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Research progress on the interaction between climate change and marine microplastic pollution
Summary
This review examines the two-way relationship between climate change and marine microplastic pollution, finding that rising ocean temperatures, acidification, and hypoxia can accelerate plastic fragmentation and alter how microplastics are distributed and ingested by marine life. Conversely, microplastics may affect carbon cycling and plankton productivity in ways that feed back into climate dynamics. The findings highlight that microplastic risks cannot be assessed in isolation from the broader context of a changing ocean.
Climate change and marine microplastic pollution have emerged as prominent global issues, coexisting concurrently for an extended period. However, based on experimental results and environmental monitoring data reported in the literature, studies on climate change and marine MP pollution are mostly independent of each other, lacking a clear understanding of their interactions. Our review synthesized the current state of global climate change and marine microplastic pollution, summarizing alterations in marine habitats under climate change, particularly the reciprocal impacts between factors such as ocean warming, acidification, hypoxia, and marine microplastic pollution. We discovered that climate change exacerbated marine microplastic pollution, changing the behavior of microplastics in the marine environment. Concurrently, marine microplastic pollution also influenced climate change, intensifying global warming, ocean acidification, and hypoxia. Hence, these two phenomena are intricately interconnected, yet there is currently a lack of research on the marine microplastic pollution characteristics and biotoxic effects in diverse marine habitat conditions. Our review looked forward to future research directions and prospects, in order to provide an important theoretical basis for effectively responding to global climate change and marine microplastic pollution.
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