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Leaf gas exchange in canopy species of a Venezuelan cloud forest
(Biotropica 41(6): 659-664, 2009-11)
Tropical cloud forests are considered humid ecosystems with frequent cloud cover down to the ground surface. However, seasonal variation in precipitation may induce
short-term water stress. For canopy leaves, this water ...
Coupling soil water and shoot dynamics in three grass species: A spatial stochastic model on water competition in Neotropical savanna
(Ecological Modelling 220: 2734 - 2743, 2009-10-24)
Savannas are ecosystems known for their high environmental and economic value. They cover at least 20% of the global land surface and, in some cases, can act as a boundary between tropical rainforest and deserts.Water is ...
LAGOvirtual a collaborative environment for the large aperture GRB observatory
(2009-10-20)
We present the LAGOVirtual Project: an ongoing project to develop platform to collaborate in the Large Aperture GRB Observatory (LAGO). This continental-wide observatory is devised to detect high energy (around 100 GeV) ...
GridChoque: a grid environment to experiment on spherically symmetric general relativistic radiation hydrodynamics
(2009-10-20)
This paper presents a Grid application, GridChoque: a distributed, and a grid based, environment devised to explore the general relativistic spherically radiative stellar collapse using several tools of calculus and ...
Low temperature resistance in saplings and ramets of Polylepis sericea in the Venezuelan Andes
(Acta Oecologica 35(5): 610–613, 2009-10)
The frequent occurrence of all year-round below zero temperatures in tropical high mountains constitutes a most stressful climatic factor that plants have to confront. Polylepis forests are found well above
the continuous ...
Interception of water by pastures of Pennisetum clandestinum Hochst. ex Chiov. and Melinis minutiflora Beauv
(Agricultural and Forest Meteorology 149: 1616-1620, 2009-10)
The conversion of montane cloud forests into pastures for grazing cattle is the main cause of important impacts on rivers and streams in most of the Andes. In order to evaluate the effects of vegetation changes we need to ...
Sensitivity of soil restoration indicators during paramo succession in the high tropical Andes: chronosequence and permanent plot approaches
(Restoration Ecology 17(5): 619-628, 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 ...
Supervivencia e infectividad de formas metacíclicas de Trypanosoma cruzi en alimentos experimentalmente contaminados
(Boletín de malariología y salud ambiental. Vol. XLIX, Nº 1, enero-julio, 2009, 2009-07)
Se registra el tiempo de supervivencia de formas metacíclicas de Trypanosoma cruzi,
obtenidas del tracto digestivo de Rhodnius prolixus, sobre alimentos contaminados experimentalmente.
Observaciones entre 1h y 18h ...
Efecto borde y respuestas funcionales en el establecimiento de Alchornea triplinervia y Myrcia acuminata en un fragmento de selva nublada Andina
(2009-03-03)
La intervención de la selva nublada andina por actividades agropecuarias ha generado su fragmentación, originando remanentes de bosque (fragmentos) inmersos en una matriz de pastizal. A través de la zona de contacto entre ...
Virtual atomic and molecular data centre
(2009-02-09)
A large-scale computational project has been recently launched to develop the Virtual
Atomic and Molecular Data Centre (VAMDC). It involves several research groups from the
European Union (Austria, France, Germany, Italy, ...