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The environmental impacts of pelagic fish caught by Scottish vessels
Fisheries Research ( IF 2.4 ) Pub Date : 2020-12-23 , DOI: 10.1016/j.fishres.2020.105850
Frances Sandison , Jon Hillier , Astley Hastings , Paul Macdonald , Beth Mouat , C. Tara Marshall

Food production is estimated to emit between 20–30 % of global anthropogenic carbon emissions. The need to achieve net zero emissions requires a transition to low carbon, sustainable food sources. Of the total greenhouse gas (GHG) emissions for food production, only 4 % are attributed to wild capture fisheries. However, within seafood GHG studies a wide range of estimates can be found across different species, fishing methods and regions. This study assesses the environmental impact of fish capture, including the carbon footprint (CF), by the Scottish pelagic fleet, a highly modernised fleet targeting herring, mackerel and blue whiting in the North Sea and Atlantic Ocean. A life cycle assessment (LCA) was undertaken to provide a standardised comparison of pelagic fish with other seafood studies. One kg of whole round fish caught by the Scottish pelagic trawl fleet had a CF of 0.452 kg CO2 eq. Fuel burned during fishing operations was the largest contributing factor, accounting for approximately 96% of a CF. This figure was consistent with the expected results for a fishery for small pelagics, which are typically under 1 kg CO2 eq. per kg of whole fish landed. When contrasted with other seafood LCAs, the results were found to be lower than most other seafood. Our results demonstrate that Scottish-caught pelagic fish are a low carbon food source that could contribute to minimising food-related GHG emissions.



中文翻译:

苏格兰渔船捕捞的远洋鱼类对环境的影响

据估计,粮食生产将排放全球人为碳排放量的20%至30%。为了实现净零排放,需要过渡到低碳,可持续的食物来源。粮食生产所排放的温室气体总量中,只有4%归因于野生捕捞渔业。但是,在海鲜温室气体研究中,可以找到不同种类,捕捞方法和地区的各种估计。这项研究评估了苏格兰远洋船队捕捞对环境的影响,包括碳足迹(CF),苏格兰远洋船队是高度现代化的船队,目标是北海和大西洋的鲱鱼,鲭鱼和蓝鳕。进行了生命周期评估(LCA),以提供远洋鱼类与其他海鲜研究的标准化比较。2当量 捕鱼作业中燃烧的燃料是最大的贡献因素,约占CF的96%。该数字与小型远洋渔业的预期结果相符,通常小于1 kg CO 2当量。每公斤全鱼落地。与其他海鲜LCA相比,发现结果低于大多数其他海鲜。我们的结果表明,苏格兰捕捞的远洋鱼类是一种低碳食物来源,可以有助于减少与食物有关的温室气体排放。

更新日期:2020-12-24
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