Caracterizacion Del Residuo Proveniente De Colonias De Atta Colombica (Hymenoptera : Formicidae) Utilizado En El Proceso De Restauracion En Bosque Seco
Morressier, 2017
Online
unknown
Zugriff:
The pilot plan for the ecological restoration of the tropical dry forest is a project that is carried out within the compensation area of the El Quimbo hydroelectric plant in the department of Huila. It is here, where one of the largest dry forest restoration plans in the country takes place. At present, the residual material from the colonies of the ant arriera Atta colombica is used in the restoration process, where it has been implemented as part of the management of fertilization in order to improve growth conditions, both in the processes of nursery as for the later sowing. This process requires restoring the compensation area of the reservoir in an area greater than 11 thousand hectares, with species adapted to the dry forest. The residual substrate originated from leaf cutter ants (Atta colombica, Hymenoptera: Formicidae) can be used as a natural fertilizer in the propagation of forest species. The objective of this study was to characterize the chemical properties of the residual substrate of the ants. This is how three representative anthills were selected in each of the following plant coverings: Forest (BQ), Open Herbazal (HA) and Dense Shrub (AD). The study was carried out at three depths with respect to the vertical axis of the external piles of the anthills called landfills and described as strata (ESu- superior to 30 cm, EM- medium to 60 cm and EI- inferior to 90 cm) and in Two climatic seasons, dry (September 2016) and humid (December 2016). The pH, the C: N ratio and the concentrations of P, K, Ca, Mg, B and Cu in the substrate were determined. The variables were analyzed by a Combined Analysis of Variance, corresponding to a design of randomized complete blocks with factorial arrangement (3 depths of the waste pile X 3 vegetal coverings) in series of experiments (Same site - different epoch), where the Blocking form corresponded to three-time intervals during the day (6 to 9 a.m., 11 a.m. to 2 p.m., and 4 to 7 p.m.) termed morning (Mn), half day (Md) and afternoon (Td) respectively.The results showed that the pH of the substrates changes with the depth of the anthill, 6.47 for the upper stratum (ESU), 7.34 for the middle stratum (MS) and 7.17 for the lower stratum (EI). The C: N ratio ranged between 3.9 and 12.0, showing thatthe lowest value (highest mineralization rate) is obtained for the interaction of the dry season (ES) with Open Herbazal (HA) and with the lowest depth (EI) . In this same interaction ES: HA: EI, the elements P (11.29 mg / kg), Ca (5.43% ms), Mg (0.89% ms), B (84.57 mg / kg) and Cu (17.77 mg / kg) presented the highest concentrations. The K presented its highest concentration (1.90% m.s) for the wet season (EH) in open herbazal and at the shallowest depth corresponding to the upper third. In the dry season, the same concentration of K was found, but for dense shrub cover and at the same depth (ESu). It is recommended for the propagation of species in its nursery and open field nursery stage, using the waste coming from a depth of the lower layer of the anthill, collected in the dry season and under cover of an open herbage, mixed with a proportion of waste from the upper stratum, to provide a substrate with the best nutritional content.
Titel: |
Caracterizacion Del Residuo Proveniente De Colonias De Atta Colombica (Hymenoptera : Formicidae) Utilizado En El Proceso De Restauracion En Bosque Seco
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Autor/in / Beteiligte Person: | Vargas, Alexandra Fonseca |
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Veröffentlichung: | Morressier, 2017 |
Medientyp: | unknown |
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