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| HAL : hal-00409081, version 1 |
| DOI : 10.1016/j.ecolmodel.2009.06.019 |
| Fiche détaillée |  Récupérer au format |
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| Ecological Modelling 220 (2009) 3536-3545 |
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| Neutral modelling of agricultural landscapes by tessellation methods—Application for gene flow simulation. |
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Florence Le Ber 1, 2Claire Lavigne 3 |
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| (2009) |
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| Neutral landscape models are not frequently used in the agronomical domain, whereas they would be very useful for studying given agro-ecological or physical processes. Contrary to ecological neutral landscape models, agricultural models have to represent and manage geometrical patches and thus should rely on tessellation methods. We present a three steps approach that aimed at simulating such landscapes. Firstly, we characterized the geometry of three real field patterns; secondly, we generated simulated field patterns with two tessellation methods attempting to control the value of some of the observed characteristics and, thirdly, we evaluated the simulated field patterns. For this evaluation, we considered that good simulated field patterns should capture characteristics of real landscapes that are important for the targeted agro-ecological process. Real landscapes and landscapes simulated using either a Voronoi or a rectangular tessellation were thus compared when used as input data within a gene flow model. The results showed that neither tessellation method captured field shapes correctly, thus leading to over or (small) under estimation of gene flow. The Voronoi tessellation, though, performed better than the rectangular tessellation. Possible research directions are proposed to improve the simulated patterns, including the use of post processing, the control of cell orientation or the implementation of other tessellation techniques. |
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| 1 : | Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS) |
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CNRS : UMR7517 – Université de Strasbourg – INSU – ENGEES |
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| 2 : | ORPAILLEUR (INRIA Lorraine - LORIA) |
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INRIA – CNRS : UMR7503 – Université Henri Poincaré - Nancy I – Université Nancy II – Institut National Polytechnique de Lorraine (INPL) |
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| 3 : | Unité de recherche Plantes et Systèmes de Culture Horticoles (PSH) |
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Institut national de la recherche agronomique (INRA) : UR1115 |
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| 4 : | INRA - Mathématiques et Informatique Appliquées (Unité MIAJ) |
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Institut national de la recherche agronomique (INRA) |
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| 5 : | Unité Impacts Ecologiques des Innovations en Production Végétale (ECO-INNOV) |
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Institut national de la recherche agronomique (INRA) : UA1240 |
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| 6 : | Biologie et Gestion des Adventices (BGA) |
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Institut national de la recherche agronomique (INRA) : UR1210 – Université de Bourgogne – Etablissement National d'Enseignement Supérieur Agronomique de Dijon |
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| Domaine | : | Informatique/Intelligence artificielle Sciences du Vivant/Ecologie, Environnement Sciences du Vivant/Sciences agricoles |
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| neutral landscape models – agricultural landscapes – gene flow – spatial point process – voronoi diagrams – rectangular tessellation – field pattern – genexp-landsites |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00409081, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00409081 | |
| oai:hal.archives-ouvertes.fr:hal-00409081 | |
| Contributeur : Florence Le Ber | |
| Soumis le : Mercredi 9 Septembre 2009, 12:05:26 | |
| Dernière modification le : Jeudi 19 Novembre 2009, 16:54:39 | |
