Temporal and spatial distribution characteristics of nutrients in Clarion-Clipperton Fracture Zone in the Pacific in 2017

Baohong Chen; Kaiwen Zhou; Kang Wang; Jigang Wang; Sumin Wang; Xiuwu Sun; Jinmin Chen; Cai Lin; Hui Lin

doi:10.1007/s13131-021-1931-y

Volume 41 Issue 1

Jan. 2022

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Article Navigation > Acta Oceanologica Sinica > 2022 > 41(1): 1-10

Baohong Chen, Kaiwen Zhou, Kang Wang, Jigang Wang, Sumin Wang, Xiuwu Sun, Jinmin Chen, Cai Lin, Hui Lin. Temporal and spatial distribution characteristics of nutrients in Clarion-Clipperton Fracture Zone in the Pacific in 2017[J]. Acta Oceanologica Sinica, 2022, 41(1): 1-10. doi: 10.1007/s13131-021-1931-y

Citation:

Baohong Chen, Kaiwen Zhou, Kang Wang, Jigang Wang, Sumin Wang, Xiuwu Sun, Jinmin Chen, Cai Lin, Hui Lin. Temporal and spatial distribution characteristics of nutrients in Clarion-Clipperton Fracture Zone in the Pacific in 2017[J]. Acta Oceanologica Sinica, 2022, 41(1): 1-10. doi: 10.1007/s13131-021-1931-y

Citation:

Baohong Chen, Kaiwen Zhou, Kang Wang, Jigang Wang, Sumin Wang, Xiuwu Sun, Jinmin Chen, Cai Lin, Hui Lin. Temporal and spatial distribution characteristics of nutrients in Clarion-Clipperton Fracture Zone in the Pacific in 2017[J]. Acta Oceanologica Sinica, 2022, 41(1): 1-10. doi: 10.1007/s13131-021-1931-y

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Temporal and spatial distribution characteristics of nutrients in Clarion-Clipperton Fracture Zone in the Pacific in 2017

doi: 10.1007/s13131-021-1931-y

1.
Third Institute of Oceanography, Ministry of Natural Resource, Xiamen 361005, China
2.
Institute for Advanced Ocean Study, Ocean University of China, Qingdao 266003, China

Funds: The Eastern Pacific Ecoenvironment Monitoring and Protection Project under contract No. DY135-E2-5-02; the Global Change and Air-sea Interaction II under contract No. GASI-01-NPAC-STsum; the Scientific Research Foundation of the Third Institute of Oceanography, Ministry of Natural Resources of China under contract No. 2019017.

More Information

Corresponding author: E-mail: lincai@tio.org.cn; linhui@tio.org.cn
Received Date: 2021-01-05
Accepted Date: 2021-02-19

Available Online: 2021-12-02

Publish Date: 2022-01-10

Abstract

Abstract

This research investigated eight stations in Clarion-Clipperton Fracture Zone (CCFZ) in the eastern tropical Pacific in 2017 to study the spatial distribution characteristics of nutrients and chlorophyll a (Chl a) concentration, and compared nutrient concentrations and molar ratios with those of other investigations 20 years ago in the same area. The study found that dissolved inorganic nutrient (N, P and Si) concentrations were lowest in the upper layer, and increased from surface to some depths, then they decreased a little to the bottom. N was the limited nutrient factor for the growth of phytoplankton community. Although nutrient concentrations and molar ratios have no obvious changes in 2017 comparing those in 1998−2003, supplemented from the equatorial Pacific, nutrient concentrations in the study area were higher than those in seamounts in the North Pacific and Station ALOHA. Furthermore, this study used Generalized Additive Models (GAMs) to infer the underlying bottom-up factors controlling phytoplankton abundance (Chl a concentration), showing that depth, salinity and ${\rm{PO}}_4^{3 - }{\text -}{\rm{ P}} $ concentration were major factors controlling the growth of phytoplankton community. Furthermore, this study can provide basic data and theoretical support for the development of polymetallic nodule area and its long-term impact assessment on the environment.
- nutrients,
- Chl a,
- GAMs,
- CCFZ,
- Pacific

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