Environmental-driven dynamics of phytoplankton assemblages in the Bay of Bengal, Southeast coast of India

IF 1.5 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY Marine Ecology-An Evolutionary Perspective Pub Date : 2024-05-27 DOI:10.1111/maec.12812

Vajravelu Manigandan, Ranjit Kumar Sarangi, Danaraj Jeyapragash, Saravanakumar Ayyappan

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Abstract

A study conducted from January to December 2018 examined seasonal variations in horizontal phytoplankton communities. A total of 93 species were identified, including 63 Coscinodiscophyceae, 4 Fragilariophyceae, 7 Bacillariophyceae, 15 Dinophyceae, and 4 Cyanophyceae. The highest species diversity and abundance occurred during the postmonsoon and premonsoon periods. Environmental parameters (viz., temperature, salinity, dissolved oxygen, pH, ammonia, nitrite, silicate, total suspended solids) were all statistically significant except for nitrite (p > .05). Multivariate statistical analyses (PCA and CCA) revealed that in the postmonsoon period, silicate and nitrate were responsible for the proliferation of phytoplankton abundance, species composition and density, while in the premonsoon period, temperature, salinity, and pH significantly influenced and favored specific phytoplankton groups (such as Chaetocerotaceae) in terms of species composition and abundance.

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印度东南沿海孟加拉湾浮游植物群的环境驱动动态变化

2018 年 1 月至 12 月进行的一项研究考察了水平浮游植物群落的季节性变化。共鉴定出 93 个物种，包括 63 个鞘藻科（Coscinodiscophyceae）、4 个片叶藻科（Fragilariophyceae）、7 个芽孢藻科（Bacillariophyceae）、15 个顶叶藻科（Dinophyceae）和 4 个蓝藻科（Cyanophyceae）。季风后和季风前的物种多样性和丰度最高。环境参数（即温度、盐度、溶解氧、pH 值、氨氮、亚硝酸盐、硅酸盐、总悬浮固体）除亚硝酸盐外均有统计学意义（p > .05）。多变量统计分析（PCA 和 CCA）显示，在季风后时期，硅酸盐和硝酸盐是浮游植物丰度、物种组成和密度增加的原因，而在季风前时期，温度、盐度和 pH 显著影响并有利于特定浮游植物群（如 Chaetocerotaceae）的物种组成和丰度。

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来源期刊

Marine Ecology-An Evolutionary Perspective 生物-海洋与淡水生物学

CiteScore

2.70

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Marine Ecology publishes original contributions on the structure and dynamics of marine benthic and pelagic ecosystems, communities and populations, and on the critical links between ecology and the evolution of marine organisms. The journal prioritizes contributions elucidating fundamental aspects of species interaction and adaptation to the environment through integration of information from various organizational levels (molecules to ecosystems) and different disciplines (molecular biology, genetics, biochemistry, physiology, marine biology, natural history, geography, oceanography, palaeontology and modelling) as viewed from an ecological perspective. The journal also focuses on population genetic processes, evolution of life histories, morphological traits and behaviour, historical ecology and biogeography, macro-ecology and seascape ecology, palaeo-ecological reconstruction, and ecological changes due to introduction of new biota, human pressure or environmental change. Most applied marine science, including fisheries biology, aquaculture, natural-products chemistry, toxicology, and local pollution studies lie outside the scope of the journal. Papers should address ecological questions that would be of interest to a worldwide readership of ecologists; papers of mostly local interest, including descriptions of flora and fauna, taxonomic descriptions, and range extensions will not be considered.