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Microplastics increase soil respiration rate, decrease soil mesofauna feeding activity and change enchytraeid body length distribution in three contrasting soils
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Microplastics in agricultural soils: Impacts on soil microbial communities, nutrient cycling, earthworm health, and soil ecosystem functions
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This review pulls together existing research showing that tiny plastic bits building up in farm soil, from sources like plastic mulch and sewage sludge, are harming the soil itself, disrupting the microbes and earthworms that keep it healthy and fertile. This matters because damaged soil means reduced crop growth and food security over time, and these same microplastics can carry harmful chemicals and heavy metals that may end up in our food, water, and air. The researchers stress that without action to reduce plastic pollution now, the damage to farmland could become permanent.
Feedback, synergy and antagonism between microplastics and soil organisms
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Microplastics, tiny plastic fragments from industrial waste and vehicle exhaust, are building up in soil, and this review pulls together research on how they disrupt soil life, from bacteria to earthworms to crop plants like wheat and tomatoes. The effects are a mixed bag: some microbes actually thrive, while earthworms can suffer toxic effects and plants may absorb harmful chemicals through their roots. This matters because these plastics can accumulate over time and potentially move up the food chain into the foods we eat, though scientists say more research is needed to fully understand the risks.
Microplastic in Soil Ecosystem: Transition and Ecological Impacts
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This review examined how microplastics transition through soil ecosystems, alter soil structure, affect microbial communities, and impact plant health and agricultural productivity. Soil microplastic contamination is a growing threat to food security because it degrades the biological systems that underpin crop growth while simultaneously introducing chemical additives into the root zone where they can be taken up by edible plants.
Meta-analysis reveals differential impacts of microplastics on soil biota
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Soil microplastic contamination ranged from 0.34 to over 410,000 items/kg across sites, and their presence significantly increased mortality rates and decreased individual numbers, diversity, and reproduction of soil organisms, though biomass was unaffected due to opposing effects on different organism groups.
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