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Revista Árvore

versão impressa ISSN 0100-6762versão On-line ISSN 1806-9088

Resumo

PALACIOS-RAMOS, Sonia; MONTENEGRO, Rolando; LINARES-PALOMINO, Reynaldo  e  REYNEL, Carlos. FOREST DYNAMICS OF A SUB-XEROPHILOUS VEGETATION FORMATION IN CENTRAL PERU - CHANCHAMAYO VALLEY, PERU. Rev. Árvore [online]. 2018, vol.42, n.6, e420603.  Epub 11-Fev-2019. ISSN 1806-9088.  http://dx.doi.org/10.1590/1806-90882018000600003.

Studies about the complex processes of forest dynamics in pre-montane and montane forests (between 600 - 3000 m altitude) are rare. This study contributes to our knowledge on changes in the floristic composition and population dynamics of woody species in a sub-xerophilous formation immersed in the humid pre-montane and montane forests of Peru. In 2015 we re-measured trees with diameter at breast height equal or greater than10cm in a permanent plot established in 2009. We recorded 31 species of 25 families, with a Fisher's Alpha diversity index of 7.5. The most abundant and dominant species (including Heteropterys intermedia, Physocalymma scaberrimum, Sapium glandulosum, Tachigali peruviana and Machaerium hirtum) represented 66.25% of all species in 2009 and 66.36% in 2015. The prevalence of these species and others ensures the maintenance of a characteristic seasonally dry forest formation within the census period (6.25 years). The dynamics of this forest, with a high rate of recruitment (3.82%) and a low rate of mortality (0.72%), show favorable conditions for the maintenance of this forest fragment.

Palavras-chave : Dry forest; Mortality; Recruitment.

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