Next Article in Journal
Extension of the Recorded Host Range of Caribbean Christmas Tree Worms (Spirobranchus spp.) with Two Scleractinians, a Zoantharian, and an Ascidian
Previous Article in Journal
Responses of Rotifer Community to Microhabitat Changes Caused by Summer-Concentrated Rainfall in a Shallow Reservoir, South Korea
Open AccessArticle

Variability and Community Composition of Marine Unicellular Eukaryote Assemblages in a Eutrophic Mediterranean Urban Coastal Area with Marked Plankton Blooms and Red Tides

1
School of Science and Technology, International Hellenic University, 57001 Thermi, Greece
2
Department of Botany, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
3
Geomar Helmholtz Centre for Ocean Research Kiel, 24105 Kiel, Germany
*
Author to whom correspondence should be addressed.
Diversity 2020, 12(3), 114; https://doi.org/10.3390/d12030114
Received: 7 February 2020 / Revised: 19 March 2020 / Accepted: 20 March 2020 / Published: 21 March 2020
(This article belongs to the Section Marine Diversity)
The Thessaloniki Bay is a eutrophic coastal area which has been characterized in recent years by frequent and intense phytoplankton blooms and red tides. The aim of the study was to investigate the underexplored diversity of marine unicellular eukaryotes in four different sampling sites in Thessaloniki Bay during a year of plankton blooms, red tides, and mucilage aggregates. High-Throughput Sequencing (HTS) was applied in extracted DNA from weekly water samples targeting the 18S rRNA gene. In almost all samples, phytoplankton blooms and/or red tides and mucilage aggregates were observed. The metabarcoding analysis has detected the known unicellular eukaryotic groups frequently observed in the Bay, dominated by Bacillariophyta and Dinoflagellata, and revealed taxonomic groups previously undetected in the study area (MALVs, MAST, and Cercozoa). The dominant OTUs were closely related to species known to participate in red tides, harmful blooms, and mucilage aggregates. Other OTUs, present also during the blooms in low abundance (number of reads), were closely related to known harmful species, suggesting the occurrence of rare taxa with potential negative impacts on human health not detectable with classical microscopy. Overall, the unicellular eukaryote assemblages showed temporal patterns rather than small-scale spatial separation responding to the variability of physical and chemical factors. View Full-Text
Keywords: 18S rRNA gene; protists; eutrophication; urban front; spatiotemporal assemblages; high-throughput sequencing 18S rRNA gene; protists; eutrophication; urban front; spatiotemporal assemblages; high-throughput sequencing
Show Figures

Graphical abstract

MDPI and ACS Style

Genitsaris, S.; Stefanidou, N.; Moustaka-Gouni, M.; Sommer, U.; Tsipas, G. Variability and Community Composition of Marine Unicellular Eukaryote Assemblages in a Eutrophic Mediterranean Urban Coastal Area with Marked Plankton Blooms and Red Tides. Diversity 2020, 12, 114.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop