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Vegetation classification and biogeography of European floodplain forests and alder carrs / Jan Douda in Applied Vegetation Science, vol 19 n° 1 (January 2016)  

Public [article]  inApplied Vegetation Science > vol 19 n° 1 (January 2016) . - pp 147 - 163 Titre : Vegetation classification and biogeography of European floodplain forests and alder carrs Type de document : Article/Communication Auteurs : Jan Douda, Auteur ; Karel Boublík, Auteur ; Michal Slezák, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 147 - 163 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Alnus (genre) [Termes IGN] Alnus glutinosa [Termes IGN] Alnus incana [Termes IGN] analyse de groupement [Termes IGN] biogéographie [Termes IGN] classification barycentrique [Termes IGN] classification dirigée [Termes IGN] Europe (géographie physique) [Termes IGN] forêt marécageuse [Termes IGN] forêt ripicole [Termes IGN] Fraxinus angustifolia [Termes IGN] Fraxinus excelsior [Termes IGN] Platanus orientalis [Termes IGN] Populus alba [Termes IGN] Populus nigra [Vedettes matières IGN] Ecologie forestière Résumé : (auteur) Aim : Formalized classifications synthesizing vegetation data at the continental scale are being attempted only now, although they are of key importance for nature conservation planning. Therefore, we aim to provide a vegetation classification and to describe the main biogeographical patterns of floodplain forests and alder carrs in Europe. Location : Europe. Methods : A database of more than 40 000 vegetation plots of floodplain forests and alder carrs across Europe was compiled. After geographic stratification, 16 392 plots were available for classification, which was performed using the supervised method Cocktail. We also searched for new associations using semi-supervised K-means classification. The main biogeographic patterns and climate-related gradients in species composition were determined using detrended correspondence analysis and cluster analysis. Results : Thirty associations of floodplain forests and alder carrs were distinguished, which belong to five alliances. The Alnion incanae includes riparian, seepage and hardwood floodplain forests in the nemoral and hemiboreal zones (dominated by Alnus glutinosa and Fraxinus excelsior) and in the boreal zone (dominated by A. incana). The Osmundo-Alnion represents oceanic vegetation dominated by Alnus glutinosa, Fraxinus angustifolia and F. excelsior distributed mostly on the Iberian Peninsula and composed of species with Atlantic distribution and Iberian endemics. The Populion albae comprises floodplain forests frequently dominated by Fraxinus angustifolia, Populus alba and P. nigra that are widespread in floodplains of large rivers under summer-dry climates in the Mediterranean region. The Platanion orientalis represents eastern Mediterranean floodplain forests dominated by Platanus orientalis. The Alnion glutinosae includes forest swamps dominated by Alnus glutinosa distributed mostly in the nemoral and hemiboreal zones. The main biogeographic patterns within European floodplain forests and alder carrs reflect the climatic contrasts between the Mediterranean, nemoral, boreal and mountain regions. Oceanic floodplain forests differ from those in the rest of Europe. The hydrological regime appears to be the most important factor influencing species composition within regions. Conclusions : This study is the first applying a formalized classification at the association level for a broad vegetation type at the continental scale. The proposed classification provides the scientific basis for the necessary improvement of the habitat classification systems used in European nature conservation. Numéro de notice : A2016-363 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1111/avsc.12201 En ligne : http://dx.doi.org/10.1111/avsc.12201 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81102 [article]

Plant species coexistence at local scale in temperate swamp forest: test of habitat heterogeneity hypothesis / Jan Douda in Oecologia, vol 169 n° 2 (June 2012)

Public [article]  inOecologia > vol 169 n° 2 (June 2012) . - pp 523 - 534 Titre : Plant species coexistence at local scale in temperate swamp forest: test of habitat heterogeneity hypothesis Type de document : Article/Communication Auteurs : Jan Douda, Auteur ; Jana Doudova-Kochankova, Auteur ; Karel Boublík, Auteur ; Alena Drasnarova, Auteur Année de publication : 2012 Article en page(s) : pp 523 - 534 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] forêt marécageuse [Termes IGN] habitat (nature) [Termes IGN] habitat forestier [Termes IGN] hétérogénéité environnementale [Termes IGN] niveau local [Termes IGN] phytosociologie [Termes IGN] processus spatial [Vedettes matières IGN] Ecologie forestière Résumé : (auteur) It has been suggested that a heterogeneous environment enhances species richness and allows for the coexistence of species. However, there is increasing evidence that environmental heterogeneity can have no effect or even a negative effect on plant species richness and plant coexistence at a local scale. We examined whether plant species richness increases with local heterogeneity in the water table depth, microtopography, pH and light availability in a swamp forest community at three local spatial scales (grain: 0.6, 1.2 and 11.4 m). We also used the variance partitioning approach to assess the relative contributions of niche-based and other spatial processes to species occurrence. We found that heterogeneity in microtopography and light availability positively correlated with species richness, in accordance with the habitat heterogeneity hypothesis. However, we recorded different heterogeneity– diversity relationships for particular functional species groups. An increase in the richness of bryophytes and woody plant species was generally related to habitat heterogeneity at all measured spatial scales, whereas a low impact on herbaceous species richness was recorded only at the 11.4 m scale. The distribution of herbaceous plants was primarily explained by other spatial processes, such as dispersal, in contrast to the occurrence of bryophytes, which was better explained by environmental factors. Our results suggest that both niche-based and other spatial processes are important determinants of the plant composition and species turnover at local spatial scales in swamp forests. Numéro de notice : A2012-137 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81640 [article]

Development of alder carr after the abandonment of wet grasslands during the last 70 years / Jan Douda in Annals of Forest Science, Vol 66 n° 7 (October - November 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 7 (October - November 2009) . - n° 712 Titre : Development of alder carr after the abandonment of wet grasslands during the last 70 years Titre original : Développement de taillis d'aunes après l'abandon des prairies humides au cours des 70 dernières années Type de document : Article/Communication Auteurs : Jan Douda, Auteur ; Alžbeta Cejková, Auteur ; Karel Douda, Auteur ; Jana Kochánková, Auteur Année de publication : 2009 Article en page(s) : n° 712 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] Alnus glutinosa [Termes IGN] dendrochronologie [Termes IGN] foresterie [Termes IGN] photographie aérienne [Termes IGN] prairie [Termes IGN] République Tchèque [Termes IGN] taillis [Termes IGN] zone humide Résumé : (Auteur) The secondary succession of wet grasslands to communities of alder carr dominated by Alnus glutinosa was recorded in different parts of Europe during the 20th century. However, knowledge of such development of alder carr remains insufficient. The development of alder carr was reconstructed at five sites in the Czech Republic, using historical aerial photographs and methods of dendrochronology. The aims were to investigate the succession from wet grasslands to alder carr at sites previously intensively managed for agriculture and to find out the role of fluctuations in the groundwater table, caused by artificial drainage channels, in the observed stand dynamics and tree growth. The spread of forest (i.e., an increase in forest cover) predominated until the 1970s at all sites. This trend was disrupted by a large-scale dieback of forest stands in four of the five sites after the 1970s, followed by an increase in patch heterogeneity, as indicated by landscape metrics. The radial growth increment in Alnus glutinosa has been affected predominately by local environmental factors, probably including the changing degree of waterlogging. Forest dieback was presumably connected with a lesser extent of drainage channels. Our results indicate that observed successional pathways at sites of alder carr were probably caused by local changes in the groundwater table. Numéro de notice : A2009-633 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest/2009065 Date de publication en ligne : 02/10/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/07/f08253/f08253.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72836 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000668	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt