Next Article in Journal
Forest Diversity and Structure in the Amazonian Mountain Ranges of Southeastern Ecuador
Previous Article in Journal
Bacteria with Different Assemblages in the Soil Profile Drive the Diverse Nutrient Cycles in the Sugarcane Straw Retention Ecosystem
Previous Article in Special Issue
Effect of Hydrographic Variability on the Distribution of Microbial Communities in Taiwan Strait in Winter
Open AccessArticle

Changes in Heterotrophic Picoplankton Community Structure after Induction of a Phytoplankton Bloom under Different Light Regimes

1
Department of Biological Applications and Technology, University of Ioannina, 45110 Ioannina, Greece
2
Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, 38446 Volos, Greece
3
School of Biology, Department of Botany, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
4
Helmholtz Center for Ocean Research (GEOMAR), Dusternbrooker Weg 20, 24105 Kiel, Germany
*
Author to whom correspondence should be addressed.
Diversity 2019, 11(10), 195; https://doi.org/10.3390/d11100195
Received: 20 September 2019 / Revised: 11 October 2019 / Accepted: 11 October 2019 / Published: 15 October 2019
(This article belongs to the Special Issue Biodiversity of Marine Microbes)
Bacterial and archaeal diversity and succession were studied during a mesocosm experiment that investigated whether changing light regimes could affect the onset of phytoplankton blooms. For this, 454-pyrosequencing of the bacterial V1-V3 and archaeal V3-V9 16S rRNA regions was performed in samples collected from four mesocosms receiving different light irradiances at the beginning and the end of the experiment and during phytoplankton growth. In total, 46 bacterial operational taxonomic units (OTUs) with ≥1% relative abundance occurred (22–34 OTUs per mesocosm). OTUs were affiliated mainly with Rhodobacteraceae, Flavobacteriaceae and Alteromonadaceae. The four mesocosms shared 11 abundant OTUs. Dominance increased at the beginning of phytoplankton growth in all treatments and decreased thereafter. Maximum dominance was found in the mesocosms with high irradiances. Overall, specific bacterial OTUs had different responses in terms of relative abundance under in situ and high light intensities, and an early phytoplankton bloom resulted in different bacterial community structures both at high (family) and low (OTU) taxonomic levels. Thus, bacterial community structure and succession are affected by light regime, both directly and indirectly, which may have implications for an ecosystem’s response to environmental changes. View Full-Text
Keywords: bacterial and archaea diversity; light; climate change; phytoplankton blooms; 454-pyrosequencing bacterial and archaea diversity; light; climate change; phytoplankton blooms; 454-pyrosequencing
Show Figures

Figure 1

MDPI and ACS Style

Karayanni, H.; Kormas, K.A.; Moustaka-Gouni, M.; Sommer, U. Changes in Heterotrophic Picoplankton Community Structure after Induction of a Phytoplankton Bloom under Different Light Regimes. Diversity 2019, 11, 195.

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
Back to TopTop