Dark Carbon Fixation Measurements in the East Sea (Sea of Japan)

被引:0
|
作者
Jang, Hyo-Keun [1 ]
Youn, Seok-Hyun [1 ]
Joo, Huitae [1 ]
Kang, Jae-Joong [2 ]
Kim, Kwanwoo [2 ]
Park, Sanghoon [3 ,4 ]
Kim, Jaesoon [3 ,4 ]
Kim, Yejin [3 ,4 ]
Kim, Myeongseop [3 ,4 ]
Kim, Sungjun [3 ,4 ]
Lee, Sang-Heon [3 ,4 ]
机构
[1] Natl Inst Fisheries Sci, Ocean Climate & Ecol Res Div, Busan 46083, South Korea
[2] Natl Inst Fisheries Sci, Marine Environm Res Div, Pusan 46083, South Korea
[3] Pusan Natl Univ, Dept Oceanog, Busan 46241, South Korea
[4] Pusan Natl Univ, Marine Sci Inst, Busan 46241, South Korea
关键词
daily primary production; dark carbon fixation; carbon cycling; East Sea; CHLOROPHYLL; REVEALS; MAXIMUM;
D O I
10.3390/jmse12091516
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
The vertical distribution patterns of daily primary production and dark carbon fixation were investigated at three stations in the East/Japan Sea (hereafter East Sea), a semi-enclosed marginal sea in the northwest Pacific Ocean. Our results displayed consistent vertical patterns of daily primary production at two of the stations, while the third station exhibited a markedly different distribution pattern, highlighting localized variations in production dynamics. In contrast, dark carbon fixations displaying varying vertical patterns among the stations are not specific enough to have much meaning. Water column-integral values showed differences in the contribution of dark carbon fixation to total primary production, ranging from 4.5% to 27.1%. These variations may reflect environmental parameters such as nutrient concentrations. However, our study is limited by the lack of direct data on the microbial community structure and chemoautotrophic activities, which are crucial for a more comprehensive understanding of these patterns. Understanding the environmental drivers of dark carbon fixation is crucial for elucidating carbon cycling dynamics in the East Sea. Notably, dark carbon fixation could contribute up to one-third of primary production in the region as an additional source of newly produced organic matter, highlighting the need for further investigation into this previously overlooked process.
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页数:11
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