收获海洋奇幻地带的经济权衡:生态系统服务方法

IF 6.1 2区 环境科学与生态学 Q1 ECOLOGY Ecosystem Services Pub Date : 2024-05-08 DOI:10.1016/j.ecoser.2024.101633
Raúl Prellezo , Xavier Corrales , Eider Andonegi , Carlos Bald , Jose A. Fernandes-Salvador , Bruno Iñarra , Xabier Irigoien , Adrian Martin , Arantza Murillas-Maza , Deniz Tasdemir
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引用次数: 0

摘要

海洋中层或海洋暮光区(OTZ)在相对原始的环境中蕴藏着大量鱼类,因此可能会吸引人们将其作为商业渔场。在这项研究中,我们从经济角度评估了比斯开湾中上层水层提供的不同服务与商业开发的社会效益之间可能存在的权衡。利益主要来源于可能将这类物种作为生产鱼粉和鱼油的原料。成本则来自气候调节和文化服务的损失,以及其他商业物种供应服务的损失。为此,我们将目前的非开发状态与中上层鱼类的捕捞量达到最大可持续产量的情况进行了比较。结果表明,如果捕捞中上层鱼类,每年将给比斯开湾带来 120 万欧元的平均损失,但损失范围在 4,200 万欧元到 4,800 万欧元之间。这种不确定性主要来自对中上层鱼类生物量的有限了解,但也来自对所研究生态系统其他物种生物量的不确定性。较大的范围表明,需要更好地了解中上层生态系统,但结果也表明,在不开发的情况下,OTZ 提供的生态系统服务可能比从该海层捕捞的鱼类中可能获得的鱼粉和鱼油更有价值。
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Economic trade-offs of harvesting the ocean twilight zone: An ecosystem services approach

The mesopelagic or ocean twilight zone (OTZ) in the ocean contains huge numbers of fish in a relatively pristine environment and may therefore attract interest as a commercial fishery. In this study we evaluate in economic terms, the likely trade-offs between the different services provided by the mesopelagic layer in the Bay of Biscay and the societal benefits of its commercial exploitation. Benefits arise mainly from the likely use of this group of species as raw material for producing fishmeal and fish oil. Costs are derived from the loss in climate regulating and cultural, services, but also from the loss in the provisioning service of other commercial species. To do so we compare the current non-exploited status with a situation in where mesopelagic fishes are harvested at levels capable of producing the Maximum Sustainable Yield. Results suggest that if mesopelagic fishes are harvested, a mean value of 1.2 million Euro loss in a year will be created in the Bay of Biscay, although in a range between 42 million Euro loss and 48 Euro million benefits. This uncertainty comes, mainly, from the limited existing knowledge of the mesopelagic fishes’ biomass but also from the uncertainty on the biomass of the rest of the species of the studied ecosystem. The large range indicates that a better understanding of the mesopelagic ecosystem is needed, however, results also show that ecosystem services under no exploitation provided by the OTZ could be more valuable than the fishmeal and fish oil that potentially could be obtained from the fishes harvested in this sea layer.

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来源期刊
Ecosystem Services
Ecosystem Services ECOLOGYENVIRONMENTAL SCIENCES&-ENVIRONMENTAL SCIENCES
CiteScore
14.90
自引率
7.90%
发文量
109
期刊介绍: Ecosystem Services is an international, interdisciplinary journal that is associated with the Ecosystem Services Partnership (ESP). The journal is dedicated to exploring the science, policy, and practice related to ecosystem services, which are the various ways in which ecosystems contribute to human well-being, both directly and indirectly. Ecosystem Services contributes to the broader goal of ensuring that the benefits of ecosystems are recognized, valued, and sustainably managed for the well-being of current and future generations. The journal serves as a platform for scholars, practitioners, policymakers, and other stakeholders to share their findings and insights, fostering collaboration and innovation in the field of ecosystem services.
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