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Nomenclatura Unesco > (31) Ciencias Agrarias > (3106) Ciencia forestal > (3106.08) Silvicultura

Mostrando recursos 1 - 20 de 1,838

1. Foraging behavioral of Phylloscartes ventralis (Aves, Tyrannidae) in native and planted forests of southern Brazil - Lima, Andre de Mendonca; Hartz, Sandra Maria
Few studies have related the effects of silviculture practices to the behavior of bird species in the Neotropics. The present study examined the foraging behavior of Phylloscartes ventralis (Temminck, 1824) in a native forest and in silviculture areas of Pinus elliotti and Araucaria angustifolia with different structures and ages. We tested two general hypotheses: (1) areas of commercial forest plantation change the foraging behavior of P. ventralis in relation to native forest, and (2) the foraging behavior of P. ventralis in silviculture areas with understories (complex structures) is different from its behavior in areas without understory. The results showed that...

2. Utilisation de photographies hémisphériques sous le couvert forestier guyanais - Gond, Valéry; Baret, Frederic; Ruelle, Boris; Weber, Sacha
 

3. Exportação de carbono e nutrientes pela colheita de Acacia mearnsii De Wild aos quatro anos de idade na Depressão Central, RS - Winckler Caldeira, Marcos Vinicius; Oliveira Godinho, Tiago de; Saidelles, Fabio Luiz Fleig; Viera, Márcio; Schumacher, Mauro Valdir; Chaves Castro, Kallil
The aim of this study was to estimate the content and export of carbon, macro and micronutrients inthe different components (leaf, alive and dead branch, bark, wood and roots) of the Acacia mearnsiitrees with 4 years old of age in Arroio dos Ratos-RS, in order to provide the forest management,based on the criterion of minimum export of nutrients. After determining the diameter distributionand its division into diameter classes (seven classes), three trees were selected in each classes. Usingthe 21 trees felled, the biomass of different components of trees was estimated. It was observed thatwood, which represents about 64% of the...

4. Substratos à base de lodo de esgoto na produção de mudas de Senna alata - Faria, Júlio Cézar Tannure; Winckler Caldeira, Marcos Vinicius; Delarmelina, William Macedo; Lacerda, Leonardo Cassani; Gonçalves, Elzimar de Oliveira
The aim of this study was to evaluate the growth of seedlings of Senna alata using different combinationsof residues, which are: sewage sludge, carbonized rice husk, straw coffee in natura and commercialsubstrate. The experiment was conducted in the Nursery Center for Agricultural Sciences, FederalUniversity of Espírito Santo, and mounted in a completely randomized design. When the seedlingsreached five months growth the following parameters were measured: stem diameter, plant height,ratio between plant height and stem diameter, shoot dry mass, dry mass of root system, total dry mass,ratio of dry mass shoot/root dry mass, ratio of root dry mass/dry mass of shoots...

5. Aménagement forestier et exploitation en forêt tropicale humide guyanaise - Brunaux, Olivier; Demenois, Julien
 

6. Eco-gene, a model for simulation studies on the spatial and temporal dynamics of genetic structures of tree populations - Degen, Bernd; Gregorius, Hans; Scholz, Florian
 

7. Diversité et originalité des modelés forestiers Guyanais - Filleron, Jean-Charles; Le Fol, Jérôme; Freycon, Vincent
 

8. Mechanical analysis of the strains generated by water tension in plant stems. Part I: stress transmission from the water to the cell walls - Alméras, Tancrède; Gril, Joseph
 

9. Les équipements d'investigation du Gis Silvolab-Guyane - Weigel, Jean; Julliot, Catherine; Petronneli, Pascal
 

10. Comparison of physical and mechanical properties of tension and opposite wood from ten tropical rainforest trees from different species - Ruelle, Julien; Beauchene, Jacques; Thibaut, Anne; Thibaut, Bernard
 

11. Régénération forestière naturelle : de la graine à la jeune tige - Baraloto, Christopher
 

12. Télédétection et aménagement forestier tropical : les pistes d'exploitation - Gond, Valérie; Féau, Christian; Pain-Orcet, Michelle
 

13. Le rôle de la faune sur la régénération forestière naturelle - Charles-Dominique, Pierre
 

14. Mechanical analysis of the strains generated by water tension in plant stems. Part II: strains in wood and bark and apparent compliance - Alméras, Tancrède
 

15. Colour and decay resistance and its relationships in Eperua grandiflora - Amusant, Nadine; Fournier, Meriem; Beauchêne, Jacques
 

16. Genetic variation for growth, morphological, and physiological traits in a wild population of the Neotropical shade-tolerant rainforest tree Sextonia rubra (Mez) van der Werff (Lauraceae) - Scotti, Ivan; Calvo-Vialettes, Leticia; SCOTTI-SAINTAGNE, Caroline; Citterio, Maurizio; Degen, Bernd; Bonal, Damien
 

17. Élaboration d'un diagnostic post-exploitation par télédétection spatiale pour la gestion des forêts de Guyane - Gond, Valéry; Guitet, Stéphane
 

18. Sylviculture en forêt tropicale humide guyanaise - Demenois, Julien; Gourlet-Fleury, Sylvie; Fuhr, Marc; Jourget, Jean-Gaël
 

19. L'agriculture itinérante sur brûlis dans les bassins du Maroni et de l'Oyapock : dynamique et adaptation aux contraintes spatiales - Renoux, François; Fleury, Marie; Reinette, Yann; Grenand, Pierre; Grenand, Françoise
En annexes : 10 photographies (vue aérienne du bourg de Maripasoula en 2001, brûlis d'abattis à Loka, plantation et usages du manioc, parcelle de culture d'arachide,...)

20. Évolution du couvert forestier du bassin du Congo mesurée par télédétection spatiale - Mayaux, Philippe; Gond, Valéry; Massart, Michel; Pain-Orcet, Michelle; Achard, Frédéric
 

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