B vitamins supplementation induced shifts in phytoplankton dynamics and copepod populations in a subtropical coastal area

Frontiers in Marine Science

Marine Science

Edmond Sanganyado¹  Hancheng Zhao²  Wenhua Liu²  Xiaohan Chen²  Jianqing Lin²  Bo Liang²  Qun Ma²  Lin Wang³ 

[1] Department of Applied Chemistry, Northumbria University, Newcastle upon Tyne, United Kingdom;Guangdong Provincial Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou, China;Guangdong Provincial Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou, China;College of Chemical and Environmental Engineering, Hanshan Normal University, Chaozhou, China;

关键词: B vitamins;    phytoplankton communities;    copepods;    auxotrophy;    plankton dynamics;   

DOI  :  10.3389/fmars.2023.1206332

 received in 2023-04-15, accepted in 2023-08-07,  发布年份 2023

来源: Frontiers

【 摘 要 】

IntroductionB vitamins play a crucial role in shaping phytoplankton and zooplankton communities in marine ecosystems, yet their impact on community dynamics remains poorly understood.MethodsWe carried out in situ incubation experiments of B vitamins supplementation to explore the response pattern of phytoplankton and zooplankton community compositions.ResultsThe results showed that vitamins B1, B2, B6 and B12 promoted the growth of phytoplankton, and the total Chl α in 87.5% of the supplemented B vitamin treatments showed a significant positive response (p < 0.05). Supplementation with these B vitamins significantly altered the community composition of phytoplankton, and 75% of the B vitamin-supplemented treatments showed an increase in the relative abundance of Minutocellus, Thalassiosirales, Odontella, Prymnesiales and Ditylum, considered mainly to be the result of B vitamin auxotrophy. In contrast, a significant decrease in Copepoda, including Calanoida and Cyclopoida, was observed in 87.5% of treatments. The observed shifts in community composition were attributed to the auxotrophy of certain diatoms and Prymnesiales for B vitamins. These shifts subsequently led to negative correlations (Spearman Rho < -0.8) between the abundance of these phytoplankton species and Copepoda populations.DiscussionThese findings advance our understanding of the complex interactions between micronutrient availability and plankton community dynamics.

【 授权许可】

Unknown   
Copyright © 2023 Wang, Zhao, Sanganyado, Liang, Chen, Ma, Lin and Liu