Spatiotemporal distribution of size-fractioned phytoplankton in the Yalu River Estuary, China

• Published in: Ecosystem health and sustainability Vol. 8; no. 1
• Main Authors: Liu, Yin, Song, Lun, Song, GuangJun, Wu, JinHao, Wang, Kun, Wang, ZaoHui, Liu, SuXuan
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 31.12.2022; Taylor & Francis Ltd; American Association for the Advancement of Science (AAAS)
• Subjects: Biomass; Cellulose acetate; Chemical oxygen demand; Community structure; Environmental factors; Estuaries; Eukaryotic phytoplankton; Exports; Fisheries; Gene amplification; Genetic testing; Grain size; high-throughput sequencing; Laboratories; Next-generation sequencing; Nitrogen; Nitrogen dioxide; particle size and structure; Phytoplankton; Plankton; Quality control; Rivers; Seawater; Shellfish; Software; Spatial distribution; Temporal distribution; Temporal variations; Yalu River Estuary
• ISSN: 2096-4129; 2332-8878
• DOI: 10.1080/20964129.2022.2133637

The grain size structure of phytoplankton has great influence on shellfish culture. The present study aimed to assess the spatial and temporal variation in the phytoplankton community structure in the Yalu River Estuary and to explore the relationship between the phytoplankton community structure and various environmental parameters in 2020. High-throughput sequencing was used in this study. The results showed that nanophytoplankton, especially Karlodinium veneficum, dominated the estuary throughout the year. The biomass ratio of picophytoplankton, nanophytoplankton, and microphytoplankton were 20:63:17 in spring, 30:44:26 in summer, 1:38:61 in autumn, and 2:45:53 in winter, respectively. Meanwhile, Dinophyta had the greatest biomass throughout the year, followed by Bacillariophyta. On the spatial dimension (Station average), COD, T, SST had a positive impact on total phytoplankton communities, and Dep had a negative impact. In the time dimension (Monthly average), the environmental factor that significantly controlled the phytoplankton community structure were NO2 and SST.