Ochroma pyramidale, is a species recognized for its economic and ecological importance, widely used in forest plantation programs. The aim of this work was to evaluate seed quality indicators of Ochroma pyramidale in three sites in the Amazon region of Ecuador for reforestation purpose in degraded areas. The results indicated that the seeds of the species in the three study sites are of good quality, expressed through the germinative capacity, germination energy, useful value and germinative vigor, although in San Juan they presented higher values as a reflection of their vitality and exuberant nature.
Graphical AbstractAbstract Inga multinervis, a little-known species, is being used in agroforestry systems for nitrogen fixation and soil improvement. The aim of this research was to characterize the water relations of the species I. multinervisfrom pressurevolume measurements. The results indicated that the species has the capacity for osmotic and elastic adjustment, given to the low solute potentials and elasticity of the cell walls, thus its use is recommended in degraded forest systems with low water levels in the soil.
Se evaluó la diversidad florística de tres sitios de un bosque siempreverde piemontano de la región oriental amazónica del Ecuador. Se realizó un inventario florístico a partir de 25 parcelas de 20 x 20 m (400 m ) por sitio y se validó el esfuerzo de muestreo mediante la curva área especie. Se determinaron medidas de diversidad alfa y beta. Los resultados permitieron comprobar a través de la curva de rarefacción que los sitios no difieren significativamente en cuanto a la riqueza de especies ya que los intervalos de confianza al 95 % se solaparon, aunque existieron diferencias en el número de individuos para cada uno de los sitios, resultando varios propietarios con una menor abundancia, le sigue San Juan de Piatua y por último Veinte de Abril, asociado a la influencia de la acción antrópica. El área presentó una alta diversidad florística y reveló similitud florística entre los tres sitios de estudio. El análisis de conglomerados jerárquicos permitió la clasificación de dos grupos diferenciados por su abundancia, estructura y localización del área de estudio.
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