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Title: Prey stoichiometry and phytoplankton and zooplankton composition influence the production of marine crustacean zooplankton
Authors: Ho, Pei-Chi
Wong, Esther
Lin, Fan-Sian
Sastri, R. Akash
García-Comas, Carmen
Okuda, Noboru  kyouindb  KAKEN_id
Shiah, Fuh-Kwo
Gong, Gwo-Ching
Yam, S.W. Rita
Hsieh, Chih-hao
Author's alias: 奥田, 昇
Keywords: Ecological stoichiometry
Subtropical marine copepod production
Artificial cohort method
In situ incubation
Phytoplankton and copepod composition
Issue Date: Jul-2020
Publisher: Elsevier BV
Journal title: Progress in Oceanography
Volume: 186
Thesis number: 102369
Abstract: Manipulative laboratory studies provide strong evidence that phytoplankton primary production (PP), stoichiometry, and taxonomic composition affect marine copepod production (CP), which is the biomass-dominant zooplankton group. However, field observations investigating the simultaneous effects of prey stoichiometric quality, PP, and phytoplankton and copepod taxonomic composition on CP remain relatively rare. Here, we examined how in situ CP is affected by carbon:nitrogen:phosphorus (C:N:P) molar ratios of prey, PP, and phytoplankton and copepod composition in the East China Sea (ECS) and Dongsha Atoll in the South China Sea. Field estimates of CP were measured directly as the product of in situ instantaneous growth rate estimates by artificial cohort method and copepod biomass. We found that CP was low when prey C:N and C:P ratios were high, but the variation of CP was large when prey C:N and C:P ratios were low. CP did not, however, show a strong positive relationship with PP. Multivariate regression indicates that prey C:N ratio explains most of the variation of CP, followed by phytoplankton and copepod compositions, while PP exerts a weak influence on CP. Our findings suggest that copepod community production is affected by prey stoichiometry, with further modification by copepod and phytoplankton compositions in the ECS. However, the total variance explained by those key factors is less than 50%, indicating that marine copepod growth and biomass production are influenced by complex interactions in nature.
Rights: © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
The full-text file will be made open to the public on 1 July 2022 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/254345
DOI(Published Version): 10.1016/j.pocean.2020.102369
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