ListarArticulos, Pre-prints (Facultad de Ciencias) por tema "Departamento de Biología"
Mostrando ítems 1-20 de 35
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Agricultural development and biodiversity conservation in the Páramo environments of the Andes of Mérida, Venezuela
(Spehn, E., Liberman, M., Körner, C. (Eds), Estados Unidos, 2006) -
Carbon sequestration potencial of the Neotropical savannas of Colombia and Venezuela
(Lal, R., Cerri, C., Bernoux, M., Etchevers, J., Cerri, E. (Eds)., Estados Unidos, 2006) -
Chagas disease inapparent infection in asymptomatic individuals from a Yukpa ethnic community in western Venezuela
(2011-12-13)Inapparent infections by Trypanosoma cruzi were detected, for the first time, in symptomless seropositive healthy individuals from a Yukpa ethnic community in western Venezuela where Chagas disease had not been previously ... -
Detección de agentes hemotrópicos en una explotación ganadera utilizando PCR y DGGE
(2014-07-21)La siguiente investigación presenta los resultados de las evaluaciones diagnósticas, realizadas por PCR, para agentes hemotrópicos, en ganado bufalino y bovino (n=77), coexistentes en una misma explotación agropecuaria. ... -
Detección de Anaplasma marginale y Trypanosoma vivax en garrapatas de ganado bovino empleando la reaccion en cadena dela polimerasa
(2014-06-19)Utilizando la metodología PCR se detecta en garrapatas de ganado obtenidas bajo condiciones de campo, la presencia de ADN circulante para Anaplasma marginale y Trypanosoma vivax, dos de los más importantes agentes hemotrópicos ... -
Determination of water-soluble and total extractable polyphenolics in biomass, necromass and decomposing plant material using near-infrared reflectance spectroscopy (NIRS)
(2005)Near infrared reflectance spectroscopy (NIRS) was used to predict the water-soluble and total extractable polyphenolics of plant material. Different life forms (forbs, grasses, shrubs, giant rosettes), organs (leaves, ... -
Dinámica sucesional de la vegetación en un sistema agrícola con descanso largo en el Altiplano central boliviano
(2006)Se estudió la dinámica sucesional de la vegetación en parcelas en descanso agrícola en el Altiplano central boliviano, donde se practica una agricultura con descansos largos en sectores manejados comunalmente. El objetivo ... -
Effect of dyke construction on water dynamics in the flooding savannahs of Venezuela
(2006)In the flooded savannahs water is the main factor determining the ecosystem and its change. During flooding, the level of water and the duration of flooding are highly dependent on the relative height position of the ecosystem ... -
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 ... -
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. ... -
Functional diversity of wetland vegetation in the high-andean Páramo, Venezuela
(Spehn, E., Liberman, M., Körner, C. (Eds), Estados Unidos, 2006) -
Genetic typing of Trypanosoma cruzi isolates from different hosts and geographical areas of western Venezuela
(2011-12-13)A total of 72 Trypanosoma cruzi isolates from different hosts and geographical regions of western Venezuela, where Chagas disease is endemic, were typed using ribosomal and mini-exon gene markers. The isolates were obtained ... -
Grazing impact on vegetation structure and plant species richness in an old-field succession of the venezuelan Páramos
(Spehn, E., Liberman, M., Körner, C. (Eds)., Estados Unidos, 2006) -
Metodología diagnóstica para hemoparásitos dentro de la ganadería bovina con énfasis en la reacción en cadena de la polimerasa y su variante múltiple
(2014-06-19)En la detección de algunos agentes hemáticos que comprometen la salud del ganado bovino, se emplean con mayor frecuencia, métodos parasitológicos directos y serológicos, muchas veces cuestionados dadas sus bajas especificidad ... -
Miasis cutánea furuncular por Dermatobia hominis en Mérida, Venezuela. Reporte de caso
(Venezuela, 2015-01)Se presenta para paciente femenina, con clínica de miasis cutánea furuncular, confirmación entomológica de estadio parasitario obligado L3 de Dermatobia hominis. Se señalan los detalles clínicos, epidemiológicos y de ... -
Modelling the effects of fire and competition on the dynamics of neotropical savannas: from plants to community
(2005)Savannas are one of the most extensive biomes of the world and are subject to intense pressures due to large human populations using this ecosystem, even though it is characterized by low crop yields and poor nutritional ... -
Nitrogen and phosphorus as limiting factors for growth and primary production in a flooded savanna in the Venezuelan Llanos
(2006)The effects of N, P, NP and NPKS application on plant growth, above-ground primary production and N and P accumulation in the above-ground biomass of a flooded savanna were assessed over two growth cycles. Application ...