Buscar
Mostrando ítems 41-50 de 318
Identification of Successional Stages and Cover Changes of Tropical Forest Based on Digital Surface Model Analysis
(Ieee-inst Electrical Electronics Engineers Inc, 2016-12-01)
Forests are in a permanent state of change due to natural and anthropogenic processes. Long-term time series analysis makes it possible to reconstruct the forest history and perform a multitemporal analysis on the cause ...
Spatial distribution of the eddy diffusion coefficients in the plasma sheet during quiet time and substorms from THEMIS satellite data
(Blackwell Publishing Ltd, 2011)
During the last decade, a number of studies have shown that turbulent processes in the plasma sheet are very important for the analysis of the formation of quasi-stable plasma sheet configurations. The existence of this ...
Molecular evidence of hybrid zones of cedrela (Meliaceae) in the yungas of northwestern Argentina
(2016)
In the Yungas of Northwestern Argentina, three endangered species of Cedrela (C. angustifolia, C. saltensis, and C. balansae) follow altitudinal gradients of distribution with contact zones between them. We sampled 210 ...
Poliaminas (Alexigen) como inductores de los mecanismos de defensa estructural en plantas de Asparagus officinalis "Espárrago" frente a Stemphillium vesicarium "mancha Púrpura" en el valle de Virú, Perú 2012
(Universidad Nacional de TrujilloPE, 2023)
Las plantas tienen mecanismos de defensa, los mismos que son activados frente al ataque de agentes causantes de enfermedades.
Dentro de estos mecanismos tenemos a las Poliamidas (PA), que son compuestos policatiónicos ...
Comprehensive inventory of true flies (Diptera) at a tropical site
(2018-12-01)
Estimations of tropical insect diversity generally suffer from lack of known groups or faunas against which extrapolations can be made, and have seriously underestimated the diversity of some taxa. Here we report the ...
Biodiversity losses and conservation responses in the Anthropocene
(2017-04-21)
Biodiversity is essential to human well-being, but people have been reducing biodiversity throughout human history. Loss of species and degradation of ecosystems are likely to further accelerate in the coming years. Our ...
Response of saproxylic insect communities to logging history, tree species, stage of decay, and wood posture in the central Nearctic boreal forest
(Northeast Forestry University, 2018-09)
Saproxylic insect assemblages are essential functional components of forest ecosystems that can be affected by forest management. We used a split-plot ANOVA design to analyze differences in selected saproxylic insects (all ...
Del cultivo poblador al agronegocio forestal: acerca del cambio del modelo de desarrollo productivo y sus consecuencias socialesFrom a colonizing culture to forestry agribusiness: about the changes in the model of productive development and its social consequencesDo cultivo colonizador ao agronegócio florestal: sobre a mudança do modelo de desenvolvimento produtivo e as suas consequências sociais
(Universidade Federal de Juiz de Fora, 2015-12)
El trabajo aborda los impactos de la globalización de la agricultura, con la inserción del agronegocio, en un territorio local. Para ello, se analiza el cambio de configuración productiva de la provincia argentina de ...