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Anthropogenically impacted lake catchments in Denmark reveal low microplastic pollution

Environmental Science and Pollution Research 2022 22 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Emilie Kallenbach, Emilie Kallenbach, Emilie Kallenbach, Emilie Kallenbach, Emilie Kallenbach, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Emilie Kallenbach, Nikolai Friberg, Rachel Hurley, Rachel Hurley, Amy Lusher Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Amy Lusher Rachel Hurley, Amy Lusher Amy Lusher Rachel Hurley, Rachel Hurley, Amy Lusher Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Amy Lusher Rachel Hurley, Rachel Hurley, Amy Lusher Rachel Hurley, Nikolai Friberg, Nikolai Friberg, Rachel Hurley, Rachel Hurley, Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Dean Jacobsen, Dean Jacobsen, Amy Lusher Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Rachel Hurley, Amy Lusher Amy Lusher Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Nikolai Friberg, Amy Lusher Amy Lusher Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Rachel Hurley, Emilie Kallenbach, Rachel Hurley, Emilie Kallenbach, Amy Lusher Rachel Hurley, Amy Lusher Amy Lusher Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Rachel Hurley, Amy Lusher Rachel Hurley, Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Rachel Hurley, Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Rachel Hurley, Amy Lusher Amy Lusher Amy Lusher Amy Lusher Rachel Hurley, Nikolai Friberg, Amy Lusher

Summary

Researchers found surprisingly low microplastic concentrations in sediments and zebra mussels from five Danish freshwater lakes in agricultural catchments, with sediment averages of 0.028 items/g dry weight, suggesting these lake systems may be less contaminated than expected despite intensive surrounding land use.

Models

Invertebrate other

Study Type Environmental

Microplastics have been detected in lake environments globally, including in remote regions. Agricultural and populated areas are known to congregate several inputs and release pathways for microplastic. This study investigated microplastic (50-5000 µm) contamination in five Danish freshwater lakes with catchments dominated by arable land use. The concentrations in sediments (n = 3/site) and the zebra mussel, Dreissena polymorpha (n = 30/site), were calculated and compared with catchment characteristics and environmental parameters. Microplastic concentrations in sediment were relatively low (average 0.028 ± 0.017 items/g dry weight sediment) whilst only a single microplastic was found in the mussels (average 0.067 ± 0.249 items/10 individual). Hence, no relationship between the number of observed microplastics in sediment and mussels could be identified, nor could a relationship between concentration in sediment and environmental parameters. As all lakes studied received their water from moderate to heavily anthropogenically impacted catchments, it was expected that they would be sinks for microplastic with high bioavailability. Based on the results of the present study, D. polymorpha were found to not be contaminated by microplastics in the five study lakes. Thus, our results suggest that these mussels do not interact with microplastics at low concentrations. We speculate that the results on sediment and biota could be explained by several factors related to regional differences in plastic use, species characteristics, sampling size, and the fact that finding no microplastic is not always reported in the scientific literature. Thus, the paper provides insight into the dynamics between the catchment, lake, and biota in systems with low microplastic concentration.

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