Listar Institutos de Investigación por título
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Seasonal gas exchange and water relations in juveniles of two evergreen neotropical savanna tree species with contrasting regeneration strategies
(Trees 25(3): 473-483, Venezuela, 2011)Colonization dynamics of woody species into grasslands in Neotropical savannas are determined by two main factors: plant-available moisture and fire. Considering seasonality of precipitation and high fire frequency in these ... -
Seasonal variations in leaf gas exchange of platain cv. Hartón (Musa AAB) under different soil water conditions in a himid tropical region
(2005)The seasonal effect of soil water availability on leaf gas exchange of plantain plants cv. Hartón growing on two different texture soils (loamy and clayey) were evaluated. Soil water deficits corresponded to 48, 24 and 4 ... -
Seed dispersal in Palicourea rigida H.B.K, a common treelet species from neotropical savannas
(2001)The dispersal system of Palicourea rigida (Rubiaceae), a common woody species of neotropical savannas, was studied in a seasonal Venezuelan savanna. Production and consumption of fruits, dispersal agents, feeding ... -
Seed dispersal in Palicourea rigida, a common treelet species from neotropical savannas
(SABER ULA, 2005-01-26)Seed dispersal in Palicourea rigida, a common treelet species from neotropical savannas (Wütherich, Dirk † ; Azócar, Aura; García, Nuñez, Carlos and Silva, Juan F. ) Abstract The dispersal system of Palicourea ... -
Seed production and soil seed bank in three evergreen woody species from a neotropical savanna
(SABER ULA, 2001)Seed production and soil seed bank in three evergreen woody species from a neotropical savanna (Azócar, Aura; García, Nuñez, Carlos and Silva, Juan F. ) Abstract Results of a 3-y study on the populations of three ... -
Selvas y bosques de montaña
(Venezuela, 2003) -
Selvas y bosques nublados de Venezuela
(Medina, E., Huber, O., Nassar, J., Navarro, P. Recorriendo el paisaje vegetal en Venezuela. Ediciones IVIC, Instituto Venezolano de Investigaciones Científicas. Caracas, Venezuela. pp. 125-155, Venezuela, 2013) -
Semilla, actores e incertidumbres en la producción papera de Los Andes de Mérida. Realidades y escenarios bajo el contexto político vigente.
(SABER ULA, 2005-11-14)El presente trabajo presenta una visión de síntesis sobre los actores sociales involucrados en la problemática de la producción-importación de la semilla de papa. Se argumenta que estos actores institucionales y sociales ... -
Sensitivity of soil restoration indicators during paramo succession in the high tropical Andes: chronosequence and permanent plot approaches
(Restoration Ecology 17(5): 619-628, Venezuela, 2009-09)The aim of this study was to analyze indicators of soil restoration during secondary succession in a heterogeneous valley in the high tropical Andes. A combination of chronosequence and permanent plot methods was used to ... -
Shrubs as foundation species in a high tropical alpine ecosystem: a multi-scale analysis of plant spatial interactions
(Plant Ecology and Diversity, 2014-09)Background: Studies on plant–plant interactions in alpine ecosystems show a strong bias for temperate vs. tropical latitudes and pay limited attention to the implications of biophysical heterogeneity beyond the local plant ... -
Sistema agroecológico Piaroa en la Reserva Forestal Sipapo. Un enfoque ecológico del paisaje
(Venezuela, 2005-07)Los patrones de distribución de las Unidades Ecológicas de Paisaje (UEP) derivados de las actividades agrícolas de cuatro comunidades de la etnia Piaroa en la selva amazónica, son descritos y analizados en relación con los ... -
Sistema de clasificación ecológico y mapas de ecosistemas: Enfoque conceptual-metodológico para Venezuela.
(Venezuela, 2013-01)El objetivo de este trabajo es presentar una propuesta metodológica de clasificación de la cobertura de la tierra bajo un enfoque ecológico que se estructura en tres niveles o escalas espaciales: las ecorregiones, los ... -
Spatial heterogeneity, land use and conservation in the cerrado region of Brazil
(2006)Aim This paper presents a spatial classification of the environmental and ecological diversity of the cerrado region of Brazil, as well as an appraisal of the levels of conversion to agriculture and of the extent of land ... -
Spatial relations and population structure of a dominant tree along a treeline ecotone in the Tropical Andes: interactions at gradient and plant-neighbourhood scales
(Plant Ecology and Diversity 6(3-4): 343-353, Venezuela, 2013)Background: Studies in temperate mountains suggest that plant-plant interactions modulate tree establishment above the forest line. In tropical mountains worldwide this issue remains largely unexplored. Aims: To analyse ...