© Standing stock
and biomass
(mgC m 2 )
Production and/or
degradation of biomass
and'or particles
(mgC m 2)
@ Carbon sedimentary
fluxes
(mgC m 2 d ')
Figure 5 - Balance of mean C fluxes in the inner French shelf of bay of Biscay, in spring.
Solid arrows represent direct trophic transfers between the different compartments
(predation, uptake, degradation), dashed thin arrows represent the different ways
of organic matter supply, and dashed thick arrows represent downward POC fluxes.
Aknowledgments
We would like to thank Dr Bemard Boutier (Ifremer-Nantes) for having carried out sequential sediment trap collecting during the two cruises and for his personal communication on the mass-downward fluxes and SPM. Thanks are due also to Drs J.M. Froidefond,
J.M. Jouanneau (DGO-U. Bordeaux-l-UMR EPOC) and P. Michel (Iffemer-Nantes) for
ha\ing carried out part of the hydrological measurements and analyses. We are gratefully
indebted to the crews of R/V “Côte d'Aquitaine"(Insu), "Gwen Drez” and "Thalia" (Ifremer)
and “Poseïdon” (I.M. Kiel, Germany) for their precious help. This work was part of the
PNOC-Atlantique French programme. L.F. Artigas was supported by a French Government cooperation grant (BCiF) during his doctorate work.
133
and biomass
(mgC m 2 )
Production and/or
degradation of biomass
and'or particles
(mgC m 2)
@ Carbon sedimentary
fluxes
(mgC m 2 d ')
Figure 5 - Balance of mean C fluxes in the inner French shelf of bay of Biscay, in spring.
Solid arrows represent direct trophic transfers between the different compartments
(predation, uptake, degradation), dashed thin arrows represent the different ways
of organic matter supply, and dashed thick arrows represent downward POC fluxes.
Aknowledgments
We would like to thank Dr Bemard Boutier (Ifremer-Nantes) for having carried out sequential sediment trap collecting during the two cruises and for his personal communication on the mass-downward fluxes and SPM. Thanks are due also to Drs J.M. Froidefond,
J.M. Jouanneau (DGO-U. Bordeaux-l-UMR EPOC) and P. Michel (Iffemer-Nantes) for
ha\ing carried out part of the hydrological measurements and analyses. We are gratefully
indebted to the crews of R/V “Côte d'Aquitaine"(Insu), "Gwen Drez” and "Thalia" (Ifremer)
and “Poseïdon” (I.M. Kiel, Germany) for their precious help. This work was part of the
PNOC-Atlantique French programme. L.F. Artigas was supported by a French Government cooperation grant (BCiF) during his doctorate work.
133