Seasonal variation in size structure and production of autotrophic plankton community in eutrophied, low-light environment: A focus on Mesodinium rubrum
Labucis, A.; Labuce, A.; Jurgensone, I.; Barda, I.; Andersone, I.; Ikauniece, A. (2023). Seasonal variation in size structure and production of autotrophic plankton community in eutrophied, low-light environment: A focus on Mesodinium rubrum. Oceanologia 65(2): 398-409. https://dx.doi.org/10.1016/j.oceano.2022.11.003
In: Oceanologia: Quarterly journal of basic research in marine sciences with emphasis on European seas. Polish Academy of Sciences, Institute of Oceanology: Wroclaw; Gdansk. ISSN 0078-3234; e-ISSN 2300-7370, more
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| Keywords |
Mesodinium rubrum (Lohmann, 1908) [WoRMS]
Marine/Coastal |
| Author keywords |
primary production; coastal; brackish; Gulf of Riga; Baltic Sea; ciliate |
| Authors | | Top |
- Labucis, A.
- Labuce, A.
- Jurgensone, I.
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- Barda, I.
- Andersone, I.
- Ikauniece, A.
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| Abstract |
Temporal variations in the primary production of the size-fractionated autotrophic plankton community were studied in coastal-estuarine waters of the eutrophic Gulf of Riga, Baltic Sea. The community was net-autotrophic during spring and summer and net-heterotrophic during autumn. The results of the present study clearly demonstrate strong covariation between net primary production (NPP) and <56 µm fractionated community biomass, particularly small-sized (16–33 µm) Mesodinium rubrum, implying that the majority of NPP stems from the lower end of the size spectrum. A pronounced size distribution shift was observed within the M. rubrum population. Large-sized (length ≥34 µm) M. rubrum was the most abundant in the first half of the productive season (until week 24), whereas small-sized M. rubrum dominated during the stratified period. |
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