Resumo

TILLAGUANGO-PINTADO, Jhoana; MUNOZ-CHAMBA, Luis; MUNOZ, Johana  e  AGUIRRE, Zhofre. Characterization of a Pteridium arachnoideum (Kaulf.) Maxon population and the vegetation associated with the anthropic paramo in Southern Ecuador. Kurú [online]. 2023, vol.20, n.47, pp.16-25. ISSN 2215-2504.  http://dx.doi.org/10.18845/rfmk.v20i47.6820.

The Ecuadorian paramos affected by forest fires present changes in their structure, floristic composition, modifications in their ecological processes, and the appearance of invasive species. This study was carried out at the Parque Universitario "Francisco Vivar Castro", to characterize the status of P. arachnoideum and the associated vegetation in 20 plots of 5 x 5 m, by identifying individuals greater than 5 cm in height. The variables measured were abundance, density, population structure, and spatial distribution; for the associated vegetation, we calculated the structural parameters of the vegetation, the level of coverage of herbaceous species, and the level of association with the species. The results showed an abundance of 1 919 individuals of P. arachnoideum, a population density of 38 380 ind/ha, and a cluster spatial distribution. The specific richness of the anthropic paramo was 28 species, 27 genera, and 15 families; the species with the greatest ecological importance and that determine its structure were Baccharis latifolia (12,52%), Gaultheria erecta (12,35%), and Gynoxys nitida (11,85%); the plant cover of P. arachnoideum was between 25-50%, 46,42% of the species had a low association, 25% a medium association and 28,58% a high association. The presence of P. arachnoideum in the anthropic paramo was abundant and dominant, and shrubs and tree species showed different associated levels as products of environmental conditions of anthropic paramo.

Palavras-chave : Association; Ecuador; fire; invasive; paramos; restoration..

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