Direct measurements of carbon and carbonate export from a coral reef ecosystem (Moorea Island , French Polynesia)

被引：0

作者：

B. Delesalle

R. Buscail

J. Carbonne

T. Courp

V. Dufour

S. Heussner

A. Monaco

M. Schrimm

机构：

[1] Laboratoire de Biologie Marine et Malacologie,

[2] Ecole Pratique des Hautes études,undefined

[3] URA 1453 CNRS,undefined

[4] Centre de Biologie et d’Écologie Tropicale et Méditerranéenne,undefined

[5] Université de Perpignan,undefined

[6] F-66860 Perpignan Cedex e-mail: bd@univ-perp.fr,undefined

[7] Centre de Recherches Insulaires et Observatoire de l’Environnement,undefined

[8] Antenne E.P.H.E.,undefined

[9] B.P. 1013,undefined

[10] Moorea,undefined

[11] Polynésie française,undefined

[12] Laboratoire de Sédimentologie et Géochimie Marines,undefined

[13] URA 715 CNRS,undefined

[14] Université de Perpignan,undefined

[15] F-66860 Perpignan Cedex.,undefined

[16] Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne,undefined

[17] Ecole Pratique des Hautes études,undefined

[18] URA 1453 CNRS,undefined

[19] Centre de Biologie et d’écologie Tropicale et Méditerranéenne,undefined

[20] Université de Perpignan,undefined

[21] F-66860 Perpignan Cedex,undefined

来源：

Coral Reefs | 1998年 / 17卷

关键词：

Keywords Export processes; Coral reefs; Organic carbon; Carbonates; French Polynesia;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The export of carbon and carbonate from coral reefs was investigated through a multidisciplinary investigation of the hydrological, geochemical, sedimentological and biological features of Tiahura reef on the northwestern coast of Moorea Island (French Polynesia). The hydrology of the fore-reef is characterised by prevailing longshore western currents and a strong thermocline. As revealed by turbidity structures (benthic and intermediate nepheloid layers) and by the amount of particles collected by near-bottom sediment traps, horizontal and downslope advections of particles dominate over offshore vertical transport. The exported material is rich in carbonate (ca. 80%) and poor in organic matter (ca. 4%). Sedimentation rates at 430 m depth, i.e. definitive export, reached 209.6 mg m-2 d-1 (dry weight). Estimates of carbon and carbonates export for Tiahura reef also reported here represent respectively 47% and 21% of the organic and inorganic carbon produced within the reef.

引用

页码：121 / 132

页数：11