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How much does climate change threaten European forest tree species distributions? / Marcin K. Dyderski in Global change biology, vol 24 n° 3 (March 2018)  

Public [article]  inGlobal change biology > vol 24 n° 3 (March 2018) Titre : How much does climate change threaten European forest tree species distributions? Type de document : Article/Communication Auteurs : Marcin K. Dyderski, Auteur ; Sonia Paz, Auteur ; Lee E. Frelich, Auteur ; Andrzej M. Jagodzinski, Auteur Année de publication : 2018 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Abies alba [Termes IGN] Betula pendula [Termes IGN] changement climatique [Termes IGN] distribution spatiale [Termes IGN] Fagus sylvatica [Termes IGN] forêt tempérée [Termes IGN] Fraxinus excelsior [Termes IGN] gestion forestière [Termes IGN] habitat (nature) [Termes IGN] inventaire forestier étranger (données) [Termes IGN] Larix decidua [Termes IGN] modèle de simulation [Termes IGN] Picea abies [Termes IGN] Pinus sylvestris [Termes IGN] Pseudotsuga menziesii [Termes IGN] Quercus pedunculata [Termes IGN] Quercus rubra [Termes IGN] Quercus sessiliflora [Termes IGN] Robinia pseudoacacia [Vedettes matières IGN] Végétation et changement climatique Résumé : (auteur) Although numerous species distribution models have been developed, most were based on insufficient distribution data or used older climate change scenarios. We aimed to quantify changes in projected ranges and threat level by the years 2061-2080, for 12 European forest tree species under three climate change scenarios. We combined tree distribution data from the Global Biodiversity Information Facility, EUFORGEN and forest inventories, and we developed species distribution models using MaxEnt and 19 bioclimatic variables. Models were developed for three climate change scenarios – optimistic (RCP2.6), moderate (RCP4.5) and pessimistic (RPC8.5) – using three General Circulation Models, for the period 2061-2080. Our study revealed different responses of tree species to projected climate change. The species may be divided into three groups: “winners” – mostly late-successional species: Abies alba, Fagus sylvatica, Fraxinus excelsior, Quercus robur and Q. petraea; “losers” – mostly pioneer species: Betula pendula, Larix decidua, Picea abies and Pinus sylvestris and alien species – Pseudotsuga menziesii, Q. rubra and Robinia pseudoacacia, which may be also considered as “winners”. Assuming limited migration, most of the species studied would face significant decrease of suitable habitat area. The threat level was highest for species that currently have the northernmost distribution centers. Ecological consequences of the projected range contractions would be serious for both forest management and nature conservation. Numéro de notice : A2018-379 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1111/gcb.13925 En ligne : http://doi.org/10.1111/gcb.13925 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=87220 [article]

Continuum of floristic composition between two plant communities – Carici elongatae-Alnetum and Fraxino-Alnetum / Natalia Czapiewska in Forest research papers, vol 78 n° 4 (November 2017)  

Public [article]  inForest research papers > vol 78 n° 4 (November 2017) . - pp 285 - 296 Titre : Continuum of floristic composition between two plant communities – Carici elongatae-Alnetum and Fraxino-Alnetum Type de document : Article/Communication Auteurs : Natalia Czapiewska, Auteur ; Sonia Paz, Auteur ; Marcin K. Dyderski, Auteur ; Andrzej M. Jagodzinski, Auteur Année de publication : 2017 Article en page(s) : pp 285 - 296 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Alnus (genre) [Termes IGN] carex (genre) [Termes IGN] continuité écologique [Termes IGN] dynamique de la végétation [Termes IGN] forêt marécageuse [Termes IGN] forêt ripicole [Termes IGN] Fraxinus (genre) [Termes IGN] incertitude des données [Termes IGN] phytosociologie [Termes IGN] placette d'échantillonnage [Termes IGN] unité phytosociologique [Vedettes matières IGN] Ecologie forestière Résumé : (Auteur) One of the crucial debates in vegetation ecology is whether plant communities are discontinuous, distinguishable units or whether they change continuously. Phytosociology assumes discontinuity and its methodology requires subjective sampling during vegetation inventories. For that reason, some researchers argue that phytosociology artificially creates discontinuity among plant communities. Our aim was to assess the continuity between ash-alder riparian forest (Fraxino-Alnetum), and alder swamp forest (Carici elongatae-Alnetum), and to check whether discontinuity observed between these two plant associations is an effect of subjective sample plot choice. We conducted 57 phytosociological relevés within a regular grid covering potential sites of both plant communities. All relevés were arranged in order of decreasing relative cover of the diagnostic species for each plant association resulting in a gentle gradient, indicating a continuous transition from Fraxino-Alnetum to Carici elongatae-Alnetum. Similar results were obtained by detrended correspondence analysis. The proportion of species from the Querco-Fagetea class, typical to Fraxino-Alnetum, was decreasing with increasing proportion of species from the Alnetea glutinosae class, typical to Carici elongatae-Alnetum. This shift followed a gradient of ecological light-moisture indicator values. Our results confirmed continuous transition between two plant communities and led us to the conclusion that discontinuity resulted from the standard sampling protocol used in classical phytosociology. This protocol, however, is useful in searching for typological patterns, required for classification of plant communities, which is the main aim of phytosociology. Nevertheless, it does not provide full insight into the variability of vegetation and introduces uncertainty when trying to understand ecosystem dynamics. This uncertainty should be taken into account when phytosociological data are used for nature conservation recommendations and to draw conclusion about vegetation dynamics. Numéro de notice : A2017-879 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1515/frp-2017-0032 Date de publication en ligne : 17/05/2018 En ligne : https://doi.org/10.1515/frp-2017-0032 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91160 [article]