KOPRI Repository

Carbon­Based Estimate of Nitrogen Fixation­Derived Net Community Production in N­Depleted Ocean Gyres

Cited 9 time in wos
Cited 8 time in scopus

Full metadata record

DC Field Value Language
dc.contributor.authorKo, Young Ho-
dc.contributor.authorLee, Kitack-
dc.contributor.authorTakahashi, Taro-
dc.contributor.authorKarl, David M.-
dc.contributor.authorKang, Sung-Ho-
dc.contributor.authorLee, Eunil-
dc.date.accessioned2020-04-27T04:11:02Z-
dc.date.available2020-04-27T04:11:02Z-
dc.date.issued2018-08-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/10529-
dc.description.abstractAccurate estimation of net community production (NCP) in the ocean is important for determining the future trend for carbon dioxide concentrations in the atmosphere and thus for understanding the global carbon cycle and climate change. Most methods for measuring NCP rely on analysis of dissolved fixed inorganic nitrogen species (N), which are believed to be limiting factors for NCP. However, in the vast areas of the ocean gyres only low levels of N are available for phytoplankton during much of the year. In this study the NCP was estimated by summing the seasonal reduction in the concentration of dissolved inorganic carbon (CT) in the surface mixed layer, corrected for changes associated with salinity variation, net air-sea CO2 flux, horizontal C advection, non-Redfield diffusive C and N fluxes (deviations from the C:N ratio of 7), and anthropogenic nitrogen deposition. The mixed layer reduction in CT was calculated from an annual CT cycle, deduced from comprehensive records of surface pCO2 and total alkalinity, using an established thermodynamic model. This method yielded a value of 0.6 ± 0.2 Pg of C, which represents the NCP that occurred during the warming period (approximately 8 months) in the nitrate-depleted (<0.2 μmol/kg) ocean. Our estimate is broadly consistent with the global N2 fixation rate estimated using the 15N-based method and suggests that N2 fixation by microorganisms is a major driver for this NCP.en_US
dc.languageEnglish-
dc.language.isoenen_US
dc.subjectEnvironmental Sciences & Ecologyen_US
dc.subjectGeologyen_US
dc.subjectMeteorology & Atmospheric Sciencesen_US
dc.subject.classificationAraonen_US
dc.titleCarbon­Based Estimate of Nitrogen Fixation­Derived Net Community Production in N­Depleted Ocean Gyresen_US
dc.title.alternative질소고갈 해양에서의 탄소기반의 질소고정 순생산력en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationKo, Young Ho, et al. 2018. "Carbon­Based Estimate of Nitrogen Fixation­Derived Net Community Production in N­Depleted Ocean Gyres". <em>GLOBAL BIOGEOCHEMICAL CYCLES</em>, 32(8): 1241-1252.-
dc.citation.titleGLOBAL BIOGEOCHEMICAL CYCLESen_US
dc.citation.volume32en_US
dc.citation.number8en_US
dc.identifier.doi10.1029/2017GB005634-
dc.citation.startPage1241en_US
dc.citation.endPage1252en_US
dc.description.articleClassificationSCI-
dc.description.jcrRateJCR 2016:5.85106382978723en_US
dc.subject.keywordnet community productionen_US
dc.subject.keywordnitrogen fixationen_US
dc.subject.keywordseasonal carbon drawdownen_US
dc.subject.keywordoligotrophic ocean gyreen_US
dc.identifier.localId2018-0141-
dc.identifier.scopusid2-s2.0-85052819402-
dc.identifier.wosid000443940300007-
Appears in Collections  
2018-2019, Korea-Arctic Ocean Observing System(K-AOOS) (18-19) / Kang, Sung-Ho (PM18040)
Files in This Item

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

Browse