Nutrition phosphoree chez Chondrus crispus (Rhodophycees)

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Contributeur(s) Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1985
Identifiant documentaire 9-1175
Identifiant OAI oai:archimer.ifremer.fr:1175
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Auteur(s): Chopin, T,Floc'H, J,Bodeau, B,Penot, M
Mots clés Chondrus crispus Algae Distribution Metabolism Seasonal variations Food absorption Phosphorus Plant nutrition
Date de publication 01/12/1983
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Droits de réutilisation info:eu-repo/semantics/openAccess

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Description
Phosphorated nutrition of the red alga Chondrus crispus Stackh. is studied is two morphologically very dissimilar forms of the thallus. Phosphorus measurements, which were monthly carried out at different parts of the alga, showed first that the distribution of this element is not homogeneous along the thallus, and second that seasonal variations occur. It is suggested that the classical polymorphism of the species can be taken into account as concerns its physiology. Besides, from absorption and exsorption experiments which were performed with super(32)P as a tracer, it is shown that the high concentration factor of phosphorus in the alga as compared to the environmental seawater (up to 17.9 x 10 super(4)) can be explained as an effect of metabolic process.
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