气候变化加剧了来自海鲜的营养差异
William W L Cheung1, Eva Maire2, Muhammed A Oyinlola1
1Changing Ocean Research Unit, Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, British Columbia Canada.
概括
海鲜提供了必需的营养素,但气候变化威胁到未来的可用性,特别是在低收入国家. 缓解对全球营养安全和健康公平至关重要.
科学领域:
- 海洋生物学 海洋生物学
- 营养科学 营养科学
- 气候变化对环境的影响.
背景情况:
- 海鲜是生物可用微量营养素的重要来源,对人类健康至关重要.
- 由于气候变化,海鲜营养生产的过去和未来变化尚未得到充分理解.
- 来自渔业和水产养殖的微量营养素的可用性对于全球营养安全至关重要.
研究的目的:
- 评估过去的趋势,并预测全球渔业和海洋养殖业未来的微量营养素可用性.
- 评估气候变化对海鲜衍生营养物质供应的影响.
- 突出对弱势群体的不成比例影响,并为缓解策略提供信息.
主要方法:
- 利用重建的渔业数据库和预测模型来分析历史和未来的营养物质可用性.
- 关键营养素如铁,和omega-3脂肪酸的量化变化.
- 在不同的气候变化场景 (1.5-4.0°C升温) 下建模营养的可用性.
主要成果:
- 自20世纪90年代以来,海鲜营养素 (铁,,欧米茄-3) 的可用性有所增加,但蛋白质的可用性停滞不前.
- 预计气候变化将减少营养素的可用性,对热带低收入国家产生不成比例的影响.
- 4°C升温情景可能导致低收入国家到2100年营养供应减少30%左右,而在1.5-2.0°C升温情景下降10%左右.
结论:
- 有效减缓气候变化对于确保脆弱国家未来的营养安全至关重要.
- 迫切需要采取行动,以应对海鲜衍生的营养素的潜在下降,并支持全球健康公平.
- 这项研究强调了气候,渔业和人类营养之间的相互联系.
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