Cyanobacteria Harmful Algae Blooms: Causes, Impacts, and Risk Management

Water Air & Soil Pollution, Год журнала: 2024, Номер 235(1)

Опубликована: Янв. 1, 2024

Abstract Cyanobacteria harmful algal blooms (cHABs) are increasingly becoming an emerging threat to aquatic life, ecotourism, and certain real estate investments. Their spontaneous yet sporadic occurrence has made mitigation measures a cumbersome task; moreover, current trends regarding anthropogenic activities, especially in agriculture industry portend further undesirable events. Apart from the aesthetic degeneration they create their respective habitats, equally capable of secreting toxins, which altogether present grave environmental medical consequences. In this paper, we gave update on factors that influence cHABs, cyanotoxin exposure routes, public health implications, impacts fish, pets, livestock. We discussed social economic impacts, risk assessment, management problems for cHABs and, thereafter, assessed extant approaches including prevention, control, proliferation cyanobacterial blooms. light this, suggest more intensified research should be directed standardization procedures analysis. Also, provision standardized reference material quantification cyanotoxins is vital routine monitoring as well development strong situ sensors quantifying detecting HABs cells toxins waterbodies prevent adverse cHABs. investigations into natural environmentally friendly approach cyanobacteria necessary appropriate deployment artificial intelligence required. Finally, wish redirect focus authorities protecting drinking water supply sources, products, food sources contamination implement proper treatment protect citizens potential threat.

Язык: Английский

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Nontraditional biomanipulation: A powerful ecotechnology to combat cyanobacterial blooms in eutrophic freshwaters

The Innovation Life, Год журнала: 2023, Номер 1(3), С. 100038 - 100038

Опубликована: Янв. 1, 2023

<p>Cyanobacterial blooms, occurring frequently in eutrophic freshwaters worldwide, are considered as potential hazards to ecosystems and human health, it is often difficult expensive control their outbreaks large lakes through reduction of nutrient loadings. Biomanipulation, launched an ecology-based solution the 1970s, was once believed be effective way counteract cyanobacterial blooms. It divided into traditional biomanipulation (TB) nontraditional (NTB) that use filter-feeding <i>Daphnia</i> fish, respectively. There have been numerous reviews on former, yet few latter. Here, we first revisit debate digestibility cyanobacteria silver bighead carp. Then, review 42 experiments clearly mention changes reveal substantial reductions abundance by carp 88% cases. In particular, a whole-lake experiment Lake Donghu, increased stock effectively decreased <i>Microcystis</i> blooms from coverage 87% 2021 0% 2022. Finally, discuss possible factors related NTB��s effectiveness depends not only standing stock, niche divergence shape preference fish but also trophic status waterbodies. Particularly, feed more colony-forming than filamentous cyanobacteria, capable increasing small-sized algae. NTB can used prevent or diminish poorly grazed <i>Daphnia</i>, providing sustainable in-lake ecotechnology combat heavy waterbodies.</p>

Язык: Английский

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Negative impacts of microcystin-LR and glyphosate on zebrafish intestine: Linked with gut microbiota and microRNAs?

Environmental Pollution, Год журнала: 2021, Номер 286, С. 117685 - 117685

Опубликована: Июль 1, 2021

Язык: Английский

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Hormetic dose responses induced by antibiotics in bacteria: A phantom menace to be thoroughly evaluated to address the environmental risk and tackle the antibiotic resistance phenomenon

The Science of The Total Environment, Год журнала: 2021, Номер 798, С. 149255 - 149255

Опубликована: Июль 27, 2021

Язык: Английский

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Microcystis colony formation: Extracellular polymeric substance, associated microorganisms, and its application

Bioresource Technology, Год журнала: 2022, Номер 360, С. 127610 - 127610

Опубликована: Июль 15, 2022

Язык: Английский

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Understanding the Risks of Diffusion of Cyanobacteria Toxins in Rivers, Lakes, and Potable Water

Toxins, Год журнала: 2023, Номер 15(9), С. 582 - 582

Опубликована: Сен. 20, 2023

Blue-green algae, or cyanobacteria, may be prevalent in our rivers and tap water. These minuscule bacteria can grow swiftly form blooms warm, nutrient-rich Toxins produced by cyanobacteria pollute streams harm the liver nervous system humans. This review highlights properties of 25 toxin types 12 different genera. The also covered strategies for reducing controlling issues. include using physical chemical treatments, cutting back on fertilizer input, algal lawn scrubbers, antagonistic microorganisms biocontrol. Micro-, nano- ultrafiltration techniques could used removal internal extracellular cyanotoxins, addition to powdered granular activated carbon, ozonation, sedimentation, ultraviolet radiation, potassium permanganate, free chlorine, pre-treatment oxidation techniques. efficiency treatment removing intracellular cyanotoxins is demonstrated. approaches aim lessen risks cyanobacterial associated toxins. Effective management water systems depends early detection quick action. Cyanobacteria cells their toxins detected microscopy, molecular methods, chromatography, spectroscopy. Understanding causes many ways elimination will help this crucial environmental issue.

Язык: Английский

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Cyanotoxins, biosynthetic gene clusters, and factors modulating cyanotoxin biosynthesis

World Journal of Microbiology and Biotechnology, Год журнала: 2023, Номер 39(9)

Опубликована: Июль 3, 2023

Язык: Английский

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Effects of acute exposure to microcystins on hypothalamic-pituitary-adrenal (HPA), -gonad (HPG) and -thyroid (HPT) axes of female rats

The Science of The Total Environment, Год журнала: 2021, Номер 778, С. 145196 - 145196

Опубликована: Фев. 10, 2021

Язык: Английский

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Immobilization of Microbes for Biodegradation of Microcystins: A Mini Review

Toxins, Год журнала: 2022, Номер 14(8), С. 573 - 573

Опубликована: Авг. 22, 2022

Harmful cyanobacterial blooms (HCBs) frequently occur in eutrophic freshwater ecosystems worldwide. Microcystins (MCs) are considered to be the most prominent and toxic metabolites during HCBs. MCs may harmful human animal health through drinking water recreational water. Biodegradation is eco-friendly, cost-effective one of effective methods remove MCs. Many novel MC-degrading bacteria their potential for degradation have been documented. However, it a challenge apply free bacterial cells natural environments due long-term operational instability difficult recycling. Immobilization process restricting mobility using carriers, which has several advantages as biocatalysts compared cells. Biological treatment systems with microbial immobilization technology can potentially utilized treat MC-polluted wastewater. In this review article, various types supporting materials application MCs-contaminated discussed. This article further broaden bioremediation environments.

Язык: Английский

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Meta-analysis reveals cyanotoxins risk across African inland waters

Journal of Hazardous Materials, Год журнала: 2023, Номер 451, С. 131160 - 131160

Опубликована: Март 5, 2023

Global eutrophication and climate warming exacerbate production of cyanotoxins such as microcystins (MCs), presenting risks to human animal health. Africa is a continent suffering from severe environmental crises, including MC intoxication, but with very limited understanding the occurrence extent MCs. By analysing 90 publications 1989 2019, we found that in various water bodies where MCs have been detected so far, concentrations were 1.4-2803 times higher than WHO provisional guideline for lifetime exposure via drinking (1 µg/L) 12 15 African countries data available. relatively high Republic South (averaged 2803 μg/L) Southern whole (702 when compared other regions. Values reservoirs (958 lakes (159 types, much temperate (1381 arid (161 tropical (4 zones. Highly significant positive relationships between planktonic chlorophyll a. Further assessment revealed ecological risk 14 56 bodies, half used sources. Recognizing extremely Africa, recommend routine monitoring be prioritized ensure safe use sustainability this region.

Язык: Английский

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