Index Catalog // ScholarsArchive@OSU

Faustmann in the Sea Optimal Rotation in Aquaculture

Creator:: Guttormsen, Atle G.
Abstract:: In this paper an extended version of the well-known Faustmann model is developed for solving the rotation problem in fish farming. Two particularly important aspects of the problem are emphasized: namely first, the possibilities for cycles in relative price relationships and second, the problem with limitations in release time for...
Resource Type:: Research Paper
Full Text:: f n w n w V w n k d w g w k w d n m n α+ + + + + + + + = − − + − =  − = − = − (8

Open Access Performance When Vessels Use Profit Goal Behavior

Creator:: Anderson, Lee G.
Abstract:: While most bioeconomic models assume that vessel operators use profit maximizing behavior, it is sometimes argued that participants use other operational goals. The purpose of this paper is to compare how vessel behavior, the bioeconomic equilibrium and the path to achieve it are changed if participants use profit goal behavior....
Resource Type:: Research Paper
Full Text:: Goal Behavior Lee G. Anderson College of Marine Studies University of Delaware Abstract. While most

Landings Fees Versus Individual Transferable Quotas: A Disaggregated Analysis

Creator:: Anderson, Lee G. and Hannesson, Rognvaldur
Abstract:: Weitzman (2002) has shown that with a stochastic growth function and uncertainty in estimating stock size, landing fees will be superior to quotas as a means of controlling fish harvest. Hannesson and Kennedy (2003) expand the analysis by considering variable availability of fish, random fish prices, and non-constant returns to...
Resource Type:: Research Paper
Full Text:: LANDINGS FEES VS. INDIVIDUAL TRANSFERABLE QUOTAS: A DISAGGREGATED ANALYSIS Lee G. Anderson, University of

Developing Case Studies for Fishery Management Training

Creator:: Jodice, Laura and Brown, Lew G.
Abstract:: The top business management educators consider case teaching to be a highly effective means for building critical decision-making skills in future managers. Although this method holds significant potential, it is not commonly used in fisheries management education and training. The Training Mangers for 21st Century Fisheries Initiative has identified development...
Resource Type:: Research Paper
Full Text:: Sylvia, 2003. Appendix F. Current Training Review, in Jodice, L.W., G. Sylvia, M. Harte, S. Hanna, and K

Experimental Testbedding Institutions for Tradable Fishing Allowances

Creator:: Anderson, Christopher and Sutinen, Jon G.
Abstract:: The objective of this paper is to illustrate that economic institutions matter, i.e., that different rules of trade present different incentives for bidding, asking and trading in new markets, and that these different incentives lead to different price discovery patterns which yield materially different outcomes. In a laboratory tradable fishing...
Resource Type:: Research Paper
Full Text:: , University of Rhode Island, cma@uri.edu Jon G. Sutinen, University of Rhode Island, jsutinen@uri.edu

Tuna price in relation to economic factors and sea surface temperature in Hawaii's market

Creator:: Pan, Minling and Pooley, Samuel G.
Abstract:: This study analyzes the main factors that affected seasonal variation of fresh tuna price through a statistical approach. The study concludes that seasonal variation in the volume of landings by Hawaii-based vessels is the predominant factor affecting seasonal variation in price for most of the tuna, but that price variation...
Resource Type:: Research Paper
Full Text:: Pan, National Marine Fisheries Services, Minling.Pan@noaa.gov Samuel G. Pooley, National Marine

Racing for Crabs: Difficult Management Options in California's Commercial Dungeness Crab Fishery

Creator:: Dewees, Christopher M., Sortais, Kristen, Krachey, Matthew J., Hackett, Steven C., and Hankin, David G.
Abstract:: Dungeness crab (Cancer magister) supports a valuable commercial fishery along the Pacific coast of North America. In recent decades the fishery has intensified significantly, with most crab landed during the first six weeks of the seven-month season. Management approaches to slow this intensifying and dangerous race have been elusive. This...
Resource Type:: Research Paper
Full Text:: Christopher M. Dewees, University of California, Davis and California Sea Grant Program, cmdewees@ucdavis.edu

Japanese IIFET Fisheries Meetings

Creator:: Dewees, Christopher M.
Resource Type:: Conference Proceeding
Full Text:: IIFET Fisheries Meetings Text and photos by Christopher M. Dewees Summer 2004 issue of the California

Artisanal fishing in the Galapagos

Creator:: Anderson, Lee G. and Wiley, Tracey L.
Abstract:: El Archipielago de Colon, more commonly known as the Galapagos Islands, is a province of Ecuador located about 600 miles off the coast of South America. It consists of approximately 45 volcanic islands (15 major and 30 minor) plus scores of smaller islets and rocks. The total land area is...
Resource Type:: Research Paper
Full Text:: ." Boletin Informativo del Instituto Nacional de Pesca 1(2). 4. Broadus, J. M, I- Pires, A. G, Gaines, C

The demand for salmon in the European Union : the importance of product form and origin

Creator:: Asche, Frank, Bjerndal, Trond, and Salvanes, Kjell G.
Abstract:: Tins paper addresses the importance of different product farms and their origin when considering the market structure in the European salmon market. The competition between Farmed Atlantic salmon and wild-caught pacific salmon has received some attention previously. However, this was before frozen Atlantic salmon emerged as an important product form...
Resource Type:: Research Paper
Full Text:: of product form and origin by Frank Asche, Trond Bjerndal and Kjell G. Salvanes Abstract

Empirical Analysis of the Transboundary Dynamics for Georges Bank Groundfish

Creator:: Soboil, Mark Lucas and Sutinen, Jon G.
Abstract:: This paper presents an empirical model of Georges Bank transboundary groundfish fishery, and reports results of a dynamic bioeconomic simulation used to evaluate the consequences of alternative management strategies for the multispecies fishery. Since the distribution of the stocks of the principal groundfish resources involves substantial movement and migration across...
Resource Type:: Research Paper
Full Text:: 60000 80000 100000 120000 140000 2000 2005 2010 2015 2020 2025 Year SS B (m t) US current

Virtual Populations: A New Arrow in The Quiver of Rights-Based Fishing

Creator:: Lee, Jungsam and Gates, John M.
Abstract:: Quota management systems (QMS) provide faith-based incentives for individual quota holders to conserve the resource voluntarily; quota holders expect the system to work and to be enforced and their expectations are usually realized despite imperfect incentives and significant enforcement burdens. Even with QMS there is never an individual incentive to...
Resource Type:: Research Paper
Full Text:: Virtual Populations: A new Arrow in the Quiver of Rights-Based Fishing? Jungsam Lee, John M. Gates1

Optimal Harvesting Time in Fish Farming with Heterogenous Population

Creator:: Gasca-Leyva, Eucario, Hernandez, Juan M., and Veliov, Vladimir M.
Abstract:: The optimal harvesting time in a fish farm is analyzed in the paper. Fish population is assumed to be heterogeneous with respect to weight, so a distributed parameter dynamic model is considered. Theoretical and numerical results are obtained and compared with the ones concerning homogeneous fish cultures only. The results...
Resource Type:: Research Paper
Full Text:: condition becomes f(x). x p(x) m(x)) (r g(x) p(x) x g(x) (x)p' ++=+ The expression in the left

Modeling the Asian Fish Sector: Issues, Framework, and Method

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:: A n a ly s is o f tech n o lo g ies P o licy a n a ly sis : • m a cro p o lic ie s • sec to

The Prestige Oil Spill and its Economic Impact on the Fishing Sector in Galicia (Spain)

Creator:: Garza-Gil, M. Dolores, Suris-Regueiro, Juan C., and Varela-Lafuente, Manuel M.
Abstract:: The sinking of the oil tanker the Prestige in November 2002 off the coast of Galicia in Spain had an important social, environmental and economic impact. The aim of this paper is to carry out an initial analysis of the costs relating to a halt in the activity of an...
Resource Type:: Research Paper
Full Text:: THE PRESTIGE OIL SPILL AND ITS ECONOMIC IMPACT ON THE FISHING SECTOR IN GALICIA (SPAIN) M

An Empirical Analysis of New Zealand's ITQ Markets

Creator:: Newell, Richard G., Sanchirico, James N., and Kerr, Suzi
Abstract:: Fisheries worldwide continue to suffer from the negative consequences of open access. In 1986, New Zealand responded by establishing an individual transferable quota (ITQ) system that by 1998 included 33 species and more than 150 markets for fishing quotas. We assess these markets in terms of trends in market activity,...
Resource Type:: Research Paper
Full Text:: Richard G. Newell, Resources for the Future, Washington, DC James N. Sanchirico, Resources for the Future

Harvest Strategies for a Transboundary Resource: Georges Bank Haddock

Creator:: Thunberg, Eric M., Fulcher, Charles M., and Brodziak, Jon K. T.
Abstract:: The eastern Georges Bank haddock resource is shared and managed by the U.S. and Canada through a transboundary resource sharing agreement. This agreement includes an annual process for joint stock assessment, setting of a TAC, and harvest shares for each country. The resource sharing agreement provides a mechanism for establishing...
Resource Type:: Research Paper
Full Text:: Portsmouth Proceedings HARVEST STRATEGIES FOR A TRANSBOUNDARY RESOURCE: GEORGES BANK HADDOCK Eric M

Evolution of an FMP: The Atlantic Herring Fishery Management Plan

Creator:: Cho, Juang-Hee and Gates, J. M.
Abstract:: Keywords: Theoretical and Empirical Bio-Economic Modelling, Fisheries Economics
Resource Type:: Research Paper
Full Text:: elsewhere (Cho and Gates, 1999). THEME G: Theoretical and Empirical Bio-Economic Modelling EVOLUTION OF

How can Community-Based Management Improve an Outcome? The Effects of Revenue Sharing and Social Capital in a Fishery

Creator:: Tegawa, Mihoko, Uchida, Hirotsugu, and Anderson, Christopher M.
Abstract:: We empirically disentangle the efficiency mechanism of revenue sharing, in which a group of harvesters shares catch and/or revenue among members of a fishery cooperative, by incorporating the influence of social capital. In addition to each of revenue sharing and social capital influencing a fishery independently we hypothesize social capital...
Resource Type:: Presentation
Full Text:: . For each iteration, a. Form a sample of G clusters by forming either eit = eit with p = 0.5 or eit

Bioeconomic assessment of alternative cold-water aquaculture species: early life stages

Creator:: Dalton, Timothy J. and Waning, Kate M.
Abstract:: Despite several factors favoring the development of haddock (Melanogrammus aeglefinus) aquaculture, there is virtually no economic information on its feasibility. This paper uses bioeconomic simulation techniques to conduct an ex-ante impact assessment of the early life stages in haddock production. Using an economic engineering methodology, early life stages are modeled...
Resource Type:: Research Paper
Full Text:: aquaculture species: early life stages Timothy J. Dalton1* Kate M. Waning2 Abstract Despite several factors

Investigation of Socioeconomic Characteristics of Agricultural Communities in Relation to the Development of Culture-Based Fisheries in Non-Perennial Reservoirs of Sri Lanka

Creator:: Kularatne, Mohottala G., Amarasinghe, Upali S., De Silva, Sena S., and Jayasinghe, U. Asanka D.
Abstract:: Participation of community groups is one of the main requirements for culture-based fisheries (CBF) in non-perennial reservoirs of Sri Lanka. Homogeneity of the group characteristics facilitates to arrive at collective decisions. And as such can be considered as positive feature for development of CBF. In this paper an attention made...
Resource Type:: Research Paper
Full Text:: . Mohottala G. Kularatne,University of Kelaniya, Sri Lanka. Kule_econ@kln.ac.lk Upali S. Amarasinghe

Considerations for TAC Targets in a Single Gear, Multiple Species Fishery

Creator:: Nam, Jongoh, Ryu, Jeong-Gon, and Gates, John M.
Abstract:: This paper provides a Total Allowable Catch (TAC) assessment model for a single gear, multi-species fishery in South Korea. To estimate appropriate Allowable Biological Catch (ABC) of mackerel and jack mackerel caught by the large purse seine fleet in the territorial waters of South Korea, the model uses an extended...
Resource Type:: Research Paper
Full Text:: Fundy, N. Amer. J. Fish. Manage. 5: 91-104. 20. Sissenwine, M. P., Shepherd, J. G., 1987. An

Effect of pyridine triphenyl borane (KH101) on the reproduction of Calanoid Copepod, Acartia omorii Bradford

Creator:: Hossain, Md. Khaled, Ishimaru, Takashi, and Takeda, Seiichi
Abstract:: Currently documented that pyridine triphenyl borane (KH101) is possible to use as an alternative of tributyltin based antifouling biocide in coastal and marine environment. But its impact on marine life especially on smaller zooplankton is so far unknown. The present study was conducted to determine the effect of KH101 on...
Resource Type:: Research Paper
Full Text:: (250ml glass jar) g collection tank. mass culture system. Temperature ns at the time of sample

Individual Transferable Quotas in a Household Economy: Will The System Work?

Creator:: Uchida, Hirotsuga, Wilen, James E., and Larson, Douglas M.
Abstract:: This paper analyzes the behavior of fishing households under individual transferable quotas (ITQ) system based on Singh, Squire and Strauss household model. ITQ system is sought to be the optimal fishery management regime in terms of economic efficiency. However, preceding theoretical analyses only considered implementing ITQ to a well established...
Resource Type:: Research Paper
Full Text:: , wilen@primal.ucdavis.edu Douglas M. Larson, University of California, Davis, larson@primal.ucdavis.edu

Efficiency and Capacity of Fully Exploited Fisheries Managed Using Vessel Catch Limits Combined with Effort Restrictions

Creator:: Castilla Espino, David, García Ordaz, Félix, and Sharp, Basil M. H.
Abstract:: A wide range of fisheries are managed using vessel catch limits combined with different kinds of effort restrictions. This management framework is expected to have desirable consequences for the bioeconomic sustainability of fisheries. When appropriately implemented this approach produces outcomes that are similar to those associated with individual fishing quotas....
Resource Type:: Research Paper
Full Text:: @dehie.uhu.es Félix García Ordaz, MEMPES-AEA, Universidad de Huelva, felix@uhu.es Basil M. H. Sharp

Management Strategies in a Capture Fishery: Experience Under Community Based Fisheries Approach

Creator:: Alam, S. M. Nazmul, Begum, Anwara, and Alamgir, Md.
Abstract:: Ashurar beel, an open perennial capture fishery of 400 ha, and located in north west Bangladesh was familiarized as indiscriminant and uncontrolled fishing by in-migrant people before being brought under Community Based Fisheries Management project in 1996. Caritas, a non-government organization and a lead partner of the project undertakes various...
Resource Type:: Research Paper
Full Text:: APPROACH S. M. Nazmul Alam, Anwara Begum, and Md. Alamgir Caritas Fisheries Program, 1/C, 1/A

A precautionary approach to aquaculture: the incorporation of risk and incertainty in the feasibility analysis of shrimp hatchery in Mexico

Creator:: Martinez-Cordero, F. J., Seijo, J. C., and Juarez, L. M.
Abstract:: Sustainable aquaculture can be achieved when risk and uncertainly are incorporated in the analysis of the activity. This paper presents a precautionary approach to the feasibility analysis of a project for a commercial hatchery, applying decision theory. Two production scenarios were assessed, continuous and periodic, the later a combination of...
Resource Type:: Research Paper
Full Text:: . Martinez-Cordero CIAD-Unidad Mazallan, Mexico J.C. Seijo CINVESTAV-IPN-Merida. Mexico L. M. Juarez GMSB

Management Plan for Coastal Resources in the North Coast of Central Java, Indonesia

Creator:: Setiarto, Agung, Samson, Stepanus A., Mingkid, Winda M., Watanabe, Seiichi, and Yokota, Masashi
Abstract:: An integrated coastal management plan has become an increasingly important tool to accommodate coastal resource utilization that is multisectoral in nature. The idea of adopting this strategy comes from the fact that coastal resources consist of various valuable assets that should be utilized in a sustainable fashion. This paper emphasizes...
Resource Type:: Research Paper
Full Text:: SETIARTO1,2), asetiarto@yahoo.com Stepanus A. Samson1,3), Winda M. Mingkid1,4), Seiichi Watanabe1), Masashi

17β-estradiol has no effect on reproduction success of calanoid copepod, Acartia omorii

Creator:: Hossain, Md. Khaled
Abstract:: The natural estrogen 17β-estradiol (E2) is responsible for the endocrine disruption and also has potential effect on the reproduction of vertebrate. However, its effect on invertebrate reproduction has scarcely been studied. The present study was conducted to determine the effect of E2 on survival, egg production and egg hatch of...
Resource Type:: Research Paper
Full Text:: at different concentration of E2 (0.001, 0.01, 0.1, 1, 10 and 100 g/L) with food (Isochrysis sp

Stock Enhancement of Sea Urchin (Tripneustes gratilla) in Northwestern Luzon, Philippines : A Management Strategy

Creator:: Ungson, Julita
Abstract:: Two successful cases of sea urchin enhancement activities were considered using the experiences of two neighboring provinces in Ilocos Sur and Ilocos Norte, both located in Northwestern Luzon, Philippines. One case was done at the coastal waters of Nagabungan Bay in Pasuquin, Ilocos Norte, which experienced a decline in sea...
Resource Type:: Research Paper
Full Text:: m-2 fishing area. The reseeding project was done in 2002. One thousand pieces of sea urchin

Culture of Tiger Shrimp Peneaus monodon Fabricius Using Probiotics in Brackish Water Pond at Perak, Malaysia

Creator:: Abu Hena, Mustafa Kamal, Hishamuddin, O., Misri K., and Faridah A.
Abstract:: The growth of tiger shrimp P. monodon and physicochemical factors of pond water and sediment were observed in tropical climate using bacterial products called probiotics. No improvement in shrimp growth and water quality was noted compare to other reported studies. The organic matter (OM) and total sulfur (TS) of pond...
Resource Type:: Research Paper
Full Text:: PENAEUS MONODON FABRICIUS USING PROBIOTICS IN BRACKISH WATER PONDS IN PERAK, MALAYSIA Abu Hena M. K

Impact of infectious diseases on sustainability of cultured fisheries- understanding relationship between host, pathogen and environment

Creator:: Katoch, R. C., Verma, Subhash, Sharma, Mandeep, Pathania, Deepak, Sharma, Vinod, and Soneja, Pooja
Abstract:: Despite current advances in aquaculture practices, microbial diseases are still being increasingly incriminated as a significant constraint to regulate sustainable aquaculture production, trade and economic development of this sector. A systematic research to identify various infections which induce morbidity and mortality among trout and carps was undertaken in Himachal Pradesh,...
Resource Type:: Research Paper
Full Text:: in vitro, whereas ampicillin, erythromycin and penicillin-G were least effective. The findings of

Analyse économique d'une nouvelle technique d'élevage de crevettes en cages flottantes au Brésil

Creator:: Paquotte, Philippe
Abstract:: Dans le cadre de la coopération Franco-Brésilienne, l'IFREMER, l'Etat de Bahia et la société Littoral Sul Maricultura ont développé une nouvelle technique d'élevage de crevettes pénéides (Penaeus vannamei) en utilisant des cages flottantes. Après trois années de mise au point, cette technique s'est avérée intéressante sur plusieurs aspects. La productivité...
Resource Type:: Research Paper
Full Text:: Series, pp. 66-75. Paquotte, P., Chim, L., Martin, J.-L.M., Lemos, E., Stern, M. et Tosta, G., à

Population Dynamics of the Tigertooth croaker, Otolithes ruber in the Persian Gulf

Creator:: Niamaimandi, Nassir
Abstract:: Growth parameters and mortality of the tigertooth croaker (Otolithes ruber) were estimated from length frequency data collected during trawl surveys in the Persian Gulf (Bushehr waters) from 1997-1998. LFDA and FiSAT Programs were used for data analyses. Growth parameters were estimated as L∞ = 58 cm and K = 0.8...
Resource Type:: Research Paper
Full Text:: in M=1.24 year-1. Biomass estimation of swept area survey in 1994 was applied to calculate MSY. The

Can Right-based Fisheries Management protect Coastal Sustainable Livelivehoods, the case of Ocean View, South Africa?

Creator:: Isaacs, Moenieba
Abstract:: This paper intends to ascertain whether the micro-commercial initiative of Marine and Coastal Management Department (M&CM) introduced in 2001 is contributing to the sustainable livelihoods of fishers in the community of Ocean View. Ocean View is located in the greater Cape Town metropole and was created by the Group Areas...
Resource Type:: Research Paper
Full Text:: Space: The Challenge of Poverty and Democracy in South Africa. IDASA. Cape Town. Branch, G. M

Herring - An alternative to decreasing Baltic cod quotas?

Creator:: Klepper, Rainer and Lasch, Rolf
Abstract:: The very restrictive quotas of cod in the Baltic Sea are a strong force for searching alternatives. Since 1996 for instance, the cod quota for the German fishery was reduced from 22 000 t to 13 000 t in the year 2001. And further cuts took place in 2002. However,...
Resource Type:: Research Paper
Full Text:: a FAIR-Project. It has now been adapted to the conditions of Baltic herring fishery with 26.5 m

Reference Points for Vulnerable Fish Species Based on Bioeconomic Age-Structured Models: An Approach for Totoaba macdonaldi

Creator:: Rodríguez-García, Oswaldo Uriel, De Anda-Montañez, Juan Antonio, Valenzuela-Quiñonez, Fausto, Hernández-Flores, Alvaro, Salas-Márquez, Silvia, and María Da-Rocha, José
Abstract:: Management objectives of vulnerable fish species must focus on maintaining healthy population status. Hence, reference points should be constrained to ensure recruitment. We assessed bioeconomic reference points for the totoaba (Totoaba macdonaldi), an endemic fish to the Gulf of California, reaching lengths of 2 m and 25 years. Totoaba fishing...
Resource Type:: Presentation
Full Text:: Spawning aggregations 4 Introduction Fishing Mortality (F) 5 Big sized: TLmax ≈ 2 m Photo

From Producers Sales Organisations to Global Marketing Conglomerates; How the Icelandic Seafood Exporting Companies Changed

Creator:: Klemensson, Olafur and Knutsson, Ogmundur
Abstract:: For decades, three producers-organisations, Icelandic Freezing Plants, Iceland Seafood and Union of Fish Producers (SIF) took care of export and marketing activities of ground fish products from Iceland. These organisations had a virtual monopoly through export licences in exporting frozen and salted seafood product till late 1980´ and early 1990´....
Resource Type:: Research Paper
Full Text:: limited liability companies. Through M&A the outcome resulted in two powerful production and marketing

Value added in Norwegian Fisheries; The Creation, the distribution, and value added strategies

Creator:: Trondsen, Torbjørn and Vassdal, Terje
Abstract:: Maximizing profit and value added are central objectives when fishing rights are distributed. Financial profitability on a company level traditionally measures the return on total assets. Value added on the national level is the net (or gross) national product, and is the total profit of investments and wages and salaries...
Resource Type:: Research Paper
Full Text:: – 2004, from about 51 % to about 44 %. For the total period the coastal fleet with length less that 28 m

The Role of Women in the Galician Fisheries Sector: Towards its Recognition in European Statistics

Creator:: Garcia Negro, M.C., Villasante, C.S., and Carballo Penela, A.
Resource Type:: Presentation
Full Text:: F ra n c e G a lic ia D e n m a rk N e th e rla n d s Ire la n d S w e d e n Ita ly F

Self-Imposed Catch Shares by French Producers Organizations

Creator:: Guyader, Olivier, Metz, Sébastien, Macher, Claire, Merzereaud, Mathieu, Daurès, Fabienne, and Le Floch, Pascal
Abstract:: Since 2006, French quotas are shared out into annual catch entitlements per producer organizations (PO) according a stable allocation key. On this basis, PO’s have imposed catch shares to their own members but allocation and management rules are heterogeneous between PO’s. The objective of the paper is i) to assess...
Resource Type:: Presentation
Full Text:: fr e m e r. fr lf re m e r Self-imposed catch shares by French producers organizations O

Exploring fisheries dynamics according to different quota governance mechanisms: application to the Bay of Biscay sole fishery

Creator:: Bellanger, Manuel, Merzereaud, Mathieu, Guyader, Olivier, and Macher, Claire
Abstract:: Integrating governance mechanisms into bio-economic modeling tools is a key challenge for the assessment of fisheries management plans. Impact assessments are carried out without considering real management options and institutional context. Only fishing mortality changes and their impact on fish stocks are considered. The Bay of Biscay sole fishery offers...
Resource Type:: Presentation
Full Text:: Individual quotas Package of 2 t by vessel OPOB Large gillnetters<18 m Individual quotas Package of 18 t

Modelling the Potential Fisheries Impacts on the Trophic Structure of Moreton Bay, Australia

Creator:: Fondo, Esther, Skilleter, Greg, and Chaloupka, Milani
Abstract:: Tropical and sub-tropical coastal and estuarine ecosystems are complex, dynamic systems that are important in providing numerous ecological services. Globally, these ecosystems are threatened by anthropogenic activities and climate change and these, together with their complex nature, makes management of tropical and sub-tropical coastal and estuarine ecosystems difficult. Ecosystem models...
Resource Type:: Presentation
Full Text:: Impacted groups Im p a c ti n g g ro u p S ea b ir d s D o lp h in s P ra w n s M ac ro b

Productivity Growth in the Shrimp Farming Industry of Bangladesh: A Luenberger Productivity Indicator Approach

Creator:: Jahan, Hasneen and Ancev, Tihomir
Abstract:: Shrimp aquaculture is one of the fastest growing economic activities in the coastal areas of Bangladesh and earns substantial foreign exchange for the country. However, the environmental degradation is a major concern for the sustainable development of this industry. This paper studies the tradeoffs between the economic and environmental performance...
Resource Type:: Presentation
Full Text:: 0 50 100 150 200 250 300 350 Q ty i n M T M il li o n $ Year Shrimp (V) Fish(V

Assessing the Value and Role of Seafood Traceability from an Entire Value-Chain Perspective

Creator:: Sylvia, Gil, Sterling, Brian, Gooch, Martin, Dent, Benjamin, Marenick, Nicole, and Miller, Alex
Abstract:: The traceability practices of 48 seafood businesses were assessed as part of an evaluation of nine global seafood value chains (from harvest to retail). The research was conducted through direct interviews and written surveys in order to assess the reasons why traceability systems were used to strengthen business performance. The...
Resource Type:: Presentation
Full Text:: B Business C 0 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 I H G F E D C B A N u m b e r o f

The Dynamic Role of Sablefish in a Mutlispecies, Multigear IFQ Fishery

Creator:: Holland, Dan and Steiner, Erin
Abstract:: Individual fishing quota (IFQ) systems are typically expected to increase the profitability of a fishery and improve sustainability by ensuring catches remain within quotas. They can also have important distributional and ecological implications that result from shifts in catch and effort between different gears, regions, and habitats. In multispecies fisheries...
Resource Type:: Presentation
Full Text:: g s ( m ill io n s o f lb s ) 0 1 2 3 4 5 6 North South 2012 0 1 2 3 4 5 6

Indicators for Ecosystem Externalities in Fishing

Creator:: Ravn-Jonsen, Lars, Andersen, Ken H., and Vestergaard, Niels
Abstract:: Ecosystem externalities arise when one use of an ecosystem affects its other uses through the production functions of the ecosystem. We use simulations from a size-spectrum ecosystem model to investigate the ecosystem externality created by fishing of multiple species. The model is based upon general ecological principles and is calibrated...
Resource Type:: Presentation
Full Text:: spectrum model Two dimensions: Size (mass) of individual fish 0.001 g—100 kg Asymptotic size 4 g—100 kg

Applying Principles from Economics to Improve the Transfer of Ecological Production Estimates in Fisheries Ecosystem Services Research

Creator:: Errend, Melissa
Abstract:: Ecosystem services (ES) provide a pathway to connect ecosystem processes to human well-being. Ecosystem-based fisheries management can utilize the ecosystem service framework to assess trade-offs of actions such as restoration and gear restrictions, or environmental changes such as ocean acidification and warming, and sea level rise. However, due to a...
Resource Type:: Presentation
Full Text:: E s ti m a te s (g C · m -2 · y r- 1 ) Global Variability in Annual Benthic

Trade, Subsistence Consumption, Compensation and Resource Management: How Are They Related?

Creator:: Emami, Ali, Johnston, Richard S., and Mikesell, Raymond F.
Abstract:: In recent years, considerable attention has been given to the effects of removing trade restrictions on natural resource utilization and on poverty, especially in developing countries. Our paper adds to the growing body of conceptual work to show conditions under which a developing country that, in isolation, is unable to...
Resource Type:: Research Paper
Full Text:: subsistence requirements for that good, 2P 1P H OM ′ *PH P′′′ G oo d H j d M Good

Pulse-Seasonal Harvesting Via Nonlinear Delay Differential Equations and Applications in Fishery Management

Creator:: Idels, Lev V. and Ou, Beiyan
Abstract:: We study the combined effects of periodically varying carrying capacity and survival rates on the fish population in the ocean (sea). We introduce a new delay differential equation model with a control parameter which describes how fish are harvested. We consider a predation function as the function of the delayed...
Resource Type:: Research Paper
Full Text:: Proceedings For F(t) ≡ 0, r(t) ≡ r, g(t) = t, m(t) ≡ m, K(t) ≡ K, equation (3) is the Beverton-Holt type

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