Examinando por Materia "Comejenes"
Mostrando 1 - 2 de 2
- Resultados por página
- Opciones de ordenación
Ítem Diversidad de termitas en plantaciones comerciales de Pinus Caribaea Morelet en la meseta de San Pedro (Casanare)Beltrán Díaz, Maira Alexandra; Pinzón Florián, Olga PatriciaThe Colombian Orinoquía is a current growing area of planted forest in the country, in which fast-growing species such as: Acacia mangium, Eucalyptus pellita and Pinus caribaea are predominant.. Monitoring local diversity helps to estimate the degree of sustainability of forestry activities through conservation bioindicators. Termites are one of the dominant invertebrate groups within the edafofauna and are considered as bioindicators, helping to maintain soil structure and functionality and are sensitive to environmental disturbances. The project was designed to estimate and compare the termite assemblage in plantations of P. caribaea of different ages, established on lands previously occupied by savannas and pastures and also to examine their relation with the supply of food. Using both the protocol of the transect modified and the line of intersection (LIS), termite samples were taken from soils, mounds and wood pieces, which were identified at the genus / morphospecies level and were classified by trophic groups. We included also dasometric variables and physicochemical characterization of soils which were correlated with data on diversity and richness of termites. Changes in diversity, abundance of species and functional groups of termites were found, where the humivorous group (Anoplotermes msp. 3) was the most dominant and diverse in savannas and pastures, while the xylophagous (Heterotermes tenuis) and the humivorous (Anoplotermes sp.1) were in the plantations of all ages. A positive relationship was found between the composition of termites and Carbon organic soil and a negative relation with canopy opening. The composition of trophic groups was also related to the degree of decomposition of the pieces of wood and to the accumulation of needles on the soil of the plantations. Termites are sensitive to changes in land use, transforming their population dynamics with the establishment of plantations and the modification of food supply as well.Ítem Informe final de la pasantía realizada con el convenio Universidad Distrital y programa desarrollo y paz del Magdalena medio titulado estudio preliminar sobre el estado general de las plantaciones del proyecto Carare opón y sus termitas asociadas(Universidad Distrital Francisco José de Caldas) Fajardo Henao, Andrea del Pilar; Moreno Gutiérrez, Jaime Alberto; Castro, ÁlvaroA raíz del convenio celebrado entre la Universidad Distrital Francisco José de Caldas, Cormagdalena y el programa desarrollo y paz del Magdalena medio, se formuló un plan de reactivación forestal para el proyecto Carare Opón. Bajo este marco se realizó el presente estudio que evalúa el estado general de las plantaciones de Abarco (Cariniana piryformis) con especial énfasis en la posible detección de problemas fitosanitarios, de la misma forma se hace una contribución importante al conocimiento de los termes realizando una caracterización de los mismos, ya que son insectos de los que se sabe muy poco y representan riesgo como plaga en las zonas húmedas tropicales del país bajo la modalidad de pasantía, el estudio recoge en su metodología un laborioso ejercicio de consecución y análisis de información secundaria, así como el origen de nuevos datos, que se espera, sean-