Instrumented elephant seals reveal the seasonality in chlorophyll and light-mixing regime in the iron-fertilized Southern Ocean

被引:26
作者
Blain, Stephane [1 ,2 ]
Renaut, Sophie [1 ,2 ]
Xing, Xiaogang [3 ,4 ]
Claustre, Herve [3 ,4 ]
Guinet, Christophe [5 ]
机构
[1] Univ Paris 06, Lab Oceanog Microbienne, FR-66650 Banyuls Sur Mer, France
[2] CNRS, Lab Oceanog Microbienne, Banyuls Sur Mer, France
[3] Univ Paris 06, Lab Oceanog Villefranche, Villefranche Sur Mer, France
[4] CNRS, Lab Oceanog Villefranche, Villefranche Sur Mer, France
[5] CNRS, Ctr Etud Biol Chize, Villiers En Bois, France
关键词
Southern Ocean; climatology; chlorophyll; iron fertilization; CARBON EXPORT; PHYTOPLANKTON; DEPTH; DIATOMS; CYCLES; IMPACT;
D O I
10.1002/2013GL058065
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
We analyze an original large data set of concurrent in situ measurements of fluorescence, temperature and salinity provided by sensors mounted on the elephant seals of Kerguelen Island. Our results were mainly gathered in regions of the Southern Ocean where the typical iron limitation is relieved by natural iron fertilization. Thus the role of light as the proximal factor of control of phytoplankton can be examined. We show that self-shading, and consequently stratification, are major factors controlling the integrated biomass during the bloom induced by iron fertilization. When the mixed layer was the shallowest, the maximum Chl(ML) achievable by the given light-mixing regime was however not reached, most likely due to silicic acid limitation. We also show that a favorable light-mixing regime prevails after the spring equinox and is maintained for roughly seven months (October-April).
引用
收藏
页码:6368 / 6372
页数:5
相关论文
共 34 条
[1]   Seasonal and interannual variability of particulate organic carbon within the Southern Ocean from satellite ocean color observations [J].
Allison, David B. ;
Stramski, Dariusz ;
Mitchell, B. Greg .
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2010, 115
[2]   Primary production in the Southern Ocean, 1997-2006 [J].
Arrigo, Kevin R. ;
van Dijken, Gert L. ;
Bushinsky, Seth .
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2008, 113 (C8)
[3]   Abandoning Sverdrup's Critical Depth Hypothesis on phytoplankton blooms [J].
Behrenfeld, Michael J. .
ECOLOGY, 2010, 91 (04) :977-989
[4]   Effect of natural iron fertilization on carbon sequestration in the Southern Ocean [J].
Blain, Stephane ;
Queguiner, Bernard ;
Armand, Leanne ;
Belviso, Sauveur ;
Bombled, Bruno ;
Bopp, Laurent ;
Bowie, Andrew ;
Brunet, Christian ;
Brussaard, Corina ;
Carlotti, Francois ;
Christaki, Urania ;
Corbiere, Antoine ;
Durand, Isabelle ;
Ebersbach, Frederike ;
Fuda, Jean-Luc ;
Garcia, Nicole ;
Gerringa, Loes ;
Griffiths, Brian ;
Guigue, Catherine ;
Guillerm, Christophe ;
Jacquet, Stephanie ;
Jeandel, Catherine ;
Laan, Patrick ;
Lefevre, Dominique ;
Lo Monaco, Claire ;
Malits, Andrea ;
Mosseri, Julie ;
Obernosterer, Ingrid ;
Park, Young-Hyang ;
Picheral, Marc ;
Pondaven, Philippe ;
Remenyi, Thomas ;
Sandroni, Valerie ;
Sarthou, Geraldine ;
Savoye, Nicolas ;
Scouarnec, Lionel ;
Souhaut, Marc ;
Thuiller, Doris ;
Timmermans, Klaas ;
Trull, Thomas ;
Uitz, Julia ;
van Beek, Pieter ;
Veldhuis, Marcel ;
Vincent, Dorothee ;
Viollier, Eric ;
Vong, Lilita ;
Wagener, Thibaut .
NATURE, 2007, 446 (7139) :1070-U1
[5]   Mesoscale iron enrichment experiments 1993-2005: Synthesis and future directions [J].
Boyd, P. W. ;
Jickells, T. ;
Law, C. S. ;
Blain, S. ;
Boyle, E. A. ;
Buesseler, K. O. ;
Coale, K. H. ;
Cullen, J. J. ;
de Baar, H. J. W. ;
Follows, M. ;
Harvey, M. ;
Lancelot, C. ;
Levasseur, M. ;
Owens, N. P. J. ;
Pollard, R. ;
Rivkin, R. B. ;
Sarmiento, J. ;
Schoemann, V. ;
Smetacek, V. ;
Takeda, S. ;
Tsuda, A. ;
Turner, S. ;
Watson, A. J. .
SCIENCE, 2007, 315 (5812) :612-617
[6]   Environmental factors controlling phytoplankton processes in the Southern Ocean [J].
Boyd, PW .
JOURNAL OF PHYCOLOGY, 2002, 38 (05) :844-861
[7]   Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals [J].
Charrassin, J. -B. ;
Hindell, M. ;
Rintoul, S. R. ;
Roquet, F. ;
Sokolov, S. ;
Biuw, M. ;
Costa, D. ;
Boehme, L. ;
Lovell, P. ;
Coleman, R. ;
Timmermann, R. ;
Meijers, A. ;
Meredith, M. ;
Park, Y. -H. ;
Bailleul, F. ;
Goebel, M. ;
Tremblay, Y. ;
Bost, C. -A. ;
McMahon, C. R. ;
Field, I. C. ;
Fedak, M. A. ;
Guinet, C. .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2008, 105 (33) :11634-11639
[8]   Annual cycles and spring blooms in phytoplankton: don't abandon Sverdrup completely [J].
Chiswell, Stephen M. .
MARINE ECOLOGY PROGRESS SERIES, 2011, 443 :39-50
[9]   Synthesis of iron fertilization experiments:: From the iron age in the age of enlightenment -: art. no. C09S16 [J].
de Baar, HJW ;
Boyd, PW ;
Coale, KH ;
Landry, MR ;
Tsuda, A ;
Assmy, P ;
Bakker, DCE ;
Bozec, Y ;
Barber, RT ;
Brzezinski, MA ;
Buesseler, KO ;
Boyé, M ;
Croot, PL ;
Gervais, F ;
Gorbunov, MY ;
Harrison, PJ ;
Hiscock, WT ;
Laan, P ;
Lancelot, C ;
Law, CS ;
Levasseur, M ;
Marchetti, A ;
Millero, FJ ;
Nishioka, J ;
Nojiri, Y ;
van Oijen, T ;
Riebesell, U ;
Rijkenberg, MJA ;
Saito, H ;
Takeda, S ;
Timmermans, KR ;
Veldhuis, MJW ;
Waite, AM ;
Wong, CS .
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2005, 110 (C9) :1-24
[10]  
de Boyer Montegut C, 2004, J GEOPHYS RES, V109