globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068480
论文题名:
What causes the inverse relationship between primary production and export efficiency in the Southern Ocean?
作者: Le Moigne F.A.C.; Henson S.A.; Cavan E.; Georges C.; Pabortsava K.; Achterberg E.P.; Ceballos-Romero E.; Zubkov M.; Sanders R.J.
刊名: Geophysical Research Letters
ISSN: 0094-9015
EISSN: 1944-8746
出版年: 2016
卷: 43, 期:9
起始页码: 4457
结束页码: 4466
语种: 英语
英文关键词: carbon export ; primary production ; Southern Ocean
Scopus关键词: Carbon dioxide ; Organic carbon ; Atmospheric CO ; Carbon export ; Dissolved organic carbon ; Inverse relationship ; Microbial abundances ; Primary production ; Southern ocean ; Surface layers ; Oceanography
英文摘要: The ocean contributes to regulating atmospheric CO2 levels, partly via variability in the fraction of primary production (PP) which is exported out of the surface layer (i.e., the e ratio). Southern Ocean studies have found that contrary to global-scale analyses, an inverse relationship exists between e ratio and PP. This relationship remains unexplained, with potential hypotheses being (i) large export of dissolved organic carbon (DOC) in high PP areas, (ii) strong surface microbial recycling in high PP regions, and/or (iii) grazing-mediated export that varies inversely with PP. We find that the export of DOC has a limited influence in setting the negative e ratio/PP relationship. However, we observed that at sites with low PP and high e ratios, zooplankton-mediated export is large and surface microbial abundance low suggesting that both are important drivers of the magnitude of the e ratio in the Southern Ocean. © 2016 American Geophysical Union.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84966344030&doi=10.1002%2f2016GL068480&partnerID=40&md5=7bc060147352cd520f8b5f395482d6d0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9978
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: National Oceanography Centre, Southampton, United Kingdom

Recommended Citation:
Le Moigne F.A.C.,Henson S.A.,Cavan E.,et al. What causes the inverse relationship between primary production and export efficiency in the Southern Ocean?[J]. Geophysical Research Letters,2016-01-01,43(9).
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