FN Archimer Export Format
PT J
TI Intense summer Si-recycling in the surface Southern Ocean
BT 
AF BEUCHER, Charlotte
   TREGUER, Paul
   HAPETTE, Ana-Maria
   CORVAISIER, Rudolph
   METZL, Nicolas
   PICHON, Jean-Jacques
AS 1:1;2:1;3:1;4:1;5:2;6:3;
FF 1:;2:;3:;4:;5:;6:;
C1 European Inst Marine Studies, LEMAR, UMR 6539, F-29280 Plouzane, France.
   Univ Paris 06, LBCM, IPSL, UMR 7094, F-75252 Paris, France.
   Univ Bordeaux, EPOC, UMR 5805, F-33405 Talence, France.
C2 EUROPEAN INST MARINE STUDIES, FRANCE
   UNIV PARIS 06, FRANCE
   UNIV BORDEAUX, FRANCE
IF 2.378
TC 31
UR https://archimer.ifremer.fr/doc/00226/33719/32139.pdf
LA English
DT Article
CR MD 130 / CADO
   VT 60 / CARAUS - OISO 10
BO Marion Dufresne
AB Si-cycle in surface waters was investigated in summer 2003 during a transect conducted from south-Australia to Antarctica. Diatoms dominated the microphytoplankton. Silicic acid was depleted up to 60degreesS; a subsurface maximum of biogenic silica (= biosilica) was observed in the Permanent Open Ocean Zone. In the 100-0.01% light zone, the ratio of depth-integrated biosilica dissolution rate ( D) to depth-integrated biosilica production rate ( P) ranged between 0 to 3.1, being > 1 for 5 of our 6 stations. The biosilica dissolution was related to the percentage of dead diatoms but not to the temperature and might be, at least partially, under bacteria mediation. This study shows that during summer the Southern Ocean silicate pump can be much less efficient than usually expected. Existence of scenarios with intense surface Si-recycling in the Southern Ocean has major consequences both for modelers and paleoceanographers.
PY 2004
PD MAY
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 31
IS 9
UT 000221333300001
BP 1
EP 4
DI 10.1029/2003GL018998
ID 33719
ER

EF