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      GRUPOS FUNCIONALES DE PLANTAS CON POTENCIAL USO PARA LA RESTAURACIÓN EN BORDES DE AVANCE DE UN BOSQUE ALTOANDINO Translated title: Plant Functional Groups of Potential Restoration Use in Advancing Edges of High Andean Forests

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          Abstract

          El estudio de grupos funcionales de plantas es una herramienta útil en la identificación de características ecológicas de importancia en la regeneración de una comunidad. El objetivo de este estudio fue la identificación de grupos funcionales de plantas en bordes de avance de un bosque alto andino y la evaluación de su importancia en el curso de la sucesión secundaria en pastizales abandonados. Con base en levantamientos de vegetación de 10 x 10 m para el estrato arbóreo-arbustivo y de 1 x 1 m para el estrato herbáceo, y la revisión de atributos vitales de las especies registradas, se realizó una clasificación multivariante de las especies en grupos emergentes de plantas. Los atributos más importantes para la clasificación de los grupos emergentes fueron el método de dispersión y la ramificación basal de tallo; adicionalmente se presentaron diferencias entre los grupos del estrato arbustivo-arbóreo en la presencia de propagación vegetativa, el área foliar específica y el cociente altura/diámetro a la altura del pecho. Se definieron cuatros grupos para las especies de estrato herbáceo y cinco para las del estrato arbustivo-arbóreo, los cuales reúnen especies con estrategias de colonización similares. Dentro de los grupos definidos, las especies herbáceas dispersadas por diversos medios abióticos, las especies arbustivas con ramificación basal dispersadas por viento y las especies dispersadas por aves representan estrategias claves en la colonización del área de potrero adyacente dominada por Holcus lanatus y en la facilitación del establecimiento de especies del bosque secundario.

          Translated abstract

          The study of plant functional groups constitutes a useful tool in the identification of ecological characteristics relevant in community regeneration. The aim of this study was to identify plant’s functional groups in high Andean forest advance edges and to evaluate their role during secondary succession in abandoned pasturelands. Based on 10 x 10m vegetation relevees for the shrubby-arboreal stratum and 1 x 1 m plots for the herbaceous stratum and the revision of vital attributes for each of the species found, this study uses a multivariate approach to construct a trait-based emergent group’s classification. The most important attributes in the definition of the groups were the dispersion mechanism and the presence of basal trunk ramification in woody species; in addition differences in the presence of vegetative propagation, specific leaf area index and the ratio height/diameter at breast height were found between groups of the shrubby-arboreal stratum. Four distinct groups were defined in the herbaceous layer and five in the shrubby-arboreal layer, each group contains species with similar colonization strategies. Among the defined groups, the herbaceous species dispersed by various abiotic factors, the shrubby species with basal ramification and dispersed by wind and the species dispersed by birds constitute key strategies in forest recovery in adjacent abandoned pasturelands dominated by Holcus lanatus, and facilitate the establishment of secondary forest species.

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          Numerical ecology

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            Plant functional classifications: from general groups to specific groups based on response to disturbance.

            Predicting the effects of anthropogenic changes in climate, atmospheric composition and land use on vegetation patterns has been a central concern of recent ecological research. This aim has revived the search for classification schemes that can be to group plant species according to their response to specified environmental factors. One way forward is to adopt a hierarchical classification, where different sets of traits are examined depending on growth form. Also, at the level of interpretation, the environmental context and purpose of functional classifications need to be specified explicitly, so that global generalizations can be made by comparing across environments functional classifications derived from similar methodologies.
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              Restoration through reassembly: plant traits and invasion resistance.

              One of the greatest challenges for ecological restoration is to create or reassemble plant communities that are resistant to invasion by exotic species. We examine how concepts pertaining to the assembly of plant communities can be used to strengthen resistance to invasion in restored communities. Community ecology theory predicts that an invasive species will be unlikely to establish if there is a species with similar traits present in the resident community or if available niches are filled. Therefore, successful restoration efforts should select native species with traits similar to likely invaders and include a diversity of functional traits. The success of trait-based approaches to restoration will depend largely on the diversity of invaders, on the strength of environmental factors and on dispersal dynamics of invasive and native species.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                abc
                Acta Biológica Colombiana
                Acta biol.Colomb.
                Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología (Bogotá )
                0120-548X
                April 2011
                : 16
                : 1
                : 175-184
                Affiliations
                [1 ] Universidad Nacional de Colombia Colombia
                Article
                S0120-548X2011000100012
                55eb8b79-7cc8-4300-8433-cd4ea4d9ad22

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0120-548X&lng=en
                Categories
                BIOLOGY

                General life sciences
                natural regeneration,vital attributes,colonization strategies,Colombia,regeneración natural,atributos vitales,estrategias colonización

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