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Assessment of the nutrient diol index (NDI) as a sea surface nutrient proxy using sinking particles in the East Sea

Cited 2 time in wos
Cited 3 time in scopus
Title
Assessment of the nutrient diol index (NDI) as a sea surface nutrient proxy using sinking particles in the East Sea
Other Titles
동해 침강입자를 활용한 표층영양염 프록시로서 NDI 평가
Authors
Gal, Jong-Ku
Kim, Jung-Hyun
Kim, Solbin
Hwang, Jeomshik
Shin, Kyung-Hoon
Subject
ChemistryOceanography
Keywords
East SeaLong chain diolNutrient diol indexPaleo nutrient proxySinking particle
Issue Date
2021-04
Citation
Gal, Jong-Ku, et al. 2021. "Assessment of the nutrient diol index (NDI) as a sea surface nutrient proxy using sinking particles in the East Sea". MARINE CHEMISTRY, 231: 1-9.
Abstract
The Nutrient Diol Index (NDI) has been proposed as a paleo sea surface nutrient proxy. However, the NDI’s broad applicability needs to be further assessed by examining its temporal variability in association with modern sea surface nutrient concentrations. This study is the first report to evaluate the NDI with respect to sinking particles in the East Sea. The NDI values showed seasonal variations resembling those of the surface phosphate concentrations in the study area. However, the calibration based on the sinking particles at 1000 m water depth (NDI = 1.134 × [PO4?? ] + 0.115, R2 = 0.59, n = 26) deviated from the newly compiled global surface sediment dataset (NDI = 0.392 × [PO4?? ] + 0.023; R2 = 0.58, n = 566). This local calibration predicted the phosphate concentrations in surface sediments in the East Sea better than the global calibration. Our study suggests that the difference of the calibration slope between the East Sea trap dataset and the global surface sediment dataset might be associated with different 1,14-diol producers and their sensitivity to nutrient concentrations in the East Sea. Accordingly, the NDI should be further assessed in various oceanic settings before it is routinely used to reconstruct sea surface nutrient conditions.
URI
https://repository.kopri.re.kr/handle/201206/13036
DOI
http://dx.doi.org/10.1016/j.marchem.2021.103937
Type
Article
Station
해당사항없음
Indexed
SCIE
Appears in Collections  
2020-2020, Changes in environments and coastal geomorphology of Svalbard fjords, Arctic (20-20) / Nam, Seung-il (PN20090)
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