Marine
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp. 62-79
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  • 3
    Publication Date: 2021-05-19
    Description: L’estimation de la biomasse de la macroalgue Gracilaria dans le lac nord de Tunis a été réalisée au cours de Juin-Juillet 1996 à partir de 38 stations d’échantillonnage couvrant tous les types de recouvrement de l’espèce. Il en ressort que la biomasse en poids humide est de 191 g/m2 (28 g/m2 en poids sec) et engendre un potentiel total estimé à 508 tonnes, soit 74 tonnes en poids sec (la matière sèche représentant en moyenne 14,5 % de la matière humide). Eu égard à la quantité de Gracilaria disponible à l’état naturel, la valorisation de cette espèce au niveau de ce site pourrait demander le recours à la phycoculture.
    Description: The red seaweed Gracilaria biomass in the Tunis north lake (Tunisia) was estimated between June and July 1996 with reference to different stations. This biomass represent 191 g/m super(2) (wet weight) and 28 g/m super(2) (dry weight). so the total quantity is estimated to 508 t in wet and 74 in dry (the average of dry material represent in general 14,5 % of the humid materiel). Because of its low natural total production, the development of Gracilaria seaweed in this site need culture processing.
    Description: Published
    Keywords: Macroalgues ; Phycoculture ; Potential resources ; Aquaculture development ; Marine aquaculture ; Seaweed culture ; Coastal lagoons ; Biomass ; Seaweeds ; Gracilaria ; Brackish
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: 15-27
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  • 4
    Publication Date: 2021-05-19
    Description: Ce travail concerne la repatition spatiale de la macroalgue Gracilaria dans le lac nord de Tunis et la determination des surfaces d'extension correspondant aux differents types de recouvrement de cette espece, durant les moins de Juin-Juillet 1996. Les peuplements de Gracilaria couvrent 265 ha soit 10% seulement de la surface totale du lac et se presentent sous forme de ceintures dans les profondeurs limitrophes (59,5%) ainsi qu'a l'interieur du lac (24%) et au voisinage de la digue centrale (17%).
    Description: This work concerns the red macro seaweed Gracilaria distribution in the Tunis north lake and the surface corresponding to each type recovering during June and July 1996. The Gracilaria covers 265 ha of the lake which correspond to 10% of it's total surface. 59,5% is surrounding the water plan in shallow water, 24% inside and 17% near the central dyke
    Description: Published
    Keywords: Macroalgues ; Cartographie ; Geographical distribution ; Recovery ; Coastal lagoons ; Seaweeds ; Gracilaria ; Marine
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp 55-72
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