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The biophysical costs of technology: Assessing the environmental impacts of alternative salmonid culture systems in Canada using life cycle assessment.

机译:技术的生物物理成本:使用生命周期评估来评估加拿大替代鲑鱼养殖系统对环境的影响。

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摘要

This study employed Life Cycle Assessment (LCA) to quantify and compare the potential environmental impacts of culturing salmonids in a conventional marine net-pen system with those of three reportedly "green" alternatives; a marine floating bag system; a land-based saltwater flow-through system; and a land-based freshwater recirculating system. Results of the study indicate that while the use of these alternative systems may reduce the local ecological impacts typically associated with net-pen salmon farming, the increased material and energy demands of these closed-containment systems may also result in substantial contributions to several environmental impacts of global concern, including global warming, resource depletion, and acidification. While these systems are currently being promoted as environmentally-friendly alternatives, this study reveals that there may be unintended environmental consequences associated with their use that should be considered in any further evaluation of their environmental performance.
机译:这项研究利用生命周期评估(LCA)来量化和比较在传统的海洋网围栏系统中养殖鲑鱼与三种据报道的“绿色”替代物对鲑鱼的潜在环境影响;海上浮袋系统;陆基盐水流通系统;以及陆基淡水循环系统。研究结果表明,虽然使用这些替代系统可能会减少通常与网钓鲑鱼养殖有关的当地生态影响,但这些封闭系统的材料和能源需求增加也可能导致对多种环境影响的重大贡献全球关注的问题,包括全球变暖,资源枯竭和酸化。尽管目前正在推广这些系统作为环境友好型替代品,但这项研究表明,使用它们可能会带来意想不到的环境后果,任何对其环境绩效的进一步评估都应考虑这些后果。

著录项

  • 作者

    Ayer, Nathan W.;

  • 作者单位

    Dalhousie University (Canada).;

  • 授予单位 Dalhousie University (Canada).;
  • 学科 Biology Oceanography.; Environmental Sciences.
  • 学位 M.E.S.
  • 年度 2007
  • 页码 104 p.
  • 总页数 104
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 海洋生物;环境科学基础理论;
  • 关键词

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