Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, 15782, Santiago, Spain,
Ambio. 2014 Apr;43(3):381-94. doi: 10.1007/s13280-013-0426-2. Epub 2013 Aug 6.
Life cycle assessment (LCA) has developed into a useful methodology to assess energy consumption of fishing fleets and their derived seafood products, as well as the associated environmental burdens. In this study, however, the life cycle inventory data is used to provide a dimensionless ratio between energy inputs and the energy provided by the fish: the edible protein energy return on investment (ep-EROI). The main objective was to perform a critical comparison of seafood products landed in Galicia (NW Spain) in terms of ep-EROI. The combination of energy return on investment (EROI) with LCA, the latter having standardized mechanisms regarding data acquisition and system boundary delimitation, allowed a reduction of uncertainties in EROI estimations. Results allow a deeper understanding of the energy efficiency in the Galician fishing sector, showing that small pelagic species present the highest ep-EROI values if captured using specific fishing techniques. Finally, results are expected to provide useful guidelines for policy support in the EU's Common Fisheries Policy.
生命周期评估（LCA）已发展成为评估渔船及其衍生海鲜产品的能源消耗以及相关环境负担的有用方法。然而，在本研究中，生命周期清单数据被用来提供一个无量纲的比率，即能源投入与鱼类提供的能量之间的比率：可食用蛋白质投资能源回报（ep-EROI）。主要目的是根据 ep-EROI 对在加利西亚（西班牙西北部）上岸的海鲜产品进行批判性比较。将投资能源回报（EROI）与 LCA 相结合，后者在数据获取和系统边界划定方面具有标准化机制，从而减少了 EROI 估计的不确定性。研究结果使我们能够更深入地了解加利西亚渔业部门的能源效率，表明如果使用特定的捕捞技术捕捞小型中上层鱼类，则其具有最高的 ep-EROI 值。最后，研究结果有望为欧盟共同渔业政策的政策支持提供有用的指导。
