English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/125026
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 14 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar bibText (RIS)Exportar csv (RIS)
Título

Recent and intense dynamics in a formerly static pyrenean treeline

Autor Camarero, Jesús Julio ; García-Ruiz, José María ; Sangüesa-Barreda, G. ; Galván, Juan Diego ; Alla, A. Q. ; Sanjuán, Yasmina ; Beguería, Santiago ; Gutiérrez, Emilia
Fecha de publicación nov-2015
Citación Camarero JJ, García-Ruiz JM, Sangüesa-Barreda G, Galván JD, Alla AQ, Sanjuán Y, Beguería S, Gutiérrez E. Recent and intense dynamics in a formerly static pyrenean treeline. Arctic, Antarctic, and Alpine Research 47 (4): 773-783 (2015)
ResumenAlpine treelines are considered monitors of the effects of climate on forest growth and dynamics. Treelines are expected to react to current climate warming by showing upslope migrations. However, treeline dynamics are often characterized by lagged responses to rising temperatures, that is, treeline inertia. In addition, encroachment within the treeline ecotone seems to be a more widespread response to climate warming than treeline ascent. We investigate how the treeline responds to climate in a Pyrenean site with an intense Mountain pine (Pinus uncinata) regeneration but also abundant dead trees. We use dendrochronology to reconstruct treeline dynamics (growth, tree recruitment, and death) and to build an age structure of Pyrenean Mountain pine forests, and relate them to temperature reconstructions of the study area. We also describe the spatial structure and estimate the size reproductive threshold of pine recruits. The study treeline showed profuse pine recruitment in the 1980s. These recruits were spatially aggregated and reached the 50% probability of reproduction at 24 years old. Most Pyrenean Mountain pines were recruited in the first half of the 18th century, a warm period when growth was stable, while old treeline trees recruited not only in those decades but also in previous warm periods. Pine deaths concentrated in the cool transition between the mid 17th and the early 18th centuries and mainly from 1820 to 1860, when growth declined as a consequence of temperatures rapidly dropping at the end of the Little Ice Age. Only the amount of dead pines at the treeline was negatively related to temperatures, indicating that cool periods cause high adult mortality rates and trigger long-term treeline decline. But this decline was interrupted by intense regeneration and treeline encroachment, two features that characterize recent treeline dynamics in some mountains. This concurs with the view of a rapid response of alpine treelines to climate during the late 20th century.
Descripción 11 Pags.- 3 Tabls.- 5 Figs.
Versión del editorhttp://dx.doi.org/10.1657/AAAR0015-001
URI http://hdl.handle.net/10261/125026
DOI10.1657/AAAR0015-001
ISSN1523-0430
E-ISSN1938-4246
Aparece en las colecciones: (EEAD) Artículos
(IPE) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Acceso_Restringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.