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Environmental Dynamics of Microplastics in Aquatic Ecosystems
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As global demand for fish and seafood grows, so does plastic pollution in our oceans, and this review pulls together research on tiny plastic particles called microplastics found in water and aquatic animals. These particles can build up in fish organs and potentially end up on our plates, which matters since seafood is a major protein source worldwide. More research is needed to fully understand the health risks, but reducing plastic waste could help protect both marine life and the food we eat.
Introduction It is estimated that per capita consumption of aquatic animal foods will reach 21.8 kg by 2034, up from 21.1 kg in 2022-2024 in world showing the ever-increasing demand of fish product as the primary protein source. The global fisheries and aquaculture product rose to 193 Mt in the year 2024 (Blanchard and Novaglio, 2024) and Asia is expected to account for 73% share by 2034. World trade of the fish and all aquatic products for human consumption is projected to be 7.1% higher by the year 2034. These products are highly-traded but often through multi-stage value chains that makes it potentially sensitive to the impacts of escalating global trade tensions. The benefits of plastics in terms of economy, efficiency, and substitutability have grown increasingly with the advancement of industrial technology which has revolutionised human existence (Yu et al., 2022). The global output of plastic has increased in alarming rate after the COVID-19 pandemic in 2020. The term "microplastic" refers to plastic particles smaller than 5 mm and research indicates that these small particles with strong hydrophobicity can persist in the environment for a long time (Pandey et al., 2023). The microplastic is differentiated on the basis of different properties, such as crystallinity, functional groups, stability, and surface polarity. Microplastics are often categorized primary (such as micro-beads), and secondary (such as synthetic fibres) (Zeng, 2018). Study reported that almost 4.8 -12.7 million Mt’s of untreated plastic waste enters the oceans annually. Concentration of these microparticles varies from 10 to 1000 μm in the environment and these particles have the ability to enter internal organs to cause systemic malfunctioning. These particles can reach the surrounding environment from either direct or indirect sources and affects the biotic components in the aquatic ecosystems.
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Environmental Dynamics of Microplastics in Aquatic Ecosystems
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This review paper summarizes existing research on tiny plastic bits, called microplastics, building up in oceans and rivers as global plastic use and fish consumption both keep rising. These particles can enter the bodies of fish and other aquatic life, potentially disrupting their organs, which matters since fish are a major food source for people worldwide. The paper highlights growing concern but does not claim direct proof of harm to humans yet.
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Tiny plastic bits called microplastics are showing up throughout our oceans, and this review pulls together existing research showing they're building up in fish and other sea life. Since we eat seafood, these plastics can move up the food chain and into our bodies, raising concerns about long-term health effects that scientists are still working to understand. The researchers stress that we need more studies and stronger action to cut plastic pollution before it causes bigger problems for both marine life and the people who depend on seafood for food.
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This review synthesizes research on how microplastics affect aquatic ecosystems, covering ingestion by marine animals, trophic transfer up the food chain, and the chemicals that microplastics carry. The findings highlight that microplastic contamination is now widespread enough to threaten marine biodiversity and food security for populations that rely on seafood.
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This review summarizes the current state of microplastic pollution across freshwater and marine ecosystems worldwide. Researchers found that microplastics are now virtually everywhere in aquatic environments, entering food chains through ingestion by organisms ranging from tiny invertebrates to large fish. The study highlights that microplastics also act as carriers for toxic chemicals, compounding their potential harm to wildlife and, ultimately, to people who consume seafood.
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