Abstract

JARAMILLO DIAZ, Nelson; AGUIRRE MENDOZA, Zhofre  and  YAGUANA PUGLLA, Celso. Floristic component of the dry forest, Bramaderos Sector, Guachanama Parish, Paltas Canton, southwest of the province of Loja, Ecuador. Arnaldoa [online]. 2018, vol.25, n.1, pp.87-104. ISSN 1815-8242.  http://dx.doi.org/http://doi.org/10.22497/arnaldoa.251.25105.

In the Bramaderos Sector, Guachanama Parish, province of Loja, Ecuador, we studied the floristic diversity in semideciduous forest and gallery forest, in its arboreal, shrub and herbaceous components. For the arboreal stratum, plots of 20 x 20 m were installed, registering individuals equal or greater than 10 cm DBH, subdivided in 3 subplots of 5 x 5 m for the shrub layer and 1 x 1 m for the herbaceous stratum. In the semideciduous forest, 31 sampling units were established, and in the gallery forest, 18 sampling units. In the semideciduous forest, 561 trees were registered, belonging to 24 species, 24 genera and 15 families; the dominant and ecologically most important species are Ceiba trischistandra, Eriotheca ruizii and Bursera graveolens; in the shrub component, 2076 individuals corresponding to 45 species, 36 genera and 16 families; in the herbaceous component, 1488 individuals of 44 species, 38 genera and 17 families. In the gallery forest, 424 trees were registered, belonging to 33 species, 29 genera and 22 families; the ecologically important species are Pisonia aculeata, Fulcaldea laurifolia, Eriotheca ruizii, Acacia macracantha and Ceiba trischistandra; in the shrub component, 630 individuals belonging to 33 species, 30 genera and 16 families, and the herbaceous with 630 individuals established in 24 species, 24 genera and 13 families. There are significant differences of floristic elements between the two types of coverage and these contain a good sample of the floristic diversity of the dry piedmont forests.

Keywords : Bramaderos; dry forest of the southwest of Ecuador; diversity; strata; semideciduous forest; gallery forest; Paltas.

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