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A probabilistic eco-hydrological model to predict the effects of climate change on natural vegetation at a regional scale / Jan-Philip M. Witte in Landscape ecology, vol 30 n° 5 (May 2015)  

Public [article]  inLandscape ecology > vol 30 n° 5 (May 2015) . - pp 835 - 854 Titre : A probabilistic eco-hydrological model to predict the effects of climate change on natural vegetation at a regional scale Type de document : Article/Communication Auteurs : Jan-Philip M. Witte, Auteur ; Ruud P. Bartholomeus, Auteur ; Peter M. van Bodegom, Auteur ; D. Gijsbert Cirkel, Auteur ; Remco van Ek, Auteur ; Yuki Fujita, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 835 - 854 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] changement climatique [Termes IGN] facteur édaphique [Termes IGN] habitat (nature) [Termes IGN] hydrologie [Termes IGN] impact sur l'environnement [Termes IGN] modèle de simulation [Termes IGN] modèle stochastique [Vedettes matières IGN] Végétation et changement climatique Résumé : (auteur) Climate change may hamper the preservation of nature targets, but may create new potential hotspots of biodiversity as well. To timely design adequate measures, information is needed about the feasibility of nature targets under a future climate. Habitat distribution models may provide this, but current models have certain drawbacks: they apply indirect empirical relationships between habitat and vegetation, they often disregard spatially explicit information about groundwater, and they are designed for too coarse spatial scales. We introduce a model that explicitly takes into account spatial effects through groundwater and that can easily be adapted to new scientific approaches and the needs of end-users. It combines (spatially explicit) data sources, transfer functions derived from mechanistic models, and robust relationships between habitat factors and plant characteristics. Outputs are maps showing the occurrence probabilities of vegetation types and their associated conservation values, both on a spatial scale that fits the needs of nature managers and spatial planners. The model was applied to a catchment of 270 km2 to forecast, on a 25 m resolution, the effects of a national climate scenario (related to IPCC A2 and A1B). Computation time was a couple of minutes on a standard PC. Severe loss was predicted for wet and mesotrophic species-rich grasslands, while vegetation of dry and acidic soils appeared to profit. The results were not univocal though, and could probably not have been foreseen on the basis of expert judgement and logic alone, especially because of edaphic factors and spatial hydrological relationships. Numéro de notice : A2015--033 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s10980-014-0086-z Date de publication en ligne : 29/08/2014 En ligne : http://dx.doi.org/10.1007/s10980-014-0086-z Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81112 [article]