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  • Fish Stock Assesment in Indonesia: Current Status and Future Direction

    Creator:
    Mingkid, Winda Mercedes, Wiyono, Eko Sri, Pinontoan, Benny, Watanabe, Seiichi, and Yokota, Masashi
    Abstract:
    The aim of management is to ensure the sustainability of the resource while maximizing economic returns to the community. This paper explained methods of detecting fisheries stock in Indonesia including survey, swept area, acoustic, statistical and tagging. In order to succeed in the future, integrated work between the decision maker...
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    Research Paper
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    inhabiting a particular geographical area. Smith et.al, 1990 described that “fishery stock” were

  • The Economics of Overexploitation Revisited

    Creator:
    Grafton, R. Quentin, Kompas, Tom, and Hilborn, Ray
    Abstract:
    About 25% of the world's fisheries are depleted such that their current biomass is lower than the level that would maximize the sustained yield (MSY). Using methods not previously applied in the fisheries conservation context, we show in four disparate fisheries (including the long-lived and slow-growing orange roughy) that the...
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    Other
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    maximizing discounted economic profits may cause stock depletions, our results show there is a win-win: in

  • The management of transboundary marine resources : recent developments and elements of analysis

    Creator:
    Thébaud, Olivier
    Abstract:
    Under the new Law of the Sea, the definition of exclusive zones was considered an important first step towards improved management of the world's fisheries. However, one of the limits to the effectiveness of extended Jurisdictions was the problem of transboundary fish stocks. This question recently appeared at the centre...
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    Research Paper
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    , dolphinfish, oceanic sharks and cetaceans. The estimate of landings by straddling stock fisheries is given

  • Karl Popper's Organon and the world's fisheries; fish stock assessment as a pseudoscience, an inductivism that can bear no fruit

    Creator:
    Corkett, Christopher
    Abstract:
    If a scientist can predict the weather (poorly) Why cannot he predict fish yields (yet more poorly)? – a clerihew by Chris Corkett. Recent long term historical studies of commercial fisheries have pointed to a well established pattern of overfishing. Under the principle of transference – what is true in...
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    Research Paper
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    Portsmouth Proceedings KARL POPPER’S ORGANON AND THE WORLD’S FISHERIES; FISH STOCK ASSESSMENT AS A

  • Rents and Rents Drain in the Icelandic Cod Fishery

    Creator:
    Arnason, Ragnar
    Abstract:
    This paper estimates current resource rents being generated in the Icelandic cod fishery and compares them to the maximum sustainable attainable ones. For this purpose a simple aggregative model of the cod fishery is specified and empirically estimated. It is found that in spite of the cod stock being in...
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    Research Paper
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    the cod fishery is specified and empirically estimated. It is found that in spite of the cod stock

  • Habitat-destructive fishing practices

    Creator:
    Mikkelsen, Eirik
    Abstract:
    A model for studying how destructive fishing practices may affect commercial fish stocks through their effect on habitat is presented. It may be used both for renewable habitat-types, like eelgrass (Zostra marina) or sponges, and also practically non-renewable habitats like corals. The model demonstrates the trade-offs between using destructive and...
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    Other

  • Fisheries induced evolution. A review

    Creator:
    Reithe, Siv and Primicerio, Raul
    Abstract:
    Age and size at maturity are key life-history traits in a fish stock. At the individual level, age and size at maturity affect fecundity, growth and survival. At the population level these factors interact to affect the age and size distribution, the population dynamics and the productivity of the stock....
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    key life-history traits in a fish stock. At the individual level, age and size at maturity affect

  • Practical challenges of fisheries co-management on large water bodies: Lessons from southern Lake Malawi

    Creator:
    Njaya, Friday
    Abstract:
    Efficient management of small-scale fisheries resources demands adequate human and financial resources. This mainly relates to research and enforcement activities. Despite the resource constraint, the state has assumed the role of managing the fisheries resources. The emerging global trend, however, recommends cost recovery systems for sustainable fisheries management to achieve...
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    Presentation
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    forward Fisher migration and mobility due to nature of fishery and fish decline Boundary and scale

  • Stock and (possibly) path dependent technologies

    Creator:
    Arnason, Ragnar and Willmann, Rolf
    Abstract:
    According to conventional economic wisdom the economically more efficient technology will always outcompete the less efficient. This hypothesis has usually been taken to hold for the exploitation of common pool renewable natural resources such as fish stocks. This paper claims that, while this is not necessarily false, it may be...
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    Research Paper
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    Ragnar Arnason* IFFET 2008 Proceedings STOCK

  • Capacity Measurement and Policy Simulation of Fishery Industry in Japan

    Creator:
    Managi, Shunsuke
    Abstract:
    The expansion of fishing capacity is one of the most pressing problems facing many fisheries around the world. Excess capacity arises when a high number of vessels enter the fishery, and these vessels are employed to exploit the available fish stocks beyond a target level of yield. The lack or...
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    Other
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    Policy Simulation of Fishery Industry in Japan Author(s): Shunsuke managi Abstract: The