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Arciniegas Fárez, Andrés Eduardo

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1983-04-09

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0009-0008-3470-511X

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Universidad de Cuenca, Cuenca, Ecuador
Universidad de Cuenca, Facultad de Ciencias Agropecuarias, Cuenca, Ecuador

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Ecuador

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Facultad de Ciencias Agropecuarias
El 21 de abril de 1982, por resolución del Honorable Consejo Universitario se establece la Facultad de Ciencias Agropecuarias, de la Universidad de Cuenca. La Facultad de Ciencias Agropecuarias es una institución formadora de talento humano en el área agronómica, a través de una educación de calidad, centrada en la investigación y vinculación con la colectividad. Los futuros profesionales médicos veterinarios zootecnistas e ingenieros agrónomos, durante su permanencia en las aulas y estudio de campo, desarrollan conocimientos científicos-tecnológicos, competencias y destrezas en procesos de producción agropecuaria. Se los prepara con el fin de preservar la salud de los animales y recursos naturales, fomentando la seguridad alimentaria, respetando el medio ambiente dentro del marco del Buen Vivir, englobado en las necesidades de la región y el país.

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Arciniegas Fárez

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Andrés Eduardo

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    Publication
    Regeneración de árboles en ecosistemas naturales y plantaciones de Pinus patula (Pinaceae) dentro de un gradiente altitudinal andino (Azuay, Ecuador)
    (2019) Jadán Maza, Ángel Oswaldo; Cedillo Tapia, Hugo Alberto; Zea Dávila, Pedro René; Bermúdez, Fernando Gerardo; Díaz Granda, Lourdes Elizabeth; Pillacela Chin, Jenny Priscila; Guallpa Tenemaza, Dario Javier; Gordillo Lema, Nely Alexandra; Arciniegas Fárez, Andrés Eduardo; Vaca Vaca, Carlos Miguel; Quizhpe Coronel, Wilson
    Andean forests and paramo have high species richness, but constantly they are threatened by deforestation. Natural arboreal regeneration of these ecosystems will condition their structure and functionality in the future, but now it has been poorly evaluated. In the Andes of Southern Ecuador, there are also abandoned Pinus patula (pine) forest plantations, which could be scenarios to promote natural regeneration. In an Andean altitudinal gradient, we evaluated floristically parameters of tree regeneration between two study scenarios: natural ecosystems (herbaceous paramos and natural forests) and pine plantations. For this, the diversity of regeneration was described by species richness, Shannon index and floristic composi-tion. Abundance with the number of individuals; these parameters were compared between two scenarios. We determined also that environmental variables or predictors of: canopy cover, soil, tree structure, horizontal dis-tance and physiographic explained the variation in the parameters of regeneration with greater magnitude. For this, a partition analysis of the variation was carried out. Richness and diversity of species were greater in natural ecosystems, whereas floristic composition was different and its abundance was similar. In natural ecosystems, basal area and tree density explained mainly the variation in wealth, diversity and abundance. Not so in pine plantations where horizontal distance to the native forests was the predictor that mostly explained. The greatest diversity of regeneration in natural ecosystems (forests) is associated with the existence of arboreal, shrub and seed biotypes. It is adding to this, efficiency in dispersion processes at the micro-habitat level. These aspects are limiting in plantations of pine, in which the dispersion or availability of seeds depends on the proximity to natural ecosystems