Multifaceted Contributions of Coccolithophores to Ocean Carbon Export  

作　　者：Shiqing Li Junwei Zhu Xiaobo Jin Yuanyuan Feng Nianzhi Jiao Wenjing Zhang 

机构地区：[1]State Key Laboratory of Marine Environmental Science,Xiamen Key Laboratory of Urban Sea Ecological Conservation and Restoration,College of Ocean and Earth Sciences,Xiamen University,Xiamen,China [2]School of Ocean and Earth Science,Tongji University,Shanghai,China [3]School of Oceanography,Shanghai Jiao Tong University,Shanghai,China

出　　处：《Ocean-Land-Atmosphere Research》2024年第1期238-253,共16页海洋-陆地-大气研究(英文)

基　　金：supported by the National Natural Science Foundation of China(grant nos.42141003 and 42176147);the National Key Research and Development Program of China(grant no.2022YFF0802204);Xiamen Key Laboratory of Urban Sea Ecological Conservation and Restoration(USER)(grant nos.USER2021-1 and USER2021-5);the Natural Science Foundation of Fujian Province(grant no.2021J01025).

摘　　要：Coccolithophores,a type of unicellular calcifying algae,are widely distributed across the global ocean.They contribute to the ocean carbon cycle by producing organic and inorganic carbon.Hence,they function as multifaceted contributors to oceanic carbon pumps,the biological carbon pump(BCP)and the carbonate counter pump(CCP).Global climate change profoundly impacts ocean environments,leading to ocean acidification,increased sea surface temperature,and nutrient depletion,all of which influence the physiology of coccolithophores.The accumulation and subsequent sinking of carbon produced by coccolithophores contribute to the total carbon export in the water column.This article reviews the physiology and distribution of coccolithophores,expounds on the intricate contribution of coccolithophores to BCP and CCP separately,and summarizes how climate-induced alterations in environmental factors(e.g.,temperature,nutrient supply,light,and carbonate chemistry)affect the carbon accumulation and sinking rate of coccolithophores on the basis of culture experiments and field investigations.This study provides a foundation for assessing the contribution of coccolithophores to carbon export under potential future global warming scenarios.

关 键 词：EXPORT CARBONATE PUMP 

分 类 号：F75[经济管理—国际贸易]