Effects of aging microplastics on surface microbial community structure
The colonization of microorganisms on the surface of microplastics and the formation of biofilms are hot issues in recent years.However,the effects of aging microplastics on microbial community structure and biofilm formation are rarely reported.The microplastics entering the environment are prone to aging and change their surface properties,such as increasing specific surface area,reducing hydrophobicity,and introducing oxygen-containing groups.Compared with the original microplastics,the surface of the aged microplastics adhered more microorganisms,and the decrease in hydrophobicity made the microorganisms easier to adhere.The richness and evenness of microorganisms on the surface of microplastics are different from the surrounding environment,which also indicates that microplastics may serve as a new niche.The surface biomass of microplastics increased with the increase of colonization time,and the dominant bacte-ria colonized on the surface of microplastics during aging also changed with time.Compared with the origi-nal microplastics,aging microplastics may attract certain bacteria to colonize on the surface of aging mi-croplastics due to the exudation of additives.By reviewing previous studies,the characteristics of microbial colonization were summarized to provide reference for related research and reduce the possibility of eco-logical risks caused by aging microplastics.
万方数据
维普
