INVESTIGADORES
SOLER ESTEBAN Rosina Matilde
congresos y reuniones científicas
Título:
Soil properties between pure and mixed Nothofagus forests in different landscapes of Tierra del Fuego
Autor/es:
TORO MANRÍQUEZ, MÓNICA; SOLER, ROSINA MATILDE; LENCINAS, MARIA VANESSA; BARRERA, MARCELO; ÁLVARO PROMIS; MARTÍNEZ PASTUR, GUILLERMO
Lugar:
Temuco
Reunión:
Congreso; 1° Congreso Latinoamericano IUFRO-LE y 2° Congreso Latinoamericano IALE; 2016
Resumen:
Nothofagus pumilio and N. betuloides, forest species of Southern Patagonia, can appear as pure stands or in mixed forests patches, in patterns that are greatly influenced by dominant pedogenetic processes of each species. The aim of this study was to evaluate chemical and physical properties of soils and Relationships between pure forests N. pumilio (Np), N. betuloides (Nb) and mixed forests (M) in coastal and mountain landscapes in Tierra del Fuego. Sixty soil samples were taken at 10 cm depth (30 samples for each landscape and forest type). Chemical properties included nutrient content (%, ratio, C, N and P), organic matter, pH and cation exchange capacity (CEC), and physical properties, such as soil compaction, texture, apparent density, temperature and moisture, were measured as well. Using ANOVA and multivariate analysis, we found no difference between forest soil chemistry by forest type. However, significant differences were found when comparing samples by landscape. P% was higher in coastal sites and significantly higher (p=0.05) in pure Np stands. C/N ratio wasgreater in coastal forests while pH and CEC were higher in mountain sites. Organic matter content was statistically similar at forest and landscape levels. Significant differences in physical properties between the coastal and mountain sites were also detected. Mountain sites have a high percentage of sand, with greater CEC, apparent density and soil moisture. In contrast, soil composition in coastal sites was silty-clay with a high resistance to compaction. It is concluded that soil physical and chemical properties vary significantly betweenlandscapes, and the ecological implications of this finding could be influential in the management of ecosystems.