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Modelling competitive ability of neotropical savanna grasses: Simulation of shading and drought impacts on biomass production
(Ecological Informatis 13: 57-69, 2013)
In this paper, we develop a technique to model the spatial distribution of shoots along vertical and horizontal
dimensions of a plant community. We use it to simulate the growth of a tropical savanna near the city of ...
El fuego y los árboles de las sabanas
(Medina E, Huber O, Nassar JM & Navarro (Eds). Recorriendo el paisaje vegetal de Venezuela. Ediciones IVIC., 2013)
A matrix model for the population dynamics of Hyptis suaveolens, an annual weed
(2009-12-08)
Hyptis suaveolens is a neotropical annual weed that invades savanna agricultural systems. Although fire, grazing and soil disturbances have been proposed to cause its local dominance, these factors have not been experimentally ...
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 ...
Diversidad, estabilidad y dinámica del paisaje en comunidades de sabana
(2009-07-15)
En los bordes de la Mesa de Guanipa (Venezuela) muestreamos comunidades arbóreas en distintas formas de relieve con el objetivo de estudiar las relaciones entre riqueza de especies (S) y diversidad (H’) con la estabilidad ...
Información Investigador: Silva Armas, Juan Felipe
(2008-09-19)
Resumen Curricular
Obtuvo su Licenciatura en Biología de la Universidad Central de Venezuela en 1968 y el doctorado en Biología de la Universidad de Harvard en 1978. Desde 1969 es profesor de la Facultad ...
Padrões fitogeográficos e sus relação com sistemas de terra no bioma cerrado
(Matiko, S., Pedrosa de Almeida, S. y J.F. Ribeiro (Eds). Cerrado: Ecología e flora.Vol 1. EMBRAPA, BrasiL, pp. 213-228., 2008)
Fire in neotripical savannas
(Encyclopedia of life support systems (EOLSS), developed under the auspices of the UNESCO, EOLSS publishers, Oxford ,UK, [http://www.eolss.net], 2007)
This chapter reviews the main characteristics of tropical savannas and their interactions with fire, a main factor involved in the dynamics of these ecosystems. Burning in savannas generally takes place by the end of the ...
Global change effects on the vegetation of tropical high mountains and savannas
(Tiessen, H., Brklacich, M., Breulmann, G. and Menezes, R. (Eds). Communicating global change science to society. An assessment and case studies. SCOPE 68. Island Press, Washington, pp. 165-169, 2007)