Efecto de un tratamiento silvicultural sobre el crecimiento de latizales en el bosque tropical de montaña de la Estación Científica San Francisco
This research had the propose to contribute to the knowledge of the dynamics of the tropical mountain forest in the south of Ecuador through the assessment of growth and population structure of forest species in youthful stage in order to strengthen the scientific basis for its management and conser...
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| Format: | bachelorThesis |
| Sprache: | spa |
| Veröffentlicht: |
2014
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| Online Zugang: | http://dspace.unl.edu.ec/jspui/handle/123456789/10605 |
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Tag hinzufügen | Zusammenfassung: | This research had the propose to contribute to the knowledge of the dynamics of the tropical mountain forest in the south of Ecuador through the assessment of growth and population structure of forest species in youthful stage in order to strengthen the scientific basis for its management and conservation. The work complements a series of studies initiated in 2003, where three micro-watersheds were considered denominates: Q2, Q3 and Q5. In the year 2004 a silvicultural treatment was applied to two intensities of intervention: strong and mild in micro watershed Q5 and Q3 respectively and the watershed area constituted the area witness. The intervention consisted on eliminating mature individuals of species of little commercial interest, bigger to 20 cm of DAP that competed with selected forest species. It was evaluated and compared the current state of the natural regeneration to know the influence of the silvicultural treatment in the development of the same one. Also, the percentage of canopy opening was determined by using the spherical densiometer. The structure and floristic composition in the intervention areas and the witness area was represented by the density, abundance, frequency and dominance of species. Nectandra lineatifolia (Ruiz & Pav.), Piper sp., Hedyosmun scabrum (Ruiz & Pav.) Hyeronima moritziana Pax & K. Hoffm, Graffenrieda emarginata (Ruiz & Pav.), Inga acreana Harms, Ruagea pubesens H.Karst, Clusia elliptica Kunth, Guarea pterorhachis Harms, and Psychotria sp. The area of mild intervention presents better quality regeneration that the area witness and the area of strong intervention, which share a high percentage of deficient phytosanitary status. The subjected areas to intervention, presented more open canopies that the area witness, positively influencing about the diversity and growth of the species. The growth in basal diameter and height didn't register significant differences between the managed areas and of reference, being the increase equal in both cases. Inverse correlations were determined between the basal area removed during the silvicultural treatment and the diversity of species, ensuring that the natural and anthropogenic disturbances modify the floristic composition of these forests. However, there were positive associations between the opening of the arboreal canopy and the increment of growth. Keywords: tropical mountain forest, silvicultural treatment |
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