FN Archimer Export Format
PT J
TI Physical and biogeochemical controls of the phytoplankton blooms in North-Western Mediterranean Sea: A multiplatform approach over a complete annual cycle (2012-2013 DEWEX experiment)
BT 
AF MAYOT, Nicolas
   D'ORTENZIO, Fabrizio
   TAILLANDIER, Vincent
   PRIEUR, Louis
   DE FOMMERVAULT, Orens Pasqueron
   CLAUSTRE, Herve
   BOSSE, Anthony
   TESTOR, Pierre
   CONAN, Pascal
AS 1:1;2:1;3:1;4:1;5:1;6:1;7:2;8:2;9:3;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 UPMC Univ Paris 06, INSU CNRS, Sorbonne Univ, Lab Oceanog Villefranche, Villefranche Sur Mer, France.
   UPMC Univ Paris 06, Sorbonne Univ, Lab Oceanog & Climat Expt & Approches Numer, CNRS IRD MNHN,IPSL, Paris, France.
   UPMC Univ Paris 06, Sorbonne Univ, CNRS, Lab Oceanog Microbienne,Observ Oceanog, Banyuls Sur Mer, France.
C2 UNIV PARIS 06, FRANCE
   UNIV PARIS 06, FRANCE
   UNIV PARIS 06, FRANCE
IF 2.711
TC 50
UR https://archimer.ifremer.fr/doc/00380/49120/49552.pdf
LA English
DT Article
CR DEWEX-MERMEX 2013 LEG1
   DEWEX-MERMEX 2013 LEG2
   DOWEX2012
   MOOSE-GE 2012
   MOOSE-GE 2013
BO Le Suroît
   Téthys II
DE ;phytoplankton blooms;multiplatform approach;deep convection
AB The North Western Mediterranean Sea exhibits recurrent and significant autumnal and spring phytoplankton blooms. The existence of these two blooms coincide with typical temperate dynamics. To determine the potential control of physical and biogeochemical factors on these phytoplankton blooms, data from a multiplatform approach (combining ships, Argo and BGC-Argo floats, and bio-optical gliders) were analyzed in association with satellite observations in 2012-2013. The satellite framework allowed a simultaneous analysis over the whole annual cycle of in situ observations of mixed layer depth, photosynthetical available radiation, particle backscattering, nutrients (nitrate and silicate) and chlorophyll-a concentrations. During the year 2012-2013, satellite ocean color observations, confirmed by in situ data, have revealed the existence of two areas (or bioregions) with comparable autumnal blooms but contrasting spring blooms. In both bioregions, the ratio of the euphotic zone (defined as the isolume 0.415 mol photons m−2 d−1, Z0.415) and the MLD identified the initiation of the autumnal bloom, as well as the maximal annual increase in [Chl-a] in spring. In fact, the autumnal phytoplankton bloom might be initiated by mixing of the summer shallowing deep chlorophyll maximum, while the spring restratification (when Z0.415/MLD ratio became > 1) might induce surface phytoplankton production that largely overcomes the losses. Finally, winter deep convection events that took place in one of the bioregions induced higher net accumulation rate of phytoplankton in spring associated with a diatom-dominated phytoplankton community principally. We suggest that very deep winter MLD lead to an increase in surface silicates availability, which favored the development of diatoms. 
PY 2017
PD DEC
SO Journal Of Geophysical Research-oceans
SN 2169-9275
PU Amer Geophysical Union
VL 122
IS 12
UT 000422732100040
BP 9999
EP 10019
DI 10.1002/2016JC012052
ID 49120
ER

EF