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Comparative analysis of phytoplankton community structure and stability in the Arabian Sea and Bay of Bengal using eDNA metabarcoding

文献类型： 外文期刊

作者： Li, Changwen 1 ; Xiao, Ge 1 ; Long, Han 4 ; Ai, Tongxi 1 ; Tang, Fenghua 1 ; Ju, Jianfeng 1 ; Yang, Shenglong 1 ; Pi, Yan 4 ; Gao, Lei 1 ; Ma, Lingbo 1 ; Fan, Wei 1 ; Zhao, Ming 1 ; Zheng, Hanfeng 1 ; Jiang, Keji 1 ;

作者机构： 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China

2.East China Normal Univ, Sch Life Sci, Shanghai 200241, Peoples R China

3.Shanghai Ocean Univ, Shanghai 201306, Peoples R China

4.Fudan Univ, Sch Life Sci, Shanghai 200438, Peoples R China

关键词： eDNA; AS; BB; Phytoplankton; Diversity; Stability

期刊名称：MARINE ENVIRONMENTAL RESEARCH （ 影响因子：3.2； 五年影响因子：3.3 ）

ISSN： 0141-1136

年卷期： 2025 年 210 卷

页码：

收录情况： SCI

摘要： Environmental DNA (eDNA) metabarcoding, a non-invasive method for detecting aquatic organisms, has been widely used in phytoplankton diversity assessment. The Arabian Sea (AS) and the Bay of Bengal (BB), the two major ocean basins of the Northern Indian Ocean, exhibit differences in various aspects due to monsoonal influences. However, few eDNA studies have focused on the comparative research on phytoplankton communities in these two regions. To address this gap, in this study, a comparative analysis of phytoplankton community structure and stability was conducted in the AS and BB using eDNA metabarcoding. Clear differences in diversity and composition of phytoplankton communities between the two regions were observed. Higher richness and diversity were found in the BB than in the AS, and the differences in phytoplankton community structure were primarily driven by the nestedness process. Moreover, dinoflagellates were observed as the dominant taxa, and some dinoflagellate taxa showed significant differences between the two regions. Community assembly mechanism analysis revealed that the stochastic processes exhibited a weaker impact in the AS. Stability assessments, which combined co-occurrence network analysis and the metric of average variability degree, revealed higher community stability in the BB. These results not only confirmed the efficacy of eDNA metabarcoding in assessing phytoplankton diversity and stability, but also provided data support for the conservation of aquatic biodiversity and sustainable ecological management in the Northern Indian Ocean.

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