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Endogenous Fishing Mortalities: a State-Space Bioeconomic Model
(Oxford University Press, 2017-05-13)
A methodology that endogenously determines catchability functions that link fi shing mortality with
contemporaneous stock abundance is presented. We consider a stochastic age-structured model for
a fishery composed by ...
The Optimality of the Common Fisheries Policy: the Northern Stock of Hake
(University of the Basque Country, Department of Foundations of Economic Analysis II, 2002)
We evaluate the management of the Northern Stock of Hake during 1986-2001. A stochastic
bioeconomic model is calibrated to match the main features of this fishing ground. We show how catches, biomass stock and profits ...
Pulse vs. Optimal Stationary Fishing: The Northern Stock of Hake
(University of the Basque Country, Department of Foundations of Economic Analysis II, 2011-11)
Pulse fishing may be a global optimal strategy in multicohort fisheries. In this article we compare the pulse fishing solutions obtained by using global numerical methods with the analytical stationary optimal solution. ...
Endogenous fisheries management in a stochastic model: Why do fishery agencies use TAC
(University of the Basque Country, Department of Foundations of Economic Analysis II, 2010-12)
The aim of this paper is to explain under which circumstances using TACs as instrument to manage a fishery along with fishing periods may be interesting from a regulatory point of view. In order to do this, the deterministic ...
Lessons from the northern hake long-term management plan: Could the economic assessment have accepted it?
(University of the Basque Country, Department of Foundations of Economic Analysis II, 2011-01)
An economic expert working group (STECF/SGBRE-07-05) was convened in 2007 for evaluating the potential economic consequences of a Long-Term Management Plan for the northern hake. Analyzing all the scenarios proposed by ...
Economic Effects of Global Warming under Stock Growth Uncertainty: The European Sardine Fishery
(University of the Basque Country, Department of Foundations of Economic Analysis II, 2013)
Global warming of the oceans is expected to alter the environmental conditions that determine the growth of a fishery resource. Most climate change studies are based on models and scenarios that focus on economic growth, ...
On the Benefits of Including Age-structure in Harvest Control Rules
(2014-08-27)
This paper explores the benefits of including age-structure in the control rule (HCR) when decision makers regard their (age-structured) models as approximations. We find that introducing age structure into the HCR reduces ...
Reference Points and Optimal Management in Stochastic Age-Structured Fisheries Models
(University of the Basque Country, Department of Foundations of Economic Analysis II, 2009-07)
The purpose of this article is to characterize dynamic optimal harvesting trajectories that maximize discounted utility assuming an age-structured population model, in the same line as Tahvonen (2009). The main novelty of ...
Why Economists Reject Long-Term Fisheries Management Plans?
(University of the Basque Country, Department of Foundations of Economic Analysis II, 2009-08)
Most fisheries agencies conduct biological and economic assessments independently. This independent conduct may lead to situations in which economists reject management plans proposed by biologists. The objective of this ...
The Evaluation of Fisheries Management: A Dynamic Stochastic Approach
(University of the Basque Country, Department of Foundations of Economic Analysis II, 2003-03)
In this article, we analyze how to evaluate fishery resource management under “ecological uncertainty”. In this context, an efficient policy consists of applying a different exploitation rule depending on the state of the ...