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- Measurement of productivity and capacity in renewable resource industries (6)
- Regulation of renewable resource industries (6)
- Bio-economic modeling and cost-benefit analysis (4)
- Fisheries (3)
- Danish vessels (2)
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- Plant capacity (2)
- Vessel decommissioning (2)
- Bio-economic model (1)
- Capacity (1)
- Convexity (1)
- Cost–benefit Analysis (1)
- Danish fishing fleet (1)
- Data envelopment analysis (1)
- Directional distance function (1)
- Double principal-agent problems (1)
- EU fishery (1)
- Economic capacity (1)
- Efficiency (1)
- Entry and exit incentives (1)
- European Union (1)
- Evaluation tool (1)
- Fishing capacity (1)
- Fishing gear (1)
- Fleet adjustment (1)
- Illegal landings (1)
- Imperfect information (1)
- Industry planning (1)
- Insurance value (1)
- MAGP (1)
- Malmquist productivity index (1)
Articles 1 - 17 of 17
Full-Text Articles in Social and Behavioral Sciences
Principal-Agent Problems In Fisheries, Niels Vestergaard
Principal-Agent Problems In Fisheries, Niels Vestergaard
Niels Vestergaard
No abstract provided.
Bio-Economic Evaluation Of Implementing Trawl Fishing Gear With Different Selectivity, Lone Grønbæk Kronbak, J. Rasmus Nielsen, Ole A. Jørgensen, Niels Vestergaard
Bio-Economic Evaluation Of Implementing Trawl Fishing Gear With Different Selectivity, Lone Grønbæk Kronbak, J. Rasmus Nielsen, Ole A. Jørgensen, Niels Vestergaard
Niels Vestergaard
The paper develops a biological-economic evaluation tool to analyse the consequences for trawl fishers of implementing more selective fishing technologies. This is done by merging a dynamic biological population model and an economic cost–benefit evaluation framework to describe the consequences for the fish stocks, fishermen and society. The bio-economic evaluation is applied to the case of the Danish trawl fishery in Kattegat and Skagerrak, which experiences a high level of discards and bycatches of several species. Four different kinds of selectivity scenarios are evaluated in comparison with a baseline. The results from the evaluation are indicators for the consequences on …
Ecological Benchmarking To Explore Alternative Fishing Schemes To Protect Endangered Species By Substitution : The Danish Demersal Fishery In The North Sea, Niels Vestergaard, Jens Kjærsgaard, Kristiaan Kerstens
Ecological Benchmarking To Explore Alternative Fishing Schemes To Protect Endangered Species By Substitution : The Danish Demersal Fishery In The North Sea, Niels Vestergaard, Jens Kjærsgaard, Kristiaan Kerstens
Niels Vestergaard
The cod stock in the North Sea is threatened by overexploitation. To recover this fishing stock, pressure needs to be reduced. This implies that catch compositions with small amounts of cod are preferred by public policy makers. The present analysis assesses the technological efficiency of fishing trips in terms of the substitution possibilities away from cod by considering landings of cod as an undesirable output. A conservative non-parametric frontier technology approach imposing minimal assumptions and based on directional distance functions is applied to explore alternative fishing activities for Danish gill netters operating in the North Sea with the goal of …
Comparative Evaluation Of Fisheries Policies In Denmark, Iceland And Norway: Multispecies And Stochatic Issues, Sveinn Agnarsson, Ragnar Arnason, Karen Johannsdottir, Lars Ravn-Jonsen, Leif K. Sandal, Stein I. Steinshamn, Niels Vestergaard
Comparative Evaluation Of Fisheries Policies In Denmark, Iceland And Norway: Multispecies And Stochatic Issues, Sveinn Agnarsson, Ragnar Arnason, Karen Johannsdottir, Lars Ravn-Jonsen, Leif K. Sandal, Stein I. Steinshamn, Niels Vestergaard
Niels Vestergaard
The aim of the project has been twofold: 1) to quantify the stochastic process producing this uncertainty for certain important fish stocks and 2) to further develop a method for determining optimal harvest quotas within the framework of a multi-species model, and, by this, implement the model in practice for the purpose of performing a comparative study of the fisheries in three Nordic countries: Denmark, Iceland and Norway. The harvesting (total allowable catch) policies for the cod and cap-elin/herring fisheries in these countries are compared. Indicators for stock overexploitation and harvest overexploitation are developed.
Vessel Decommissioning In Danish Fisheries, Erik Lindebo, Niels Vestergaard
Vessel Decommissioning In Danish Fisheries, Erik Lindebo, Niels Vestergaard
Niels Vestergaard
The fishing capacity issue has lately received considerable global attention. The application of an embracing structural policy in the European Union (EU) during the 1980s and 90s has indicated the desire of fisheries managers and administrators to rebalance the level of capacity of fishing fleets with resource availability. A previous study is drawn upon to shed light on the impact of vessel decommissioning on the Danish fleet during 1987-93. The Danish administration has since continued to structurally adjust the national fishing fleet under the guidance of the EU structural policy framework. The official capacity figures corresponding to EU multiannual guidance …
Revenue-Based Capacity Utilisation Measures And Decomposition: The Case Of Danish North Sea Trawlers, Erik Lindebo, Ayoe Hoff, Niels Vestergaard
Revenue-Based Capacity Utilisation Measures And Decomposition: The Case Of Danish North Sea Trawlers, Erik Lindebo, Ayoe Hoff, Niels Vestergaard
Niels Vestergaard
In fisheries, capacity analysis has largely been limited to measuring physical capacity, defined as the maximum amount of output that can be produced per unit of time, given existing plant and equipment and unrestricted availability of variable inputs. An economic measure of capacity can be defined as the maximum revenue attainable for the given fixed inputs, using relevant outputs and output prices. This paper examines these two approaches to capacity by applying data envelopment analysis to physical and economic input/output data for Danish North Sea trawlers. The economic and physical measures are compared and contrasted using correlation analysis. An innovative …
Asymmetric Information And Uncertainty: The Usefulness Of Logbooks As A Regulation Measure, Niels Vestergaard, Frank Jensen
Asymmetric Information And Uncertainty: The Usefulness Of Logbooks As A Regulation Measure, Niels Vestergaard, Frank Jensen
Niels Vestergaard
In many fisheries managed by quota systems fishermen are required to keep a logbook containing information about catches. No well functioning enforcement system is set up in connection with the logbooks, since the purpose is to assist biologists in making stock assessments. In this paper we consider a case where three market failures (a stock externality problem, a stock uncertainty problem and problems with measuring individual catches) arise simultaneously. It is shown that a stock tax and a tax on voluntary self- reported catches may solve these three problems. By taxing voluntary self-reported catches wemake use of logbook information. It …
A Short-Run Johansen Industry Model For Common-Pool Resources: Planning A Fishery's Industrial Capacity To Curb Overfishing, Kristiaan Kerstens, Niels Vestergaard, Dale Squires
A Short-Run Johansen Industry Model For Common-Pool Resources: Planning A Fishery's Industrial Capacity To Curb Overfishing, Kristiaan Kerstens, Niels Vestergaard, Dale Squires
Niels Vestergaard
Current methods for assessing capacity and its utilisation in fisheries operate at the firm-level, but neglect industry capacity. Here, we introduce the Johansen-Färe measure of plant capacity of the firm into a multi-output, frontier-based version of the short-run Johansen industry model. The model determines firm capacity utilisation such that current industry outputs are maintained, while minimising the use of fixed inputs at industry level and assuming abundant variable inputs. Policy extensions relevant to combating overfishing include tightening quotas, seasonal closures, linking economic and plant capacity, decommissioning schemes and area closures, implementation issues and equity considerations. The application to the Danish …
Illegal Landings: An Aggregate Catch Self-Reporting Mechanism, Lars Gårn Hansen, Frank Jensen, Niels Vestergaard, Urs Steiner Brandt
Illegal Landings: An Aggregate Catch Self-Reporting Mechanism, Lars Gårn Hansen, Frank Jensen, Niels Vestergaard, Urs Steiner Brandt
Niels Vestergaard
To solve the problem of illegal landings this article proposes a new tax mechanism based on the regulator's own aggregate catch estimates and ex ante self-reports of planned catch by fishermen. We show that the mechanism avoids illegal landings while ensuring (nearly) optimal exploitation and generating (nearly) correct entry and exit incentives. Finally we simulate the mechanism for the Danish cod fishery in Kattegat to obtain a rough indicator of the size of the tax. It turns out that the average tax payment as a percentage of profit is surprisingly low.
Methodological Reflections On The Short-Run Johansen Industry Model In Relation To Capacity Management, Kristriaan Kerstens, Dale Squires, Niels Vestergaard
Methodological Reflections On The Short-Run Johansen Industry Model In Relation To Capacity Management, Kristriaan Kerstens, Dale Squires, Niels Vestergaard
Niels Vestergaard
The specification of a convex production technology is a potential issue in estimating firm-level Johansen plant capacity utilisation rates and their subsequent use in the short-run Johansen industry capacity model of the fishery. There are different plant capacity utilisation estimates with convex and nonconvex technologies. When entered as parameters in the short-run Johansen industry model, this leads to different distributions in the activity vectors. With non-convex technology, more vessels remain active in the fleet, and there is no longer an overestimation of the number of decommissioned vessels compared to the use of a convex technology. A second methodological reflection involves …
Fishing Capacity In Europe: Special Issue Introduction, Niels Vestergaard
Fishing Capacity In Europe: Special Issue Introduction, Niels Vestergaard
Niels Vestergaard
No abstract provided.
Sunk Cost And Entry-Exit Decisions Under Individual Transferable Quotas: Why Industry Restructuring Is Delayed, Niels Vestergaard, Frank Jensen, Henning P. Jørgensen
Sunk Cost And Entry-Exit Decisions Under Individual Transferable Quotas: Why Industry Restructuring Is Delayed, Niels Vestergaard, Frank Jensen, Henning P. Jørgensen
Niels Vestergaard
The paper shows that explicit modelling of sunk cost and a firm's entry-exit decision in a traditional deterministic investment model may give an explanation of the slow transition to the optimal fleet structure following the introduction of individual transferable quotas (ITQs). The analysis shows that the annual lease unit price of quota may be in a range where the long-run fieet structure will not be attainable at once. Over time, firms with zero gross investment as optimal behavior may leave the industry as the capital decays and over the transition period the optimal fieet structure prevails.
Technical Efficiency Of The Danish Trawl Fleet: Are The Industrial Vessels Better Than Others?, Niels Vestergaard, Dale Squires, Frank Jensen, Jesper Levring Andersen
Technical Efficiency Of The Danish Trawl Fleet: Are The Industrial Vessels Better Than Others?, Niels Vestergaard, Dale Squires, Frank Jensen, Jesper Levring Andersen
Niels Vestergaard
Technical efficiency in the Danish trawl fishery in the North Sea is estimated for 1997-1998 with a stochastic production frontier model. This model allows for both technical efficiency and a stochastic environment. The results show that the production frontier can be modelled by a translog function with time effects and a technical inefficiency function. The type of fishery (industrial or consumption) and size of vessel give a good explanation for the inefficiency of the fleet. The average technical efficiency is estimated to be 0.80. On avrage, industrial vessels have a higher technical efficiency than human consumption vessels, and smaller industrial …
A Principal-Agent Analysis Of Fisheries, Frank Jensen, Niels Vestergaard
A Principal-Agent Analysis Of Fisheries, Frank Jensen, Niels Vestergaard
Niels Vestergaard
Very little principal-agent analysis has been done within the fisheries economic literature. This paper conducts a principal-agent analysis of fisheries. Within a standard principal-agent model, the low-cost agent must be allowed the same level of effort as under complete information. This conclusion does not hold for fisheries, because of a resource restriction and the fact that maximisation takes place over two variables. By means of comparative-static analysis, this paper argues that the low-cost agent must be allowed a larger effort than under complete information.
Management Of Fisheries In Eu: A Principal-Agent Analysis, Frank Jensen, Niels Vestergaard
Management Of Fisheries In Eu: A Principal-Agent Analysis, Frank Jensen, Niels Vestergaard
Niels Vestergaard
In this paper, an EU tax on fishing effort is studied as an alternative to the system of Total Allowable Catches (TACs). The analysis is conducted under imperfect information, and the hypothesis adopted is that the EU lacks information about the costs of individual fishermen. In light of this imperfection, there are at least two reasons for considering an EU tax. First, it can be used to correct part of the market failure associated with fisheries. Second, it can be used to secure correct revelation of fishermen types in light of asymmetric information.
Measures Of Welfare Effects In Multiproduct Industries: The Case Of Multispecies Individual Quota Fisheries, Niels Vestergaard
Measures Of Welfare Effects In Multiproduct Industries: The Case Of Multispecies Individual Quota Fisheries, Niels Vestergaard
Niels Vestergaard
A framework is developed to measure the welfare effects of individual quota reforms in multiproduct industries using the multimarket welfare measure techniques suggested by Just, Hueth, and Schmitz (1982) and the concept of virtual price in the production theory literature (Neary 1995; Squires and Kirkley 1996). Under joint in input production it shown that quasirent under a single quota can be measured by the producer surplus either in the output market for quota output or in the quota market. Under multiple quotas the welfare effects of quota policies can be measured in one of the quota markets using inverse derived …
Bæredygtig Udnyttelse Af Fornybare Ressourcer: Torskefiskeriet Ved Færøerne, Niels Vestergaard
Bæredygtig Udnyttelse Af Fornybare Ressourcer: Torskefiskeriet Ved Færøerne, Niels Vestergaard
Niels Vestergaard
The Faroe Islands cod fishery is analyzed for the period 1985-1992. It is shown that an approximately optimal and implementable fishery policy based on sustainability have increased the gross national income in the fishery by about 20%. This loss is due to an inoptimal organization of the fishery during that period combined with a very low cod stock at the end of 1992, which means reduced future catch possibilities. that the fishing capacity could have been reduced by about 1/3. The policy of sustainability is applied to the current situation in the fishery, and it is shown that the current …