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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Gut & Microbiome Human Health Effects Marine & Wildlife Policy & Risk Sign in to save

Microplastic Contamination and Ecological Status of Freshwater Ecosystems: A Case Study in Two Northern Portuguese Rivers

International Journal of Environmental Research and Public Health 2022 12 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Carolina Rodrigues, Carolina Rodrigues, Andreia Ribeiro, Andreia Ribeiro, Carlos Gravato Natividade Vieira, Carlos Gravato Carolina Rodrigues, Carlos Gravato João Filipe Soares Cardoso, Carlos Gravato Carlos A. Ribeiro, Natividade Vieira, Natividade Vieira, Carlos A. Ribeiro, Carlos Gravato Carlos Gravato Natividade Vieira, Carlos Gravato Carlos Gravato Carlos Gravato Carlos Gravato Carlos Gravato Carlos Gravato Carolina Rodrigues, Natividade Vieira, Carlos A. Ribeiro, Carlos Gravato Carlos A. Ribeiro, Natividade Vieira, Carlos Gravato Carlos Gravato Carlos Gravato Carlos Gravato Carlos Gravato Carlos Gravato Carlos Gravato Carlos Gravato Carlos Gravato

Summary

Microplastic contamination was assessed in sediments and Oligochaeta gut contents across two rivers with different ecological status scores, finding that urbanization rather than ecological status was the primary driver of sediment microplastic abundance. The results indicate that ecological quality indices alone are insufficient for tracking microplastic pollution in freshwater systems.

Study Type Environmental

Thus, sites with higher ecological status do not necessarily have lower abundance of MPs. In the sediments, urbanization seems to be the main driver for MP contamination. MP contamination is pervasive across the sediments and Oligochaeta's gut in both rivers. Since MPs have the potential to cause harm to environmental and human health, it is essential to monitor not only the ecological status of freshwaters, but also emerging pollutants such as MPs.

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