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   <dc:title>Spatial variability of tree hight at treeline ecotones in the Pyrenees.</dc:title>
   <dc:creator>Camarero Martínez, Jesús Julio</dc:creator>
   <dc:creator>Gutiérrez Merino, Emilia</dc:creator>
   <dc:subject>Pins</dc:subject>
   <dc:subject>Flora alpina</dc:subject>
   <dc:subject>Pirineus</dc:subject>
   <dc:subject>Pine</dc:subject>
   <dc:subject>Mountain plants</dc:subject>
   <dc:subject>Pyrenees</dc:subject>
   <dcterms:abstract>[eng] We describe the spatial distribution of tree height of Pinus uncinata at two undisturbed altitudinal treeline ecotones in the southern Pyrenees (Ordesa, O, and Tessó, T). At each site, a rectangular plot (30 x 140 m) was located with its longest side parallel to the slope and encompassing treeline and timberline. At site O, height increased abruptly going downslope with a high spatial autocorrelation at short distances. In contrast, the changes of tree height across the ecotone at site T were gradual, and tree height was less spatially autocorrelated. These results can be explained by the greater importance of wind and snow avalanches at sites O and T, respectively.</dcterms:abstract>
   <dcterms:abstract>[spa] Describimos la distribución espacial de la altura de individuos de Pinus uncinata en dos ecotonos del límite del árbol localizados en los Pirineos meridionales (Ordesa, O; Tessó, T). En cada sitio, situamos una parcela rectangular (30 x 140 m) con su lado mayor paralelo a la pendiente e incluyendo los límites altitudinales del árbol y del bosque. En el sitio O, la altura aumentó de forma brusca al descender en altitud mostrando una elevada autocorrelación espacial a pequeñas distancias. Por contra, los cambios de altura en el ecotono del sitio T fueron graduales, mostrando esta variable menor autocorrelación. Estos resultados pueden explicarse por la mayor importancia del viento en el sitio O y de los aludes de nieve en el sitio T.</dcterms:abstract>
   <dcterms:issued>2013-12-19T13:13:00Z</dcterms:issued>
   <dcterms:issued>2013-12-19T13:13:00Z</dcterms:issued>
   <dcterms:issued>2001</dcterms:issued>
   <dcterms:issued>2013-12-19T13:13:00Z</dcterms:issued>
   <dc:type>info:eu-repo/semantics/article</dc:type>
   <dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
   <dc:relation>Reproducció del document publicat a: https://www.raco.cat/index.php/Orsis/article/view/24447</dc:relation>
   <dc:relation>ORSIS: Organismes i Sistemes, 2001, vol. 16, p. 133-144</dc:relation>
   <dc:rights>cc-by-nc (c) Camarero Martínez, Jesús Julio et al., 2001</dc:rights>
   <dc:rights>http://creativecommons.org/licenses/by-nc/3.0/es</dc:rights>
   <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
   <dc:publisher>Universitat Autònoma de Barcelona</dc:publisher>
   <dc:source>Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)</dc:source>
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