Bloom of cyanobacteria and its impact from ecosystem to socio ecosystems

Cyanobacteria are ecologically one of the most prolific groups of phototrophic prokary otes both in marine and freshwater habitats.Harmful cyanobacteria blooms “CyanoHAB” cause s severe problemsinfresh and brackish waters for aquatic life.Copious growth of cyanobacteria in freshwater, estuarine, and coastal ecosystems due to increased anthropogenic eutrophic ation and global climate change has created serious concern toward harmful bloom formation an d surface water contamination all over the wor ld. In this study, by the application of growth-inhibition assays using different fish species, we assessed the toxicological potential of two cyano bacterial blooms e. g. Microcystisaeruginosa an d Nodulariaspumigenathat differed in total cyano bacterial biomass and species composition.Cyan otoxin (mainly microcystins, MCs, Nodularin) im pactsthe aquatic organisms and soil irrigated b y water containing these toxins.Direct or indirect methods contribute to cyanotoxin transfer throu gh the food chain, and thus constitute a potent h ealth risk source.The main objective of this work was to understand the eventualphytoto xicity of cyanotoxins (microcystins and Nodularin) as the major agricultural impacts induced bythe use of contaminated water for irrigation.Th e study confirms the harmfuleffects (ecologi cal, eco-physiological, socio-economical and sanitary risk) of dissolvedMCs and Nodularin on fish. MC and Nodularin accumulation in fish c ould pose a potential risk for human health, if the MCs intake exceeded therecommended tolerable limits. In general, these cited inves tigations references confirm the harmfuleffects (ecological, eco-physiological, socio-economical and sanitary risk) of dissolved MCs onagr icultural plants. Thus, cyanotoxinphytotoxicity highlights the need for the surveillance ofCyano HABand the monitoring of water irrigation quality as well as for drinking water. Our findings suggests that toxicological tests should constitute a key element in the routine monitoring of water bodiesso as to prevent under-over-estim ation of potential HAB risk for both ecosystem and public health.

Cyanobacteria are ecologically one of the most prolific groups of phototrophic prokary otes both in marine and freshwater habitats.Harmful cyanobacteria blooms “CyanoHAB” cause s severe problemsinfresh and brackish waters for aquatic life.Copious growth of cyanobacteria in freshwater, estuarine, and coastal ecosystems due to increased anthropogenic eutrophic ation and global climate change has created serious concern toward harmful bloom formation an d surface water contamination all over the wor ld. In this study, by the application of growth-inhibition assays using different fish species, we assessed the toxicological potential of two cyano bacterial blooms e. g. Microcystisaeruginosa an d Nodulariaspumigenathat differed in total cyano bacterial biomass and species composition.Cyan otoxin (mainly microcystins, MCs, Nodularin) im pactsthe aquatic organisms and soil irrigated b y water containing these toxins.Direct or indirect methods contribute to cyanotoxin transfer throu gh the food chain, and thus constitute a potent h ealth risk source.The main objective of this work was to understand the eventualphytoto xicity of cyanotoxins (microcystins and Nodularin) as the major agricultural impacts induced bythe use of contaminated water for irrigation.Th e study confirms the harmfuleffects (ecologi cal, eco-physiological, socio-economical and sanitary risk) of dissolvedMCs and Nodularin on fish. MC and Nodularin accumulation in fish c ould pose a potential risk for human health, if the MCs intake exceeded therecommended tolerable limits. In general, these cited inves tigations references confirm the harmfuleffects (ecological, eco-physiological, socio-economical and sanitary risk) of dissolved MCs onagr icultural plants. Thus, cyanotoxinphytotoxicity highlights the need for the surveillance ofCyano HABand the monitoring of water irrigation quality as well as for drinking water. Our findings suggests that toxicological tests should constitute a key element in the routine monitoring of water bodiesso as to prevent under-over-estim ation of potential HAB risk for both ecosystem and public health.