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Auteur Philippe Choler |
Documents disponibles écrits par cet auteur (5)
Affiner la rechercheAllergenicity to worldwide invasive grass Cortaderia selloana as environmental risk to public health / Marta Carboni in Ecology Letters, 19 (3) (2016)
Titre : Allergenicity to worldwide invasive grass Cortaderia selloana as environmental risk to public health Type de document : Imprimé Auteurs : Marta Carboni ; Tamara Münkemüller ; Sébastien Lavergne (1976-) ; Philippe Choler ; Benjamin Borgy ; Cyrille Violle ; Franz Essl (1973-) ; Cristina Roquet ; François Munoz (1978-) ; Wilfried Thuiller (1975-) Année de publication : 2016 Article en page(s) : 219-229 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Toxicité végétale
[LOTERRE-Biodiversité] ÉcotoxicologieMots-clés : Cortaderia selloana (Schult. & Schult.f.) Asch. & Graebn., 1900 Résumé : Whether the success of alien species can be explained by their functional or phylogenetic characteristics remains unresolved because of data limitations, scale issues and weak quantifications of success. Using permanent grasslands across France (50 000 vegetation plots, 2000 species, 130 aliens) and building on the Rabinowitz's classification to quantify spread, we showed that phylogenetic and functional similarities to natives were the most important correlates of invasion success compared to intrinsic functional characteristics and introduction history. Results contrasted between spatial scales and components of invasion success. Widespread and common aliens were similar to co-occurring natives at coarse scales (indicating environmental filtering), but dissimilar at finer scales (indicating local competition). In contrast, regionally widespread but locally rare aliens showed patterns of competitive exclusion already at coarse scale. Quantifying trait differences between aliens and natives and distinguishing the components of invasion success improved our ability to understand and potentially predict alien spread at multiple scales. Lien pérenne : DOI : 10.1111/ele.12556 / HAL : hal-01811228
Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=153128
in Ecology Letters > 19 (3) (2016) . - 219-229Carboni, Marta, Münkemüller, Tamara, Lavergne, Sébastien (1976-), Choler, Philippe, Borgy, Benjamin, Violle, Cyrille, Essl, Franz (1973-), Roquet, Cristina, Munoz, François (1978-), Thuiller, Wilfried (1975-) 2016 Allergenicity to worldwide invasive grass Cortaderia selloana as environmental risk to public health. Ecology Letters, 19(3): 219-229.Documents numériques
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article (2016)URL
Titre : Climatic drivers of greening trends in the Alps Type de document : Imprimé Auteurs : Gianluca Filippa ; Edoardo Cremonese ; Marta Galvagno ; Michel Isabellon ; Arthur Bayle ; Philippe Choler ; Bradley Z. Carlson ; Simone Gabellani ; Umberto Morra di Cella ; Mirco Migliavacca Année de publication : 2019 Article en page(s) : 1-15 Catégories : [CBNPMP-Géographique] Alpes
[CBNPMP-Thématique] Relations climat-végétation
[LOTERRE-Biodiversité] Changement climatiqueRésumé : Since the 1980s, vegetated lands have experienced widespread greening at the global scale. Numerous studies have focused on spatial patterns and mechanisms of this phenomenon, especially in the Arctic and sub-Arctic regions. Greening trends in the European Alps have received less attention, although this region has experienced strong climate and land-use changes during recent decades. We studied the rates and spatial patterns of greening in an inner-alpine region of the Western Alps. We used MODIS-derived normalized difference vegetation index (NDVI) at 8-day temporal and 250 m spatial resolution, for the period 2000–2018, and removed areas with disturbances in order to consider the trends of undisturbed vegetation. The objectives of this study were to (i) quantify trends of greening in a representative area of the Western Alps; and (ii) examine mechanisms and causes of spatial patterns of greening across different plant types. We show that 63% of vegetated areas experienced significant trends during the 2000–2018 period, of which only 8% were negative. We identify (i) a climatic control on spring and autumn phenology with contrasting effects depending on plant type and elevation, and (ii) land-use change dynamics, such as shrub encroachment on abandoned pastures and colonization of new surfaces at high elevation. Below 1500 m, warming temperatures promote incremental greening in the transition from spring to summer, but not in fall, suggesting either photoperiod or water limitation. In the alpine and sub-alpine belts (>1800 m asl), snow prevents vegetation development until late spring, despite favorable temperatures. Instead, at high elevation greening acts both in summer and autumn. However, photoperiod limitation likely prevents forested ecosystems from fully exploiting warmer autumn conditions. We furthermore illustrate two emblematic cases of prominent greening: recent colonization of previously glaciated/non vegetated areas, as well as shrub/tree encroachment due to the abandonment of agricultural practices. Our results demonstrate the interplay of climate and land-use change in controlling greening dynamics in the Western Alps. Lien pérenne : DOI : 10.3390/rs11212527 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148069
in Remote sensing > 11 (2019) . - 1-15Filippa, Gianluca, Cremonese, Edoardo, Galvagno, Marta, Isabellon, Michel, Bayle, Arthur, Choler, Philippe, Carlson, Bradley Z., Gabellani, Simone, Morra di Cella, Umberto, Migliavacca, Mirco 2019 Climatic drivers of greening trends in the Alps. Remote sensing, 11: 1-15.Documents numériques
Article (2019)URLGenetic introgression as a potential to widen a species' niche : insights from alpine Carex curvula / Philippe Choler (2004)
est un tiré à part de 101 (1) - 01/2004 (Proceedings of the National Academy of Sciences of the United States of America)
Titre : Genetic introgression as a potential to widen a species' niche : insights from alpine Carex curvula Type de document : Tiré à part de revue Auteurs : Philippe Choler ; B Erschbamer ; Andreas Tribsch ; Ludovic Gielly ; Pierre Taberlet Année de publication : 2004 Importance : 171-176 Langues : Anglais (eng) Lien pérenne : DOI : 10.1073/pnas.2237235100 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=131256 Choler, Philippe, Erschbamer, B, Tribsch, Andreas, Gielly, Ludovic, Taberlet, Pierre 2004 Genetic introgression as a potential to widen a species' niche : insights from alpine Carex curvula. Proceedings of the National Academy of Sciences of the United States of America, 101(1) : 171-176.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 13854 C Tiré à part Centre de documentation Tirés à part Consultable Documents numériques
Article (2004)URL
Titre : Long livestock farming history and human landscape shaping revealed by lake sediment DNA Type de document : Imprimé Auteurs : Charline Giguet-Covex ; Johan Pansu ; Fabien Arnaud ; Pierre-Jérôme Rey ; Christophe Griggo ; Ludovic Gielly ; Isabelle Domaison ; Eric Coissac ; Fernand David ; Philippe Choler ; Jérôme Poulenard ; Pierre Taberlet Année de publication : 2014 Article en page(s) : 3211 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Enjeux de conservation des lacs d'altitude Résumé : The reconstruction of human-driven, Earth-shaping dynamics is important for understanding past human/environment interactions and for helping human societies that currently face global changes. However, it is often challenging to distinguish the effects of the climate from human activities on environmental changes. Here we evaluate an approach based on DNA metabarcoding used on lake sediments to provide the first high-resolution reconstruction of plant cover and livestock farming history since the Neolithic Period. By comparing these data with a previous reconstruction of erosive event frequency, we show that the most intense erosion period was caused by deforestation and overgrazing by sheep and cowherds during the Late Iron Age and Roman Period. Tracking plants and domestic mammals using lake sediment DNA (lake sedDNA) is a new, promising method for tracing past human practices, and it provides a new outlook of the effects of anthropogenic factors on landscape-scale changes. Lien pérenne : DOI : 10.1038/ncomms4211 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150974
in Nature communications > 5 (2014) . - 3211Giguet-Covex, Charline, Pansu, Johan, Arnaud, Fabien, Rey, Pierre-Jérôme, Griggo, Christophe, Gielly, Ludovic, Domaison, Isabelle, Coissac, Eric, David, Fernand, Choler, Philippe, Poulenard, Jérôme, Taberlet, Pierre 2014 Long livestock farming history and human landscape shaping revealed by lake sediment DNA. Nature communications, 5: 3211.Documents numériques
Article (2014)URL
Titre : Observed long-term greening of alpine vegetation-a case study in the French Alps Type de document : Imprimé Auteurs : Bradley Z. Carlson ; Monica C. Corona ; Cédric Dentant (1976-) ; Richard Bonet ; Wilfried Thuiller (1975-) ; Philippe Choler Année de publication : 2017 Article en page(s) : 1-12 Catégories : [CBNPMP-Géographique] Alpes françaises
[CBNPMP-Géographique] Parc National des Ecrins
[LOTERRE-Biodiversité] Changement climatique
[CBNPMP-Thématique] Relations climat-végétationRésumé : We combined imagery from multiple sources (MODIS, Landsat-5, 7, 8) with land cover data to test for long-term (1984–2015) greening or browning trends of vegetation in a temperate alpine area, the Ecrins National Park, in the context of recent climate change and domestic grazing practices. We showed that over half (56%) of the Ecrins National Park displayed significant increases in peak normalized difference vegetation index (NDVImax) over the last 16 years (2000–2015). Importantly, the highest proportional increases in NDVImax occurred in rocky habitats at high elevations (> 2500 m a.s.l.). While spatial agreement in the direction of change in NDVImax as detected by MODIS and Landsat was high (76% overlap), correlations between log-response ratio values were of moderate strength (approx. 0.3). In the context of above treeline habitats, we found that proportional increases in NDVImax were higher between 1984 and 2000 than between 2000 and 2015, suggesting a slowing of greening dynamics during the recent decade. The timing of accelerated greening prior to 2000 coincided with a pronounced increase in the amount of snow-free growing degree-days that occurred during the 1980s and 1990s. In the case of grasslands and low-shrub habitats, we did not find evidence for a negative effect of grazing on greening trends, possibly due to the low grazing intensity typically found in the study area. We propose that the emergence of a longer and warmer growing season enabled high-elevation plant communities to produce more biomass, and also allowed for plant colonization of habitats previously characterized by long-lasting snow cover. Increasing plant productivity in an alpine context has potential implications for biodiversity trajectories and for ecosystem services in mountain landscapes. The presented evidence for long-term greening trends in a representative region of the European Alps provides the basis for further research on mechanisms of greening in alpine landscapes. Lien pérenne : DOI : 10.1088/1748-9326/aa84bd Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148066
in Environmental Research Letters > 12 (2017) . - 1-12Carlson, Bradley Z., Corona, Monica C., Dentant, Cédric (1976-), Bonet, Richard, Thuiller, Wilfried (1975-), Choler, Philippe 2017 Observed long-term greening of alpine vegetation-a case study in the French Alps. Environmental Research Letters, 12: 1-12.Documents numériques
Article (2017)URL
