Objective In Patagonia desertification and depressed wool prices are leading to a decline of the traditional sheep livestock production, and to migration of rural population. Diversifications of economic activities are, therefore, needed urgently. Aquaculture emerges as an activity with rapid recuperation of initial investment. The lakes of the Andean-Patagonian Region appear to be suitable to sustain salmonid productions. Feed supplementation in cage culture, however, implies a potential for eutrophication, diminishing production sustainability. Fish farming wastes, being rich in organic matter and nutrients, may be used as fertilizers in the production of regional crops. This reutilization of wastes would allow to develop fish farming minimizing lake pollution; to decrease fertilization costs of agricultural products of the same region, and to acquire a general methodology of organic waste reutilization in agriculture. To achieve these objectives, the following studies are proposed: 1) cage culture effects on water quality of the Alicura Reservoir, where a potential production of 8,600 tn rainbow trout/yr was estimated; 2) nutrient loads and dvnamics (specially N and P);3) extraction efficiency of fish farming wastes; 4) agricultural evaluation of wastes applied to soils from volcanic origin; 5) evaluation of costs related to extraction and transport of wastes to farmlands, economic benefits derived from production, cost increases due to eutrophication that would imply more dam maintenance, losses of tourism, decrease in water quality for human consumption and fish farming; 6) results will be transferred to institutions involved in the administration and control of water resources, as well as to professionals, farmers and students. Fields of science agricultural sciencesagriculture, forestry, and fisheriesfisheriesnatural sciencesearth and related environmental scienceshydrologynatural sciencesearth and related environmental sciencesenvironmental sciencespollutionagricultural sciencesagriculture, forestry, and fisheriesagricultureagricultural sciencesanimal and dairy sciencedomestic animalsanimal husbandry Programme(s) FP3-STD 3 - Specific research and technological development programme (EEC) in the field of the life sciences and technologies for developing countries, 1990-1994 Topic(s) Data not available Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria Address 28080 Madrid Spain See on map EU contribution No data Participants (2) Sort alphabetically Sort by EU Contribution Expand all Collapse all Universidad Nacional de Comahue Argentina EU contribution € 0,00 Address Apartado de correos 8400 San carlos de bariloche - rio negro See on map Other funding No data University of Stirling United Kingdom EU contribution € 0,00 Address University of stirling FK9 4LA Stirling See on map Other funding No data
