Sustainable optimization of global aquatic omega-3 supply chain could substantially narrow the nutrient gap

Sustainable optimization of global aquatic omega-3 supply chain could substantially narrow the nutrient gap
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全球水产 omega-3 供应链的可持续优化可大幅缩小营养缺口

DOI:
10.1016/j.resconrec.2022.106260
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发表时间:
2022
期刊:
Conservation and Recycling
影响因子:
--
通讯作者:
Golden, Christopher D.
Golden, Christopher D.
中科院分区:
--
文献类型:
--
作者:
Shepon, Alon;Makov, Tamar;Hamilton, Helen A.;Müller, Daniel B.;Gephart, Jessica A.;Henriksson, Patrik J.G.;Troell, Max;Golden, Christopher D.

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Omega-3 EPA 和 DHA 脂肪酸对人类健康至关重要,但目前人类的营养需求大于供应。随着需求的增加,以及气候变化和过度捕捞,水产食品的丰富性及其所含的 omega-3 含量可能会减少,这种营养缺口将会扩大。识别并减少全球水产供应链中的损失和低效率对于缩小营养缺口具有巨大潜力。在这里,我们使用优化模型表明,通过将饲料投入转移到生产每种饲料投入中 omega-3 含量最高的物种(即鲤鱼和甲壳类动物),将其他生产流转向直接野生鱼类消费,提高副产品利用率,并减少零售和消费者层面的浪费,与目前的基线相比,人类 omega-3 的供应量可能会增加多达 50%(达到 630 kty−1)。然后,我们通过优先考虑政策和确定需求方和供应方干预措施来讨论我们的研究结果的影响,以实现这些雄心勃勃的变化。这项工作强调了管理水生资源以提高资源利用率的紧迫性,并强调了随着新的 omega-3 替代来源大规模出现,即使是部分调整我们提出的措施也可以在多大程度上缩小当前和未来的营养缺口。
Omega-3 EPA and DHA fatty acids are vital for human health, but current human nutritional requirements are greater than supply. This nutrient gap is poised to increase as demand increases and the abundance of aquatic foods and the amount of omega-3 they contain may dwindle due to climate change and overfishing. Identifying and mitigating loss and inefficiencies across the global aquatic supply chain has great potential for narrowing this nutrient gap. Here, using an optimization model, we show that omega-3 supply to humans could potentially increase by as much as 50% (reaching 630 kty−1) compared to present baseline by shifting feed inputs to produce species that have the highest omega-3 content per feed input (i.e. carp and crustaceans), diverting other production flows towards direct wild fish consumption, improving byproduct utilization, and reducing waste at the retail and consumer level. We then discuss the implications of our findings by prioritizing policies and identifying demand- and supply-side interventions to realize these ambitious changes. This work emphasizes the urgency needed in managing aquatic resources towards greater utilization of resources and highlights the extent to which even partial adaptation of the measures we propose can have on narrowing the present and future nutrient gap as novel alternative sources of omega-3 become available on a larger scale.
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