The profound effect of harmful cyanobacterial blooms: from food-web and management perspectives

Sigitas Šulčius , Danguolė Montvydienė , Hanna Mazur-Marzec , Jūratė Kasperovičienė , Rokas Rulevičius , Živilė Cibulskaitė

Abstract

Sustainable and effective water management plans must have a reliable risk assessment strategies for harmful cyanobacterial blooms (HABs) that would enable timely decisions to be made, thus avoiding the trespassing of ecological thresholds, leading to the collapse of ecosystem structure and function. Such strategies are usually based on cyanobacterial biomass and/or on the monitoring of known toxins, which may, however, in many cases, under- or over-represent the actual toxicity of the HAB. Therefore, in this study, by the application of growth-inhibition assays using different bacteria, algae, zooplankton and fish species, we assessed the toxicological potential of two cyanobacterial blooms that differed in total cyanobacterial biomass, species composition and cyanopeptide profiles. We demonstrated that neither cyanobacterial community composition nor its relative abundance, nor indeed concentrations of known toxins reflected the potential risk of HAB based on growth-inhibition assays. We discuss our findings in the context of food-web dynamics and ecosystem management, and suggest that toxicological tests should constitute a key element in the routine monitoring of water bodies so as to prevent under-/over-estimation of potential HAB risk for both ecosystem and public health.
Author Sigitas Šulčius
Sigitas Šulčius,,
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, Danguolė Montvydienė
Danguolė Montvydienė,,
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, Hanna Mazur-Marzec (FOG / IO / DMarB)
Hanna Mazur-Marzec,,
- Division of Marine Biotechnology
, Jūratė Kasperovičienė
Jūratė Kasperovičienė,,
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, Rokas Rulevičius
Rokas Rulevičius,,
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, Živilė Cibulskaitė
Živilė Cibulskaitė,,
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Other language title versions
Journal seriesScience of the Total Environment, ISSN 0048-9697, (A 40 pkt)
Issue year2017
Vol609
Pages1443-1450
Publication size in sheets0.5
Keywords in Englishaphanizomenon flos-aquae, Baltic Sea, Curonian Lagoon, cyanotoxins, recreational waters
DOIDOI:10.1016/j.scitotenv.2017.07.253
URL https://doi.org/10.1016/j.scitotenv.2017.07.253
Languageen angielski
LicenseOther; published final; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); with publication
Score (nominal)40
ScoreMinisterial score = 40.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.9 (2) - 2016=5.102 (5)
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