Evaluación preliminar de técnicas de restauración activa en la diversidad y composición florística en áreas degradadas por agricultura en el parque universitario “Francisco Vivar Castro”

The development of agricultural activities implies the loss of native vegetation cover and land degradation due to a series of anthropic activities carried out during its execution. The objective of this study was to contribute to the knowledge of ecosystem restoration through the preliminary evaluation of the implementation of active restoration techniques in the diversity and floristic composition of areas degraded by agriculture. The study was carried out in an area located in the upper middle part of the “Francisco Vivar Castro” University Park. For this purpose, 15 plots of 2 × 2 m were established, where floristic information was collected; and, subsequently, three treatments were applied, which were: mechanical eradication of invasive species (T1) such as Pteridium esculentum and grass (Cynodon dactylon, Cyperus rotundus and Melinis minutiflora), soil transposition (T2) using 15 soil samples from the reference ecosystem (forest), each with dimensions of 40 × 40 × 10 cm, installed as a nucleus with a number of three per plot of 2 × 2 m and control (T3) control group. These treatments were applied randomly at the study site. Before the application of the treatments, the vegetation was composed of a total of 29 species and 20 families (17 herbaceous, 11 shrubs and one tree). After the application of the treatments, during a 6-month monitoring period, a total of 38 species and 25 families were recorded. Treatment T1 showed a decrease in the average specific richness of shrubs and a reduction in the abundance of herbs and shrubs, mainly affecting species such as Arcytophyllum setosum, Gaultheria reticulata and Viburnum triphyllum with zero individuals at the end of the evaluation period. In contrast, in the T2 treatment there was an increase in the average specific richness and a decrease in abundance, nine new species were identified for the herbaceous stratum such as Galium sp, Oxalis sp, Thunbergia alata, Phytolacca bogotensis, Hydrocotyle leucocephala, Gamochaeta sp, Dennstaedtiaceae sp, Spermacoce tenuior and a shrub Rubiaceae sp The application of the treatments had different impacts on the richness and abundances for the shrub and herbaceous strata, highlighting the contribution in species richness made by treatment T2, which suggests as a favorable technique in the recovery of the composition and diversity of ecosystems altered by agricultural activities.

• Autor principal: Vera Abad, Angel Alcivar (author)
• Formato: bachelorThesis
• Idioma: spa
• Publicado em: 2024
• Assuntos: ECOSISTEMA DE REFERENCIA; ESPECIES INVASIVAS; RESTAURACION ECOLOGICA
• Acesso em linha: https://dspace.unl.edu.ec/jspui/handle/123456789/30536