当前位置: X-MOL 学术Aquacult. Econo. Manag. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Technical efficiency and environmental impact of seabream and seabass farms
Aquaculture Economics & Management ( IF 3.9 ) Pub Date : 2020-10-29 , DOI: 10.1080/13657305.2020.1840662
Rasmus Nielsen 1 , Isaac Ankamah-Yeboah 2 , Ignacio Llorente 3
Affiliation  

Abstract Sea cage farming of seabream and seabass is the most important form of aquaculture production in the Mediterranean Sea. Despite the continuous global growth in aquaculture production and demand, the economic performance of seabream and seabass companies has not followed the same trend. In recent years, companies have faced successive periods of market instability, with high volatility in supply and market prices that have strongly affected their operational margins. Despite the regional importance of this industry, only a handful of studies have examined the economic performance of these farms. In this paper, we investigate the technical efficiency and scale effects of Mediterranean aquaculture farms. Furthermore, environmental impact in terms of nutrient emissions from the farms is examined and discussed. Technical efficiency effects are analyzed using Data Envelopment Analysis (DEA), and the bootstrap procedure is used for bias correction. The results show that the mean technical efficiency could be improved by between 16% and 34%, and scale efficiency suggests that farms could improve their efficiency by operating at an optimal scale. Compared to measurements in previous studies, the environmental variables show that the emission of nutrients from the farms per kilo of fish produced has not changed over the past twenty years. Finally, policy implications suggest that more attention toward improving technical efficiency may help improve the robustness of the sector and that environmental regulation might be needed in order to improve the environmental performance of farms.

中文翻译:

海鲷和鲈鱼养殖场的技术效率和环境影响

摘要 鲷鱼和鲈鱼的海水网箱养殖是地中海最重要的水产养殖生产形式。尽管全球水产养殖生产和需求持续增长,但鲷鱼和鲈鱼公司的经济表现并未遵循同样的趋势。近年来,公司连续面临市场不稳定时期,供应和市场价格的高度波动严重影响了它们的运营利润率。尽管该行业具有区域重要性,但只有少数研究检查了这些农场的经济表现。在本文中,我们调查了地中海水产养殖场的技术效率和规模效应。此外,还检查和讨论了农场养分排放对环境的影响。使用数据包络分析 (DEA) 分析技术效率影响,并使用引导程序进行偏差校正。结果表明,平均技术效率可以提高 16% 到 34%,规模效率表明农场可以通过以最佳规模运营来提高效率。与之前研究中的测量结果相比,环境变量表明,在过去 20 年中,养殖场每生产一公斤鱼的营养物质排放量没有变化。最后,政策影响表明,更多地关注提高技术效率可能有助于提高该部门的稳健性,并且可能需要环境监管来改善农场的环境绩效。并且引导程序用于偏差校正。结果表明,平均技术效率可以提高 16% 到 34%,规模效率表明农场可以通过以最佳规模运营来提高效率。与之前研究中的测量结果相比,环境变量表明,在过去 20 年中,养殖场每生产一公斤鱼的营养物质排放量没有变化。最后,政策影响表明,更多地关注提高技术效率可能有助于提高该部门的稳健性,并且可能需要环境监管来改善农场的环境绩效。并且引导程序用于偏差校正。结果表明,平均技术效率可以提高 16% 到 34%,规模效率表明农场可以通过以最佳规模运营来提高效率。与之前研究中的测量结果相比,环境变量表明,在过去 20 年中,养殖场每生产一公斤鱼的营养物质排放量没有变化。最后,政策影响表明,更多地关注提高技术效率可能有助于提高该部门的稳健性,并且可能需要环境监管来改善农场的环境绩效。规模效率表明,农场可以通过以最佳规模经营来提高效率。与之前研究中的测量结果相比,环境变量表明,在过去 20 年中,养殖场每生产一公斤鱼的营养物质排放量没有变化。最后,政策影响表明,更多地关注提高技术效率可能有助于提高该部门的稳健性,并且可能需要环境监管来改善农场的环境绩效。规模效率表明,农场可以通过以最佳规模经营来提高效率。与之前研究中的测量结果相比,环境变量表明,在过去 20 年中,养殖场每生产一公斤鱼的营养物质排放量没有变化。最后,政策影响表明,更多地关注提高技术效率可能有助于提高该部门的稳健性,并且可能需要环境监管来改善农场的环境绩效。
更新日期:2020-10-29
down
wechat
bug