Skip to Main content Skip to Navigation
Journal articles

Low community photosynthetic quotient in coral reef sediments Un quotient photosynthétique des communautés faible dans les sédiments de récif corallien

Abstract : Fluxes of dissolved inorganic carbon and oxygen at the water-sediment interface were measured at eight coral reef stations (Indian Ocean) in summer and winter. The dark fluxes provided the community respiratory quotient (CRQ = dissolved inorganic carbon release / oxygen uptake) and the diurnal fluxes corrected from the dark fluxes gave the community photosynthetic quotient (CPQ = oxygen gross release / dissolved inorganic carbon gross uptake). The CRQ and the winter CPQ were not significantly different from 1. Summer CPQ (0.79; SD 0.02) was significantly lower than 1 due to the combined effect of the daily evolution of the community respiration and the discrepancy between the daily evolution in community oxygen respiration and community carbon respiration. These results highlight the importance of measuring simultaneously the benthic community production and respiration for long term integrated data sets, instead of the traditional daily or seasonal budget calculations from limited measures of community respiration.
Document type :
Journal articles
Complete list of metadatas

https://hal.univ-brest.fr/hal-00670285
Contributor : Adminhal Univbrestbu <>
Submitted on : Wednesday, February 15, 2012 - 10:20:04 AM
Last modification on : Tuesday, June 23, 2020 - 3:39:35 AM

Identifiers

Citation

Dorothée Taddei, Pascale Cuet, Frouin Patrick, Clémentine Esbelin, Jacques Clavier. Low community photosynthetic quotient in coral reef sediments Un quotient photosynthétique des communautés faible dans les sédiments de récif corallien. Comptes Rendus Biologies, Elsevier Masson, 2008, 331 (9), pp.668-677. ⟨10.1016/j.crvi.2008.06.006⟩. ⟨hal-00670285⟩

Share

Metrics

Record views

461