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Ecological Connectivity in Two Ancient Lakes: Impact Upon Planktonic Cyanobacteria and Water Quality

Protected Freshwater Ecosystem with Incessant Cyanobacterial Blooming Awaiting a Resolution

Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
Department of Aquaculture, Szent István University, Páter Károly u. 1, 2100 Gödöllő, Hungary
Faculty of Science, Institute of Biology and Ecology, University of Kragujevac, Radoja Domanovića 12, 34 000 Kragujevac, Serbia
Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6 A, 20520 Turku, Finland
Finnish Environment Institute, Marine Research Centre, Agnes Sjöbergin katu 2, 00790 Helsinki, Finland
Author to whom correspondence should be addressed.
Water 2020, 12(1), 129;
Received: 27 November 2019 / Revised: 27 December 2019 / Accepted: 29 December 2019 / Published: 31 December 2019
(This article belongs to the Special Issue Advancing Knowledge on Cyanobacterial Blooms in Freshwaters)
For 50 years persistent cyanobacterial blooms have been observed in Lake Ludoš (Serbia), a wetland area of international significance listed as a Ramsar site. Cyanobacteria and cyanotoxins can affect many organisms, including valuable flora and fauna, such as rare and endangered bird species living or visiting the lake. The aim was to carry out monitoring, estimate the current status of the lake, and discuss potential resolutions. Results obtained showed: (a) the poor chemical state of the lake; (b) the presence of potentially toxic (genera Dolichospermum, Microcystis, Planktothrix, Chroococcus, Oscillatoria, Woronichinia and dominant species Limnothrix redekei and Pseudanabaena limnetica) and invasive cyanobacterial species Raphidiopsis raciborskii; (c) the detection of microcystin (MC) and saxitoxin (STX) coding genes in biomass samples; (d) the detection of several microcystin variants (MC-LR, MC-dmLR, MC-RR, MC-dmRR, MC-LF) in water samples; (e) histopathological alterations in fish liver, kidney and gills. The potential health risk to all organisms in the ecosystem and the ecosystem itself is thus still real and present. Although there is still no resolution in sight, urgent remediation measures are needed to alleviate the incessant cyanobacterial problem in Lake Ludoš to break this ecosystem out of the perpetual state of limbo in which it has been trapped for quite some time. View Full-Text
Keywords: cyanobacteria; blooms; microcystin; Lake Ludoš cyanobacteria; blooms; microcystin; Lake Ludoš
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MDPI and ACS Style

Tokodi, N.; Drobac Backović, D.; Lujić, J.; Šćekić, I.; Simić, S.; Đorđević, N.; Dulić, T.; Miljanović, B.; Kitanović, N.; Marinović, Z.; Savela, H.; Meriluoto, J.; Svirčev, Z. Protected Freshwater Ecosystem with Incessant Cyanobacterial Blooming Awaiting a Resolution. Water 2020, 12, 129.

AMA Style

Tokodi N, Drobac Backović D, Lujić J, Šćekić I, Simić S, Đorđević N, Dulić T, Miljanović B, Kitanović N, Marinović Z, Savela H, Meriluoto J, Svirčev Z. Protected Freshwater Ecosystem with Incessant Cyanobacterial Blooming Awaiting a Resolution. Water. 2020; 12(1):129.

Chicago/Turabian Style

Tokodi, Nada, Damjana Drobac Backović, Jelena Lujić, Ilija Šćekić, Snežana Simić, Nevena Đorđević, Tamara Dulić, Branko Miljanović, Nevena Kitanović, Zoran Marinović, Henna Savela, Jussi Meriluoto, and Zorica Svirčev. 2020. "Protected Freshwater Ecosystem with Incessant Cyanobacterial Blooming Awaiting a Resolution" Water 12, no. 1: 129.

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