4th International Submarine Canyon Symposium (INCISE2018)

5-7 November 2018, Shenzhen, CHINA

View Abstract

This is the detail of Contribution of net microbial carbon fixation to organic carbon cycling in Trench environment

< Back to List Version: 1050:1086 Status: Approved Edit Time: 2018/9/29 15:17:12


Author
Xinxin Li
Co-Author(s)
Xin Zhao, Hongyue Dang, Chuanlun Zhang
Abstarct Title
Contribution of net microbial carbon fixation to organic carbon cycling in Trench environment
Abstarct Body
Carbon budget is one of the most important scientific questions in oceanography. Pelagic OC cycling in Trench is unique to study OC budget in complete ocean layers from epipelagic all the way to hadal pelagic environment. However, besides the occasional input of OC by geological activities such as mass wasting, landslides, earthquakes, the extraordinary high OC content in trench sediment mediated by microbes in overlying water columns are still poorly known. We propose to apply organic geochemical analysis such as elemental analysis, light spectrometry to study the composition and characteristics of POC/DOC in the pelagic realm of the trench; combining with measurement on microbial chemoautotrophic carbon fixation and respiration rate, we aim to first quantitatively analyze the carbon input from net microbial carbon fixation processes to trench sedimentary OC pool.
INCISE Theme
Special Session: Canyons and trenches in the South China Sea and West Pacific
Presentation Type
Poster Presentation
Keywords
Marine organic carbon cycling; Chemoautotrophic carbon fixation; Microbial respiration; Trench

< Back to List