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Título : | Dendrochronological analysis and growth patterns of polylepis reticulata (Rosaceae) in the ecuadorian andes |
Autor: | Alvites, Cesar Ivan Battipaglia, Giovanna Santopuoli, Giovanni Hampel , Henrietta Vazquez Zambrano, Raul Fernando Matteucci, Giorgio Tognetti, Roberto |
Correspondencia: | Santopuoli, Giovanni, giovanni.santopuoli@unimol.it |
Palabras clave : | Climate Change Dendroclimatology Mountain Forests Relict Species Tree Rings |
Área de conocimiento FRASCATI amplio: | 1. Ciencias Naturales y Exactas |
Área de conocimiento FRASCATI detallado: | 1.6.11 Ciencias de las Plantas |
Área de conocimiento FRASCATI específico: | 1.6 Ciencias Biológicas |
Área de conocimiento UNESCO amplio: | 05 - Ciencias Físicas, Ciencias Naturales, Matemáticas y Estadísticas |
ÁArea de conocimiento UNESCO detallado: | 0522 - Medio Ambiente y Vida Silvestre |
Área de conocimiento UNESCO específico: | 052 - Medio Ambiente |
Fecha de publicación : | 2019 |
Fecha de fin de embargo: | 30-jul-2021 |
Volumen: | volume 40, número 2 |
Fuente: | IAWA Journal |
metadata.dc.identifier.doi: | 10.1163/22941932-40190240 |
Tipo: | ARTÍCULO |
Abstract: | Relict tree species in the Andean mountains are important sources of information about climate variability and climate change. This study deals with dendroclimatology and growth patterns in Polylepis reticulata Hieron., growing at high elevation (mean of 4000 m a.s.l.) in three sites of the Ecuadorian Andes. The aims of the research were: (i) characterizing tree-ring boundaries; (ii) describing tree-ring patterns of the study sites; (iii) investigating the relationships between climate and radial tree growth; and (iv) determining the spatial correlation between seasonal climatic factors and tree-ring width of P. reticulata. Tree rings were characterized by semi-ring porosity and slight differences in fibre wall thickness between latewood and subsequent earlywood. In all sampling sites, tree rings in heartwood were more clearly visible than in sapwood. Tree-ring width was more related to temperature than to precipitation, with growth being also affected by site conditions and stand structure, as well as other local factors. No significant relationships were found between tree-ring chronologies of P. reticulata and El Niño-Southern Oscillation (ENSO) and Vapour Pressure Deficit indices. The study highlights that there is not a clear driving climate factor for radial growth of P. reticulata. Additional research is needed to study growth dynamics of this species and the impacts of local environmental variables. |
Resumen : | Relict tree species in the Andean mountains are important sources of information about climate variability and climate change. This study deals with dendroclimatology and growth patterns in Polylepis reticulata Hieron., growing at high elevation (mean of 4000 m a.s.l.) in three sites of the Ecuadorian Andes. The aims of the research were: (i) characterizing tree-ring boundaries; (ii) describing tree-ring patterns of the study sites; (iii) investigating the relationships between climate and radial tree growth; and (iv) determining the spatial correlation between seasonal climatic factors and tree-ring width of P. reticulata. Tree rings were characterized by semi-ring porosity and slight differences in fibre wall thickness between latewood and subsequent earlywood. In all sampling sites, tree rings in heartwood were more clearly visible than in sapwood. Tree-ring width was more related to temperature than to precipitation, with growth being also affected by site conditions and stand structure, as well as other local factors. No significant relationships were found between tree-ring chronologies of P. reticulata and El Niño-Southern Oscillation (ENSO) and Vapour Pressure Deficit indices. The study highlights that there is not a clear driving climate factor for radial growth of P. reticulata. Additional research is needed to study growth dynamics of this species and the impacts of local environmental variables. |
URI : | http://dspace.ucuenca.edu.ec/handle/123456789/33166 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85063625244&origin=inward |
URI Fuente: | http://www.kuleuven.ac.be/bio/sys/iawa/ |
ISSN : | 09281541 |
Aparece en las colecciones: | Artículos
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