Department of Animal Biology and Conservation Science, University of Ghana, P.O. Box LG 67, Legon, Accra, Ghana.
Department of Marine and Fisheries Sciences, University of Ghana, P. O. Box LG, 99, Accra, Ghana.
Environ Sci Pollut Res Int. 2023 Aug;30(40):92371-92378. doi: 10.1007/s11356-023-28897-9. Epub 2023 Jul 25.
Baseline data on plastic landing by fishers and monitoring of this is important in evaluating the success of plastic waste management efforts. This study investigated plastic and fish landed by beach seine fishers in Ghana together with the rate of plastic deposition on an adjoining beach. Plastic constituted 31.6% of the total catch and 41.7% of the fish landed by weight. There were significant differences between the average weight of fish (139.58 ± 53.6 kg) and plastic (65.73 ± 14.6 kg) landed per fishing session and the catch per unit effort of fish (183.4 ± 76.7 kg/day) and plastic (88.4 ± 35.2 kg/day). The mean weight of plastic landed per fishing session was higher than the mean weight of each of the 26 species of fisheries. The rate of plastic deposition on the beach was 8.1 ± 2.5 plastic items per m per tidal cycle or 0.35 ± 0.11 kg plastic per m per tidal cycle with food packs and tableware dominating the deposited plastic. The results suggested ongoing water sachets and plastic bottle recycling in Ghana are yielding results and calls for targeted efforts in plastic food packs and tableware management.
基线数据显示，渔民们在陆地上丢弃的塑料垃圾，对评估塑料废物管理工作的成效具有重要意义。本研究调查了加纳海滩刺网渔民捕捞的鱼类和塑料垃圾的数量，以及毗邻海滩上塑料垃圾的沉积率。塑料垃圾占总渔获物的 31.6%，按重量计算占上岸鱼类的 41.7%。每次捕捞的鱼类（平均 139.58 ± 53.6 千克）和塑料（平均 65.73 ± 14.6 千克）的平均重量，以及鱼类（每单位捕捞努力量 183.4 ± 76.7 千克/天）和塑料（每单位捕捞努力量 88.4 ± 35.2 千克/天）的渔获量存在显著差异。每次捕捞的塑料垃圾平均重量高于 26 种渔业物种中每种鱼类的平均重量。海滩上的塑料垃圾沉积率为每潮汐周期每米 8.1 ± 2.5 个塑料垃圾，或每潮汐周期每平方米 0.35 ± 0.11 千克塑料垃圾，其中食品包装和餐具是主要的沉积塑料垃圾。研究结果表明，加纳正在进行的水袋和塑料瓶回收工作取得了成效，需要有针对性地加强对塑料食品包装和餐具的管理。
