Skeletonema species (Bacillariophyta) from the northwestern Sea of Japan: morphology, ecology, seasonal and long-term dynamics
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Olga G. Shevchenko
Olga G. Shevchenko, PhD is a senior researcher at the Laboratory of Marine Microbiota, NSCMB FEB RAS, Vladivostok, Russia, and an associate professor at the Department of Water Bioresources and Aquaculture, Far Eastern State Technical Fisheries University, Vladivostok, Russia. Her scientific interests include marine phytoplankton, taxonomy, morphology and ecology. She specializes in taxonomy and ecology of bloom-forming diatoms, long term monitoring of abundance trends, systematics and taxonomy.
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Anna A. Ponomareva
Anna A. Ponomareva, PhD is a researcher at the Laboratory of Deep-Sea Research, NSCMB FEB RAS, Vladivostok, Russia. Her scientific interests include marine phytoplankton, taxonomy, morphology and ecology. She specializes in taxonomy and ecology of bloom-forming diatoms, monitoring, culturing, electron microscopy and spectrometry.
Maria A. Shulgina is a PhD student of aquatic biology at the NSCMB FEB RAS, a junior researcher at the Laboratory of Marine Mammals, NSCMB FEB RAS, Vladivostok, Russia, as well as a senior specialist at the Primorsky Aquarium Shared Equipment Facility, Vladivostok, Russia. Her scientific interests include diatoms, cell morphology and systematics. She specializes in light microscopy, scanning light microscopy, isolation and culturing of unicellular algae, monitoring and identification of phytoplankton.
Kirill O. Tevs is a PhD student of ecology at the Institute of the World Ocean, Far Eastern Federal University, Vladivostok, Russia and a specialist at the Primorsky Aquarium Shared Equipment Facility, Vladivostok, Russia. His scientific interests include ecology, biology, taxonomy of unicellular algae. He specializes in mathematical statistics, database handling, transmission electron microscopy, spectrophotometry, taxonomy and ecology of marine phytoplankton.
Tatiana Yu. Orlova, PhD is a lead researcher and scientific head of the Laboratory of Marine Microbiota, NSCMB FEB RAS and scientific head of the Marine Biobank, NSCMB FEB RAS, Vladivostok, Russia. Her scientific interests include marine planktonic and benthic microalgae, taxonomy, ecology, physiology, genetics and biochemistry. She specializes in monitoring harmful algae and biotoxins in the seas of the Russian Far East and investigating marine microbiomes and interactions between their members (microalgae and associated bacteria and fungi).
Abstract
Skeletonema species are among the most important components of phytoplankton communities in the temperate and tropical Pacific Ocean. Data on Skeletonema species diversity and abundance in the northeastern Pacific are fragmentary. The long-term observations (1996–2019) of the phytoplankton from the coastal waters of the northwestern Sea of Japan resulted in five Skeletonema species being recorded: Skeletonema costatum, S. dohrnii, S. japonicum, S. marinoi and S. menzelii. For each of the species, a morphological description is provided based on electron microscopy. Ecological factors influencing the distribution of the species and their occurrence under certain environmental parameters are discussed. One of the species, S. menzelii, is a new record for Russia. Skeletonema costatum was confirmed to occur in the study area. Seasonal and interannual changes in the abundance of Skeletonema species were studied. The concentrations of the species varied from 20 cells l−1 to 12,700,000 cells l−1. From 1996 to 2018 there was a downward trend in the numbers of Skeletonema. Skeletonema japonicum was noted for the first time to bloom. Skeletonema dohrnii formed summer blooms; S. japonicum bloomed in the autumn. No Skeletonema blooms were detected in the winter months.
Funding source: Russian Foundation for Basic Research
Award Identifier / Grant number: 19-04-00752
About the authors
Olga G. Shevchenko, PhD is a senior researcher at the Laboratory of Marine Microbiota, NSCMB FEB RAS, Vladivostok, Russia, and an associate professor at the Department of Water Bioresources and Aquaculture, Far Eastern State Technical Fisheries University, Vladivostok, Russia. Her scientific interests include marine phytoplankton, taxonomy, morphology and ecology. She specializes in taxonomy and ecology of bloom-forming diatoms, long term monitoring of abundance trends, systematics and taxonomy.
Anna A. Ponomareva, PhD is a researcher at the Laboratory of Deep-Sea Research, NSCMB FEB RAS, Vladivostok, Russia. Her scientific interests include marine phytoplankton, taxonomy, morphology and ecology. She specializes in taxonomy and ecology of bloom-forming diatoms, monitoring, culturing, electron microscopy and spectrometry.
Maria A. Shulgina is a PhD student of aquatic biology at the NSCMB FEB RAS, a junior researcher at the Laboratory of Marine Mammals, NSCMB FEB RAS, Vladivostok, Russia, as well as a senior specialist at the Primorsky Aquarium Shared Equipment Facility, Vladivostok, Russia. Her scientific interests include diatoms, cell morphology and systematics. She specializes in light microscopy, scanning light microscopy, isolation and culturing of unicellular algae, monitoring and identification of phytoplankton.
Kirill O. Tevs is a PhD student of ecology at the Institute of the World Ocean, Far Eastern Federal University, Vladivostok, Russia and a specialist at the Primorsky Aquarium Shared Equipment Facility, Vladivostok, Russia. His scientific interests include ecology, biology, taxonomy of unicellular algae. He specializes in mathematical statistics, database handling, transmission electron microscopy, spectrophotometry, taxonomy and ecology of marine phytoplankton.
Tatiana Yu. Orlova, PhD is a lead researcher and scientific head of the Laboratory of Marine Microbiota, NSCMB FEB RAS and scientific head of the Marine Biobank, NSCMB FEB RAS, Vladivostok, Russia. Her scientific interests include marine planktonic and benthic microalgae, taxonomy, ecology, physiology, genetics and biochemistry. She specializes in monitoring harmful algae and biotoxins in the seas of the Russian Far East and investigating marine microbiomes and interactions between their members (microalgae and associated bacteria and fungi).
Acknowledgments
The authors extend their gratitude to two independent reviewers for their valuable feedback that resulted in a much-improved manuscript. The research was conducted at the Primorsky Aquarium Shared Equipment Facility of the A. V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences (NSCMB FEB RAS). The authors are sincerely grateful to the staff of the Far Eastern Center for Electron Microscopy of the A. V. Zhirmunsky National Scientific Center of Marine Biology FEB RAS for their assistance with electron microscopy.
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Author contributions: O.G. Shevchenko: study conception and design, field material treatment, electron microscopy, analysis and interpretation of study results, manuscript preparation. A.A. Ponomareva: field material treatment, culturing, electron microscopy, data classification, analysis and interpretation of study results, manuscript preparation. M.A. Shulgina: field material treatment, culturing. K. O. Tevs: transmission electron microscopy. T.Yu. Orlova: monitoring survey management, database creation. The authors are fully responsible for the contents of the manuscript.
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Research funding: This study was supported by the Russian Foundation for Basic Research grant # 19-04-00752.
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Conflict of interest statement: The authors declare that they have no conflicts of interest regarding this article.
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Compliance with ethical standards: All procedures followed were in accordance with the laws of the Russian Federation.
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- In this issue
- Obituary
- Robert Thayer Wilce, pioneer of Arctic marine botany (9 December 1924–26 February 2022)
- Taxonomy/Phylogeny and Biogeography
- Skeletonema species (Bacillariophyta) from the northwestern Sea of Japan: morphology, ecology, seasonal and long-term dynamics
- Three new species of Asteromenia (Hymenocladiaceae, Rhodophyta) from Australia
- Genomics
- Genetic diversity of Undaria pinnatifida populations from China and their genetic relationship with those from Japan and Korea as revealed by mitochondrial and nuclear DNA sequences
- Development and validation of microsatellite markers for Sargassum fusiforme based on transcriptomic data
- Chemistry and Applications
- Analysis of Peruvian seaweed exports during the period 1995–2020 using trade data
Artikel in diesem Heft
- Frontmatter
- In this issue
- Obituary
- Robert Thayer Wilce, pioneer of Arctic marine botany (9 December 1924–26 February 2022)
- Taxonomy/Phylogeny and Biogeography
- Skeletonema species (Bacillariophyta) from the northwestern Sea of Japan: morphology, ecology, seasonal and long-term dynamics
- Three new species of Asteromenia (Hymenocladiaceae, Rhodophyta) from Australia
- Genomics
- Genetic diversity of Undaria pinnatifida populations from China and their genetic relationship with those from Japan and Korea as revealed by mitochondrial and nuclear DNA sequences
- Development and validation of microsatellite markers for Sargassum fusiforme based on transcriptomic data
- Chemistry and Applications
- Analysis of Peruvian seaweed exports during the period 1995–2020 using trade data
