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61,005 resultsShowing papers similar to Temporal Dynamics of Microcystins In Two Reservoirs With Different Trophic Status During The Early Growth Stage of Cyanobacteria
ClearSpatiotemporal changes of bacterial communities during a cyanobacterial bloom in a subtropical water source reservoir ecosystem in China
Researchers used DNA sequencing to track how bacterial communities in a Chinese reservoir changed during different phases of a cyanobacterial (harmful algae) bloom, finding that bacterial diversity dropped significantly during the bloom outbreak and that the composition of communities shifted in distinct ways tied to nutrient levels and temperature. Understanding these microbial dynamics could help water managers predict and control harmful algal blooms that threaten drinking water quality.
Spatiotemporal changes of cyanobacterial and bacterial communities during an algal bloom in a subtropical water source reservoir ecosystem of China
Researchers used high-throughput 16S rRNA sequencing to investigate spatiotemporal variation in cyanobacterial and bacterial community diversity and composition across different phases of an algal bloom in a eutrophicated subtropical reservoir in China. Results showed temporal significance in community structure for both cyanobacteria and bacteria across bloom phases, with spatial variation also observed along upstream river inputs.
Spatiotemporal changes of cyanobacterial and heterotrophic bacterial communities during an algal bloom in a subtropical water source reservoir ecosystem of China
Researchers used high-throughput sequencing to track how cyanobacterial and heterotrophic bacterial communities in a Chinese reservoir changed spatially and temporally across distinct algal bloom phases. They found that algal bloom progression drove significant shifts in microbial diversity and community composition, with dominant taxa including Cyanobacteriales and genera such as Acinetobacter and Flavobacterium varying across bloom stages.
Ecological and human health risk assessments of cyanotoxins and heavy metals in a drinking water supply reservoir
Researchers assessed ecological and human health risks from cyanotoxins and heavy metals in the Tri An Reservoir in Vietnam, finding that while heavy metal risks were low, toxic cyanobacterial blooms producing microcystins posed a serious disease risk to both adults and children through ingestion and skin contact.
Microplastic and microcystin in tropical drinking water reservoir: pollution characteristics and human health risk assessment
Researchers surveyed microplastic and cyanobacterial toxin levels in a tropical drinking water reservoir in Vietnam over a one-year period. They found microplastics at all sampling sites, predominantly polypropylene and polyethylene fibers, with high polymer hazard scores despite low overall pollution levels. The co-occurrence of microplastics and microcystin toxins across the reservoir highlights the need for research on how these contaminants interact in freshwater drinking water sources.
Alteration of dominant cyanobacteria in different bloom periods caused by abiotic factors and species interactions
Researchers tracked cyanobacterial community dynamics in Lake Taihu over a bloom cycle and found that Planktothrix initially dominated at lower temperatures in nitrogen-rich conditions before being displaced by Microcystis as temperatures rose, with non-cyanobacterial prokaryote interactions also playing a key role in shaping which bloom-forming species prevails.
Fate, abundance and ecological risks of microcystins in aquatic environment: The implication of microplastics
This review explores how microplastics in water can interact with microcystins, highly toxic compounds produced by harmful algal blooms, by adsorbing and transporting them through aquatic environments. The combination poses increased risks to human health because microplastics can carry these dangerous toxins into drinking water sources and through the food chain.
Spatio-temporal variation of toxin-producing gene abundance in Microcystis aeruginosa from Poyang Lake
This paper is not relevant to microplastics; it investigates the spatio-temporal variation of toxin-producing gene abundance in the cyanobacterium Microcystis aeruginosa in Poyang Lake, China.
[RETRACTED] Short-term dynamics and growth parameters of cyanobacteria and microcystins in freshwater from the Sidi-Yacoub dam, North-east of Algeria
This retracted study monitored cyanobacteria and their toxin (microcystin) in an Algerian reservoir. Cyanobacterial blooms are environmentally important but this paper has been retracted and is not related to microplastic research.
Distribution and changes in microplastics in Taihu Lake and cyanobacterial blooms formed by the aggregation of Microcystis colonies
Researchers investigated microplastic distribution in the surface water and sediments of Taihu Lake, China, finding abundances of 0-3.7 items/L in surface water and 44.42-417.56 items/kg in sediments, and exploring relationships between microplastics, nutrient pollutants, and cyanobacterial bloom formation in this heavily eutrophic freshwater system.
Pollutant toxicology with respect to microalgae and cyanobacteria
This review examines the toxicological responses of microalgae and cyanobacteria to a wide range of pollutants, arguing that these organisms are valuable and sensitive indicators for aquatic ecotoxicological assessment.
(Eco)Toxicology of Cyanobacteria and Cyanotoxins: From Environmental Dynamics to Adverse Effects
This review examines the ecotoxicology of cyanobacteria and cyanotoxins, covering the environmental dynamics driving harmful bloom formation under eutrophication and climate change, and the adverse effects of cyanotoxins on aquatic organisms, wildlife, and human health.
Study on Water Quality and Trophic Status of Subtropical Cascade Reservoirs in Dongjiang River Basin in Dry Season
Researchers assessed the water quality and nutrient levels (trophic status) of three large reservoirs in China's Dongjiang River Basin during the dry season. These reservoirs supply drinking water to over 40 million people, making water quality monitoring — including for emerging contaminants like microplastics — essential for public health.
Microcystin bound on microplastics in eutrophic waters: A potential threat to zooplankton revealed by adsorption-desorption processes
Researchers studied adsorption and desorption of the cyanotoxin microcystin onto microplastics in eutrophic freshwater and found that microplastics can act as vectors carrying bound cyanotoxins to zooplankton, enhancing toxin transfer through the food web beyond what free toxin exposure alone would predict.
Effects of microcystin-LR on purification of drinking water source and physiological response of Hydrocharis dubia (Bl.) backer
Not relevant to microplastics research; this paper examines how the algal toxin microcystin-LR affects the ability of an aquatic plant (Hydrocharis dubia) to purify drinking water sources, with no connection to microplastic pollution.
Microplastic characteristics differentially influence cyanobacterial harmful algal bloom microbial community membership, growth, and toxin production
Researchers investigated how different types of microplastics influence the growth and toxin production of harmful algal blooms in freshwater. They found that certain microplastic characteristics, such as shape and polymer type, significantly affected which microbial species thrived and how much toxin was produced. The study suggests that microplastic pollution may play an underappreciated role in worsening harmful algal blooms in lakes and reservoirs.
Sorption of the common freshwater cyanotoxin microcystin to microplastics
Researchers demonstrated that microplastics from freshwater environments can adsorb the harmful algal bloom toxin microcystin onto their surfaces, potentially concentrating the toxin and altering its environmental fate. This finding suggests that microplastics in lakes with cyanobacterial blooms may act as carriers for toxins that affect fish, wildlife, and humans.
Adsorption of cyanotoxins on polypropylene and polyethylene terephthalate: Microplastics as vector of eight microcystin analogues
Eight microcystin analogues were tested for adsorption onto polypropylene and polyethylene terephthalate microplastics, finding that these common plastics can bind cyanotoxins from freshwater environments. The study identifies microplastics as potential vectors for cyanobacterial toxins in lakes and reservoirs, with implications for drinking water safety.
Responses of Microcystis aeruginosa to polystyrene microplastics: Growth dynamics and implications for water treatment
Researchers studied how polystyrene microplastics affect the harmful freshwater algae Microcystis aeruginosa, which causes toxic algal blooms. They found that while microplastics initially suppressed algae growth, the algae eventually adapted and grew even more, producing higher levels of the dangerous toxin microcystin. The study suggests that microplastic pollution in freshwater could worsen harmful algal blooms and create additional water treatment challenges.
Cyanobacterial relative enrichment over diatoms: Differential responses of plankton to microplastic pollution in the Zhanghe River, Northern China
Researchers assessed microplastic pollution and its ecological impacts on plankton communities in the Zhanghe River, China, finding that fibrous polyethylene, polypropylene, and polyamide MPs increased from upstream to downstream and were significantly associated with cyanobacterial proliferation while inhibiting diatoms, with a synergistic interaction with total phosphorus potentially amplifying eutrophication risk.
Size-dependent toxic effects of polystyrene microplastic exposure on Microcystis aeruginosa growth and microcystin production
Researchers exposed the freshwater cyanobacterium Microcystis aeruginosa to polystyrene microplastics of two sizes and found that particle size significantly influenced the effects. The larger 1-micrometer particles promoted algal growth while aggregating on cell surfaces and inhibiting photosynthesis, whereas 100-nanometer particles stimulated toxin production. The study suggests that microplastic pollution in freshwater may have complex, size-dependent effects on harmful algal blooms and their toxin output.
Nitrogen Forms Regulate the Response of Microcystis aeruginosa to Nanoplastics at Environmentally Relevant Nitrogen Concentrations
Researchers found that nanoplastics significantly inhibited the growth of a common blue-green algae species and increased its production of microcystin, a toxin harmful to humans. The type of nitrogen available in the water changed how severely the nanoplastics affected the algae, with nitrate conditions causing the worst growth inhibition. This matters because nanoplastic pollution could increase toxic algal blooms in lakes and reservoirs used for drinking water.
Analysis and differentiation of toxic and non-toxic cyanobacteria using Raman spectroscopy
This paper is not about microplastics. It used Raman spectroscopy to distinguish between toxic and non-toxic strains of cyanobacteria (blue-green algae) in water. While the detection technology overlaps with methods used for microplastic identification, this study focuses entirely on algal toxin monitoring with no connection to microplastic contamination.
Experimental Evidence from the Field that Naturally Weathered Microplastics Accumulate Cyanobacterial Toxins in Eutrophic Lakes
Researchers conducted laboratory sorption experiments and field sampling in eutrophic lakes to test whether naturally weathered microplastics accumulate cyanobacterial toxins (microcystins). Weathered microplastics from the field had significantly higher microcystin concentrations than predicted from lab sorption experiments with pristine plastics, confirming that naturally aged plastics are more effective toxin carriers.