Impacts of climate variability on the tuna economy of Seychelles

Jan Robinson, Patrice Guillotreau, Ramòn Jiménez-Toribio, Frédéric Lantz, Lesya Nadzon, Juliette Dorizo, Calvin Gerry and Francis Marsac ()
Additional contact information
Jan Robinson: SFA - Seychelles Fishing Authority (SFA) - Université des Seychelles
Ramòn Jiménez-Toribio: MEMPES- AEA - university of Huelva - Universidad de Huelva
Frédéric Lantz: IFPEN - IFP Energies nouvelles
Lesya Nadzon: LEMNA - Laboratoire d'économie et de management de Nantes Atlantique - IEMN-IAE Nantes - Institut d'Économie et de Management de Nantes - Institut d'Administration des Entreprises - Nantes - UN - Université de Nantes, IFPEN - IFP Energies nouvelles
Juliette Dorizo: SFA - Seychelles Fishing Authority (SFA) - Université des Seychelles
Calvin Gerry: SFA - Seychelles Fishing Authority (SFA) - Université des Seychelles
Francis Marsac: IRD - Institut de Recherche pour le Développement

Working Papers from HAL

Abstract: Many small island states have developed economies that are strongly dependent on tuna fisheries. Consequently, they are vulnerable to the socio-economic effects of climate change and variability, processes that are known to impact upon tuna fisheries distribution and productivity. The aim of this study was to assess the impacts of climate oscillations on the tuna-dependent economy of Seychelles. Using a multiplier approach, the direct, indirect and induced economic effects of the tuna industry declined by 58%, 34% and 60%, respectively, in 1998, the year of a strong warming event in the western Indian Ocean. Patterns in tuna purse seine vessel expenditures in port were substantially modified by strong climate oscillations. A cointegration time-series model predicted that a 40% decline in tuna landings and transhipment in Port Victoria, a value commensurate with that observed in 1998, would result in a 34% loss for the local economy. Of several indices tested, the Indian Oscillation Index was the best at predicting the probability of entering a regime of low landings and transhipment. In 2007, a moderate climate anomaly was compounded by prior overfishing to produce a stronger that expected impact on the fishery and economy of Seychelles. The effects of fishing and climate variability on tuna stocks are complex and pose significant challenges for fisheries management and the economic development of countries in the Indian Ocean.

Date: 2009
Note: View the original document on HAL open archive server: https://hal.science/hal-00430051
References: Add references at CitEc
Citations:

Downloads: (external link)
https://hal.science/hal-00430051/document (application/pdf)

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:hal:wpaper:hal-00430051

Access Statistics for this paper

More papers in Working Papers from HAL
Bibliographic data for series maintained by CCSD ().