We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Footprint of the plastisphere on freshwater zooplankton
Summary
Researchers studied zooplankton functional groups in a temperate floodplain lake and the Drava River in Croatia, examining how the 'plastisphere' (microplastics as substrate for microbial communities) compares with natural substrates as a food source. They found the plastisphere supported a less mature microbial community than epilithon and epixylon substrates, with zooplankton species diversity and biomass higher in the stable lake than in the river.
Changes in the functional groups of zooplankton were studied in autumn in a temperate floodplain lake (Lake Sakadaš, Kopački Rit Nature Park, Croatia) and in the Drava River (in the Croatian part of the river). Various abiotic parameters as well as available food sources (phytoplankton and microphytes (algae and cyanobacteria) developing on epixylon, epilithon and artificially introduced microplastics called "plastisphere") were also studied. The lake was hydrologically isolated from the main river during the study, while the water level of the Drava River fluctuated, resulting in larger variations in limnological parameters. Due to stable conditions in the lake, zooplankton abundance, biomass, and species richness were higher than in the Drava River. In both environments, zooplankton species feeding on bacteria, detrital suspensions, and small algae were most abundant, with predators and microfilter-feeders being more abundant in the lake. Microphytes were diverse and mostly small and medium-sized in phytoplankton and all substrate types. Stable lake conditions promoted higher abundance of the zooplankton group, which effectively uses larger algae as a food source. The lower abundance of zooplankton feeding on larger algae and predatory species in the river suggests that the epilithon and plastisphere community was a less mature community compared to the lake, and the heterotrophic component with ciliates and/or other small heterotrophs was not well developed. The importance of plastispheres was particularly evident under the turbid hydrologic conditions that prevailed in the river at the end of the study, when phytoplankton biomass decreased and zooplankton abundance steadily increased, suggesting that microphytes colonised on microplastics were an additional food source for higher trophic levels.
Sign in to start a discussion.
More Papers Like This
Responses of natural plastisphere community and zooplankton to microplastic pollution: a review on novel remediation strategies
This review examines how microbial communities colonize microplastic surfaces in aquatic environments, forming what scientists call the plastisphere, and how these plastic-associated microbes interact with zooplankton. Researchers found that microplastics serve as floating platforms for bacteria, including potentially harmful species, and can transfer these microbes up the food chain through zooplankton ingestion. The study highlights novel bioremediation strategies that harness natural microbial processes to help break down microplastic pollution.
Environmental Health Impact of Plastisphere
This review examines the growing body of research on plastisphere ecosystems in aquatic environments including rivers, lakes, and estuaries, discussing microbial community composition on plastic surfaces and the ecological consequences for freshwater biodiversity and function.
Microplastics in Aquatic Environments
This review summarizes the current state of microplastic research in aquatic environments, covering the plastisphere — the microbial community that colonizes plastic surfaces — and the ways microplastics interact with other aquatic organisms. The paper highlights microplastics as a growing ecological concern that affects food webs and ecosystem processes.
Ecological Roles and Shared Microbes Differentiate the Plastisphere from Natural Particle-Associated Microbiomes in Urban Rivers
Researchers compared the microbial communities living on microplastics versus natural particles in ten urban river systems. While the two communities shared many similarities, the microplastic-associated community, known as the plastisphere, harbored distinct bacteria with specialized abilities to break down complex carbon compounds. The study suggests that microplastics in rivers create unique microbial habitats that may influence nutrient cycling and pollutant degradation differently than natural particles.
Plastisphere as a unique metabolic hotspot in river water: Impact of plastic substrate biodegradability
A study of river water found that microplastic surfaces — even from tiny 100-micrometer particles — host distinct microbial communities called plastispheres that function as metabolic hotspots, with richer carbon and nitrogen cycling activity than the surrounding water. The biodegradability of the plastic substrate influenced which microbes colonized it and how they interacted, with biodegradable plastics supporting different communities than conventional plastics. This matters because plastisphere microbes can include potential pathogens and antibiotic-resistant bacteria, and they alter the ecological function of freshwater environments.