Phytoplankton Communities and Cyanotoxin Production in Some Bulgarian Lowland Lakes and Reservoirs

Detelina Belkinova; Ivanka Teneva; Stefan Kazakov; Silvia Stamenova

doi:10.21697/seb.2021.19.4.08

Opublikowane: 2022-01-05

Tom 19 Nr 4 (2021)

Zespoły fitoplanktonu i produkcja cyjanotoksyn w wybranych nizinnych jeziorach i zbiornikach Bułgarii

Detelina Belkinova

, Ivanka Teneva

, Stefan Kazakov

, Silvia Stamenova

Studia Ecologiae et Bioethicae

Dział: Artykuły naukowe

https://doi.org/10.21697/seb.2021.19.4.08

Abstrakt

Najbardziej widocznym efektem eutrofizacji wód są coraz obszerniejsze i dłużej utrzymujące się zakwity sinic. Często towarzyszy im produkcja cyjanotoksyn w stężeniach niebezpiecznych dla zdrowia człowieka. W niniejszej pracy analizowaliśmy zespoły fitoplanktonu w czterech nizinnych zbiornikach wodnych pod kątem występowania zakwitów sinicowych i produkcji toksyn. Na podstawie badań bioobjętości sinic określono stopień potencjalnego ryzyka związanego z produkcją niebezpiecznych stężeń cyjanotoksyn w dwóch zbiornikach Onogur (OR) i Asparuhov Val (AVR) oraz w jeziorze Srebarna (SL). Stopień ryzyka w tych akwenach określono na poziomie alarmowym 1 "Alert Level 1". Pod koniec okresu letniego w AVR i SL bioobjętość sinic przekroczyła wartość progową 8 mm³ L^-1 (dla wód rekreacyjnych). W OR odnotowaliśmy stały zakwit Microcystis spp. przez cały sezon letni i wyjątkowo wysoką średnią sezonową wartość całkowitej bioobjętości (146,5 mm³ L^-1). Mikrocystyny wykryto we wszystkich czterech badanych zbiornikach wodnych, przy czym najwyższe stężenie odnotowano w OR (6 µg L^-1). Cylindrospermopsynę wykryto w AVR i OR, natomiast saksytoksyny - w AVR i SL. Stwierdzone stężenia cyjanotoksyn nie przekraczają wartości dopuszczalnych w wodach rekreacyjnych. Jednak zwiększone bioobjętości sinic wskazują, że w trzech z czterech analizowanych zbiorników wodnych należałoby monitorować poziom cyjanotoksyn w okresie letnim.

Słowa kluczowe:

fitoplankton, zakwity cyjanobakterii, cyjanotoksyny, monitoring

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Zasady cytowania

Belkinova, D., Teneva, I., Kazakov, S., & Stamenova, S. (2022). Zespoły fitoplanktonu i produkcja cyjanotoksyn w wybranych nizinnych jeziorach i zbiornikach Bułgarii. Studia Ecologiae Et Bioethicae, 19(4), 97–109. https://doi.org/10.21697/seb.2021.19.4.08

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Utwór dostępny jest na licencji Creative Commons Uznanie autorstwa – Bez utworów zależnych 4.0 Międzynarodowe.

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Detelina Belkinova

detbel18@gmail.com
https://orcid.org/0000-0003-0738-4871

Afiliacja:

Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Bułgaria

Ivanka Teneva

http://orcid.org/0000-0002-8516-181X

Afiliacja:

Faculty of Biology, Paisii Hilendarski University of Plovdiv, Bułgaria

Stefan Kazakov

https://orcid.org/0000-0001-6078-2938

Afiliacja:

Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Bułgaria

Silvia Stamenova

Afiliacja:

Faculty of Biology, Paisii Hilendarski University of Plovdiv, Bułgaria