Zobrazeno 1 - 10
of 285
pro vyhledávání: '"F. Dehairs"'
Autor:
C. Mears, H. Thomas, P. B. Henderson, M. A. Charette, H. MacIntyre, F. Dehairs, C. Monnin, A. Mucci
Publikováno v:
Biogeosciences, Vol 17, Pp 4937-4959 (2020)
As a shelf-dominated basin, the Arctic Ocean and its biogeochemistry are heavily influenced by continental and riverine sources. Radium isotopes (226Ra, 228Ra, 224Ra, and 223Ra), are transferred from the sediments to seawater, making them ideal trace
Externí odkaz:
https://doaj.org/article/7515c8f21ab542a3bb94a8e439117113
Autor:
D. Fonseca-Batista, X. Li, V. Riou, V. Michotey, F. Deman, F. Fripiat, S. Guasco, N. Brion, N. Lemaitre, M. Tonnard, M. Gallinari, H. Planquette, F. Planchon, G. Sarthou, M. Elskens, J. LaRoche, L. Chou, F. Dehairs
Publikováno v:
Biogeosciences, Vol 16, Pp 999-1017 (2019)
Diazotrophic activity and primary production (PP) were investigated along two transects (Belgica BG2014/14 and GEOVIDE cruises) off the western Iberian Margin and the Bay of Biscay in May 2014. Substantial N2 fixation activity was observed at 8 of th
Externí odkaz:
https://doaj.org/article/bfa17371447942e380462d9b57c03f17
Autor:
G. Sarthou, P. Lherminier, E. P. Achterberg, F. Alonso-Pérez, E. Bucciarelli, J. Boutorh, V. Bouvier, E. A. Boyle, P. Branellec, L. I. Carracedo, N. Casacuberta, M. Castrillejo, M. Cheize, L. Contreira Pereira, D. Cossa, N. Daniault, E. De Saint-Léger, F. Dehairs, F. Deng, F. Desprez de Gésincourt, J. Devesa, L. Foliot, D. Fonseca-Batista, M. Gallinari, M. I. García-Ibáñez, A. Gourain, E. Grossteffan, M. Hamon, L. E. Heimbürger, G. M. Henderson, C. Jeandel, C. Kermabon, F. Lacan, P. Le Bot, M. Le Goff, E. Le Roy, A. Lefèbvre, S. Leizour, N. Lemaitre, P. Masqué, O. Ménage, J.-L. Menzel Barraqueta, H. Mercier, F. Perault, F. F. Pérez, H. F. Planquette, F. Planchon, A. Roukaerts, V. Sanial, R. Sauzède, C. Schmechtig, R. U. Shelley, G. Stewart, J. N. Sutton, Y. Tang, N. Tisnérat-Laborde, M. Tonnard, P. Tréguer, P. van Beek, C. M. Zurbrick, P. Zunino
Publikováno v:
Biogeosciences, Vol 15, Pp 7097-7109 (2018)
The GEOVIDE cruise, a collaborative project within the framework of the international GEOTRACES programme, was conducted along the French-led section in the North Atlantic Ocean (Section GA01), between 15 May and 30 June 2014. In this special issu
Externí odkaz:
https://doaj.org/article/16cc721d8fa1449d99b262d954d9d189
Autor:
N. Lemaitre, F. Planchon, H. Planquette, F. Dehairs, D. Fonseca-Batista, A. Roukaerts, F. Deman, Y. Tang, C. Mariez, G. Sarthou
Publikováno v:
Biogeosciences, Vol 15, Pp 6417-6437 (2018)
In this study we report particulate organic carbon (POC) export fluxes for different biogeochemical basins in the North Atlantic as part of the GEOTRACES GA01 expedition (GEOVIDE, May–June 2014). Surface POC export fluxes were deduced by combini
Externí odkaz:
https://doaj.org/article/364701637e6647a1bc13423632f6e46c
Autor:
N. Lemaitre, H. Planquette, F. Planchon, G. Sarthou, S. Jacquet, M. I. García-Ibáñez, A. Gourain, M. Cheize, L. Monin, L. André, P. Laha, H. Terryn, F. Dehairs
Publikováno v:
Biogeosciences, Vol 15, Pp 2289-2307 (2018)
The remineralisation of sinking particles by prokaryotic heterotrophic activity is important for controlling oceanic carbon sequestration. Here, we report mesopelagic particulate organic carbon (POC) remineralisation fluxes in the North Atlantic a
Externí odkaz:
https://doaj.org/article/cd86649419a648449a93460b79ab8377
Autor:
A. J. Cavagna, F. Fripiat, M. Elskens, P. Mangion, L. Chirurgien, I. Closset, M. Lasbleiz, L. Florez-Leiva, D. Cardinal, K. Leblanc, C. Fernandez, D. Lefèvre, L. Oriol, S. Blain, B. Quéguiner, F. Dehairs
Publikováno v:
Biogeosciences, Vol 12, Iss 21, Pp 6515-6528 (2015)
Although the Southern Ocean is considered a high-nutrient, low-chlorophyll (HNLC) area, massive and recurrent blooms are observed over and downstream of the Kerguelen Plateau. This mosaic of blooms is triggered by a higher iron supply resulting from
Externí odkaz:
https://doaj.org/article/79888a2791ab4bebba71a56c23e453fe
Autor:
F. Planchon, D. Ballas, A.-J. Cavagna, A. R. Bowie, D. Davies, T. Trull, E. C. Laurenceau-Cornec, P. Van Der Merwe, F. Dehairs
Publikováno v:
Biogeosciences, Vol 12, Iss 12, Pp 3831-3848 (2015)
This study examined upper-ocean particulate organic carbon (POC) export using the 234Th approach as part of the second KErguelen Ocean and Plateau compared Study expedition (KEOPS2). Our aim was to characterize the spatial and the temporal variabilit
Externí odkaz:
https://doaj.org/article/1f94a6d06f9948e589e5e46230816e58
Autor:
F. Dehairs, F. Fripiat, A.-J. Cavagna, T. W. Trull, C. Fernandez, D. Davies, A. Roukaerts, D. Fonseca Batista, F. Planchon, M. Elskens
Publikováno v:
Biogeosciences, Vol 12, Iss 5, Pp 1459-1482 (2015)
This paper presents whole water column data for nitrate N, O isotopic composition for the Kerguelen Plateau area and the basin extending east of Heard Island, aiming at understanding the N-cycling in this naturally iron fertilized area that is charac
Externí odkaz:
https://doaj.org/article/91e07c796f424137b737dd9039a085de
Autor:
S. H. M. Jacquet, F. Dehairs, D. Lefèvre, A. J. Cavagna, F. Planchon, U. Christaki, L. Monin, L. André, I. Closset, D. Cardinal
Publikováno v:
Biogeosciences, Vol 12, Iss 6, Pp 1713-1731 (2015)
We report on the zonal variability of mesopelagic particulate organic carbon remineralization and deep carbon transfer potential during the Kerguelen Ocean and Plateau compared Study 2 expedition (KEOPS 2; October–November 2011) in an area of the p
Externí odkaz:
https://doaj.org/article/8871e1616c6347a5ac9c7cf105b3dbb8
Autor:
P. van der Merwe, A. R. Bowie, F. Quéroué, L. Armand, S. Blain, F. Chever, D. Davies, F. Dehairs, F. Planchon, G. Sarthou, A. T. Townsend, T. W. Trull
Publikováno v:
Biogeosciences, Vol 12, Iss 3, Pp 739-755 (2015)
The KEOPS2 project aims to elucidate the role of natural Fe fertilisation on biogeochemical cycles and ecosystem functioning, including quantifying the sources and processes by which iron is delivered in the vicinity of the Kerguelen Archipelago, Sou
Externí odkaz:
https://doaj.org/article/ebdfc56767fe4a8b86ce2a8e20af5500