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      Vegetación asociada con helechales en el Parque Nacional Natural Serranía de Los Yariguíes, Colombia Translated title: Associated vegetation with bracken ferns in the Yariguíes National Natural Park, Colombia

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          Abstract

          Resumen Introducción: La alteración en la composición y estructura de la vegetación da paso a la introducción de especies consideradas invasoras, caso de Pteridium arachnoideum, que, por sus características de crecimiento por reproducción asexual y efecto alelopático, puede colonizar rápidamente; tal capacidad de invasión, inhibe los procesos de sucesión natural, permite el dominio de especies herbáceas y disminuye la diversidad de especies arbóreas. Objetivo: Evaluar la vegetación asociada a los helechales (P. esculentum subsp. arachnoideum x P. esculentum subsp. campestre) distribuidos en la zona denominada Golconda, ubicada en el Parque Nacional Natural Serranía de Los Yariguíes. Métodos: Se realizaron 15 parcelas de 25 m2 cada una; en ellas, se tomaron datos de composición y fisonomía de la vegetación [formas de crecimiento, altura (m), cobertura (m2), diámetro a la altura del pecho (DAP) para todos los árboles y abundancia de especies]; se estimaron índices de probabilidad de diversidad (Shannon y Simpson), el porcentaje de especies y abundancia por formas de crecimiento, IVI para especies arbóreas y arbustivas, IVR para herbáceas y el esfuerzo de muestreo. Resultados: Se registraron 924 individuos pertenecientes a 65 especies, distribuidas en 24 familias; las taxa más ricas son: Melastomataceae, Asteraceae y Poaceae, consideradas frecuentes en áreas perturbadas. Las áreas dominadas por helechales son diversas, a pesar de la dominancia de especies como: Ageratina cf. fastigiata, Tibouchina lindeniana, Clethra fagifolia, Coccocypselum lanceolatum y Clidemiaciliata; se identificaron 30 especies leñosas y 21 herbáceas. Conclusiones: Con especies leñosas pioneras que favorecen la sucesión, así como, taxones provenientes de áreas conservadas de interior de bosque, este estudio contribuye en la reevaluación del atributo de P. esculentum subsp. arachnoideum x P. esculentum subsp. campestre como inhibidora y causante de la disminución de la diversidad por su dominancia.

          Translated abstract

          Abstract Introduction: Alteration of the composition and structure of natural vegetation allows the invasion of species. This occurs with Pteridium esculentum subsp. arachnoideum x Pteridium esculentum subsp. campestre, which due to its growth by asexual reproduction and allelopathic effect, can quickly colonize disturbed habitat inhibiting natural succession, allowing herbaceous species to dominate and reducing tree species diversity. Objective: Evaluate the vegetation associated with the bracken P. esculentum subsp. arachnoideum x P. esculentum subsp. campestre distributed in the area called Golconda, in the Yariguíes National Park, Colombia. Methods: 15 plots of 25 m2 each were established; in each plot the vegetation composition and physiognomy were registered [growth forms, height (m) as well as vegetation cover (m2), diameter at breast height (DBH) for all trees and species abundance]; diversity probability indexes (Shannon and Simpson), percentage of species and abundance of growth forms, IVI for tree and shrub species, IVR for herbs, and the sampling effort were estimated. Results: 924 individuals belonging to 65 species were registered; they were distributed in 24 families; the richest taxa are: Melastomataceae, Asteraceae and Poaceae, which are considered frequent in disturbed areas. The areas dominated by ferns are botanically diverse, despite the dominance of species such as Ageratina cf. fastigiata, Tibouchina lindeniana, Clethra fagifolia, Coccocypselum lanceolatum and Clidemia ciliata; 30 woody and 21 herbaceous species were identified. Conclusions: Given that pioneer woody species and taxa from preserved areas of forest interiors subserve succession, this study contributes to a reevaluation of P. esculentum subsp. arachnoideum x P. esculentum subsp. campestre as an inhibitor and cause of a decrease in diversity due to its dominance.

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          Most cited references31

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          Life zone ecology

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            A Study of Spatial Features of Clones in a Population of Bracken Fern, Pteridium aquilinum (Dennstaedtiaceae)

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              The invasion of Pteridium aquilinum and the impoverishment of the seed bank in fire prone areas of Brazilian Atlantic Forest

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                Author and article information

                Journal
                rbt
                Revista de Biología Tropical
                Rev. biol. trop
                Universidad de Costa Rica (San José, San José, Costa Rica )
                0034-7744
                0034-7744
                December 2020
                : 68
                : 4
                : 1107-1115
                Affiliations
                [1] Boyacá orgnameUniversidad Pedagógica y Tecnológica de Colombia Colombia astrid.castro01@ 123456uptc.edu.co
                Article
                S0034-77442020000401107 S0034-7744(20)06800401107
                10.15517/rbt.v68i4.40451
                82b3deff-1a0c-4bf2-b8e5-73706380f9a2

                This work is licensed under a Creative Commons Attribution 3.0 International License.

                History
                : 31 January 2020
                : 07 August 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 31, Pages: 9
                Product

                SciELO Costa Rica

                Categories
                Artículo

                diversity,woody plants,ferns,composición,estructura,diversidad,plantas leñosas,helechos,structure,composition

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