A critical review of current research on Cyanobacterial cells and associated toxins in aquatic environments: occurrence, impact, and treatment methods

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113931 - 113931

Published: Aug. 26, 2024

Language: Английский

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Role of benthic overwintering cyanobacteria seed stock on estuarine bloom dynamics

Harmful Algae, Journal Year: 2025, Volume and Issue: 143, P. 102807 - 102807

Published: Feb. 6, 2025

Cyanobacteria blooms (cHABs) comprised of the potentially toxic cyanobacterium Microcystis, are increasing in waterbodies worldwide. CHABs estuaries often originate from upstream locations with longer hydraulic residence times (e.g., reservoirs, static channels). These also accumulate higher concentrations benthic overwintering cells that serve as inoculum for subsequent year's blooms. We investigated Microcystis seed stock hydrologically complex upper San Francisco Estuary known Sacramento-San Joaquin Delta (Delta). Quantitative polymerase chain reaction (qPCR) was used to quantify total sediments available inoculate summertime To study bloom origin and succession, DNA discrete water sediment samples PCR amplified using cyanobacteria-specific 16S-23S ITS rDNA primers. Results confirmed hypothesis peripheral areas have highest generally surface water. high genetic diversity population 36 unique genotypes detected column. This demonstrates should be considered when investigating dynamics across large estuarine systems.

Language: Английский

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Management of cyanobacteria and cyanotoxins in drinking water: A comprehensive review on occurrence, toxicity, challenges and treatment approaches

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 976, P. 179260 - 179260

Published: April 9, 2025

Language: Английский

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Succession of Particle‐Attached and Free‐Living Microbial Communities in Response to the Degradation of Algal Organic Matter in Lake Taihu, China

Environmental Microbiology Reports, Journal Year: 2025, Volume and Issue: 17(2)

Published: April 1, 2025

ABSTRACT Decomposition of Cyanobacterial blooms frequently occurs in Lake Taihu, releasing various fractions algal organic matter into the water through cell lysis. These influence production and consumption dissolved matter, nutrient dynamics, bacterial succession lake. However, interactions between free‐living particle‐attached communities with different remain poorly understood. Herein, we investigated effects two distinct fractions, obtained a fractionation procedure simulating cyanobacterial bloom collapse, on freshwater communities. The degradation both resulted stage‐specific changes chemical properties lake water, which were divided stages (labeled Stage I II). Flavobacteriaceae was dominant I, whereas Methylophilaceae dominated II. Long‐term ecological observations indicated that bacteria responded more sensitively to than bacteria. Compared algal‐derived filtrate, breakdown residual exudative led complex community network. findings provide new insights capacity utilize highlight their roles aquatic ecosystems during post‐bloom stage.

Language: Английский

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Spatial and temporal characterization of cyanobacteria blooms in the Mississippi Sound and their relationship to the Bonnet Carré Spillway openings

Harmful Algae, Journal Year: 2023, Volume and Issue: 127, P. 102472 - 102472

Published: June 13, 2023

During the spring and summer of 2019, an unprecedented cyanobacterial harmful algal bloom (cyanoHAB) was responsible for beach advisories on 25 beaches along Mississippi Sound over 3 months. Due to preceding heavy rainfall flooding within River watershed, first time in history, Bonnet Carré Spillway (BCS) opened twice one year during 2019. The coastal cyanoHAB coincided with second BCS opening. main objectives this study were: (1) investigate potential using National Aeronautics Space Administration (NASA) ocean color standard Cyanobacteria Index (CIcyano) algorithm characterize spatial temporal extent 2019 cyanoHAB; (2) couple CIcyano data river discharge, salinity, modeled-wind conditions leading factors aiding advection persistence Sound, including a possible relationship BCS; (3) further by repeating methods from 2018, which when but no evidence cyanoHABs reported coast. Weekly means monthly frequency images, February September 2018 were analyzed, coincide three openings. In March cyanobacteria observed Lake Pontchartrain coinciding opening; however, month-long contained lake. Two distinct both blooms advected into likely contributed 3-month-long water coastline. From mid-July salinity at stations consistently near zero indicating high levels freshwater. that time, winds predominantly northwestward, preventing waters flushing Shelf resulting remaining longer estuarine lakes Sound. Although had undeniable impact presence other variables wind direction, flow, mixing, freshwater can determine intensity cyanoHABs. Coupling situ phytoplankton information bodies marine continuum data, satellite imagery could help identify early stages forecast their trajectory impacts areas.

Language: Английский

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Characterizing the Impact of Cyanobacterial Blooms on the Photoreactivity of Surface Waters from New York Lakes: A Combined Statewide Survey and Laboratory Investigation

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(18), P. 8020 - 8031

Published: April 17, 2024

Cyanobacterial blooms introduce autochthonous dissolved organic matter (DOM) into aquatic environments, but their impact on surface water photoreactivity has not been investigated through collaborative field sampling with comparative laboratory assessments. In this work, we quantified the apparent quantum yields (Φapp,RI) of reactive intermediates (RIs), including excited triplet states (3DOM*), singlet oxygen (1O2), and hydroxyl radicals (•OH), for whole samples collected by citizen volunteers from more than 100 New York lakes. Multiple comparisons tests orthogonal partial least-squares analysis identified level cyanobacterial chlorophyll a as key factor in explaining enhanced sourced bloom-impacted Laboratory recultivation bloom bloom-free lake demonstrated that increases Φapp,RI during growth were likely driven production photoreactive moieties heterotrophic transformation freshly produced labile exudates. proliferation also altered energy distribution 3DOM* contributed to accelerated protriptyline, model micropollutant susceptible photosensitized reactions, under simulated sunlight conditions. Overall, our study provides insights relationship between waters limnological characteristics trophic state lakes highlights relevance abundance predicting waters.

Language: Английский

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Benthic cyanobacterial accumulations and associated cyanotoxins in coastal urban stormwater pond networks

Harmful Algae, Journal Year: 2025, Volume and Issue: 144, P. 102833 - 102833

Published: March 3, 2025

Language: Английский

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The potential for “Cyanobiogas” as a viable circular option in strategies for managing harmful and nuisance cyanobacterial blooms

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116101 - 116101

Published: March 1, 2025

Language: Английский

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Urgent Necessity for Algal Bloom Mitigation and Derived Resource Recycling

Water, Journal Year: 2025, Volume and Issue: 17(6), P. 853 - 853

Published: March 17, 2025

Water scarcity poses rigorous challenges to socio-economic development, necessitating more efficient options for water and resource management [...]

Language: Английский

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Diversity of the Summer Phytoplankton of 43 Waterbodies in Bulgaria and Its Potential for Water Quality Assessment

Diversity, Journal Year: 2023, Volume and Issue: 15(4), P. 472 - 472

Published: March 23, 2023

The general awareness of the threats on biodiversity and water quality raised number studies that use phytoplankton in assessment procedures. Since most metrics require obtaining mean values, this paper presents data may help speed up field work find indicators for a rapid based single samplings, allowing simultaneous many sites. from 43 Bulgarian waterbodies collected during three summer campaigns (2018, 2019, 2021) at sites selected after drone observations was studied by conventional light microscopy (LM) an HPLC analysis marker pigments. Our results allowed us to recommend drones application as reliable methods assessments. In total, 787 algae seven phyla (53 alien, new Bulgaria) were identified. Chlorophyta taxonomically richest group, but Cyanoprokaryota dominated biomass New PCR obtained anatoxin microcystin producers confirmed genetic diversity Cuspidothrix Microcystis provided species country’s toxic species, first identified LM. A statistical revealed significant correlations certain algal classes with different environmental variables, their are considered promising future search bioindicators. This is especially valid class Eustigmatophyceae, which, yet, has been almost neglected procedures indices.

Language: Английский

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