Characteristics and wood extract contents of Discaria chacaye and Ochetophila trinervis (Rhamnaceae) from ecotonal areas of southwest Neuquen province

Abstract

In ecotone environments between woodlands and steppe in Patagonia, highlighted by its high biodiversity and historically affected by multiple human activities, two valuable woody species are present: Discaria chacaye and Ochetophila trinervis (Rhamnaceae) widely used for firewood and with great ecological, social and cultural importance in the region. In order to contribute to the knowledge of the bole of these species, wood from adult specimens, extracted for firewood near San Martín de los Andes, southwest of the province of Neuquén, Argentina, was procured. boards, cubes, microscopic cuts and macerations were prepared for determination of aesthetic, macroscopic and microscopic characteristics, physical properties (density and hygroscopic equilibrium moisture content) and wood extracts content. Aesthetic and macroscopic wood characters of both species indicate their aptitude for use in handicrafts and small pieces of manufacture. Wood anatomical characteristics point out high conductive safety and specialization of both species for water and thermal stress situations. The high density in the wood of both species largely explains its preference as a fuel in the region. Wood extractives content of both species was slightly higher than expected for temperate climate species. We believe this information may be useful for future studies aimed at sustainable management and conservation of these valuable species and the environments where they grow.