Sediment-driven plastisphere community assembly on plastic debris in tropical coastal and marine environments

Koh, Jeong-Rack; Bairoliya, Sakcham; Salta, Maria; Cho, Zin Thida; Fong, Jim C.; Neo, Mei Lin; Cragg, Simon M.; Cao, Bin

doi:10.1016/j.envint.2023.108153

Cited by 8 publications

(5 citation statements)

References 56 publications

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“…This suggests that the combined treatment might create niches favoring these groups or alter environmental conditions, potentially leading to new ecological dynamics within the fungal community [90]. This finding is supported by recent work by Koh, Bairoliya [91], which showed that the accumulation of MPs could lead to the establishment of "plastisphere" communities with unique compositions and ecological interactions.…”

Section: Regulatory Effects Of Micropollutants On Aquatic Fungal Comm...supporting

confidence: 61%

Dual Effect of Microplastics and Cadmium on Stream Litter Decomposition and Invertebrate Feeding Behavior

He,

Cai,

Chen

et al. 2024

Water

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This study investigates the combined effect of microplastics and cadmium on the decomposition of litter, the structure of fungal communities, and the feeding behavior of invertebrates in an aquatic ecosystem. Through a series of microcosm experiments, we demonstrate that exposure to MPs and Cd significantly reduced the decomposition of leaf litter. Notably, the cumulative impact of combined MP and Cd exposure was found to be greater than their individual effects. During this process, the carbon–nitrogen ratio of the litter increased, while dehydrogenase activity and fungal biomass were inhibited. Additionally, the relative abundance of Ascomycota and Basidiomycota fungi decreased, weakening their role in the decomposition of leaf litter. Conversely, MPs and Cd reduced the relative content of leaf litter lignin, improving its quality as food, thereby leading to an increase in the feeding rate of invertebrates. This dual effect indicates that micropollutants suppress the decomposition of litter by regulating microbial metabolic activity and fungal community structure but promote invertebrate feeding. Our findings provide crucial insights into the adverse effects of MPs and Cd on the structure and diversity of aquatic fungal communities, which could have long-term impacts on the food webs and nutrient cycling progress of aquatic ecosystems.

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Section: Regulatory Effects Of Micropollutants On Aquatic Fungal Comm...supporting

confidence: 61%

Dual Effect of Microplastics and Cadmium on Stream Litter Decomposition and Invertebrate Feeding Behavior

He,

Cai,

Chen

et al. 2024

Water

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show abstract

“…was not enriched in the marine plastisphere in the study of Koh et al, a seagrass pathogen of the genus Labyrinthula was enriched. This implies that the plastisphere can harbor pathogens that are not only harmful to animals but also plants [62]. * Relative to the surrounding environment or the free-living bacteria.…”

Section: Aquatic Environmentmentioning

confidence: 99%

Terrestrial and Aquatic Plastisphere: Formation, Characteristics, and Influencing Factors

Tang

2024

Sustainability

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The increasing number of plastic particles in the environment gives rise to a unique ecological niche called the plastisphere, which is characterized by a dynamic assemblage of microorganisms comprising autotrophs, heterotrophs, predators, and pathogens. This paper reviews the formation, characteristics, and factors influencing the terrestrial and aquatic plastisphere. The terrestrial and aquatic plastisphere forms when hitchhiking microorganisms, often bacteria, in the environment adhere to the surfaces of plastic particles and alter the surface properties of the particles for subsequent colonization of increasingly tightly clinging microorganisms. The terrestrial plastisphere is not as mobile as the aquatic plastisphere and is defined by the characteristics of the soil anchoring it. The microorganisms on the plastisphere are often defined by the dominant microorganisms in the surroundings, particularly those of the phyla Proteobacteria, Actinobacteria, Bacteroidota, Firmicutes, Chloroflexi, Acidobacteria, Cyanobacteria, Ascomycota, Basidiomycota, Chytridiomycota, Ciliophora, Ochrophyta, and Chlorophyta. However, the compositions and dominant microbial species on different plastic surfaces vary widely as they change with time, plastic properties, and biotic and abiotic environmental factors. Temporal changes in the plastisphere are due to succession. Plastic properties, particularly the type, surface properties, size, color, degree of aging, and chemical leaching, also affect the composition of the plastisphere. Biotic environmental factors comprising the dominant ambient microorganisms and interspecies interactions, together with the abiotic ones, including pH, temperature, nutrient availability, soil properties, salinity, and light, significantly shape the plastisphere. This review provides insight into the biodiversity of the plastisphere, and its roles in spreading pathogens and degrading plastics.

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“…Plastic litter pollution may become the most critical problem in the 21 st century (Koh et al, 2023;Landrigan et al, 2020). Plastic litter fragmentation and per-and polyfluoroalkyl substances (PFAS) in our ecosystems may add to global health disasters (Jones, 2015).…”

Section: Plastic Pollution Environmental Threatmentioning

confidence: 99%

“…The microscopic plastic fragments and molecules produced by the breakdown of plastic litter are now included in the hydrologic cycle (Allen et al, 2019;Jones, 2023;Simon, 2023). In the plastisphere (biologists recently identified the new sphere), there are thriving ecosystems living within the plastic trash in the garbage patch-ocean gyres, coastal waters, urban rivers, and other water bodies (Dussad et al, 2023;Eriksen et al, 2023;Koh et al, 2023;Xu et al, 2023). Plastic waste is so abundant that some scientists call this geological epoch the Plasticene (Campanale et al, 2020).…”

Section: Plastic Pollution Environmental Threatmentioning

confidence: 99%

GenZs environmental attitudes and ecology behavior nexus: Urgent education message

LeSage-Clements,

Sobolev,

Patton

2024

INTERDISCIP J ENV SCI ED

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Environmental education in schools is critical to help decrease plastic litter pollution because plastic pollution could be the most significant health problem of the 21st century. Our research examined the environmental behaviors and attitudes of Generation Z (Gen Z) high school and undergraduate students in South Texas, USA. The research was important because we need to understand what young people believe and value if we are going to see any change in environmental behavior. Results supported research on how teachers can influence student environmental attitudes, behaviors, and knowledge with education. Feedback from students revealed significant attitude change and a rich narrative of pollution and watershed ecology knowledge and behavior themes. These themes disclosed that a holistic environmental science curriculum is necessary to connect Earth systems with the plastic litter pollution cycle.

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Sediment-driven plastisphere community assembly on plastic debris in tropical coastal and marine environments

Cited by 8 publications

References 56 publications

Dual Effect of Microplastics and Cadmium on Stream Litter Decomposition and Invertebrate Feeding Behavior

Dual Effect of Microplastics and Cadmium on Stream Litter Decomposition and Invertebrate Feeding Behavior

Terrestrial and Aquatic Plastisphere: Formation, Characteristics, and Influencing Factors

GenZs environmental attitudes and ecology behavior nexus: Urgent education message

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