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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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Nom du dispositif
Cestas (33612)


Type de dispositif
Plantation forêts mélangées
Mono ou multi-site
Insertion dans un réseau
Le site ORPHEE fait partie du réseau mondial Treedivnet (
Site Web
Le site ORPHEE comprend 8 blocs, avec 32 placettes dans chaque bloc. Chaque combinaison possible de 1, 2, 3, 4 et 5 espèces d'arbres a été plantée dans chaque bloc. Les placettes mesurent 20 m sur 20 m et la distance de plantation entre deux arbres est de 2 m. Ainsi, 100 arbres ont été plantés par placette. Les placettes sont distribuées au hasard dans chaque bloc. La moitié des blocs est irriguée pour observer les effets de changements climatiques sur le fonctionnement de l'écosystème.
Date(s) d'installation
Janvier / Février 2008
12 ha
Type de substrat
Sable landais
Espèces structurantes
Betula pendula, Quercus pyrenaica, Quercus robur, Quercus ilex, Pinus pinaster
Variables testées/observées
Diversité spécifique et fonctionnel en arbres. Irrigation.
instrumentation-équipement particulier
Pièges à litière, pièges à carabes, capteurs de flux de sève.
Nature des données / type de mesures
Croissance, herbivorie, décomposition litière, microclimat, flore du sous-bois, microbiote foliaire.
Disponibilité des données
Voir site web
Gestionnaire des données
Voir site web
Contact scientifique
Hervé Jactel
Partenaires (installation/gestion/suivi)