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Creator:: Doole, Graeme J. and Alexander, Robert R.
Abstract:: Annual recruitment of the New Zealand longfin eel (Anguilla dieffenbachii) has decreased by around 75 percent since heavy levels of commercial fishing began in the early 1970s. Given the unsustainability of existing regulatory policy, a deterministic multiple-cohort bioeconomic model is developed and applied to this system to gain insight into...
Resource Type:: Research Paper
Full Text:: , Massey University, Private Bag 11 222, Palmerston North, New Zealand ROBERT R. ALEXANDER Department of

Creator:: Ulrich, Clara, Dolder, Paul, Hoff, Ayoe, Kempf, Alexander, Poos, Jan-Jaap, Rindorf, Anna, and Vermard, Youen
Abstract:: When different species are caught together in mixed-fisheries but are managed under single-species management plans may lead to TACs of some species being exhausted before other. This leads to conservation and socio-economic problems in fisheries, where agreed harvest levels cannot be obtained for some stocks, while other stocks may be...
Resource Type:: Presentation
Full Text:: Paul Dolder (UK), Ayoe Hoff (DK), Alexander Kempf (GE), Jan-Jaap Poos (NL), Anna Rindorf (DK), Youen

Creator:: Flaaten, Ola
Abstract:: The aim of this paper is to assist teaching undergraduate students how to analyse the issue of fish stock investment. The mathematical prerequisites are a basic knowledge of calculus. Both discrete and continuos time frameworks are used. To fish down or to build up a fish stock takes time, and...
Resource Type:: Research Paper
Full Text:: ). Two Canadian researchers, a mathematician - Colin W. Clark and an economist - Gordon R. Munro

Creator:: Bilodeau, Francis, Wilson, James R., and Fréchette, Marcel
Abstract:: A bio-economic model, based on Faustmann rotation, was developed to analyze the relevance of removing thinning activities which are part of the dominant technology used in blue mussel production in Canada. Removing these density control activities (thinning) seemed a profitable option to producers. It was thought that this collector line...
Resource Type:: Research Paper
Full Text:: , francis_bilodeau@hotmail.com James R. Wilson, UQAR, james_Wilson@uqar.qc.ca Marcel Fréchette, DFO-MPO, FrechetteM

Creator:: Syahidah, Dewi, Prijono, Agus, Sutarmat, Tatam, Sukayasa, Putu, and Ejasta, I Km.
Abstract:: Fry production of milkfish (Chanos chanos), which is called “Milkfish Backyard Hatchery” or MBH in Gerokgak District, North of Bali had been famous since 1995. The coastal area of the district is the largest place for backyard hatcheries. The research was conducted in Gerokgak District in the year of 2004....
Resource Type:: Research Paper
Full Text:: driest month < 3.94– r/25; whereas r is the average of annual rainfall month (in inch). The milkfish

Creator:: Wachsman, Yoav
Abstract:: Coastal nations can impose conditions of use on foreign fishing firms that operate in their Exclusive Economic Zone. We develop a game-theoretical model in which a fishery owner maximizes the revenue that it collects from firms that operate in its EEZ by charging them a fishing fee. We find that...
Resource Type:: Research Paper
Full Text:: two- stage game. In the first stage of the game the owner selects a fishing fee. The fishing fee, r

Creator:: Dey, Madan M., Briones, Roehlano M., and Ahmed, Mahfuzuddin
Abstract:: The paper presents a detailed approach to modeling supply and demand of the Asian fish sector. It discusses the salient features of the fish sector in Asian countries that need to be incorporated in a comprehensive model of fish supply and demand, as well as the usefulness of supply and...
Resource Type:: Research Paper
Full Text:: Id en tifica tio n o f sh o ck v a r ia b les B a sic m o d e l O v er a ll im p a ct D

Creator:: Rust, Steven, Yamazaki, Satoshi, and Jennings, Sarah
Abstract:: Overcapacity remains a major issue in world fisheries. The specific conditions that give rise to overcapacity in the pure open access fishery remain unclear, however the non‑malleability of capital is widely regarded as a necessary condition for the accumulation of excess harvesting capacity. In the process of fisheries collapse known...
Resource Type:: Presentation
Full Text:: classes of capital (see Clark, Clarke and Munro, 1979): ‒ perfectly non-malleable capital (γ=0, It≥0

Creator:: McWhinnie, Stephanie and Otumawu-Apreku, Kofi
Abstract:: We investigate the effects of incorporating a fixed input on equilibrium profits and biomass. We first set up a theoretical model with an input that is fixed in the short-run (vessel size) but that can be used with a variable input at suboptimal capacity. We use this model to get predictions for...
Resource Type:: Presentation
Full Text:: Vessels are a key, firm-level input and are fixed with a heavy initial outlay (Clark et al 1979; Smith

Creator:: Kasperski, Stephen and Himes-Cornell, Amber
Abstract:: Over recent years, fisheries managers have been going through a paradigm shift to prioritize ecosystem-based management. With this comes an increasing need to better understand the impacts of fisheries management decisions on the social well-being and sustainability of fishing communities. This paper summarizes research aimed at using secondary data to...
Resource Type:: Presentation
Full Text:: 4 Pelican 0 1 0 1 1 1 0 4 Petersburg 1 1 0 1 1 0 0 4 Port Alexander 0 1 0 1 1 1 0 4 Port Lions 0

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