Carbon export efficiency and phytoplankton community composition in the Atlantic sector of the Arctic Ocean
作者： Frédéric A. C. Moigne , Alex J. Poulton , Stephanie A. Henson , Chris J. Daniels , Glaucia M. Fragoso
DOI: 10.1002/2015JC010700
关键词:
摘要: Arctic primary production is sensitive to reductions in sea ice cover, and will likely increase into the future. Whether this increased (PP) translate export of particulate organic carbon (POC) currently unclear. Here we report on POC efficiency during summer 2012 Atlantic sector Ocean. We coupled 234-thorium based estimates flux onboard incubation-based PP. Export (defined as fraction PP that exported below 100 m depth: ThE-ratio) showed large variability (0.09 ± 0.19–1.3 ± 0.3). The highest ThE-ratio (1.3 ± 0.3) was recorded a mono-specific bloom Phaeocystis pouchetii located edge. Blooming diatom dominated areas also had high ThE-ratios (0.1 ± 0.1–0.5 ± 0.2), while mixed and/or prebloom communities lower (0.10 ± 0.03–0.19 ± 0.05). Furthermore, using oxygen saturation, bacterial abundance, production, zooplankton demand, investigated spatial degree which sinking material may be remineralized upper mesopelagic ( m) at similar rate from blooms mesopelagic, contrary previous findings.
harvard.edu
hw.ac.uk
geomar.de
archives-ouvertes.fr
researchgate.net 
sci-hub.se 参考文章(85)
Helen E.K. Smith, The contribution of mineralising phytoplankton to the biological carbon pump in high latitudes University of Southampton. ,(2014)
E. L. Cavan, F. A. C. Le Moigne, A. J. Poulton, G. A. Tarling, P. Ward, C. J. Daniels, G. M. Fragoso, R. J. Sanders, Attenuation of particulate organic carbon flux in the Scotia Sea, Southern Ocean, is controlled by zooplankton fecal pellets Geophysical Research Letters. ,vol. 42, pp. 821- 830 ,(2015) , 10.1002/2014GL062744
G. R. DiTullio, J. M. Grebmeier, K. R. Arrigo, M. P. Lizotte, D. H. Robinson, A. Leventer, J. P. Barry, M. L. VanWoert, R. B. Dunbar, Rapid and early export of Phaeocystis antarctica blooms in the Ross Sea, Antarctica Nature. ,vol. 404, pp. 595- 598 ,(2000) , 10.1038/35007061
Phaeocystis, major link in the biogeochemical cycling of climate-relevant elements Springer Netherlands. pp. 336- ,(2007) , 10.1007/978-1-4020-6214-8
Phoebe J. Lam, Scott C. Doney, James K. B. Bishop, The dynamic ocean biological pump: Insights from a global compilation of particulate organic carbon, CaCO3, and opal concentration profiles from the mesopelagic Global Biogeochemical Cycles. ,vol. 25, ,(2011) , 10.1029/2010GB003868
M. S. Baumann, S. B. Moran, M. W. Lomas, R. P. Kelly, D. W. Bell, Seasonal decoupling of particulate organic carbon export and net primary production in relation to sea-ice at the shelf break of the eastern Bering Sea: Implications for off-shelf carbon export Journal of Geophysical Research. ,vol. 118, pp. 5504- 5522 ,(2013) , 10.1002/JGRC.20366
J. S. Riley, R. Sanders, C. Marsay, F. A. C. Le Moigne, E. P. Achterberg, A. J. Poulton, The relative contribution of fast and slow sinking particles to ocean carbon export Global Biogeochemical Cycles. ,vol. 26, pp. n/a- n/a ,(2012) , 10.1029/2011GB004085
G. J. Wasserburg, R. Lawrence Edwards, J. H. Chen, 238 U, 234 U and 232 Th in seawater E&PSL. ,vol. 80, pp. 241- 251 ,(1986) , 10.1016/0012-821X(86)90108-1
Richard Sanders, Esben Madsen, Paul J. Morris, Frédéric Le Moigne, Graham D. Quartly, Stephanie A. Henson, A reduced estimate of the strength of the ocean's biological carbon pump Geophysical Research Letters. ,vol. 38, ,(2011) , 10.1029/2011GL046735
Roger Francois, Susumu Honjo, Richard Krishfield, Steve Manganini, Factors controlling the flux of organic carbon to the bathypelagic zone of the ocean Global Biogeochemical Cycles. ,vol. 16, pp. 34-1- 34-20 ,(2002) , 10.1029/2001GB001722