Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution

The purpose of this paper is to examine the stability of the cooperative management agreement of the North Atlantic Bluefin tuna fisheries over time, as the stock recovers, assuming that the players were engaged in previous cooperation for a certain period of time. This analysis is focused on the sh...

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Main Author: Brasao, Ana
Format: Report
Language:English
Published: Nova SBE 2000
Subjects:
Online Access:http://hdl.handle.net/10362/83648
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spelling ftnewulisboa:oai:run.unl.pt:10362/83648 2023-05-15T17:34:41+02:00 Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution Brasao, Ana 2000-01 http://hdl.handle.net/10362/83648 eng eng Nova SBE FEUNL Working Paper Series;377 Brasão, Ana, Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution (January, 2000). FEUNL Working Paper Series No. 377 http://hdl.handle.net/10362/83648 openAccess Shapley value Time consistency Bluefin tuna Cooperative games workingPaper 2000 ftnewulisboa 2022-05-01T14:10:07Z The purpose of this paper is to examine the stability of the cooperative management agreement of the North Atlantic Bluefin tuna fisheries over time, as the stock recovers, assuming that the players were engaged in previous cooperation for a certain period of time. This analysis is focused on the sharing of the total net returns from cooperation using the concept of Shapley value. It is based on simulation and optimization results from a multi-gear age structured bio-economic model both for the East and the West Atlantic and assumes that the nations were initially in cooperation for either 5 or 15 years. In general terms, the results show, as expected, that the net present values from both cooperation and non-cooperation increase as the stock recovers. Nevertheless, the latter increases more than the former and consequently, the net gains from cooperation decrease. More specific results are obtained for the East and West Atlantic. In the former, it is proved that, the net bargaining power decrease and, as a result, the shares of the net gains from cooperation based on the Shapley Value tend to be equalized, that is, we tend to the Nash bargaining solution. In the latter, the bargaining power may increase and the trend for the equality is not clear. In both, cases there are situations in which the cooperative solution is in the core of the game, meaning that no other strategy yields better outcomes for the players. N/A Report North Atlantic Repositório da Universidade Nova de Lisboa (UNL) Nash ENVELOPE(-62.350,-62.350,-74.233,-74.233)
institution Open Polar
collection Repositório da Universidade Nova de Lisboa (UNL)
op_collection_id ftnewulisboa
language English
topic Shapley value
Time consistency
Bluefin tuna
Cooperative games
spellingShingle Shapley value
Time consistency
Bluefin tuna
Cooperative games
Brasao, Ana
Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution
topic_facet Shapley value
Time consistency
Bluefin tuna
Cooperative games
description The purpose of this paper is to examine the stability of the cooperative management agreement of the North Atlantic Bluefin tuna fisheries over time, as the stock recovers, assuming that the players were engaged in previous cooperation for a certain period of time. This analysis is focused on the sharing of the total net returns from cooperation using the concept of Shapley value. It is based on simulation and optimization results from a multi-gear age structured bio-economic model both for the East and the West Atlantic and assumes that the nations were initially in cooperation for either 5 or 15 years. In general terms, the results show, as expected, that the net present values from both cooperation and non-cooperation increase as the stock recovers. Nevertheless, the latter increases more than the former and consequently, the net gains from cooperation decrease. More specific results are obtained for the East and West Atlantic. In the former, it is proved that, the net bargaining power decrease and, as a result, the shares of the net gains from cooperation based on the Shapley Value tend to be equalized, that is, we tend to the Nash bargaining solution. In the latter, the bargaining power may increase and the trend for the equality is not clear. In both, cases there are situations in which the cooperative solution is in the core of the game, meaning that no other strategy yields better outcomes for the players. N/A
format Report
author Brasao, Ana
author_facet Brasao, Ana
author_sort Brasao, Ana
title Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution
title_short Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution
title_full Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution
title_fullStr Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution
title_full_unstemmed Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution
title_sort management of northern a atlantic bluefin tuna: the time consistency of the cooperative management solution
publisher Nova SBE
publishDate 2000
url http://hdl.handle.net/10362/83648
long_lat ENVELOPE(-62.350,-62.350,-74.233,-74.233)
geographic Nash
geographic_facet Nash
genre North Atlantic
genre_facet North Atlantic
op_relation FEUNL Working Paper Series;377
Brasão, Ana, Management of Northern a Atlantic Bluefin Tuna: the Time Consistency of the Cooperative Management Solution (January, 2000). FEUNL Working Paper Series No. 377
http://hdl.handle.net/10362/83648
op_rights openAccess
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