FN Archimer Export Format
PT J
TI Plankton Assemblage Estimated With BGC-Argo Floats in the Southern Ocean: Implications for Seasonal Successions and Particle Export
BT 
AF REMBAUVILLE, Mathieu
   BRIGGS, Nathan
   ARDYNA, Mathieu
   UITZ, Julia
   CATALA, Philippe
   PENKERC'H, Cristophe
   POTEAU, Antoine
   CLAUSTRE, Herve
   BLAIN, Stephane
AS 1:1;2:1;3:1;4:1;5:2;6:1;7:1;8:1;9:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 UPMC Univ Paris 06, Sorbonne Univ, INSU CNRS, Lab Oceanog Villefranche, Villefranche Sur Mer, France.
   UPMC Univ Paris 06, Sorbonne Univ, CNRS, Lab Oceanog Microbienne LOMIC,Observ Oceanol, Banyuls Sur Mer, France.
C2 UNIV PARIS 06, FRANCE
   UNIV PARIS 06, FRANCE
IF 2.711
TC 40
UR https://archimer.ifremer.fr/doc/00405/51688/52245.pdf
   https://archimer.ifremer.fr/doc/00405/51688/52247.pdf
   https://archimer.ifremer.fr/doc/00405/51688/52250.xls
LA English
DT Article
CR MD 205 / SOCLIM
   OISO - OCÉAN INDIEN SERVICE D'OBSERVATION
BO Marion Dufresne
DE ;biogeochemical Argo;bio-optics;plankton diversity;Southern Ocean
AB The Southern Ocean (SO) hosts plankton communities that impact the biogeochemical cycles of the global ocean. However, weather conditions in the SO restrict mainly in situ observations of plankton communities to spring and summer, preventing the description of biological successions at an annual scale. Here, we use shipboard observations collected in the Indian sector of the SO to develop a multivariate relationship between physical and bio-optical data, and, the composition and carbon content of the plankton community. Then we apply this multivariate relationship to five biogeochemical Argo (BGC-Argo) floats deployed within the same bio-geographical zone as the ship-board observations to describe spatial and seasonal changes in plankton assemblage. The floats reveal a high contribution of bacteria below the mixed layer, an overall low abundance of picoplankton and a seasonal succession from nano- to microplankton during the spring bloom. Both naturally iron-fertilized waters downstream of the Crozet and Kerguelen Plateaus show elevated phytoplankton biomass in spring and summer but they differ by a nano- or microplankton dominance at Crozet and Kerguelen, respectively. The estimated plankton group successions appear consistent with independent estimations of particle diameter based on the optical signals. Furthermore, the comparison of the plankton community composition in the surface layer with the presence of large mesopelagic particles diagnosed by spikes of optical signals provides insight into the nature and temporal changes of ecological vectors that drive particle export. This study emphasizes the power of BGC-Argo floats for investigating important biogeochemical processes at high temporal and spatial resolution. 
PY 2017
PD OCT
SO Journal Of Geophysical Research-oceans
SN 2169-9275
PU Amer Geophysical Union
VL 122
IS 10
UT 000415893300028
BP 8278
EP 8292
DI 10.1002/2017JC013067
ID 51688
ER

EF