poster

Preliminary results of a biodiversity of Blue-green algae (Cyanobacteria)
along the karstic river Cetina (Croatia)
Malešević, Nikola1, Koletić, Nikola1, Mejdandžić, Maja2, Blinkova, Martina3
1Institute
for Research and Development of Sustainable Ecosystems, Jagodno 100a, Velika Gorica, Croatia
2Botanical Department, Division of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, Croatia
3Institute of biology, Faculty of Natural Sciences and Mathematics, University of Sv. Kiril i Metodij, Skopje, Republic of Macedonia
Anabaena sp.
Gomphosphaeria sp.
Lyngbya sp.
Merismopedia sp.
Oscillatoria sp.
Rivularia sp.
Spirulina sp.
Synechococcus sp.
Anabaena sp.
Gomphosphaeria sp.
Merismopedia sp.
Oscillatoria sp.
Pseudanabaena sp.
Rivularia sp.
Spirulina sp.
Synechococcus sp.
P4
pH=6,3
P1
pH=6,0
Gloeocapsa sp.
Lyngbya sp.
Merismopedia sp.
Synechococcus sp.
P2
pH=6,0
P3
pH=5,8
P7
pH=6,0
Gloeocapsa sp.
P9
pH=6,0
Anabaena sp.
Lyngbya sp.
Merismopedia sp.
Nostoc sp.
Phormidium sp.
Pseudanabaena sp.
Rivularia sp.
Anabaena sp.
Gloeocapsa sp.
Lyngbya sp.
Nostoc sp.
Pseudanabaena sp.
P8
pH=5,9
Rivularia sp.
Spirulina sp.
P6
pH=5,8
Oscillatoria sp.
Pseudanabaena sp.
P10
pH=5,8
P15
pH=5,6
Anabaena sp.
Gloeocapsa sp.
Merismopedia sp.
Oscillatoria sp.
P16
pH=5,6
Anabaena sp.
Chroococcus sp.
Merismopedia sp.
Nostoc sp.
Oscillatoria sp.
Phormidium sp.
Spirulina sp.
Synechococcus sp.
Anabaena sp.
Chroococcus sp.
Gloeocapsa sp.
Lyngbya sp.
Merismopedia sp.
Oscillatoria sp.
Phormidium sp.
Microcystys sp.
Nostoc sp.
Snowella sp.
Anabaena sp.
P13
pH=5,8
P14
pH=5,7
P12
pH=6,3
Investigation of cyanobacterial diversity and composition was
conducted along the river Cetina and artificial reservoir Peruča
which has been used for recreation, in the sub mountain Croatia.
Samples were collected in August 2012 along the river (~ 32,5km)
on 23 study sites including: spring and main flow of the river Cetina
(upstream and downstream from the reservoir Peruča). Fieldwork
colection points are marked on an interactive map (P1, P2...)
P17
pH=6,0
Merismopedia sp.
Pleurocapsa sp.
Chroococcus sp.
Lyngbya sp.
Microcystis sp.
Nostoc sp.
Oscillatoria sp.
Phormidium sp.
Pseudanabaena sp.
Snowella sp.
Cetina’s fountainheads
cave habitat
Cetina’s upstream flow
Peruča reservoir’s coast
Peruča reservoir’s open water
Peruča reservoir’s dam
Cetina’s downstream flow
Gloeocapsa sp.
Lyngbya sp.
Merismopedia sp.
Microcystis sp.
Oscillatoria sp.
Planktothrix sp.
Pseudanabaena sp.
Snowella sp.
10 μm
STUDY SITE
P5
pH=5,7
P1, P2, P3, P4, P5, P6
P7
P8, P9
P10, P11, P12, P13, P15, P16, P17
P14
P18
P19, P20
Gloeocapsa sp.
Merismopedia sp.
Anabaena sp.
Chroococcus sp.
Microcystis sp.
Nostoc sp.
Oscillatoria sp.
Pseudanabaena sp.
Spirulina sp.
Gloeocapsa sp.
P11
pH=6,3
Anabaena sp.
Chroococcus sp.
Gloeocapsa sp.
Gloeothece sp.
Lyngbya sp.
Merismopedia sp.
Nostoc sp.
Oscillatoria sp.
Pseudanabaena sp.
A
B
Anabaena sp.
Chroococcus sp.
Gloeocapsa sp.
Merismopedia sp.
Nostoc sp.
Oscillatoria sp.
D
C
RESULTS
A total of 22 taxa were found of which five taxa with toxic
properties (Anabaena sp., Lyngbya sp., Microcystis sp., Nostoc sp.
and Oscillatoria sp.) have been recorded:
1. Anabaena sp.
2. Chamaesiphon sp.
3. Chroococcus sp.
4. Gloeocapsa sp.
5. Gloeothece sp.
6. Gomphosphaeria sp.
7. Hyella sp.
8. Lyngbya sp.
9. Merismopedia sp.
10. Microcystis sp.
11. Nostoc sp.
12. Oscillatoria sp.
13. Phormidium sp.
14. Planktothrix sp.
15. Pleurocapsa sp.
16. Pseudanabaena sp.
17. Rivularia sp.
18. Scytonema sp.
19. Snowella sp.
20. Spirulina sp.
21. Stigonema sp.
22. Synechococcus sp.
F
E
A – Gleocapsa sp., B – Lyngbya sp., C – Oscillatoria sp., D – Nostoc sp.,
E – Scytonema sp., F – Merismopeida sp.
P19
pH=6,0
Anabaena sp.
Chroococcus sp.
Gloeocapsa sp.
Oscillatoria sp.
Phormidium sp.
Pseudanabena sp.
Rivularia sp.
Scytonema sp.
P20
pH=6,0
Nostoc sp.
Oscillatoria sp.
Phormidium sp.
Pseudanabena sp.
Stigonema sp.
Chroococcus sp.
DAM
P18
pH=6,0
Gloeocapsa sp.
Hyella sp.
Merismopedia sp.
Nostoc sp.
Physical parameters were recorded along the research sites
showed that the pH of the river and the reservoir were similar and
ranged from 5,6 to 6,3 units which corresponded to the ecological
status of the observed water system due to external factors and a
large amount of degraded organic matter with dominance of
cyanobacterial taxa in the water column.
CONCLUSION
Research on the river Cetina indicates how this type of habitat operates and it can point out how some similar
ecosystems can function. Climate change predictions suggest that over a longer term, changes in weather patterns may
increase the cyanobacterial blooms. This in turn may increase the scale of risk to human health by cyanotoxins.
Cyanobacteria adapts to environmental physical conditions and the pH is not critical for the species richness.
Balkan Botanical
Congress 2015
UNIVERSITY CAMPUS RIJEKA – CROATIA
14 – 18 SEPTEMBER 2015
ACKNOWLEDGEMENTS
Authors want to thank Biology Student Association (BIUS) for
supporting field surveys which granted this publication. M.M. has been
supported by Croatian Science Foundation under the project 6433.