SciELO - Scientific Electronic Library Online

 
vol.28 número2Estudio preliminar de la ocupación humana prehispánica y la diversidad natural en cerro Pergoche, parte alta de la cuenca del valle de Chicama, centro poblado Barro Negro, caserío San Isidro, distrito Usquil, provincia Otuzco, región La Libertad, PerúDiversidad y recambio espacial de las plantas vasculares del humedal marino costero de Carquín-Hualmay (Lima - Perú) índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

Compartir


Arnaldoa

versión impresa ISSN 1815-8242versión On-line ISSN 2413-3299

Resumen

AGUIRRE MENDOZA, Zhofre  y  CABRERA GUERRERO, Orlando. Population parameters and natural regeneration of Bursera graveolens (Kunth) Triana & Planch (Burseraceae), in Zapotillo, Ecuador. Arnaldoa [online]. 2021, vol.28, n.2, pp.305-318. ISSN 1815-8242.  http://dx.doi.org/10.22497/arnaldoa.282.28203.

Population dynamics studies the composition and size of the population of a species through density, age, sex, spatial distribution, biological and environmental processes that drive them and their variations over time. The objective of the research was to evaluate the population parameters and the natural regeneration of Bursera graveolens (Burseraceae) in Malvas, Zapotillo canton, Ecuador. 18 temporary plots of 20 m x 20 m were installed, systematically with a spacing of 250 m. 2 m x 2 m plots were nested to study seedlings and sapling; subplots of 5 m x 5 m for low bed and 10 m x 10 m for high bed. The spatial distribution was calculated using the Standardized Morisita Index (Ip) and Near Neighbor Analysis (Qgis), the population density was determined by applying the absolute density formula, for the age structure the individuals were grouped into diameter classes, for natural regeneration structural parameters were calculated: relative density, frequency and IVI. The spatial distribution pattern according to the Standardized Morisita index is uniform (- 0.087), the density is 119 individuals / ha, most individuals are grouped between 22.60 cm and 25.74 cm DBH. Natural regeneration is scarce, the category with the highest number of individuals is sapling with 114 individuals / ha and has the highest IVI. The population is mostly adult; it was evidenced that regeneration is scarce, due to overgrazing of goats and collection of fruits to obtain essential oils

Palabras clave : population parameters; spatial distribution; population density; age structure; natural regeneration; Bursera graveolens.

        · resumen en Español     · texto en Español     · Español ( pdf )