Removable carbon and storage carbon of golden tides

Chunyan Zhao; Jingyi Sun; Yifei Shen; Zhangyi Xia; Meijuan Hu; Tingjian Wu; Minmin Zhuang; Yaru Li; Yupei Tong; Jia Yang; Jianheng Zhang; Peimin He

doi:10.1016/j.marpolbul.2023.114974

Removable carbon and storage carbon of golden tides

Mar Pollut Bull. 2023 Jun:191:114974. doi: 10.1016/j.marpolbul.2023.114974. Epub 2023 Apr 27.

Authors

Chunyan Zhao¹, Jingyi Sun¹, Yifei Shen¹, Zhangyi Xia¹, Meijuan Hu¹, Tingjian Wu¹, Minmin Zhuang², Yaru Li¹, Yupei Tong¹, Jia Yang¹, Jianheng Zhang³, Peimin He⁴

Affiliations

¹ College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China.
² State Key Lab of Estuarine & Coastal Research, East China Normal University, Shanghai 200062, China.
³ College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China; Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China. Electronic address: jh-zhang@shou.edu.cn.
⁴ College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China; Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China. Electronic address: pmhe@shou.edu.cn.

PMID: 37116250
DOI: 10.1016/j.marpolbul.2023.114974

Abstract

Due to ever-increasing global warming, ocean acidification, and inshore eutrophication, the outbreak of golden tides with Sargassum horneri has increased in the Yellow sea, where the biomass carbon enters three main carbon pathways: a. Removal of carbon from seawater by salvage, known as removable carbon; b. Biomass carbon is deposited to the seafloor through POC and RDOC through Biological Carbon Pump and Microbial Carbon Pump; c. Re-entering the carbon cycle through the food chain or re-entering the atmosphere through the action of microbes. Estimating carbon fixation (removable carbon) and storage (particulate organic carbon (POC) and refractory dissolved organic carbon (RDOC)) is vital in studying the global carbon cycle. In this research, it was observed that the C content of S. horneri was high, and the utilization rate of dissolved organic carbon (DOC), RDOC, and POC was also high in the eutrophication environment, where only 2.71 % of algal biomass carbon was converted to RDOC, and only 0.20 % converted to POC. The C + N + P combination has a restart effect on the seasonal accumulation of RDOC in relevant sea areas. It is suggested that the salvage and resource utilization should be strengthened to effectively control the golden tide and reduce the substantial economic losses to realize the win-win situation of carbon sink and environmental restoration.

Keywords: Carbon fixation; Carbon storage; DOC; Golden tides; POC; RDOC.

MeSH terms

Biomass
Carbon*
Dissolved Organic Matter
Hydrogen-Ion Concentration
Seawater*

Substances

Carbon
Dissolved Organic Matter