Evidence of minimal carbon sequestration in the productive Amundsen Sea polynya SCIE SCOPUS

Cited 17 time in WEB OF SCIENCE Cited 15 time in Scopus
Title
Evidence of minimal carbon sequestration in the productive Amundsen Sea polynya
Author(s)
Lee, SangHoon; Hwang, Jeomshik; Ducklow, Hugh W.; Hahm, Doshik; Lee, Sang H.; Kim, Dongseon; Hyun, Jung-Ho; Park, Jisoo; Ha, Ho K.; Kim, Tae-Wan; Yang, Eun J.; Shin, Hyoung C.
KIOST Author(s)
Kim, Dong Seon(김동선)
Publication Year
2017-08-16
Abstract
The Amundsen Sea polynya (ASP) is reportedly the most productive among the coastal polynyas around Antarctica. However, observational constraints limit our understanding of the biological pump and carbon cycle in the ASP. We measured various carbon-related parameters such as primary production, bacterial production, sinking flux of particulate organic carbon (POC), and accumulation of organic carbon in the sediment as well as hydrographic parameters during field observations and by instrument moorings. Over 95% of the photosynthetically produced POC was converted to suspended POC and/ or dissolved carbon forms in the upper similar to 400 m layer. We postulate that most of the carbon transported to the water column by the biological pump in the ASP was flushed out of the shelf without being sequestered for long-term storage in sediments. Lack of bottom water formation due to intrusion of Circumpolar Deep Water in the lower layer reduces carbon sequestration efficiency.
ISSN
0094-8276
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1170
DOI
10.1002/2017GL074646
Bibliographic Citation
GEOPHYSICAL RESEARCH LETTERS, v.44, no.15, pp.7892 - 7899, 2017
Publisher
AMER GEOPHYSICAL UNION
Subject
NET COMMUNITY PRODUCTION; CIRCUMPOLAR DEEP-WATER; ROSS SEA; SEASONAL-VARIATION; SHELF; PHYTOPLANKTON; ICE; FLUX; EXPORT; ANTARCTICA
Keywords
Amundsen Sea; biological pump; carbon sequestration; circumpolar deep water; polynya; sediment trap
Type
Article
Language
English
Document Type
Article
Publisher
AMER GEOPHYSICAL UNION
Related Researcher
Research Interests

Biogeochemistry,Carbon cycle,Ocean acidification,생지화학,탄소순환,해양산성화

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