Resumen

CONTENTO YUNGA, Cristian Geovanny  y  AGUIRRE MENDOZA, Zhofre Huberto. Evaluation of passive restoration in three successional stages in an area of the Cristal Natural Reserve, Loja, Ecuador. Rev CFORES [online]. 2024, vol.12, n.2  Epub 02-Ago-2024. ISSN 2310-3469.

The objective of the study was to evaluate the differences in structure, composition and diversity in the three successional stages of recovery in the El Cristal Natural Reserve, as essential elements of passive restoration. Three successional stages of 10-20, 20-30 and 30-40 years of abandonment and a reference ecosystem were studied. In each successional stage, three plots of 20x20 m were established for trees; within these, 5 subplots of 5x5 m for latizas and 5 subplots of 1x1 m for saplings were nested. Floristic diversity and composition were determined, structural parameters and diversity indices were calculated; and, the succession stages were compared using the Sorensen index. The floristic composition was 14 species in stage one; 15 in the second; 20 in the third and 26 species for the reference ecosystem. Stage one has a Shannon index of 0.74, stages two and three have values of 1.73 and 1.96 respectively, and the reference ecosystem 2.80. The three stages under study show floristic dissimilarity, with similarity index values below 0.69. The recovery of vegetation through natural succession processes is an important in situ restoration strategy, since Andean Forest species are gradually established, which facilitate the formation of ecosystems similar to the reference systems.

Palabras clave : stage; natural succession; diversity; similarity; natural regeneration category..

        · resumen en Español | Portugués     · texto en Español | Inglés     · Español ( pdf ) | Inglés ( pdf )