Managing the Taste and Odor Compound 2-MIB in a River-Reservoir System, South Korea DOI Open Access
Mi-Ri Kang, Deok-Woo Kim, Minji Park

et al.

Water, Journal Year: 2023, Volume and Issue: 15(23), P. 4107 - 4107

Published: Nov. 27, 2023

High concentrations of 2-methylisoborneol (2-MIB) were reported during winter in the Paldang reservoir and North Han River, South Korea. The causes unusual taste odor problems regulated river-reservoir system not understood; however, a short-term solution is to flush out 2-MIB-rich water secure sources for over 20 million people. Approximately 150 tons was released from upstream dams 12 days (late November early December 2018) reduce elevated levels 2-MIB. Simultaneously, spatio-temporal variations measured concentration sample 2-MIB five sites simulated using multi-dimensional hydrodynamics-based solute transport model monitor flushing effect. A modified environmental fluid dynamics code (EFDC) adopted as primary framework. Five scenarios on kinetic constants related characteristics behavior, such conservative, net decay, production, applied, results compared. We found that simulation errors elapsed times satisfy Korean drinking monitoring standard (≤20 ngL−1) smallest with conservative dye option, indicating physical biochemical may play an essential role.

Language: Английский

Blue revolution turning green? A global concern of cyanobacteria and cyanotoxins in freshwater aquaculture: A literature review DOI
Damjana Drobac, Nada Tokodi

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 360, P. 121115 - 121115

Published: May 14, 2024

Language: Английский

Citations

8
Health and Environmental Impacts of Cyanobacteria and Cyanotoxins from Freshwater to Seawater DOI Creative Commons

Tamara Villalobos,

Benjamín A. Suárez‐Isla,

Carlos Garcı́a

et al.

Toxins, Journal Year: 2025, Volume and Issue: 17(3), P. 126 - 126

Published: March 7, 2025

Cyanobacterial harmful algal blooms (cyanoHABs) are a natural phenomenon produced mainly by the interaction between and anthropogenic events. CyanoHABs characterized production of cyanotoxins that can have effects on different species within food web even affect human health. Among most prevalent toxin groups worldwide microcystins (MCs), anatoxins (ATXs), cylindrospermopsins (CYNs) nodularins (NODs), which as toxins with hepatotoxic, neurotoxic, cytotoxic effects. This review summarizes analyzes research influence cyanoHABs, main toxin-producing cyanobacteria in freshwater marine bodies, highlighting their global occurrence, toxicology, bioaccumulation dynamics vectors web, cases acute chronic intoxications humans. is useful for understanding cyanoHABs’ ecosystem impact health, how implementation surveillance management framework could generate vital information stakeholders to establish health guidelines risks hazards cyanoHABs

Language: Английский

Citations

1
Management of cyanobacteria and cyanotoxins in drinking water: A comprehensive review on occurrence, toxicity, challenges and treatment approaches DOI
N.P. Sahu, Atul V. Maldhure, Pawan Labhasetwar

et al.

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

Published: April 9, 2025

Language: Английский

Citations

1
Monitoring of toxic cyanobacterial blooms in Lalla Takerkoust reservoir by satellite imagery and microcystin transfer to surrounding farms DOI Creative Commons
Richard Mugani, Fatima El Khalloufi, Minoru Kasada

et al.

Harmful Algae, Journal Year: 2024, Volume and Issue: 135, P. 102631 - 102631

Published: April 27, 2024

Cyanobacterial harmful algal blooms (CyanoHABs) threaten public health and freshwater ecosystems worldwide. In this study, our main goal was to explore the dynamics of cyanobacterial how microcystins (MCs) move from Lalla Takerkoust reservoir nearby farms. We used Landsat imagery, molecular analysis, collecting analyzing physicochemical data, assessing toxins using HPLC. Our investigation identified two species responsible for blooms: Microcystis sp. Synechococcus strain produced three MC variants (MC-RR, MC-YR, MC-LR), with MC-RR exhibiting highest concentrations in dissolved intracellular toxins. contrast, did not produce any detectable To validate Normalized Difference Vegetation Index (NDVI) results, we utilized limnological including cell counts, quantified MCs freeze-dried bloom samples collected reservoir. study revealed patterns trends proliferation over 30 years presented a historical map area infestation NDVI method. The found that MC-LR accumulates near water surface due buoyancy Microcystis. maximum concentration 160 µgL−1. 4 km downstream reservoir, decreased by factor 5.39 29.63 µgL−1, indicating decrease increasing distance source. Similarly, MC-YR 2.98 same distance. Interestingly, distribution varied depth, dominating at outlet depth 10 m. findings highlight impact nutrient concentrations, environmental factors, transfer processes on distribution. emphasize need effective management strategies minimize toxin ensure safety.

Language: Английский

Citations

5
Summer heatwaves promote harmful algal blooms in the Fuchunjiang Reservoir, an important drinking water source DOI
Shiwen He, Yunlin Zhang, Na Li

et al.

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 359, P. 121056 - 121056

Published: May 1, 2024

Language: Английский

Citations

4
Occasional algal blooms in Lake Qionghai (Sichuan), a mesotrophic lake: Remote sensing extraction and preliminary investigation of their causes DOI Open Access
Shiwen He, Yunlin Zhang, Li Na

et al.

Journal of Lake Sciences, Journal Year: 2025, Volume and Issue: 37(2), P. 389 - 400

Published: Jan. 1, 2025

Language: Английский

Citations

0
Spatiotemporal dynamics of 2-methylisoborneol produced by filamentous cyanobacteria and associated driving factors in Lake Taihu, China DOI
Donghao Wu, M Chen,

Aichun Shen

et al.

Harmful Algae, Journal Year: 2024, Volume and Issue: 138, P. 102703 - 102703

Published: July 31, 2024

Language: Английский

Citations

3
Taxonomic and functional metagenomic assessment of a dolichospermum bloom in a large and deep lake south of the Alps DOI Creative Commons
Nico Salmaso, Leonardo Cerasino, Massimo Pindo

et al.

FEMS Microbiology Ecology, Journal Year: 2024, Volume and Issue: 100(10)

Published: Sept. 3, 2024

Abstract Untargeted genetic approaches can be used to explore the high metabolic versatility of cyanobacteria. In this context, a comprehensive metagenomic shotgun analysis was performed on population Dolichospermum lemmermannii collected during surface bloom in Lake Garda summer 2020. Using phylogenomic approach, almost complete metagenome-assembled genome obtained from allowed clarify taxonomic position species within genus and contributed frame taxonomy ADA group (Anabaena/Dolichospermum/Aphanizomenon). addition common functional traits represented central metabolism photosynthetic cyanobacteria, annotation uncovered some distinctive adaptive that helped define factors promote maintain bloom-forming heterocytous nitrogen-fixing Nostocales oligotrophic lakes. addition, clusters were identified potentially encode several secondary metabolites previously unknown populations evolving southern Alpine district. These included geosmin, anabaenopetins, other bioactive compounds. The results expanded knowledge competitive drive algal blooms provided guidance for more targeted analyses cyanobacterial with implications human health water resource use.

Language: Английский

Citations

3
Cyanotoxin Analysis of Air Samples from the Great Salt Lake DOI Creative Commons
James S. Metcalf, Sandra Anne Banack, Paul Alan Cox

et al.

Toxins, Journal Year: 2023, Volume and Issue: 15(11), P. 659 - 659

Published: Nov. 15, 2023

The Great Salt Lake in Utah is the largest saline lake Western hemisphere and one of terminal lakes world. Situated at eastern edge Basin, it a remnant freshwater Bonneville whose water level precipitously lowered about 12,000 years ago due to natural break Red Rock pass north. It contains diverse assemblage cyanobacteria which vary spatially dependent on salinity. In 1984, waters occupied 8500 km2. Nearly four decades later, occupy 2500 km2—a reduction surface area 71%. With predominantly westerly winds, there potential for adjacent metropolitan residents east be exposed airborne cyanobacteria- cyanotoxin-containing dust. During summer fall months 2022, air dried sediment samples were collected assessed presence BMAA has been identified as risk factor ALS. Collection equivalent person breathing 1 h resulted isomers being found some samples, along with their lakebed samples. There was no clear relationship between these toxins suggesting that may originate from diffuse rather than point sources. These findings confirm continued low levels constitute an increasing health hazard 2.5 million inhabitants communities Wasatch Front.

Language: Английский

Citations

7
qPCR-Based Monitoring of 2-Methylisoborneol/Geosmin-Producing Cyanobacteria in Drinking Water Reservoirs in South Korea DOI Creative Commons
Jung Eun Lee, Rumi Park,

Mi-Na Yu

et al.

Microorganisms, Journal Year: 2023, Volume and Issue: 11(9), P. 2332 - 2332

Published: Sept. 16, 2023

Cyanobacteria can exist in water resources and produce odorants. 2-Methylisoborneol (2-MIB) geosmin are the main odorant compounds affecting drinking quality reservoirs. In this study, encoding genes 2-MIB (mic, monoterpene cyclase) (geo, putative synthase) were investigated using newly developed primers for quantitative PCR (qPCR). Gene copy numbers compared to 2-MIB/geosmin concentrations cyanobacterial cell abundance. Samples collected between July October 2020, from four sites South Korea. The results showed similar trends three parameters, although changes followed mic/geo more closely than abundances. number of gene copies decreased upstream downstream. Regression analysis revealed a strong positive linear correlation concentration mic (R2 = 0.8478) geo 0.601). several environmental only temperature was positively correlated with both geo. Our demonstrated feasibility monitoring occurrence qPCR their respective synthase genes. Odorant-producing, gene-based studies may contribute improving management.

Language: Английский

Citations

5