MareFrame publications in Fisheries Research Special Issue: Advancing Ecosystem Based Fisheries Management Edited by Gunnar Stefansson, Javier Ruiz, Sveinn Agnarsson, Ingrid van Putten Implementing the ecosystem based approach for fisheries management requires the development and use of innovative tools and processes. The importance of the EBFM has been highlighted worldwide by EU, FAO, ICES, NOAA,
Abstract The EU is aiming to apply an Ecosystem Approach (EA) to the management of all human activities in the marine environment, with the goal of establishing healthy and productive seas and oceans. This article explores how the EA is introduced into the EU Fisheries, with a focus on current interfaces and collaborative dynamics between
Abstract A coupled population dynamics and economic model is applied to the purse seine anchovy-fishery in the Gulf of Cádiz. The model simulates the population dynamics, landings and profits on a probabilistic frame. These simulations are used to assess the biological and economic consequences of an individual quota management framework enveloped by a fixed Total
Abstract A repeated crossover experiment comparing learning among students handing in pen-and-paper homework (PPH) with students handing in web-based homework (WBH) has been conducted. The system used in the experiments, the tutor-web, has been used to deliver homework problems to thousands of students in mathematics and statistics over several years. Since 2011 experimental changes have
Abstract Estimating parameters of a statistical fisheries assessment model typically involves a comparison of disparate datasets to a forward simulation model through a likelihood function. In all but trivial cases the estimations of these models tend to be time-consuming due to issues related to multi-modality and non-linearity. This paper develops novel parallel implementations of popular
Abstract The aim of this work is to measure the development of the concentration of quota holdings by harvesting companies and harbours in Iceland. For the period 1990–2014, the analysis traces the development of relative quota holdings of the biggest actors operating large vessels as well as firms that employ smaller boats that are only
Abstract Understanding the mechanisms responsible for stability and persistence of ecosystems is one of the greatest challenges in ecology. Robert May showed that, contrary to intuition, complex randomly built ecosystems are less likely to be stable than simpler ones. Few attempts have been tried to test May's prediction empirically, and we still ignore what is
Abstract The European Union is aiming to implement an Ecosystem Approach for the management of all human activities in the marine environment, hereunder the fisheries sector. Since the last reform of the Common Fisheries Policy in 2013, several analyses have highlighted the barriers and challenges to this aim. Despite the claim that much of the
Abstract The aim of this work is to measure the development of the concentration of quota holdings by harvesting companies and harbours in Iceland. For the period 1990–2014, the analysis traces the development of relative quota holdings of the biggest actors operating large vessels as well as firms that employ smaller boats that are only
Abstract Anchovy population dynamics in the Gulf of Cádiz are governed by environmental processes. Sea surface temperature, intense easterly winds, and discharges from the Guadalquivir River have been identified as key factors determining early life stage mortality in this anchovy stock. We have constructed an environment-based recruitment model that simulates the abundance of juveniles under