Listar Unidades de Investigación de la Facultad de Ciencias por título
Mostrando ítems 294-313 de 1111
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Facilitation and edge effects influence vegetation regeneration in old-fields at the tropical Andean forest line
(Alemania, 2015)Questions: Do local plant-plant interactions and facilitation play an important role in vegetation dynamics after disturbance in the high tropical Andes? In particular, does the dominant shrub Baccharis prunifolia have an ... -
Factors controlling decomposition of soil organic matter in fallow systems of the high tropical Andes: A field simulation approach using 14C- and 15N- labelled plant material
(2006)N-rich (C:N ¼ 27) and N-poor (C:N ¼ 130) wheat straw, labelled with 14C and 15N, was incubated for 2 yr in two major ecosystems of the upper elevation belt of cultivation in the high Andes: the moist Paramo (precipitation ... -
Fenología comparada de comunidades de páramo
(Venezuela, 1993-06-29) -
Fermion localization on thick branes
(SABER ULA, 2007-03-19)Fermion localization on thick branes. (Melfo, Alejandra; Pantoja, Nelson and Tempo, José David) Abstract We consider chiral fermion confinement in scalar thick branes, which are known to localize gravity, coupled ... -
Fire as a factor influencing the diversity of life forms in neotropical savannas
(SABER ULA, 2005-01-25)Artículo publicado en:Pereira, R.C., Nasser L.C.B. (eds). 1996. Biodiversity and Sustainable Production of Food and Fibers in the Tropical Savannas, EMBRAPA, Brazil, pp. 6-9. -
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], Reino Unido, 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 ... -
La flora de los páramos
(1981) -
Floristic, structural and physiognomic recovery of tropical dry forest in La Jarreta, Península de Guanahacabibes
(Revista Anales de la Academia de Ciencias de Cuba 4(1):1-17., Cuba, 2014) -
Floristic, structural and physiognomic recovery of tropical dry forest in La Jarreta, Península de Guanahacabibes.
(Revista Anales de la Academia de Ciencias de Cuba 4(1):1-17., Cuba, 2014-05)In La Jarreta, Peninsula of Guanahacabibes, part of the TDF was assimilated for livestock; at the end of this practice, the vegetation has been recovered, giving place to a mosaic of successional phases, which we aim to ... -
Flowering and fruit production dynamics of sweet pepper (Capsicum chinense Jacq) under different shade conditions in a humid tropical region
(2006)Growing sweet pepper (C. chinense) under shade has increased in the region south of Lake Maracaibo in Venezuela. We studied the effects of different shade conditions on the dynamics of flowering and fruit production of C. ... -
Flujos hídricos y erosión del suelo en dos pasturas de la cuenca del río Culegría, municipio Zea, Estado Mérida
(Venezuela, 2014-07-11)La estabilidad de un caudal base en los afluentes permanentes de montaña, depende principalmente de los drenajes superficiales, subsuperficiales y profundos de los cuales a su vez dependen de los flujos hídricos canalizados ... -
Formaciones vegetales en dos Páramos venezolanos contrastantes. Análisis de la relación entre vegetación y ambiente
(Venezuela, 2014-01-31)En este trabajo se presenta el estudio de la estructura de las comunidades vegetales de dos páramos venezolanos (Gavidia, Estado Mérida; y El Arenal-Pajarito Estado Trujillo), además del análisis de la diversidad y ... -
Formation of vortices in first order phase transitions
(SABER ULA, 2003-12-05)Formation of vortices in first order phase transitions (Melfo, Alejandra; Perivolaropoulos, Leandros) Abstract Using a toy model Lagrangian we investigate the formation of vortices in first order phase transitions. ... -
Formulación de Einsenhart de la mecánica clásica
(SABER ULA, 2007-11-06) -
Fracturas en distribuciones autogravitantes cargadas
(SABER ULA, 2007-11-02) -
Freezing avoidance in tropical Andean bamboos
(The Journal of the American Bamboo Society 27:1-10., 2014)Frost resistance was compared in five species of different life forms in the neotropical woody bamboo genus Chusquea growing along a cloud forest-paramo gradient, between 2250-4010 m a.s.l. in the Venezuelan Andes. C. ... -
Freezing avoidance in tropical Andean bamboos
(LXth World bamboo Congress proceedings. Sección 2, Massachusetts, USA. pp. 247-257, Estados Unidos, 2012-04-15)Frost resistance was compared in five species of different life forms in the neotropical woody bamboo genus Chusquea growing along a cloud forest-paramo gradient, between 2250-4010 m a.s.l. in the Venezuelan Andes. C. ...