KOPRI Repository

Spatial and temporal variation of net community production and its regulating factors in the Amundsen Sea, Antarctica

Cited 6 time in scopus
Metadata Downloads
Title
Spatial and temporal variation of net community production and its regulating factors in the Amundsen Sea, Antarctica
Other Titles
남극 아문젠해 신생산량의 시공간 변화와 조절인자
Authors
Hahm, Doshick
Lee, Sang H.
Shin, Hyoung Chul
Kim, Young Nam
Park, Jisoo
Kim, Hae-Cheol
Rhee, Tae Siek
Subject
Oceanography
Keywords
Amundsen Sea; Net community production; O2/Ar; polynya; primary production
Issue Date
2014
Citation
Hahm, Doshick, et al. 2014. "Spatial and temporal variation of net community production and its regulating factors in the Amundsen Sea, Antarctica". JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 119(5): 2815-2826.
Abstract
We observed DO2/Ar in the surface waters of the Amundsen Sea, Antarctica, during the austral summers in 2011 and 2012 to investigate the variability of net community production (NCP). Corresponding to the typical peak phytoplankton bloom period, the DO2/Ar of the Amundsen Sea Polynya (ASP) reached 30% in early January 2011 and had a strong positive correlation with the sea surface temperature (SST) and chlorophyll-a (Chl-a). In contrast, DO2/Ar decreased to 210% in the sea ice zone (SIZ), which was likely asso- ciated with either net O2 consumption in the unlit area or the entrainment of deep water containing low dissolved oxygen. Near the terminal stage of the phytoplankton bloom in late February 2012, we observed the same contrasting DO2/Ar features between the ASP and SIZ. However, the DO2/Ar in the ASP was not >10%, which corresponded with the overall reduction in Chl-a, solar radiation, and SST compared with the corresponding values in 2011. The average net community production in the ASP was 119 6 79 mmol O2 m22 d21 in January 2011, and 23 6 14 mmol O2 m22 d21 in February 2012. The strong correlations of NCP with SST and mixed layer depth (MLD) indicate that the ASP phytoplankton bloom is likely initiated by a combination of increased light availability and SST in early summer. Low SST and variable fluorescence to maximum florescence ratio (Fv/Fm) in February indicate that decreased solar radiation and Fe availability are likely responsible for the phytoplankton bloom demise.
URI
http://repository.kopri.re.kr/handle/201206/6001
DOI
http://dx.doi.org/10.1002/2013JC009762
Files in This Item
General Conditions
      ROMEO Green
    Can archive pre-print and post-print or publisher's version/PDF
      ROMEO Blue
    Can archive post-print (ie final draft post-refereeing) or publisher's version/PDF
      ROMEO Yellow
    Can archive pre-print (ie pre-refereeing)
      ROMEO White
    Archiving not formally supported

    qrcode

    Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

    Browse