Número de especies en función del diámetro mínimo evaluado en bosques montanos y premontanos de la selva central del Perú

Abstract

ResumenSe emplean datos de ocho Parcelas Permanentes de 1 ha (diámetro mínimo de evaluación 10 cm de DAP) y un número similar de Transectos RAP de 0.1 ha (diámetro mínimo de evaluación 2.5 cm de DAP) emplazados en bosques húmedos premontanos (940 -1 150 msnm) y montanos primarios (2 078 -2 770 msnm) del valle de Chanchamayo (Departamento de Junín / Perú), con el objetivo de mostrar la influencia del diámetro mínimo de registro en la diversidad arbórea hallada. Se analizan los porcentajes de especies por clase diamétrica y los correspondientes valores de Alpha de Fisher. Los resultados muestran que inventarios considerando solamente diámetros por encima de 40 cm de DAP capturan muy poco de la riqueza existente en el bosque (equivalente a sólo el 29.2% y 22.9% del total de las especies en bosques premontanos y montanos, respectivamente); los valores de Alpha de Fisher son coincidentes con lo mencionado.

Performance and physiological quality of Escallonia resinosa seeds: prospects for their use in reforestation and restoration

“…E. resinosa germination rate was 48.6%, which is lower than the 60-85% reported by Reynel et al (2006). However, it is higher than values reported for other Andean species, such as P. neglecta, P. pacensis, P. incarum, P. tomentella, and P. tarapacana, which have germination rates lower than 10% due to a large number of empty seeds and aborted embryos (Vega et al 2018;Domic et al 2020;Cuyckens et al 2021).…”

“…Fruits are capsules of 4–5 mm in diameter, located in the terminal branches (Fig. 1C), and provide numerous seeds (Macbride 1938; Reynel et al 2006; Reynel & Marcelo 2009).…”

“…The estimated number of seeds per kilogram was lower than the 128 million/ kg reported by Rey (2001), but higher than the 5.3 million/kg reported by Reynel and Le on (1990). Furthermore, of the two different morphological types of seeds described here, only type II corresponds to the description provided by Reynel et al (2006).…”

“…043-2006043- -AG 2006; therefore, reforestation and restoration projects involving this species are necessary and deserve attention from Andean countries. Nonetheless, little attention has been paid to the propagation of this species, and the very scarce information available is mostly found in the gray literature (Pretell et al 1985;Reynel et al 2006).…”

“…This species and its congeners are of great importance in the production of honey by Apis mellifera L.; indeed, honey produced almost exclusively from pollen and nectar of Escallonia flowers was recorded in some areas of Peru, Chile, and Argentina (Forcone 2008; Montenegro et al 2010; Yuca‐Rivas 2016). In Peru, E. resinosa is used for ornamental and medicinal purposes (Reynel et al 2006), and as quality wood to produce utensils and tools for agriculture (Macbride 1938). Currently, this species is classified as vulnerable according to the Peruvian legislation (Supreme Decree No.…”