Marine Microalgae: Taxonomy, Diversity and Biogeography

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Marine Biology".

Deadline for manuscript submissions: closed (10 April 2026) | Viewed by 935

Special Issue Editors


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Guest Editor
College of Ocean Sciences, Jeju National University, Jeju-si 63243,Republic of Korea
Interests: phytoplankton; diatom; harmful algal blooms; evolution; sexual reproduction

Special Issue Information

Dear Colleagues,

Marine microalgae are foundational to ocean ecosystems and the global carbon cycle, contributing a major fraction of primary production and biogeochemical fluxes. Yet their true taxonomic breadth and spatial–temporal dynamics remain incompletely resolved, owing to cryptic diversity, plastic morphologies, and undersampling across environmental gradients. Rapid advances in integrative taxonomy, high-throughput sequencing, single-cell ‘omics, and quantitative imaging are now transforming how we delineate species, infer evolutionary relationships, and map biogeographic patterns from coastal shelves to the open ocean and across polar to tropical regimes.

This Special Issue invites studies that refine microalgal systematics and expand our view of diversity using combined morphological, molecular, and ecological evidence, including phylogenomics, metabarcoding, and environmental DNA approaches. We particularly welcome contributions that connect taxonomic resolution to functional traits and environmental niches to explain distributional ranges, endemism, and community turnover under natural variability and climate-driven change. Submissions addressing the biogeography of harmful and bloom-forming taxa, trait–environment coupling, dispersal and population structure, and mechanistic or statistical models that link observation with process are encouraged. Work leveraging remote sensing, autonomous platforms, long-term time series, and culture collections to bridge scales is of special interest, as are method papers and benchmark datasets that improve reproducibility and interoperability.

By bringing together taxonomy, diversity assessment, and biogeographic synthesis, this Special Issue aims to clarify lineage boundaries, reveal hidden diversity, and provide robust, data-driven maps of microalgal distributions that can inform ecosystem forecasting and management in a changing ocean.

Dr. Zhun Li
Dr. Jin Ho Kim
Guest Editors

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Keywords

  • marine microalgae 
  • phytoplankton diversity 
  • integrative taxonomy 
  • phylogenomics 
  • metabarcoding and eDNA 
  • cryptic species 
  • biogeography 
  • trait-based ecology 
  • harmful algal blooms 
  • climate change

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Published Papers (1 paper)

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Research

20 pages, 3517 KB  
Article
Size-Specific Phytoplankton Pigment Characteristics in Jaran and Hansan Bays Based on HPLC Analysis
by Ye Hwi Kim, Seung Min Lee, Jin Ho Kim, Yejin Kim, Sanghoon Park, Jaesoon Kim, Hayoung Choi, Hyo-Keun Jang, Myung Joon Kim, Dabin Lee, Yoon Ji Lee, Jae Hyung Lee and Sang Heon Lee
J. Mar. Sci. Eng. 2026, 14(2), 206; https://doi.org/10.3390/jmse14020206 - 20 Jan 2026
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Abstract
This study investigated the spatial and seasonal dynamics of phytoplankton communities in Jaran Bay, inner Hansan Bay, and outer Hansan Bay, with particular emphasis on size structure and pigment-based indicators of productivity and physiological status. Water sampling was conducted during May, August, and [...] Read more.
This study investigated the spatial and seasonal dynamics of phytoplankton communities in Jaran Bay, inner Hansan Bay, and outer Hansan Bay, with particular emphasis on size structure and pigment-based indicators of productivity and physiological status. Water sampling was conducted during May, August, and October in 2020, 2022, and 2023 and phytoplankton communities were analyzed using size-fractionated chlorophyll a measurements and high-performance liquid chromatography (HPLC) pigment analysis. Chlorophyll a concentrations exhibited pronounced seasonality, with consistently elevated values in August across all bays. Diatoms were predominant throughout the study period; however, their relative contribution declined in outer Hansan Bay during summer, coinciding with increased contributions from cryptophytes and cyanobacteria. Size-fractionated analyses revealed that large-sized phytoplankton (>20 µm) predominantly consisted of diatoms, whereas small-sized phytoplankton (<20 µm) were composed of diatoms and cryptophytes. Comparisons between fluorometric and pigment-based approaches indicated that pigment-based diagnostics overestimated microphytoplankton contributions, attributable to the presence of small-sized diatoms. Pigment indices further revealed that large-sized phytoplankton were characterized by higher photosynthetic carotenoid concentrations and lower photoprotective carotenoid ratios, indicative of enhanced photosynthetic activity and productivity. Overall, these findings highlight the critical role of phytoplankton size structure in regulating productivity and physiological responses in aquaculture-dominated coastal bays. Full article
(This article belongs to the Special Issue Marine Microalgae: Taxonomy, Diversity and Biogeography)
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