Altitudinal effect on the population structure of Espeletia pycnophylla Cuatrec. in the wasteland of Volcán Galeras Flora and Fauna Sanctuary (Nariño, Colombia)

Efecto altitudinal sobre la estructura poblacional de Espeletia pycnophylla Cuatrec. en el páramo del Santuario de Fauna y Flora Volcán Galeras (Nariño, Colombia);
Efeito da altitude sobre a estrutura populacional de Espeletia pycnophylla Cuatrec. no páramo do Santuário de Fauna e Flora Vulcão Galeras (Nariño – Colômbia)

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Author
Bolaños-Guaranguay, Alexandra
Patiño C., Ayda Lucía
Calderón-Leytón, Jhon Jairo
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Subjects
densidad poblacional
factor ambiental
gradiente altitudinal
ventaja competitiva
Densidade populacional
fator ambiental
gradiente da altitude
vantagem competitiva
Population density
environmental factor
altitudinal gradient
competitive advantage
URI
https://hdl.handle.net/20.500.14112/26039
Resource url
https://revistas.umariana.edu.co/index.php/Criterios/article/view/1880
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DOI: https://doi.org/10.31948/rev.criterios/25.2-art5 The objective of this study was to evaluate the effect that altitude generates on the structure and population density of Espeletia pycnophylla Cuatrec in the Galeras wasteland. The sampling was carried out in three altitudinal elevations, in each of which ten squares of 25m2 were established and the number of individuals, the total height and information regarding the state of the reproductive structures of the plant were recorded. The results indicate a negative linear relationship between the height of the plants and the elevation and a positive linear relationship that favors the establishment of juvenile individuals at higher altitudes. In addition, an optimal area was found that favors the establishment of a high number of adult individuals with evidence of reproductive structures. The high representativeness of juvenile individuals and plants with reproductive evidence allows us to infer that this population is in constant growth.