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相关概念视频

Sustainable Development01:43

Sustainable Development

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As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
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Design and Use of an Apparatus for Quantifying Bivalve Suspension Feeding at Sea
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养全球水产养殖

Spencer Roberts1, Jennifer Jacquet1, Patricia Majluf2,3

  • 1Department of Environmental Science and Policy and Abess Center for Ecosystem Science and Policy, University of Miami, Miami, FL, USA.

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|October 16, 2024
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概括

水产养殖料严重依赖野生鱼类,挑战了可持续性要求. 这项研究揭示了更高的鱼类输入/输出比率和死亡率,质疑该部门在粮食安全中的作用.

科学领域:

  • 水产养殖和渔业科学 水产养殖和渔业科学
  • 海洋生态海洋生态学
  • 可持续的粮食系统 可持续的粮食系统

背景情况:

  • 全球水产养殖业的增长需要增加料供应.
  • 目前水产养殖的可持续性论点经常引用减少对野生鱼类的依赖.
  • 之前对水产养殖料中野生鱼类使用的估计可能无法完全考虑所有投入.

研究的目的:

  • 通过量化野生鱼类的使用,重新评估养水产养殖的可持续性.
  • 评估以前对水产养殖中的鱼类输入-输出比率的估计的准确性.
  • 调查陆地成分和野生鱼类死亡率对水产养殖环境足迹的影响.

主要方法:

  • 利用四个行业报告的料成分数据集来计算鱼类输入-输出比率.
  • 在料计算中纳入野生鱼类的料和副产品.
  • 开发了一种包括捕捞期间野生鱼类死亡率和排除未养系统的指标.

主要成果:

  • 计算出的鱼类输入-输出比率从0.36到1.15,明显高于之前的估计 (27-307%).
  • 野生鱼类死亡率与养殖鱼类产量比率在0.57至1.78之间.
  • 观察到料作物增加了五倍,与1997-2017年野生鱼类使用报告的下降同时.

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结论:

  • 养水产养殖的可持续性受到野生鱼类利用率高于估计的挑战.
  • 越来越多地依赖陆地料成分可能会抵消野生鱼类使用量的减少.
  • 这些发现质疑水产养殖在全球粮食安全中的目前作用,并需要对可持续实践进行重新评估.