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Abundance response of western European forest species along canopy openness and soil pH gradients / Rosalinde van Couwenberghe in Forest ecology and management, vol 262 n° 8 ([15/10/2011])  

Public [article]  inForest ecology and management > vol 262 n° 8 [15/10/2011] . - pp 1483 - 1490 Titre : Abundance response of western European forest species along canopy openness and soil pH gradients Type de document : Article/Communication Auteurs : Rosalinde van Couwenberghe, Auteur ; Catherine Collet, Auteur ; Eric Lacombe, Auteur ; Jean-Claude Gégout, Auteur Année de publication : 2011 Article en page(s) : pp 1483 - 1490 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] base de données naturalistes [Termes IGN] composition floristique [Termes IGN] flore locale [Termes IGN] forêt tempérée [Termes IGN] inventaire de la végétation [Termes IGN] régénération (sylviculture) [Termes IGN] relations plante - sol [Vedettes matières IGN] Foresterie Résumé : (auteur) In order to better understand the structure and composition of forest plant communities, we aimed to predict the abundance of understory herbaceous species locally at the stand level and according to different environments. For this, we seeked to model species distributions of abundance at a regional scale in relationship with the local stand structure (canopy openness) and regional soil resources (soil pH). Floristic inventories, performed in different light and soil conditions located in 1202 records of north eastern France, were used to analyze the combined effect of canopy openness and soil pH on the abundance of 12 common western European forest species: Anemone nemorosa, Deschampsia flexuosa, Festuca altissima, Hedera helix, Lamium galeobdolon, Lonicera periclymenum, Molinia caerulea, Oxalis acetosella, Pteridium aquilinum, Rubus fruticosus, Rubus idaeus, and Vaccinium myrtillus. Ordinal regression models relating species abundance responses to their environment were developed. For most species (eight out of 12), distribution was significantly affected by canopy openness and soil pH. Differences among low-abundance (i.e. cover 25%) responses were noted for 11 species along the canopy openness gradient and four species along the pH gradient. The present study quantifies optimal light and soil nutrient requirements for high-abundance responses and quantifies light and soil nutrients tolerance conditions for low-abundance responses. The combination of both factors highlights the pre-eminence of pH conditions occurrence and canopy openness for species abundance. The models developed by this study may be used to define canopy openness thresholds in function of soil characteristics to control the development of species during forest regeneration. The species-specific reactions on local canopy openness along a regional soil gradient illustrate the need for a species-specific management approach. Numéro de notice : A2011-564 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : 10.1016/j.foreco.2011.06.049 En ligne : https://doi.org/10.1016/j.foreco.2011.06.049 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76393 [article]