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	Provedor de dados ArchiMer (44) Autor Fablet, Ronan (44) De Pontual, Helene (13) Chapron, Bertrand (8) Boucher, Jean-marc (4) Chessel, Anatole (4) Lefort, Riwal (4) Maze, Guillaume (4) Augustin, Jean-marie (3) Benzinou, Abdesslam (3) Berger, Laurent (3) Carbini, Sebastien (3) Lenca, Philippe (3) Mercier, Herle (3) Tandeo, Pierre (3) Woillez, Mathieu (3) Autret, Emmanuelle (2) Ba, Sileye O. (2) Bourguignon, Sebastien (2) Garren, Francois (2) Gaultier, Lucile (2) Mais... Palavra-chave Data assimilation (4) Interpolation (3) Otolith (3) Active regions (2) Data-driven methods (2) European sea bass (2) Fisheries (2) Fisheries acoustics (2) Growth ring extraction (2) Level sets (2) Multibeam echosounder (2) Neural networks (2) Otolith imaging (2) Population structure (2) 2D otolith growth (1) A contrario detection (1) Acid etching (1) Acoustics (1) Age (1) Age estimation method (1) Mais... Tipo do documento Text (44) Ano 2021 (1) 2020 (3) 2019 (2) 2018 (2) 2017 (3) 2016 (1) 2015 (1) 2014 (3) 2013 (1) 2012 (5) 2011 (3) 2010 (2) 2009 (5) 2008 (5) 2007 (2) 2006 (4) 2003 (1) Mais... País France (44) Idioma Inglês (40) Francês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 44 Primeira ... 1 2 3 ... Última Automatic Fish Ageing (AFISA) ArchiMer Mahe, Kelig; Parisi, Vincenc; Carbini, Sebastien; Soria, J.a.; Harbitz, A; De Pontual, Helene; Cotano, U; Songer, S; Millner, R; Lewy, P; Gudmundsson, E.f; Fablet, Ronan; Benzinou, Abdesslam. Most of the fish stocks are assessed using age-based models, however age estimations using otoliths costs several million euros annually. In this context, Automatic Fish Ageing (EU Project) would provide means to standardize ageing among laboratories and build interpreted image databases ensuring the information conservation. Automation improves growth studies while reducing the cost of the acquisition of age data. The whole processing chain from the acquisition of otolith data to the actual ageing issue using pattern recognition or statistical inference has been realised for three case studies : a) Cod (Gadus morhua ; Faeroes, North Sea, North East Arctic) b) Anchovy (Engraulis encrasicolus ; Bay of Biscay) c) Plaice (Pleuronectes platessa, Eastern... Tipo: Text Ano: 2009 URL: http://archimer.ifremer.fr/doc/00011/12270/10548.pdf Spatio-Temporal Interpolation of Cloudy SST Fields Using Conditional Analog Data Assimilation ArchiMer Fablet, Ronan; Huynh Viet, Phi; Lguensat, Redouane; Horrein, Pierre-henri; Chapron, Bertrand. The ever increasing geophysical data streams pouring from earth observation satellite missions and numerical simulations along with the development of dedicated big data infrastructure advocate for truly exploiting the potential of these datasets, through novel data-driven strategies, to deliver enhanced satellite-derived gapfilled geophysical products from partial satellite observations. We here demonstrate the relevance of the analog data assimilation (AnDA) for an application to the reconstruction of cloud-free level-4 gridded Sea Surface Temperature (SST). We propose novel AnDA models which exploit auxiliary variables such as sea surface currents and significantly reduce the computational complexity of AnDA. Numerical experiments benchmark the proposed... Tipo: Text Palavras-chave: Ocean remote sensing data; Data assimilation; Optimal interpolation; Analog models; Multi-scale decomposition; Patch-based representation. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00426/53806/54741.pdf Importance and future of individual markers for the ecosystem approach to fisheries ArchiMer Fromentin, Jean-marc; Ernande, Bruno; Fablet, Ronan; De Pontual, Helene. The use of genetic, biochemical and electronic markers in population biology and ecology has been growing tremendously during the last two decades. The first part of this paper aims at reviewing the main principles and advances of these individual markers through a few key applications on exploited marine fish populations. The second part is more prospective and investigates some possibilities that could arise in the near future through: (i) the development of new markers, (ii) the combination of different markers and (iii) the combination of quantitative approaches-whether classical or new-with individual markers. It is finally stressed how crucial individual markers will be to unravel the biocomplexity of wild fish populations and the key role they... Tipo: Text Palavras-chave: Genetic marker; Biochemical marker; Electronic tag; Otolith; Isotope; Population structure; Statistical and mechanistic model; Fisheries. Ano: 2009 URL: http://archimer.ifremer.fr/doc/00000/11163/7522.pdf Are hake otolith macrostructures randomly deposited? Insights from an unsupervised statistical and quantitative approach applied to Mediterranean hake otoliths ArchiMer Courbin, Nicolas; Fablet, Ronan; Mellon-duval, Capucine; De Pontual, Helene. Individual fish age data are crucial to fish stock assessment, so their accuracy and precision are vital. The acquisition of age data most often relies on interpreting fish otoliths, a complex task in which expert subjectivity increases with the complexity of the structural patterns of the otoliths. The question arises for certain fish species (e.g. hake, Merluccius merluccius) whether the deposition of otolith macrostructures is meaningful for age estimation. A quantitative method based on the evaluation of otolith similarity in terms of structural patterns is presented to investigate this issue. It relies on the determination of a typology of otolith macrostructures from an unsupervised statistical analysis of the distributions of their characteristics.... Tipo: Text Palavras-chave: Quality control; Otolith; Merluccius merluccius; Growth; Age estimation method; Age. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2678.pdf Registros recuperados: 44 Primeira ... 1 2 3 ... Última

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