Mostrando 1,721 - 1,740 Resultados de 37,890 Para Buscar '"forestal"', tiempo de consulta: 0.47s Limitar resultados
  1. 1721
    “…BACKGROUND: A large proportion of the tropical rain forests of central Africa undergo periodic selective logging for timber harvesting. …”
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  2. 1722
    por Wear, David N., Coulston, John W.
    Publicado 2015
    “…Using detailed forest inventory data for the conterminous US, we estimate forests’ current net sequestration of atmospheric C to be 173 Tg yr(−1), offsetting 9.7% of C emissions from transportation and energy sources. …”
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  3. 1723
    “…Environment and space jointly explained ~60% of the variation in species composition; soil variables alone explained 21.6%, slightly more than the topographic variables that explained 15.7%; topography and soil together explained 27%, slightly inferior to spatial variables that explained 34%. The BDGS forest was controlled both by the spatial and environmental variables, and the results were consistent across different life forms and life stages.…”
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  4. 1724
    por Duncanson, L., Rourke, O., Dubayah, R.
    Publicado 2015
    “…Accurate quantification of forest carbon stocks is required for constraining the global carbon cycle and its impacts on climate. …”
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  5. 1725
    “…Knowledge of feeding habits of small rodents is necessary for understanding food webs, trophic structure, and plant–animal interactions in Neotropical forests. Despite several studies that have investigated community structure and feeding behavior of rodents, large gaps remain in our understanding of their guild occupancy. …”
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  6. 1726
    “…Protected areas (PAs) have been established to conserve tropical forests, but their effectiveness at reducing deforestation is uncertain. …”
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  7. 1727
  8. 1728
    “…This work describes the biology and ecology of Alchisme grossa (Fairmaire) (Hemiptera: Membracidae) in a rain cloud forest of Bolivia. This subsocial membracid utilizes two host-plant species, Brugmansia suaveolens (Humb. & Bonpl. ex Wild) Bercht. & J.Presl and Solanum ursinum (Rusby) (both Solanaceae), the first one being used during the whole year and the second one almost exclusively during the wet season. …”
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  9. 1729
    “…Dung beetle community structures changes due to the effects of destruction, fragmentation, isolation and decrease in tropical forest area, and therefore are considered ecological indicators. …”
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  10. 1730
    “…Features of the musk16S rRNA gene showed that mated Chinese forest musk deer have both a greater Shannon diversity (p < 0.01) and a greater number of estimated operational taxonomic units than unmated ones; many bacterial genera were overrepresented in unmated Chinese forest musk deer males. …”
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  11. 1731
  12. 1732
    “…Despite the importance of biomass as a primary energy supplier in existing and future scenarios, emission metrics for CO(2) from forest bioenergy are only available on a case-specific basis. …”
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  13. 1733
    por Wang, Huazhen, Yang, Fan, Luo, Zhiyuan
    Publicado 2016
    “…BACKGROUND: The stability of Variable Importance Measures (VIMs) based on random forest has recently received increased attention. …”
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  14. 1734
    “…A rich structural diversity in forests promotes biodiversity. Forests are dynamic and therefore it is crucial to consider future structural potential when selecting reserves, to make robust conservation decisions. …”
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  15. 1735
    “…However, it remains unclear how R(H) responds to warming in subtropical forests. Here, we carried out trenching alone and trenching with warming treatments to test the climate warming effect on R(H) in a subtropical forest in southwestern China. …”
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  16. 1736
    “…Rising global demand for natural rubber is expanding monoculture rubber (Hevea brasilensis) at the expense of natural forests in the Old World tropics. Conversion of forests into rubber plantations has a devastating impact on biodiversity and we have yet to identify management strategies that can mitigate this. …”
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  17. 1737
    “…In New Zealand there has been a long association of Phytophthora diseases in forests, nurseries, remnant plantings and horticultural crops. …”
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  18. 1738
    “…Forest management activities, such as tree thinning, alter forest ecology, including key components of forest ecosystems, including fungal communities. …”
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  19. 1739
  20. 1740
    “…Random forests consisting of an ensemble of regression trees with equal weights are frequently used for design of predictive models. …”
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