Termites (Isoptera: Termitidae, Rhinotermitidae) in Pinus caribaea plantations in the Colombian Orinoco basin ; Termitofauna (Isoptera: Termitidae, Rhinotermitidae) en plantaciones de Pinus caribaea en sabanas de la Orinoquia Colombiana
Termite abundance and diversity on Pinus caribaea stands established on lands previously occupied by a seminatural savanna and artificial grass were examined. Sampling was done during the transition from the dry to the rainy season in 2013 and 2014 (March - April) and the rainy to the dry season in 2013 (November - December) in plantations established in the Colombian Orinoco basin region, commonly known as “Mesa de San Pedro” (Villanueva, Casanare). Using the transect protocol, stands of Pinus caribaea of four different ages, and areas with introduced grass and seminatural savanna were sample... Mehr ...
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Dokumenttyp: | Artikel |
Erscheinungsdatum: | 2018 |
Verlag/Hrsg.: |
Sociedad Colombiana de Entomología - SOCOLEN y Universidad del Valle - Univalle
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Schlagwörter: | Xilófago / manejo forestal / usos del suelo / Xylophagous / forest management / land uses |
Sprache: | Spanish |
Permalink: | https://search.fid-benelux.de/Record/base-29258043 |
Datenquelle: | BASE; Originalkatalog |
Powered By: | BASE |
Link(s) : | https://revistas.univalle.edu.co/index.php/SOCOLEN/article/view/6544 |
Termite abundance and diversity on Pinus caribaea stands established on lands previously occupied by a seminatural savanna and artificial grass were examined. Sampling was done during the transition from the dry to the rainy season in 2013 and 2014 (March - April) and the rainy to the dry season in 2013 (November - December) in plantations established in the Colombian Orinoco basin region, commonly known as “Mesa de San Pedro” (Villanueva, Casanare). Using the transect protocol, stands of Pinus caribaea of four different ages, and areas with introduced grass and seminatural savanna were sampled. Termite fauna was composed of twenty eight morphospecies belonging to the Termitidae (Apicotermitinae, Nasutitermitinae, Termitinae, Syntermitinae) and Rhinotermitidae (Heterotermitinae and Rhinotermitinae) families. Seven year-old pine stands without pruning or thinning had the most diversity, while natural savanna had a greater number of species than introduced grasses. No significant differences were observed between sampling seasons. The humivorous species Anoplotermes sp. 1 and the xylophagous Heterotermes tenuis were the most common in pine stands, while several species belonging to the humivorous genus Anoplotermes spp. predominated in pastures and savanna vegetation. Changes in the microclimate and increased availability of food resources in older pine stands may explain the higher diversity and abundance of termites in this monoculture as compared to pastures or savanna vegetation, suggesting that termites are interacting with the natural dynamics of plantations by contributing to the decomposition of cellulosic material and the improvement of soil fertility. ; Se estimó la composición de termitas asociada a plantaciones de Pinus caribaea de diferentes edades, establecidas en terrenos previamente ocupados por sabana seminatural y pastos artificiales, en la meseta de San Pedro en la Orinoquía colombiana (Villanueva, Casanare). Utilizando el protocolo del transecto, se muestrearon cuatro edades de plantación y áreas con pastos artificiales y sabana seminatural en dos épocas climáticas: húmeda 2013 y 2014 (marzo - abril) y seca de 2013 (noviembre - diciembre). La termitofauna encontrada estuvo compuesta de 28 especies pertenecientes a las familias Termitidae (Apicotermitinae, Nasutitermitinae, Termitinae, Syntermitinae) y Rhinotermitidae. Las plantaciones de siete años con poda y sin entresaca fueron las más diversas y la sabana seminatural alcanzó un mayor número de especies con respecto a los pastos introducidos, sin variaciones importantes en época de muestreo. La especie humívora Anoplotermes sp. 1 y la xilófaga Heterotermes tenuis fueron las más frecuentes en todas las edades de plantación, mientras en los otros usos del suelo el grupo más frecuente fue el humívoro con predominancia de Anoplotermes spp. Gracias al mejoramiento del microclima y al aumento de la disponibilidad de recursos alimenticios en plantaciones de pino de edades avanzadas, la diversidad y abundancia de termitas en este monocultivo es significativamente mayor que en pastos o sabanas, lo que sugiere que las termitas están interactuando con la dinámica natural de las plantaciones al contribuir en la descomposición del material celulósico y el mejoramiento de la fertilidad de los suelos.