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Author |
Bonhomme, Camille |
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Title |
Les prédateurs aux interfaces eau-air accélèrent-ils le recyclage des nutriments ? |
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Thesis |
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Year |
2016 |
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38 |
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broméliacées à réservoirs ; aquatic communities ; nitrogen cycling ; predation ; digestive mutualism |
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Abstract |
Étant donné le risque d'extinction accru des niveaux trophiques supérieurs en réponse aux changements environnementaux, la compréhension des mécanismes qui déterminent l’importance des prédateurs dans les fonctions clés de l’écosystème est essentielle. Les broméliacées à réservoirs sont des plantes capables d’absorber une partie de l’azote recyclé par les communautés de micro et macro-organismes aquatiques qu’elles hébergent dans les réservoirs d’eau entre leurs feuilles. Ces plantes ont été utilisées comme habitat dans lesquelles nous avons recréé différentes configurations de communautés aquatiques. En serres, l’apport de proies terrestres enrichies en 15N a permis de déterminer quelle configuration de communauté permet le recyclage le plus rapide de l’azote, en utilisant les broméliacées comme « intégrateurs ». Au laboratoire, nous avons testé l’influence d’un prédateur chassant à l’interface eau-air sur la quantité de proies terrestres entrant dans l’ «écosystème broméliacée ». Nos résultats montrent que (i) les prédateurs chassant à l’interface eau-air ont permis une augmentation de l’entrée de nutriments allochtones, (ii) les micro-organismes ont joué un rôle essentiel dans le recyclage de cet l’azote, et (iii) les prédateurs ont permis d’accélérer ce recyclage, d’autant plus qu’ils sont restés longtemps dans la plante. Nos résultats donnent un aperçu des mécanismes qui peuvent déterminer l’importance des effets « top-down » et « bottom-up » sur le cycle des nutriments dans d’autres systèmes. |
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Master's thesis |
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Université de Guyane |
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Cayenne |
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EcoFoG @ carole.legrand @ |
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290 |
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Author |
Delme, J. |
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Title |
Relations entre la dynamique de quelques espèces de la forêt tropicale humide et les facteurs du milieu. Evaluation de certaines imprécisions des données disponibles dans le dispositif de Paracou (Guyane) |
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2003 |
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37 |
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Guyane Francaise; Paracou; Bas Fonds; Symphonia Globulifera; Sol Perturbe; Litiere; Foret Tropicale |
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Master's thesis |
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Ecole Doctorale RP2E |
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Ferry, B. |
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EcoFoG @ webmaster @ 185 |
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38 |
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Richard-Hansen, Cécile ; Ackermann, Luc ; Berzins, Rachel ; Devillechabrolle, Jennifer ; Foch, Thibaut ; Goguillon, Bertrand ; Korysko, François ; Rinaldo, Raphaëlle |
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Title |
The return of white lipped peccaries in two main protected areas of French Guiana: update and insights into an uncommon population dynamics |
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Journal Article |
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Year |
2018 |
Publication |
Suiform Soundings |
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17 |
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1 |
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37-40 |
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EcoFoG @ carole.legrand @ |
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315 |
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Author |
Roelens, J.B. |
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Title |
Structure et dynamique spatiale d'Eperua falcata Aublet en forêt tropicale humide |
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2005 |
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36 |
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Master's thesis |
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Université des Antilles et de la Guyane |
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Blanc, L. |
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Call Number |
EcoFoG @ webmaster @ 221 |
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62 |
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Author |
Houël, Emeline ; Amusant, N. ; Stien, D. |
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Title |
Arbres et plantes à parfum |
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Book Chapter |
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Year |
2011 |
Publication |
De la recherche en Guyane – La science par exemple |
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35-36 |
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Ibis Rouge Editions |
Place of Publication |
Cayenne - Guyane française |
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PNR Guyane |
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EcoFoG @ carole.legrand @ |
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151 |
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Author |
Ciminera, Marina |
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Title |
Etude de la communauté d'hyménoptères associée à Ficus guianensis. |
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2012 |
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35 |
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Master's thesis |
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Université des Antilles et de la Guyane |
Place of Publication |
Kourou - Guyane française |
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Français |
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Finn, Kjellberg |
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EcoFoG @ carole.legrand @ |
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213 |
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Author |
Gradoz, Margot |
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Title |
Abroutissement dans les chablis : interaction entre les brouteurs et la régénération forestière en Guyane française |
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Year |
2019 |
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35 |
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Interaction faune-flore ; abroutissement ; chablis ; forêt tropicale ; défaunation |
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Master's thesis |
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Université de la Guyane |
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Cayenne - Guyane française |
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EcoFoG @ carole.legrand @ |
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323 |
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Author |
Baloup, Samantha |
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Title |
Diversité de la myrmécofaune dans une parcelle monospécifique d'hévéas |
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2009 |
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34 |
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Master's thesis |
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Université des Antilles et de la Guyane |
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Cayenne - Guyane française |
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Dejean, A.; Groc, S. |
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EcoFoG @ webmaster @ 158 |
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92 |
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Author |
Quilichini, Angélique ; Gibernau, Marc |
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Title |
Leurre et chaleur : la pollination par duperie chez les aracées |
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2013 |
Publication |
Stantari |
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31 |
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34-43 |
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EcoFoG @ carole.legrand @ |
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162 |
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Author |
Rivol, L. |
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Title |
La diversité bactérienne évaluée par la méthode d'arisa dans une chronoséquence de revégétalisation d'un site degradé |
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2004 |
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33 pp |
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Arisa; Denombrement; Sol Perturbe; Revegetatilisation; Diversite Genetique; Orpaillage |
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Master's thesis |
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Publisher |
Université des Antilles et de la Guyane |
Place of Publication |
Kourou |
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Domenach, A.M. |
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Call Number |
EcoFoG @ webmaster @ 220 |
Serial |
57 |
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