The late Holocene extinction of Pinus sylvestris in the West of the Cantabrian Range

Rubiales Jimenez, Juan Manuel; Garcia-Amorena Gomez del Moral, Ignacio; García Álvarez, Salvia y Gómez Manzaneque, Fernando (2008). The late Holocene extinction of Pinus sylvestris in the West of the Cantabrian Range. "Journal of Biogeography", v. 35 (n. 10); pp. 1840-1850. ISSN 0305-0270.

Descripción

Título: The late Holocene extinction of Pinus sylvestris in the West of the Cantabrian Range
Autor/es:
  • Rubiales Jimenez, Juan Manuel
  • Garcia-Amorena Gomez del Moral, Ignacio
  • García Álvarez, Salvia
  • Gómez Manzaneque, Fernando
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Biogeography
Fecha: Octubre 2008
Volumen: 35
Materias:
Palabras Clave Informales: Cantabrian mountains, extinction, historical biogeography, Holocene, Iberian Peninsula, macrofossils, megafossils, palaeoecology, Pinus sylvestris, Tetrao urogallus.
Escuela: E.T.S.I. Montes (UPM) [antigua denominación]
Departamento: Silvopascicultura [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Aim To reconstruct the historical biogeography of Pinus sylvestris in the Cantabrian Range (Iberian Peninsula) during the Holocene, and to consider the interactions between vegetation dynamics, climate change and the role of man in the present-day distribution of the species. Location The study site is a mire (1300 m a.s.l.) at Vega de Viejos, on a south-facing slope of the western Cantabrian Range, Spain. The region’s present-day landscape is almost treeless, with the exception of some patches of Quercus pyrenaica and a few copses of Salix and Betula along stream banks. Methods Tree macrofossils from Vega de Viejos were studied by transmitted light and dark-field reflection microscopy; strobili were subjected to comparative morphological analyses. Two Pinus macrofossils were dated by conventional 14C methods. Results The taxonomic accuracy achieved in the identification of the macrofossils provided new information regarding the Holocene history of Pinus sylvestris in this territory. Ninety-five cones of this species were identified; in fact, more than 80% of the 36 identified wood remains were of Pinus gr. sylvestris. Radiocarbon dating revealed that the forest to which the fossils belonged was present until at least 2170 ± 50 yr bp – its disappearance was therefore relatively recent. Main conclusions Pinus sylvestris suffered long-term isolation, and after the Wu¨rm glacial period tended to migrate towards the east. In western Iberia, a temperate climate and autogenic succession favoured broadleaved taxa at the expense of Pinus. Late Holocene human disturbances may have further accelerated the decline of P. sylvestris; in the Cantabrian Range, only a few stands on southern slopes have persisted until the present day. The history of the capercaillie (Tetrao urogallus), a bird characteristic of pure or mixed Palaeartic coniferous forests, was almost certainly affected by the demise of these forests in this area. Cantabrian capercaillies are the only members of this species that live in purely deciduous forests, perhaps a recent adaptation to the regional extinction of pines. Today’s P. sylvestris and capercaillie populations are now highly fragmented and their future, given the predictions of global climate change, is uncertain.

Más información

ID de Registro: 2132
Identificador DC: http://oa.upm.es/2132/
Identificador OAI: oai:oa.upm.es:2132
Depositado por: Memoria Investigacion
Depositado el: 28 Abr 2010 11:36
Ultima Modificación: 20 Abr 2016 11:54
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