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Título: | Detecting snow-related signals in radial growth of Pinus uncinata mountain forests |
Autor: | Sanmiguel-Vallelado, Alba CSIC ORCID; Camarero, Jesús Julio CSIC ORCID ; Gazol Burgos, Antonio CSIC ORCID ; Morán-Tejeda, Enrique CSIC ORCID CVN; Sangüesa-Barreda, G. CSIC ORCID ; Alonso-González, Esteban CSIC ORCID; Gutiérrez, Emilia; Alla, A. Q. CSIC ORCID; Galván, Juan Diego CSIC; López-Moreno, Juan I. CSIC ORCID | Palabras clave: | Dendroecology Tree-ring width Snowpack Subalpine forests Pyrenees |
Fecha de publicación: | oct-2019 | Citación: | Dendrochronologia 57: 125622 (2019) | Resumen: | Climate warming is responsible for observed reduction in snowpack depth and an earlier and faster melt-out in many mountains of the Northern Hemisphere. Such changes in mountain hydroclimate could negatively affect productivity and tree growth in high-elevation forests, but few studies have investigated how and where recent warming trends and changes in snow cover influence forest growth. A network comprising 36 high-elevation Pinus uncinata forests was sampled in the NE Iberian Peninsula, mainly across the Spanish Pyrenees, using dendrochronology to relate tree radial growth to a detailed air temperature and snow depth data. Radial growth was negatively influenced by a longer winter snow season and a higher late-spring snowpack depth. Notably, the effect of snow on tree growth was found regardless the widely reported positive effect of growing-season air temperatures on P. uncinata growth. No positive influence of moisture from spring snowmelt on annual growth of P. uncinata was detected in sampled forests. Tall trees showed a lower growth responsiveness to snow than small trees. Decreasing trends in winter and spring snow depths were detected at most Pyrenean forests, suggesting that the growth of high-elevation P. uncinata forests can beneficiate for a shallower and of shorter duration snowpack associated with warmer conditions. However, water-limited sites located on steep slopes or on rocky substrates, with poor soil-water holding capacity, could experience drought stress because of early depleted snow-related soil moisture. | Versión del editor: | http://doi.org/10.1016/j.dendro.2019.125622 | URI: | http://hdl.handle.net/10261/227821 | DOI: | 10.1016/j.dendro.2019.125622 | Identificadores: | doi: 10.1016/j.dendro.2019.125622 issn: 1125-7865 |
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Sanmiguel-Vallelado_Puncinatasnow_revised.pdf | 1,45 MB | Adobe PDF | Visualizar/Abrir |
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