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Conference Paper Community-Based Management and Sustainable Development(1989) Berkes, Fikret; Kislalioglu, Mina"Should a fishery be managed by limiting the number of licenses? Should it be managed by harvest quotas? How should the resource be allocated? How can conflicts among groups of fishermen be settled? What is the role of territorial use rights (TURFS)? How and on what basis can decisions be made about such management measures as mesh sizes and closed seasons? Research in the area of management interventions does not fall clearly into the realm of any one discipline: biology, oceanography, economics, political science, geography, planning, sociology, anthropology."Working Paper Fisheries and the Prisoner's Dilemma Game: Conditions for the Evolution of Cooperation among Users of Common Property Resources(1987) Berkes, Fikret; Kence, Aykut"Recent studies using Prisoner's Dilemma framework have led to a theory of cooperation based on repeated encounters and the development of reciprocity. The theory is applicable to a diversity of disciplines and has implications fort he use of common property resources such as fisheries, i.e. what are the conditions under which the users of a fishery resource will cooperate to avoid, what some consider, the inevitable 'tragedy of the commons'? The Prisoner's Dilemma approach helps formalize some of the recent theoretical developments on conditions of successful common property use. In particular, it offers insights regarding the importance of probability of encounter among users, development of reciprocal relations among them, the number of users in an area and the degree of crowding, heterogeneity of user groups, the importance of local residency, and the supply-demand characteristics of the resource."