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Conference Paper Resilience and the Co-Evolution of Ecosystems and Institutions(1995) Folke, Carl; Berkes, Fikret"Resilience is the ability of a system to cope with change without collapsing. It is the capacity to absorb external perturbations, by actively adapting to an ever changing environment. Reduction in resilience means that vulnerability increases, with the risk that the whole system flips from one equilibrium state to another. Such flips are often a consequence of the misuse of the environment and the inertia of institutions to change. Smaller unpredictable perturbations that previously could be handled turn into major crises when extreme events intersect with internally generated vulnerability due to loss of resilience. To avoid such situations there is a need for institutions with the ability to respond to and manage environmental feedbacks, institutions that can cope with unpredictable perturbations before they accumulate and challenge the existence of the whole social-ecological system. This implies that it is not enough to only understand the institution in question. The dynamics of the ecosystems that form the biophysical precondition for the existence of the institution need to be taken into account as well. This study focuses on the linked social-ecological system, and its dynamic interrelationships. We regard it as one system with its social and ecological components co-evolving over time. It is in this context that we study traditional and newly-emergent social-ecological systems. We are analyzing 1) how the local social system has adapted to and developed a knowledge system for dealing with the dynamics of the ecosystem(s) including the resources and services that it generates, 2) specifically, how the local system maintains ecosystem resilience in the face of perturbations, and 3) those combinations of property rights arrangements, institutions, and knowledge systems which accomplish the above successfully. Examples will be presented from the Cree Indians of the Canadian eastern subartic and their resource management, and pastoral herders and rangeland management in semi-arid Africa."Journal Article Linkages Among Water Vapor Flows, Food Production, and Terrestrial Ecosystem Services(1999) Rockström, Johan; Gordon, Line; Folke, Carl; Falkenmark, Malin; Engwall, Maria"Global freshwater assessments have not addressed the linkages among water vapor flows, agricultural food production, and terrestrial ecosystem services. We perform the first bottom-up estimate of continental water vapor flows, subdivided into the major terrestrial biomes, and arrive at a total continental water vapor flow of 70,000 km3/yr (ranging from 56,000 to 84,000 km3/yr). Of this flow, 90% is attributed to forests, including woodlands (40,000 km3/yr), wetlands (1400 km3/yr), grasslands (15,100 km3/yr), and croplands (6800 km3/yr). These terrestrial biomes sustain society with essential welfare-supporting ecosystem services, including food production. By analyzing the freshwater requirements of an increasing demand for food in the year 2025, we discover a critical trade-off between flows of water vapor for food production and for other welfare-supporting ecosystem services. To reduce the risk of unintentional welfare losses, this trade-off must become embedded in intentional ecohydrological landscape management."Working Paper Linking Social and Ecological Systems for Resilience and Sustainability(1994) Berkes, Fikret; Folke, Carl"Traditional resource management systems or other local-level systems, based on the knowledge and experience of the resource users themselves, may have the potential to improve management of a number of ecosystems types. A considerable amount of evidence has accumulated to suggest that ecologically sensible indigenous practices have or had existed, for example, in the case of some tropical forests, island ecosystems, tropical fisheries, and semi-arid grazing lands. Given that Western resource management has not been all that successful in many of these environments, perhaps there are lessons to be learned from the cultural capital of societies which have elaborated these practices, a view echoed in Our Common Future. Ancient cultures and indigenous peoples do not have monopoly over ecological wisdom; there are cases of local, newly emergent or 'neo-traditional' resource management systems which cannot claim historical continuity over generations but which are nevertheless based on local knowledge and practice appropriately adapted to the ecological systems in which they occur."Conference Paper Framework for the Study of Indigenous Knowledge: Linking Social and Ecological Systems(1995) Berkes, Fikret; Folke, Carl"A considerable amount of evidence has accumulated to indicate that ecologically sensible indigenous practices have indeed existed in diverse ecosystems. Based on these findings, there is potential for improvement of resource management in environments such as northern coastal ecosystems, arid and semi-arid land ecosystems, mountain ecosystems, tropical forest ecosystems, subarctic ecosystems and island ecosystems. As compared to the rather narrow set of prescriptions of Western scientific resource management systems, some of which may inadvertently act to reduce ecosystem resilience, indigenous management is often associated with a diversity of property rights regimes and common-property institutions and locally-adapted practices, and it may operate under systems of knowledge substantially different from Western knowledge systems. "The framework we propose distinguishes seven sets of variables which can be used to describe social and ecological system characteristics and linkages in any indigenous resource use case study: (1) ecosystem, (2) resource users and technology, (3) local knowledge, (4) property rights, (5) institutions, (6) pattern of interactions, and (7) outcomes. Our framework borrows from that of Oakerson for the analysis of common-property management, and that of Ostrom for institutional analysis. "The key concept in our framework is resilience, to emphasize the importance of conditions in which disturbances (perturbations) can flip a system from one equilibrium state to another. We use Holling's definition of resilience, the magnitude of disturbance that can be absorbed before a system changes its structure by changing the variables and processes that control behavior. We hypothesize that: (1) maintaining resilience is important for both resources and social institutions, and therefore the well-being of social and ecological systems is closely linked; (2) successful traditional knowledge systems will allow perturbations to enter an ecosystem on a scale which does not threaten its structure and functional performance, and the services it provides; and (3) there will be evidence of co-evolution in such traditional systems, making the local community and their institutions "in tune" over time with the natural processes of the particular ecosystem."