نتایج جستجو برای: iranian fisheries
تعداد نتایج: 55408 فیلتر نتایج به سال:
Many African countries are among the poorest in the world and as a result, the development objective of most African countries is to reduce or even eradicate poverty through modernising agricultural production including fisheries. In countries around Lake Victoria, fisheries contribute 3-5% of GDP. Fisheries also contribute significantly to export earnings of a number of African countries. On a...
Two main problems can be identified in fisheries currently: overfishing and negative effects on ecosystems (including bycatch). Both result in a reduction in natural capital. In recent years a concept for a theory of sustainability was developed at our institute. Part of the work has been to develop a strategy in fisheries for creating sustainable use systems, which can be considered as "invest...
Understanding the pressures of fisheries on the ecosystem is crucial for effective management. Fishery removals, or catch, are composed of both landings and discards. However, the use of discards data in studies investigating the effect of the fishing pressures is sparse. Here, we explore the individual contribution of both these catch components to the overall pressure of fisheries on the ecos...
Reef fisheries provide a vital source of income and food to millions of people worldwide. Reef fishes are important to many countries in the Caribbean not only for their value to the fisheries, but also their value to the tourism industry, where they are an important part of the snorkeling and diving experience. Many Caribbean reef fisheries have been overexploited for decades and often their d...
School of Aquatic and Fishery Sciences, University of Washington, Box 355020, Seattle, WA 98195, USA; Dept. Fisheries and Wildlife, Oregon State University, 104 Nash Hall, Corvallis, OR 97331, USA; Institute of Marine & Coastal Sciences, Rutgers University, 71 Dudley Rd., New Brunswick, NJ 08901, USA; National Marine Fisheries Service, Northeast Fisheries Science Center, 166 Water Street, Woods...
In seeking to answer the question ‘who should be included in fisheries co-management?’, a constructive critique of the existing co-management literature is provided by filling the gaps of Habermas’s deliberative theory of democracy with Dewey’s pragmatism. Three conditions for ensuring democratic co-management are extrapolated from the theories: actors’ authority over decision making (empowerme...
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BACKGROUND Olive trees (Olea europaea subsp. europaea var. europaea) naturally grow in areas spanning the Mediterranean basin and towards the East, including the Middle East. In the Iranian plateau, the presence of olives has been documented since very ancient times, though the early history of the crop in this area is shrouded in uncertainty. METHODS The varieties presently cultivated in Ira...
Commercial fisheries exert high mortalities on the stocks they exploit, and the consequent selection pressure leads to fisheries-induced evolution of growth rate, age and size at maturation, and reproductive output. Productivity and yields may decline as a result, but little is known about the rate at which such changes are likely to occur. Fisheries-induced evolution of exploited populations h...
Rüdiger Voss 1*, Hans-Harald Hinrichsen 2, Daniel Stepputtis 3, Matthias Bernreuther4, Bastian Huwer5, Viola Neumann5, and Jörn O. Schmidt 1 Sustainable Fisheries, Department of Economics, University of Kiel, Wilhelm-Seelig Platz 1, 24118 Kiel, Germany Leibniz Institute of Marine Sciences, Düsternbrooker Weg 20, 24105 Kiel, Germany Institute of Baltic Sea Fisheries, Johann Heinrich von Thünen-I...
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