Index Catalog // ScholarsArchive@OSU

Creator:: Eide, Arne
Abstract:: This paper investigates the application of cellular automata (CA) models in bioeconomic studies involving varying biological growth and area distribution. A simple 2D continuous cellular automata (CCA) model is presented and incorporated in a fish harvest model based on standard assumptions of economic rational behaviour by individual decision makers. The...
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Full Text:: Microsoft Word - Document1 Title: A bioeconomic MPA study

Creator:: Tomberlin, David and Woodward, Richard
Abstract:: A major simplification in bioeconomic models is that the model parameters and functional forms are assumed known. In fisheries, the failure to capture model uncertainty can easily cause overconfidence in model outputs and resultant policy recommendations. Although fisheries modelers regularly assume rather complete knowledge of the systems they study, in...
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Full Text:: Uncertainty in Bioeconomic Models Authors: David Tomberlin, NOAA Fisheries (USA) Richard Woodward

Creator:: Foley, Naomi and Armstong, Claire
Abstract:: This paper shows that the importance of fish habitat depends in part on the management of the fishery. Two cases of cold water coral - fisheries interactions are studied in a bioeconomic model setting: Norwegian and Icelandic redfish fisheries. The two countries have applied different types of management; Norway’s management...
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Full Text:: coral - fisheries interactions: Bioeconomic modelling comparing Norway & Iceland's redfish fisheries

Creator:: Pierre Nolasque, Meke Soung
Abstract:: Cameroon is a country of Central Africa, with 402 km coastline where occur intense industrial and small scale marine, multispecies/gears fishing activities. Fishing accounts for 5.2% of GDP in the primary sector and 1.7% of GDP. The Ministry of Livestock’s, Fisheries and Animal Industries is responsible of the fisheries policy...
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Full Text:: THE SUSTAINABLE MANAGEMENT OF MARINE FISH RESOURCES IN CAMEROON: A BIOECONOMIC ANALYSIS OF THE TRAWL

Creator:: Hoshino, Eriko, Milner-Gulland, E. J., and Hillary, Richard
Abstract:: Short-lived fisheries stocks are subject to large fluctuations in abundance and respond rapidly to many factors including changes in oceanographic conditions, biological interactions and fishery exploitation. Management of such species requires a flexible, adaptive framework that responds rapidly to a changing environment, although such schemes are rarely operationalized. In this...
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Full Text:: Bioeconomic adaptive management procedures for short-lived species: A case study of Pacific saury (Cololabis

Creator:: Diekert, Florian
Abstract:: The central objective of fishery management is to ensure the sustainability and profitability of the resource base. The importance of the fish stock's age-structure is increasingly recognized in economics and ecology. Still, current policies predominately rely on the aggregate biomass. We carefully calibrate a detailed model on the North-East Arctic...
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Full Text:: surrounding bio-economic simulations. Our study provides an increased understanding of the determinants of

Creator:: Nguyen, Viet Thanh
Abstract:: The objective of this paper is to study the economic management of Eastern Baltic cod (Gadusmorhua) under the influence of nutrient enrichment. Average nitrogen concentration in the spawning areas during the spawning season of cod stock is chosen to be an indicator of nutrient enrichment. The optimal cod stock is...
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Full Text:: Microsoft Word - BIOECONOMIC MODEL OF EASTERN BALTIC COD

Creator:: Quaas, Martin and Voss, Rudi
Abstract:: Fishery scientists distinguish between recruitment overfishing (i.e. suboptimally low reproduction because the spawning stock is fished down) and growth overfishing (i.e. catching fish at an inefficiently young age). We use an age-structured bio-economic model to study how important the (endogenous) recruitment is compared to the growth of individual fish under...
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Full Text:: -economic model to study how important the (endogenous) recruitment is compared to the growth of individual

Creator:: Wallner, Sieglind and Torre-Castro, Maricela de la
Abstract:: Globally, alterations of marine food webs due to overfishing of species at high trophic levels are leading to unpredictable changes in coastal ecosystems. In parts of the Western Indian Ocean, increasing abundances of sea urchins (particularly Tripneustes gratilla) have been observed. Sea urchins’ grazing intensity on seagrass beds is generally...
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Full Text:: -reaching impacts on the coastal environment and for local communities. The focus of this interview study

Creator:: Poudel, Diwakar
Abstract:: Acknowledging that there is stochasticity in the dynamics of a fish stock, one has a situation where the fish stock can collapse even without any fishing pressure. To derive the probability of collapse, we suggest a Monte Carlo approach because it is relatively simple model and can capture complex stock...
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Full Text:: . In this study, we demonstrate an approach to quantify stochasticity in fish stock dynamics, derive

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