The role of aquatic resources to food security is both promising and constrained since the global seafood consumption is increasing while marine fisheries approach the limit of what it can produce. In Sweden, the seafood consumption per capita is higher than the European and world average but the current dietary advice is to increase consumption. Freshwater fisheries have in general been paid less attention in food security discussions. Carp fishes (Cyprinidae) in Sweden have lost their historical value and are currently, both understudied and underutilized. Here we use a combined environmental assessment approach to examine the environmental sustainability of current and potential cyprinid fisheries. We found that current commercial fisheries for Swedish cyprinids in lakes have an average carbon footprint of 0.77 kg CO 2 e per kg of edible product, substantially smaller than most of the popular marine and terrestrial protein sources consumed in Sweden today. This could be even lower if cyprinid resources were better utilized than currently. The cyprinids however exhibited different vulnerability to fishing pressure and are today associated with data deficiencies. Hence, it is currently uncertain how much food for human consumption they can contribute to. Improved consumer interest and management attention is needed, but to the Swedish diet, cyprinids offer a promising opportunity for future more sustainable and nutritious food systems.

中文翻译：

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瑞典湖泊中的鲤科鱼类渔业：评估作为食物的数据有限的淡水鱼类资源的综合环境评估方法

水生资源对粮食安全的作用既有前景又有限制，因为全球海产品消费量正在增加，而海洋渔业已接近其产量的极限。在瑞典，人均海鲜消费量高于欧洲和世界平均水平，但目前的饮食建议是增加消费量。淡水渔业在粮食安全讨论中一般较少受到关注。瑞典的鲤鱼（鲤科）已失去其历史价值，目前既未得到充分研究，也未得到充分利用。在这里，我们使用组合环境评估方法来检查当前和潜在的鲤科鱼类渔业的环境可持续性。我们发现，目前在湖泊中捕捞瑞典鲤科鱼类的商业渔业的平均碳足迹为 0。每千克可食用产品产生 77 千克 CO 2 e，远小于瑞典当今消费的大多数流行的海洋和陆地蛋白质来源。如果比目前更好地利用 cyprinid 资源，这可能会更低。然而，鲤科鱼类对捕捞压力表现出不同的脆弱性，今天与数据不足有关。因此，目前尚不确定它们可以为人类消费多少食物。需要提高消费者的兴趣和管理注意力，但对于瑞典饮食，鲤科动物为未来更可持续和更有营养的食品系统提供了一个有希望的机会。然而，鲤科鱼类对捕捞压力表现出不同的脆弱性，今天与数据不足有关。因此，目前尚不确定它们可以为人类消费多少食物。需要提高消费者的兴趣和管理注意力，但对于瑞典饮食，鲤科动物为未来更可持续和更有营养的食品系统提供了一个有希望的机会。然而，鲤科鱼类对捕捞压力表现出不同的脆弱性，今天与数据不足有关。因此，目前尚不确定它们可以为人类消费多少食物。需要提高消费者的兴趣和管理注意力，但对于瑞典饮食，鲤科动物为未来更可持续和更有营养的食品系统提供了一个有希望的机会。