Montane Forest
Reforestation with the Native Tree Alnus acuminata: Effects on Phytodiversity and Species Richness in an Upper Montane Rain Forest Area of ColombiaBackgroundThis study takes place in the western cordillera in Colombia (Quindio). Upper montane forest is dominated by large Weinmannia (Alnus acuminata) plantations established from 1977-1978 on abandoned agricultural and grazing land (for erosion control), and secondary forest fragments that naturally colonized abandoned agricultural areas. Available with subscription or purchase |
Estrategias para la restauración ecológica del bosque altoandino. El caso de la reserva municipal de Cogua. (Strategies for the ecological restoration of the high Andean forest - the case of the municipal reserve of Cogua)Entre los años 2002-2006 se realizó una restauración de potreros degradados en la reserva forestal municipal de Cogua (departamento de Cundinamarca - páramo alto - 2900-3630 m). Se hizo la restauración con 1) remoción de Chusquea scandens; 2) creación de perchas artificiales para aves (para facilitar lluvia de semillas); 3) siembras de especies selectivas Se notó invasión de Ulex europaeus y la herbivoría por Cavia porcellus (curí) como barreras para la restauración. Aún no se ha realizado una evaluación cuantitativa. Open access copy available |
Modelling the Effect of Forest Cover on Shallow Landslides at the River Basin ScalebackgroundThis study analyzes soil models that can be used to help predict soil erosion which are useful to prioritize reforestation areas of watersheds. Research Goals & MethodsThe researchers tested the models in a river basin in Ecuador. They collected data for soil moisture/matric potential, depth, and rainfall. Vegetation (overland flow resistance coefficient) and root cohesion data were derived from the literature, as was the evapotranspiration rate. Open access copy available |
Effect of Prior Land Use on the Recolonization of Native Woody Species under Plantation Forests in the Highlands of EthiopiabackgroundThis study analyzes the recolonization of native woody species in 16-18 year old plantation forests (Eucalyptus saligna and Cupressus lusitanica) in the highlands of Ethiopia. Goals & MethodsEffects of recolonization were evaluated through assessing naturally regenerating flora (NRF) and soil seed banks (SSB) in plantation forests established on abandoned farmland and cleared natural forest sites. About 66 plant species were recorded in the NRF and 55 plant species germinated from the soil samples collected for SSB analysis. Available with subscription or purchase |
Restoring dense vegetation can slow mountain erosion to near natural benchmark levelsBackgroundTropical mountain areas may undergo rapid land degradation as demographic growth and intensified agriculture cause more people to migrate to fragile ecosystems. To assess the extent of the resulting damage, an erosion rate benchmark against which changes in erosion can be evaluated is required. Benchmarks reflecting natural erosion rates are usually not provided by conventional sediment fluxes, which are often biased due to modern land use change, and also miss large, episodic events within the measuring period. Available with subscription or purchase |
Recuperación estructural en bosques sucesionales andinos de Porce, Antioquia, Colombia (Structural recuperation in secondary successional Andean forests in Porce, Antioquia, Colombia)EspañolAntecedentesDurante décadas los bosques de la región de Porce (Antioquia, Colombia) han sido talados y quemados para establecer fincas ganaderas y, en menor proporción, agricultura. Este tipo de prácticas pudieron ser decisivas para el proceso sucesional del sitio, ya que la degradación producida en el suelo pudo afectar las características estructurales de la vegetación secundaria establecida. Open access copy available |
Reforestation and FarmersBackgroundThis chapter provides an overview of reforestation programs involving smallholder farmers, highlighting factors that influence the attractiveness of reforestation to different types of farmers. Available with subscription or purchase |
Soil carbon differences among forest, agriculture, and secondary vegetation in lower montane EcuadorBackgroundChanges in land use and land cover may affect soil properties and processes. Conversion of forest to cultivation is assumed to result in a decrease in soil nutrients. In the lower montane region of Ecuador, shifting cultivation patterns mean that forest clearing is occurring simultaneously with recolonization of secondary vegetation on abandoned agricultural lands. Open access copy available |
Propagación in vitro de material seleccionado de Tabebuia rosea y Cordia alliodora (In vitro propagation of selected material from Tabebuia rosea and Cordia alliodora)EspañolAntecedentesLa aplicación de la micropropagación y otras técnicas biotecnológicas a las especies forestales maderables ha representado un enfoque útil para aumentar el número de plantas necesarias para el establecimiento de plantaciones de restauración. En Colombia se está investigando la integración de esta tecnología para la siembra de importantes especies maderables nativas como Tabebuia rosea y Cordia alliodora. Open access copy available |
Apuntes sobre algunas especies forestales nativas de la sierra Peruana (Notes about several forest native species from the highlands of Peru)EspañolAntecedentesDesde 1860, la reforestación en la Sierra Peruana se realizó principalmente con Eucalipto, cambiando a Pinus radiata durante las décadas de 1950-1970. La necesidad de reforestar tierras mas elevadas, despertó el interés por la propagación y uso de especies forestales nativas las cuales se encuentran mejor adaptadas a estas condiciones y presentan diversos usos y beneficios. Open access copy available |
