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| Registros recuperados: 13 | |
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| Kell, L. T.; Fromentin, Jean-marc. |
| This paper presents an example of Management Strategy Evaluation (MSE) for Mediterranean and East Atlantic bluefin tuna using the FLR open source framework. Scenarios corresponding to alternative plausible hypotheses about the stock dynamics were used to evaluate alternative management strategies and to test their robustness to implementation error e.g. catch mis-reporting. The strategies evaluated correspond to i) harvest control rule (HCR) based upon F0.1 (a proxy for FMSY ) with an objective of restoring the stock to a level that would “ permit the maximum sustainable catch” and ii) a reduction of fishing mortality on immature fish. The main conclusions were that the F0.1 HCR alone would not result in the recovery of the stock in the next 15 years and... |
| Tipo: Text |
Palavras-chave: Thunnus thynnus; Management plans; Management strategy evaluation; Simulation model. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00194/30477/28884.pdf |
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| Garcia, Dorleta; Urtizberea, Agurtzane; Diez, Guzman; Gil, Juan; Marchal, Paul. |
| Deepwater fish are characterized by long lifespans, late maturity and low productivity. This implies slow recovery from low biomass levels and it is, therefore, important to manage these stocks correctly to avoid overfishing. However, these stocks are generally data poor, which it makes difficult to apply quantitative assessment models on which to base their management. The management strategy evaluation (MSE) approach consists in evaluating the performance of management strategies by simulation before their implementation. In the evaluation, the main sources of uncertainty in a fishery system and its management process should be taken into account in order to find robust management strategies. Thus, the MSE approach is relevant to the management of... |
| Tipo: Text |
Palavras-chave: Bio-economic modelling; Deep-sea fisheries; Harvest control rules; Management strategy evaluation; Norway; Bay of Biscay; Gibraltar; Atlantic Ocean. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00176/28760/27231.pdf |
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| Rochet, Marie-joelle; Rice, Jake C.. |
| Simulation-based management strategy evaluation is a valuable tool, when appropriately implemented. Implementation, however, may not always have been appropriate, and some reasons are provided why perhaps there is incomplete faith in certain of its technical aspects, such as knowing the distribution of the parameters of population processes from the information in limited datasets. A management strategy that has been evaluated by simulation should not be used as an "autopilot", because even the most competent of experts can develop autopilots with imperfect and incomplete knowledge of reality, and all information should be incorporated when decisions have to be made. |
| Tipo: Text |
Palavras-chave: Decision-making; Distribution models; Management strategy evaluation. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00002/11278/7922.pdf |
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| Vermard, Youen. |
| In the current context of fisheries management, simulation models are required to support the evaluation of management scenarios. These models should include the key processes of the fishery system: stock dynamics, fleet dynamics, manager decision-making, and the interactions between these three elements. Most of the existing models have concentrated on the modeling of biological processes, population dynamics, and ecosystem interactions. However, a number of fisheries management failures could have resulted from a misunderstanding of fishers behavior rather than from limited knowledge of the status of fishery resources. It has for example been showed that in an exploited system, fishers’ spatial behavior influences the predicted outcomes of management... |
| Tipo: Text |
Palavras-chave: Dynamique de flottille; RUM; VMS; Évaluation de mesures de gestion; Fleet dynamics; Random Utility Model; VMS; Management strategy evaluation. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00001/11256/7799.pdf |
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| Kaplan, Isaac C.; Hansen, Cecilie; Morzaria-luna, Hem Nalini; Girardin, Raphael; Marshall, Kristin N.. |
| Management strategy evaluation (MSE) provides a simulation framework to test the performance of living marine resource management. MSE has now been adopted broadly for use in single-species fishery management, often using a relatively simple “operating model” that projects population dynamics of one species forward in time. However, many challenges in ecosystem-based management involve tradeoffs between multiple species and interactions of multiple stressors. Here we use complex operating models, multi-species ecosystem models of the California Current and Nordic and Barents Seas, to test threshold harvest control rules that explicitly address the linkage between predators and prey, and between the forage needs of predators and fisheries. Specifically,... |
| Tipo: Text |
Palavras-chave: Harvest control rules; California Current; Nordic and Barents Seas; Pacific hake; Atlantic mackerel; Management strategy evaluation. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00645/75702/76609.pdf |
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| Kell, Laurence T.; Mosqueira, I; Grosjean, P; Fromentin, Jean-marc; Garcia, D; Hillary, R; Jardim, E; Mardle, S; Pastoors, M.a; Poos, J.j.; Scott, F; Scott, R. |
| The FLR framework (Fisheries Library for R) is a development effort directed towards the evaluation of fisheries management strategies. The overall goal is to develop a common framework to facilitate collaboration within and across disciplines (e.g. biological, ecological, statistical, mathematical, economic, and social) and, in particular, to ensure that new modelling methods and software are more easily validated and evaluated, as well as becoming widely available once developed. Specifically, the framework details how to implement and link a variety of fishery, biological, and economic software packages so that alternative management strategies and procedures can be evaluated for their robustness to uncertainty before implementation. The design of the... |
| Tipo: Text |
Palavras-chave: Uncertainty; Stock assessment; Software; Simulation framework; Precautionary approach; Open source; Management strategy evaluation; Bio economic modelling. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2732.pdf |
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| Rochet, Marie-joelle; Rice, Jake C.. |
| Simulation-based management strategy evaluations are increasingly developed and used for science advice in support of fisheries management, along with risk evaluation and decision analysis. These methods tackle the problem of uncertainty in fisheries systems and data by modelling uncertainty in two ways. For quantities that are difficult to measure accurately or are inherently variable, variables are replaced by probability distributions, and system dynamics are simulated by Monte Carlo simulations, drawing numbers from these distributions. For processes that are not fully understood, arrays of model formulations that might underlie the observed patterns are developed, each is assumed successively, and the results of the corresponding arrays of model... |
| Tipo: Text |
Palavras-chave: Uncertainty; Risk estimates; Monte Carlo simulation; Management strategy evaluation. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6361.pdf |
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| Registros recuperados: 13 | |
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