Consulta: creatorFacets:"Drouineau, Hilaire"
Registros recuperados: 11
Data/hora: 06/06/2024 03:26:16

Evaluation of the bioeconomic sustainability of multi-species multi-fleet fisheries under a wide range of policy options using ISIS-Fish
Provedor de dados: 5
Autores: Pelletier, Dominique; Mahevas, Stephanie; Drouineau, Hilaire; Vermard, Youen; Thebaud, Olivier; Guyader, Olivier; Poussind, Benjamin.
In order to provide reliable scientific advice and support for fisheries management, it is necessary to evaluate the biological and economic sustainability of complex fisheries, such as multi-species multi-fleet fisheries. Existing policy-screening modelling tools are not fully suitable in this purpose due to either an over-simplified description of population dynamics, or due to the lack of consideration of economic aspects. In this paper, we present a package that enables quantitative bioeconomic assessment of management scenarios. Population dynamics is described through spatially- and seasonally-explicit models. Exploitation dynamics is characterized by several fishing activities with specific spatial and seasonal features, and practiced by several...
Tipo: Text
Palavras-chave: Policy screening; Natural resource management; Fisheries dynamics; Bioeconomic model; Population dynamics; Complex systems; Simulation tool.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6782.pdf

Assessing the impact of different management options using ISIS-Fish*: the French Merluccius merluccius Nephrops norvegicus mixed fishery of the Bay of Biscay
Provedor de dados: 5
Autores: Drouineau, Hilaire; Mahevas, Stephanie; Pelletier, Dominique; Beliaeff, Benoit.
In this paper, we present an approach to compare the impact of different management options oil the dynamics of a mixed fishery. We used ISIS-Fish, a simulation tool aimed at evaluating the impact of spatial and seasonal management measures on the dynamics of mixed fisheries. The French Nephrops norvegicus (Norway lobster) Merluccius merluccius (hake) mixed fishery of the Bay of Biscay was chosen as a Study case. First, we parameterised the Population and exploitation models. We then selected several management measures, including marine protected fishermen's reaction to each measure. Then, a sensitivity analysis (MPAs) and total allowable catches (TAC), and parameterised fish sensitivity analysis was performed according to a fractional factorial...
Tipo: Text
Palavras-chave: Simulation design; Sensitivity analysis; Management measures; Spatial model; Fisheries dynamics.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1340.pdf

A length-structured spatially explicit model for estimating hake growth and migration rates
Provedor de dados: 5
Autores: Drouineau, Hilaire; Mahevas, Stephanie; Bertignac, Michel; Duplisea, Daniel.
Drouineau, H., Mahevas, S., Bertignac, M., and Duplisea, D. 2010. A length-structured spatially explicit model for estimating hake growth and migration rates. - ICES Journal of Marine Science, 67: 1697-1709.
Tipo: Text
Palavras-chave: Growth; Length-structured model; Merluccius merluccius; Migration; Spatial model.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00016/12714/9767.pdf

Cause or consequence? Exploring the role of phenotypic plasticity and genetic polymorphism in the emergence of phenotypic spatial patterns of the European eel
Provedor de dados: 5
Autores: Mateo, Maria; Lambert, Patrick; Tetard, Stephane; Castonguay, Martin; Ernande, Bruno; Drouineau, Hilaire.
The European eel (Anguilla anguilla), and generally, temperate eels, are relevant species for studying adaptive mechanisms to environmental variability because of their large distribution areas and their limited capacity of local adaptation. In this context, GenEveel, an individual-based optimization model, was developed to explore the role of adaptive phenotypic plasticity and genetic-dependent habitat selection, in the emergence of observed spatial life-history traits patterns for eels. Results suggest that an interaction of genetically and environmentally controlled growth may be the basis for genotype-dependent habitat selection, whereas plasticity plays a role in changes in life-history traits and demographic attributes. Therefore, this suggests that...
Tipo: Text
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00360/47095/47018.pdf

A Bayesian framework to objectively combine metrics when developing stressor specific multimetric indicator
Provedor de dados: 5
Autores: Drouineau, Hilaire; Lobry, Jeremy; Delpech, C.; Bouchoucha, Marc; Mahevas, Stephanie; Courrat, A.; Pasquaud, S.; Lepage, M.
In the context of the European Water Framework Directive (WFD), monitoring programs and related indicators have been developed to assess anthropogenic impacts on various components of aquatic ecosystems. While great precautions are usually taken when selecting and calculating relevant core metrics, little attention is generally paid to the generation of the multimetric indicator, i.e. the combination of the different core metrics. Indeed, most multimetric indicators are generated by simply averaging or summing metrics, without taking into account their sensitivity and their variability. Moreover, few indicators provide a rigorous estimate of the uncertainty of the assessments, while this estimation is essential for managers. In this context, we developed a...
Tipo: Text
Palavras-chave: Multimetric fish-based indicator; Bayesian method; Pressure-impact models; Water Framework Directive; Anthropogenic pressure; Monitoring program; Transitional waters.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00049/16037/13572.pdf

80’s population-specific compositions of two related anadromous shad species during the oceanic phase determined by microchemistry of archived otoliths
Provedor de dados: 5
Autores: Nachón, David José; Bareille, Gilles; Drouineau, Hilaire; Tabouret, Helene; Taverny, Catherine; Boisneau, Catherine; Berail, Sylvain; Pécheyran, Christophe; Claverie, Fanny; Daverat, Françoise.
The specific stock composition and dispersion of anadromous fish species aggregations in the marine environment are poorly known, while they can play a major role in the metapopulation dynamics. Otolith microchemistry has proven to be a powerful tool to address natal origins of anadromous fish. We used archived otolith microchemistry to investigate the population-specific composition of European shads (Alosa alosa and Alosa fallax) subadults in the ocean during the 80’s. The allocation of natal origin was addressed relying on contemporary water and juveniles signatures within a Bayesian model. A great discrimination of natal origin was obtained at the Biscay Gulf scale. However, the discrimination of 80’s natal origin for the southern rivers with similar...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00504/61562/65487.pdf

A fish-based index of estuarine ecological quality incorporating information from both scientific fish survey and experts knowledge
Provedor de dados: 5
Autores: Tableau, Adrien; Drouineau, Hilaire; Delpech, C.; Pierre, M.; Lobry, J.; Le Pape, O.; Breine, J.; Lepage, Mario.
In the Water Framework Directive (European Union) context, a multimetric fish based index is required to assess the ecological status of French estuarine water bodies. A first indicator called ELFI was developed, however similarly to most indicators, the method to combine the core metrics was rather subjective and this indicator does not provide uncertainty assessment. Recently, a Bayesian method to build indicators was developed and appeared relevant to select metrics sensitive to global anthropogenic pressure, to combine them objectively in an index and to provide a measure of uncertainty around the diagnostic. Moreover, the Bayesian framework is especially well adapted to integrate knowledge and information not included in surveys data. In this context,...
Tipo: Text
Palavras-chave: Anthropogenic pressure; Bayesian method; Expert judgement; Multimetric fish-based indicator; Prior information; Water Framework Directive.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00146/25700/24029.pdf

Développement et ajustement d'un modèle de dynamique des populations structuré en longueur et spatialisé appliqué au stock Nord de merlu (Merluccius merluccius)
Provedor de dados: 5
Autores: Drouineau, Hilaire.
The biology of European hake has been largely studied, however some specific processes of its biology, especially growth and migration, are still poorly known. Those uncertainties have consequences on the quality of the stock assessments and on the stock management by limiting the possibility to assess the effect of spatial management measures. Therefore, we develop an integrated length-structured and spatialised model of population dynamics aiming at improving the estimation of unknown parameters of the population dynamic. The model relies on a state model describing the dynamics of the population and the fishing activity, and on an observation model describing the observation processes and providing a likelihood function.  A review of the literature...
Tipo: Text
Palavras-chave: Parameters estimation; Migration; Growth; Sensitivity analysis; Likelihood; Spatialised model; Stock assessment; Length structured model; Hake; Estimation de paramètres; Migration; Croissance; Analyse de sensibilité; Maximum de vraisemblance; Modèle spatialisé; Évaluation des stocks; Modèle structuré en longueur; Merlu.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/these-3710.pdf

Abrupt shifts in the Gironde fish community: an indicator of ecological changes in an estuarine ecosystem
Provedor de dados: 5
Autores: Chevillot, Xavier; Pierre, Maud; Rigaud, Arthur; Drouineau, Hilaire; Chaalali, Aurelie; Sautour, Benoit; Lobry, Jeremy.
For decades, global climate change has directly and indirectly affected the structure and function of ecosystems. Abrupt changes in biodiversity have been observed in response to linear or sudden modifications to the environment. These abrupt shifts can cause long-term reorganizations within ecosystems, with communities exhibiting new functional responses to environmental factors. Over the last 3 decades, the Gironde estuary in southwest France has experienced 2 abrupt shifts in both the physical and chemical environments and the pelagic community. Rather than describing these shifts and their origins, we focused on the 3 inter-shift periods, describing the structure of the fish community and its relationship with the environment during these periods. We...
Tipo: Text
Palavras-chave: Ecosystem state; Fish diversity; Estuary; Generalised linear mixed models; GLMM; Time series; Shift; Inter-shift periods.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00334/44567/44282.pdf

The need for a protean fisheries science to address the degradation of exploited aquatic ecosystems
Provedor de dados: 5
Autores: Drouineau, Hilaire; Lobry, Jeremy; Bez, Nicolas; Travers-trolet, Morgane; Vermard, Youen; Gascuel, Didier.
In this introductory paper we highlight key questions that were discussed during the symposium on “Status, functioning and shifts in marine ecosystems” organized by the Association Française d’Halieutique (French Association for Fisheries Sciences, Montpellier, France, July 2015). This symposium illustrated that fisheries science is now working at multiple scales and on all dimensions of socio-ecosystems (ecological, political, sociological, and economic), with a great diversity of approaches and taking into account different levels of complexity while acknowledging diverse sources of uncertainty. We argue that we should go one step further and call for a protean fisheries science to address the deteriorated states of aquatic ecosystems caused by...
Tipo: Text
Palavras-chave: EAFM; Fisheries management; Fisheries science; Marine resources; Models; Uncertainty.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00359/46990/46921.pdf

Assessing the impact of discretisation assumptions in a length-structured population growth model
Provedor de dados: 5
Autores: Drouineau, Hilaire; Mahevas, Stephanie; Bertignac, Michel; Fertin, A.
Most of the traditional assessment models are age-structured. However, many biological and exploitation processes are more length-dependent than age-dependent, and the required length-age conversion of available data is often not reliable. Consequently, length-structured or age-length structured models have undergone considerable development in recent years. The growth transition matrix used to model the mean growth and growth variability of the population, is of primary importance in a length-structured matrix model. Building this growth transition matrix is not trivial and it is necessary to assess the impact that various assumptions may have to identify robust model structures. In this study, we assess the effects of (1) time and length discretisation,...
Tipo: Text
Palavras-chave: Sensitivity analysis; Discrete model; Growth; Length structured model.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4301.pdf