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Oceanological and Hydrobiological Studies
Volume 46 (2017): Issue 1 (March 2017)
Open Access
Massive occurrence of the alien invasive species
Pleodorina indica
(Volvocales, Chlorophyta) in a reservoir located in urban areas of Central Poland
Piotr Knysak
Piotr Knysak
and
Joanna Żelazna-Wieczorek
Joanna Żelazna-Wieczorek
| Mar 06, 2017
Oceanological and Hydrobiological Studies
Volume 46 (2017): Issue 1 (March 2017)
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Article Category:
Short communication
Published Online:
Mar 06, 2017
Page range:
116 - 122
Received:
Apr 08, 2016
Accepted:
Jun 17, 2016
DOI:
https://doi.org/10.1515/ohs-2017-0012
© Faculty of Oceanography and Geography, University of Gdańsk, Poland. All rights reserved.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Figure 1
Location of the flow-through reservoir with Pleodorina indica (Iyengar) Nozaki
Figure 2
Air and water temperature, pH reaction and conductivity at the sampling site during the study
Figure 3
Pleodorina indica (Iyengar) H. Nozaki (A-K) Light microscope, Nikon Eclipse 50i (A) Dark field view, monoculture colony, magnification 10×4; (B-I) magnification 10×40; (J, K) arrows indicate flagellum, colony stained with blue methylene, magnification 10×40, 10×100
Figure 4
Pleodorina indica (A-F) Confocal microscope, Leica SP-8. Scale bar 20 μm (A) arrows indicate individual sheaths in the gelatinous matrix; (D, E) Surface of the 32-cells colony; (F) 64-cells colony; (B) arrows indicate vegetative cells; (C) arrows indicate somatic cells; (D) arrows indicate vegetative cells during division (asexual reproduction); (E, F) arrows indicate undulating peripheries of the colony
Figure 5
Average monthly temperatures from 1995-2014 in comparison with average monthly temperatures from 2015, in Łódź