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首页> 外文期刊>Environmental Science & Technology >Re-evaluating Primary Biotic Resource Use for Marine Biomass Production: A New Calculation Framework
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Re-evaluating Primary Biotic Resource Use for Marine Biomass Production: A New Calculation Framework

机译：重新评估海洋生物质生产的主要生物资源利用：新的计算框架

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摘要

The environmental impacts of biomass harvesting can be quantified through the amount of net primary production required to produce one unit of harvested biomass (SPPR-specific primary production required). This paper presents a new calculation framework that explicitly takes into account full rood web complexity and shows that the resulting SPPR for toothed whales in the Icelandic marine ecosystem is 2.8 times higher than the existing approach based on food web simplification. In addition, we show that our new framework can be coupled to food web modeling to examine how uncertainty on ecological data and processes can be accounted for while estimating SPPR. This approach reveals that an increase in the degree of heterotrophy by flagellates from 0% to 100% results in a two-fold increase in SPPR estimates in the Barents Sea. It also shows that the estimated SPPR is between 3.9 (herring) and 5.0 (capelin) times higher than that estimated when adopting food chain theory. SPPR resulting from our new approach is only valid for the given time period for which the food web is modeled and cannot be used to infer changes in SPPR when the food web is altered by changes in human exploitation or environmental changes.
机译：可以通过生产一个单位的已收获生物量所需的净初级生产量（需要SPPR特定的初级生产）来量化生物量收获对环境的影响。本文提出了一个新的计算框架，该框架明确考虑了整个巢网的复杂性，并表明，冰岛海洋生态系统中齿鲸的最终SPPR值是基于简化食物网的现有方法的2.8倍。此外，我们表明，我们的新框架可以与食物网建模结合使用，以检查在估算SPPR时如何考虑生态数据和过程的不确定性。这种方法表明鞭毛将异养菌的程度从0％增加到100％，会使巴伦支海的SPPR估算值增加两倍。它还表明，估计的SPPR比采用食物链理论时的估计值高3.9（鲱鱼）至5.0（毛鳞鱼）之间。由我们的新方法得出的SPPR仅在建模食物网的给定时间段内有效，并且当人类开发或环境变化导致食物网改变时，不能用于推断SPPR的变化。

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  • 来源
    《Environmental Science & Technology》 |2015年第19期|11586-11593|共8页
  • 作者

    Anh D. Luong; Thomas Schaubroeck; Jo Dewulf; Frederik De Laender;

  • 作者单位

    Department of Sustainable Organic Chemistry and Technology, Research Group EnVOC, Ghent University, Coupure Links 653, Ghent B-9000, Belgium,Department of Environmental Management, Faculty of Environment, Vietnam National University of Agriculture, Hanoi 10000, Vietnam;

    Department of Sustainable Organic Chemistry and Technology, Research Group EnVOC, Ghent University, Coupure Links 653, Ghent B-9000, Belgium;

    Department of Sustainable Organic Chemistry and Technology, Research Group EnVOC, Ghent University, Coupure Links 653, Ghent B-9000, Belgium,European Commission, Joint Research Centre, Institute for Environment and Sustainability, Sustainability Assessment Unit, Via E. Fermi 2749, I-21027 Ispra, Varese, Italy;

    Research Unit in Environmental and Evolutionary Biology, Universite de Namur, Rue de Bruxelles, 61, Namur 5000, Belgium;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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