Les organismes constructeurs de l'atoll de Takapoto - article ; n°62 ; vol.35, pg 30-34

Michel Denizot, Jean-Pierre Chevalier

Description

Journal de la Société des océanistes - Année 1979 - Volume 35 - Numéro 62 - Pages 30-34
Les organismes constructeurs de l'atoll de Takapoto. On the outer slope and on the margin of the reef, there are few differences between the reef builders of Takapoto and those of the other atolls. The coral fauna is more abundant on the west coast (leeward-side), compared to what is located on the east coast (windward-side). On the other hand, in the lagoon, the coral fauna is poor (14 genus — mainly Porites) and the populations are heterogeneous, the southern coral patches being most prosperous.
The vegetable reef builders are abundant and belong to four main groups : the bulky calcareous algae (Porolithon, Chevaliericrusta), the algae sea- lawns (Jania), the consolidating algae and the Cyanophycae of the bottom. Compared to the corals, the calcareous algae enjoy a particular importance in the building process, both on the reef front and in the lagoon. That comes from the small number of functionnal channels between the lagoon and the ocean; as a result, the renewal of water is slow and the salinity is high.
5 pages
Source : Persée ; Ministère de la jeunesse, de l’éducation nationale et de la recherche, Direction de l’enseignement supérieur, Sous-direction des bibliothèques et de la documentation.

Informations

• Publié par: JOURNAL_DE_LA_SOCIETE_DES_OCEANISTES
• Publié le: 01 janvier 1979
• Nombre de lectures: 25
• Langue: Français

Extrait

Jean-Pierre Chevalier

Michel Denizot

Les organismes constructeurs de l'atoll de Takapoto

In: Journal de la Société des océanistes. N°62, Tome 35, 1979. pp. 30-34.

Abstract

Les organismes constructeurs de l'atoll de Takapoto. On the outer slope and on the margin of the reef, there are few differences

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(leeward-side), compared to what is located on the east coast (windward-side). On the other hand, in the lagoon, the coral fauna

is poor (14 genus — mainly Porites) and the populations are heterogeneous, the southern coral patches being most prosperous.

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Chevaliericrusta), the algae sea- lawns (Jania), the consolidating algae and the Cyanophycae of the bottom. Compared to the

corals, the calcareous algae enjoy a particular importance in the building process, both on the reef front and in the lagoon. That

comes from the small number of functionnal channels between the lagoon and the ocean; as a result, the renewal of water is

slow and the salinity is high.

Citer ce document / Cite this document :

Chevalier Jean-Pierre, Denizot Michel. Les organismes constructeurs de l'atoll de Takapoto. In: Journal de la Société des

océanistes. N°62, Tome 35, 1979. pp. 30-34.

doi : 10.3406/jso.1979.2990

http://www.persee.fr/web/revues/home/prescript/article/jso_0300-953X_1979_num_35_62_2990