Economic trade-offs of harvesting the ocean twilight zone: An ecosystem services approach

Raúl Prellezo, Xavier Corrales, Eider Andonegi, Carlos Bald, Jose A. Fernandes-Salvador, Bruno Iñarra, Xabier Irigoien, Adrian Martin, Arantza Murillas-Maza and Deniz Tasdemir

Ecosystem Services, 2024, vol. 67, issue C

Abstract: 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.

Keywords: Mesopelagics; Economics; Valuation; Fishing; Ecosystem services; Uncertainty (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S2212041624000391
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:ecoser:v:67:y:2024:i:c:s2212041624000391

DOI: 10.1016/j.ecoser.2024.101633

Access Statistics for this article

Ecosystem Services is currently edited by Leon C Braat

More articles in Ecosystem Services from Elsevier
Bibliographic data for series maintained by Catherine Liu ().