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Distribution patterns of forest species along an Atlantic-Mediterranean environmental gradient: an approach from forest inventory data / A. Olthoff in Forestry, an international journal of forest research, vol 89 n° 1 (January 2016)  

Public [article]  inForestry, an international journal of forest research > vol 89 n° 1 (January 2016) . - pp 46 - 54 Titre : Distribution patterns of forest species along an Atlantic-Mediterranean environmental gradient: an approach from forest inventory data Type de document : Article/Communication Auteurs : A. Olthoff, Auteur ; Carolina Martinez-Ruiz, Auteur ; Josu G. Alday, Auteur Année de publication : 2016 Article en page(s) : pp 46 - 54 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] betula pubescens [Termes IGN] Castille-et-Leon (Espagne) [Termes IGN] composition floristique [Termes IGN] distribution spatiale [Termes IGN] Espagne [Termes IGN] Fagus sylvatica [Termes IGN] inventaire forestier étranger (données) [Termes IGN] juniperus (genre) [Termes IGN] Pinus (genre) [Termes IGN] Quercus pyrenaica [Termes IGN] Quercus sessiliflora [Vedettes matières IGN] Ecologie forestière Résumé : (auteur) The aims of the study are the description of the distribution patterns of main forest tree species along complex environmental gradients and niche characterization, using the data from 772 plots from the third Spanish National Forest Inventory. Simultaneously, we would like to identify the relative contribution of spatial and environmental variation to the species compositional patterns. Spatially structured environmental and fine-scale spatial variables explained more tree compositional distribution than broad-scale spatial variables, suggesting that niche partitioning is the main process influencing forest species abundances along this gradient. However, vegetation compositional changes were mainly determined by the north–south topographic-climatic differences (primary coenocline), although steepness was also related to the particular location of some plant communities. Unimodal response curves dominate along the gradients, with tree species optima at different points, providing evidence of a sufficient amount of compositional turnover. Niche location of trait-related tree species is closely located. Tree species occupying environments with sharp contrast or transitional environments have broadest niches, whereas those species occupying localized habitats showed the narrowest niches. The methodology used provides an objective assessment of the shape of species' responses along complex ecological gradients, as well as of the spatial and environmental factors implicated in their distribution patterns using datasets from national forest inventories. The description of the main factors determining the gradients and the species distributions and niche characteristics will improve our ability to discuss potential conservation management goals or threats due to land uses changes and future climate change. Numéro de notice : A2016--101 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1093/forestry/cpv031 En ligne : https://doi.org/10.1093/forestry/cpv031 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84667 [article]