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The impact of debris on marine life.
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A systematic review of 340 publications documented encounters between 693 marine species and debris, with 92% of interactions involving plastic and 17% involving microplastics. The review established marine debris — especially plastic — as a major, widespread threat to marine biodiversity through entanglement, ingestion, and habitat degradation.
Marine debris is listed among the major perceived threats to biodiversity, and is cause for particular concern due to its abundance, durability and persistence in the marine environment. An extensive literature search reviewed the current state of knowledge on the effects of marine debris on marine organisms. 340 original publications reported encounters between organisms and marine debris and 693 species. Plastic debris accounted for 92% of encounters between debris and individuals. Numerous direct and indirect consequences were recorded, with the potential for sublethal effects of ingestion an area of considerable uncertainty and concern. Comparison to the IUCN Red List highlighted that at least 17% of species affected by entanglement and ingestion were listed as threatened or near threatened. Hence where marine debris combines with other anthropogenic stressors it may affect populations, trophic interactions and assemblages.
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This review summarizes the types, sources, and impacts of plastic debris in marine environments, covering both macro- and microplastics and their effects on marine biodiversity. The paper also discusses global initiatives and policy frameworks aimed at reducing marine plastic pollution.
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Researchers reviewed global data on how marine wildlife is harmed by plastic debris, finding that the number of affected species doubled from 267 to 557 since 1997, with 100% of sea turtle species and two-thirds of marine mammal species now impacted through entanglement or ingestion of plastic. The dramatic increase across fish and invertebrates — groups previously overlooked — underscores the accelerating ecological damage of ocean plastic pollution.
Micro Plastics in The Marine Environment: A Review of Their Effects on Marine Organisms and Ecosystems
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This review examines the effects of microplastics on marine organisms and ecosystems, summarizing evidence for MP ingestion across trophic levels, physical and chemical harm to marine life, and the pathways through which marine MP pollution threatens biodiversity and fisheries.
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