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Auteur Yohann Paillet |
Documents disponibles écrits par cet auteur (7)
Affiner la recherche2021 (18) - 25 aout 2021 - Évaluation statistique d’un protocole de relevés bryologiques pour inventorier et suivre la biodiversité en forêt (Naturae) / Marion Gosselin
Titre : 2021 (18) - 25 aout 2021 - Évaluation statistique d’un protocole de relevés bryologiques pour inventorier et suivre la biodiversité en forêt Type de document : Imprimé Auteurs : Marion Gosselin ; Serge Cadet ; Denis Cartier ; Yann Dumas ; Thierry Gautrot ; Frédéric Ritz ; Mirham Blin ; Johann Keller ; Jean-Christophe Gattus ; Mickaël Kaczmar ; Christian Marck ; Nicolas Debaive ; Vincent Boulanger ; Yohann Paillet ; Frédéric Gosselin Année de publication : 2021 Importance : 243-270 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Bryophytes
[CBNPMP-Thématique] Monitoring, suiviRésumé : Les Bryophytes représentent une partie importante de la biodiversité forestière. Pour étudier l’évolution de leur diversité dans le temps, ou entre modalités de gestion forestière, les protocoles de relevés doivent être adaptés à la diversité des supports colonisés, et reproductibles sans biais. Nous présentons le protocole standardisé que nous avons conçu et testé sur 14 massifs forestiers de plaine et de montagne en France métropolitaine (193 placettes). Sa faisabilité a été évaluée par retour d’expérience des opérateurs, et l’exhaustivité par la part d’espèces captées par le protocole en comparaison à des richesses de référence sur chaque placette. La reproductibilité a été évaluée par un test d’effet opérateur, sur des supports ayant chacun été inventorié par plusieurs opérateurs et fait l’objet d’un relevé de consensus. En combinant un inventaire dirigé par supports prédéfinis et un inventaire complémentaire en plein, notre protocole capte, pour les principaux types de supports, plus de 80 % de la richesse théorique calculée par l’indice Chao2. Augmenter le nombre de supports dans l’inventaire dirigé consommerait du temps pour un gain faible en espèces. L’effet opérateur joue sur le taux de détection des espèces, et peut être soit pris en compte dans les modélisations, soit réduit par entraînement. Notre protocole offre donc un bon compromis entre faisabilité, répétabilité et exhaustivité pour évaluer la diversité bryologique des peuplements forestiers de France métropolitaine dans la strate 0-2 m, dans le cadre de suivis temporels ou de comparaison de modalités écologiques ou de gestion. Lien pérenne : DOI : 10.5852/naturae2021a18 / HAL : hal-03326847
Permalink : https://biblio.cbnpmp.fr/index.php?lvl=bulletin_display&id=38782 Gosselin, Marion, Cadet, Serge, Cartier, Denis, Dumas, Yann, Gautrot, Thierry, Ritz, Frédéric, Blin, Mirham, Keller, Johann, Gattus, Jean-Christophe, Kaczmar, Mickaël, Marck, Christian, Debaive, Nicolas, Boulanger, Vincent, Paillet, Yohann, Gosselin, Frédéric 2021 Évaluation statistique d’un protocole de relevés bryologiques pour inventorier et suivre la biodiversité en forêt. Naturae, 2021(18). 243-270Documents numériques
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Numéro 2021-18 (2021)URLHow much does it take to be old? Modelling the time since the last harvesting to infer the distribution of overmature forests in France / Lucie Thompson in Diversity and Distributions, 28 (2022)
Titre : How much does it take to be old? Modelling the time since the last harvesting to infer the distribution of overmature forests in France Type de document : Imprimé Auteurs : Lucie Thompson ; Eugénie Cateau ; Nicolas Debaive ; Frédéric Bray ; André Torre ; Patrick Vallet ; Yohann Paillet Année de publication : 2022 Article en page(s) : 200-213 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Forêts (habitat) Résumé : Aim: The distribution of overmature forests in metropolitan France is poorly known, with only a few well-studied prominent sites, and has never been evaluated countrywide. Here, we modelled French forest reserves' time since the last harvesting operation—a proxy for forest maturity—then inferred the current statistical distribution of overmature forests (i.e., forests over 50 years without harvesting) in France. Location: Metropolitan France. Methods: We used inventories from forest reserves and managed forests to calibrate a generalised linear mixed model explaining the time since the last harvesting with selected structural attributes and environmental variables. We then projected this model on the independent National Forest Inventory dataset. We thus obtained an updated estimation of the proportion and a rough distribution of overmature forest stands in metropolitan France. Results: We found that high basal area of very large trees, high volumes of standing and downed deadwood, high diversity of tree-related microhabitats and more marginally diversity of decay stages best characterised the time since the last harvesting. Volumes of stumps and high density of coppices translating legacy of past forest management also distinguished more overmature plots. Our projection yielded an estimated 3% of French forests over 50 years without harvesting mostly located in more inaccessible areas (i.e., mountainous areas). Main conclusions: Our study showed that the time since the last harvesting could be derived from a combination of key structural attributes characterising overmature temperate forests. It gives the first robust statistical estimate of the proportion of overmature forests in France and may serve to report on their status. Our method could be extended in countries with accessible National Forest Inventory and calibration data, thus producing indicators at an international level. Lien pérenne : DOI : 10.1111/ddi.13436 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=151589
in Diversity and Distributions > 28 (2022) . - 200-213Thompson, Lucie, Cateau, Eugénie, Debaive, Nicolas, Bray, Frédéric, Torre, André, Vallet, Patrick, Paillet, Yohann 2022 How much does it take to be old? Modelling the time since the last harvesting to infer the distribution of overmature forests in France. Diversity and Distributions, 28: 200-213.Documents numériques
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Article (2022)URL
Titre : Nothing else matters? Tree diameter and living status have more effects than biogeoclimatic context on microhabitat number and occurrence : An analysis in French forest reserves Type de document : Imprimé Auteurs : Yohann Paillet ; Nicolas Debaive ; Frédéric Archaux ; Eugénie Cateau ; Olivier Gilg ; Eric Guilbert Année de publication : 2019 Article en page(s) : e0216500 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Forêts (habitat)
[CBNPMP-Thématique] BiodiversitéRésumé : Managing forests to preserve biodiversity requires a good knowledge not only of the factors driving its dynamics but also of the structural elements that actually support biodiversity. Tree-related microhabitats (e.g. cavities, cracks, conks of fungi) are tree-borne features that are reputed to support specific biodiversity for at least a part of species’ life cycles. While several studies have analysed the drivers of microhabitats number and occurrence at the tree scale, they remain limited to a few tree species located in relatively narrow biogeographical ranges. We used a nationwide database of forest reserves where microhabitats were inventoried on more than 22,000 trees. We analysed the effect of tree diameter and living status (alive or dead) on microhabitat number and occurrence per tree, taking into account biogeoclimatic variables and tree genus. We confirmed that larger trees and dead trees bore more microhabitats than their smaller or living counterparts did; we extended these results to a wider range of tree genera and ecological conditions than those studied before. Contrary to our expectations, the total number of microhabitat types per tree barely varied with tree genus–though we did find slightly higher accumulation levels for broadleaves than for conifers–nor did it vary with elevation or soil pH, whatever the living status. We observed the same results for the occurrence of individual microhabitat types. However, accumulation levels with diameter and occurrence on dead trees were higher for microhabitats linked with wood decay processes (e.g. dead branches or woodpecker feeding holes) than for other, epixylic, microhabitats such as epiphytes (ivy, mosses and lichens). Promoting large living and dead trees of several tree species may be a relevant, and nearly universal, way to favour microhabitats and enhance the substrates needed to support specific biodiversity. In the future, a better understanding of microhabitat drivers and dynamics at the tree scale may help to better define their role as biodiversity indicators for large-scale monitoring. Lien pérenne : DOI : 10.1371/journal.pone.0216500 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=153066
in PloS ONE > 14 (5) (2019) . - e0216500Paillet, Yohann, Debaive, Nicolas, Archaux, Frédéric, Cateau, Eugénie, Gilg, Olivier, Guilbert, Eric 2019 Nothing else matters? Tree diameter and living status have more effects than biogeoclimatic context on microhabitat number and occurrence : An analysis in French forest reserves. PloS ONE, 14(5): e0216500.Documents numériques
Article (2019)URLORCHAMP Observatoire spatio-temporel de la biodiversité et du fonctionnement des socio-écosystèmes de montagne / Amélie Saillard (2021)
Titre : ORCHAMP Observatoire spatio-temporel de la biodiversité et du fonctionnement des socio-écosystèmes de montagne Type de document : Imprimé Auteurs : Amélie Saillard ; Chloé Mahieu ; Maya Guéguen ; Jérôme Poulenard ; Sophie Labonne ; Yohann Paillet ; Julien Renaud ; Wilfried Thuiller (1975-) Editeur : ENSAIA Nancy , Laboratoire d'écologie alpine de Grenoble Année de publication : 2021 Importance : 55 p. Langues : Français (fre) Catégories : [CBNPMP-Thématique] Biodiversité
[CBNPMP-Thématique] Ecosystème
[CBNPMP-Thématique] Restauration des écosystèmes
[LOTERRE-Biodiversité] MontagnePermalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148670 Saillard, Amélie, Mahieu, Chloé, Guéguen, Maya, Poulenard, Jérôme, Labonne, Sophie, Paillet, Yohann, Renaud, Julien, Thuiller, Wilfried (1975-) , 2021. ORCHAMP Observatoire spatio-temporel de la biodiversité et du fonctionnement des socio-écosystèmes de montagne. ENSAIA Nancy , Laboratoire d'écologie alpine de Grenoble, [S.l.]. 55 pp.Exemplaires (1)
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Titre : Profile of tree-related microhabitats in European primary beech-dominated forests Type de document : Imprimé Auteurs : Daniel Kozak ; Martin Mikoláš ; Marek Svitok ; Radek Bače ; Yohann Paillet ; Laurent Larrieu (1963-) ; Thomas A. Nagel ; Krešimir Begović ; Vojtěch Čada ; Abdulla Diku ; Michal Frankovic ; Pavel Janda ; Ondrej Kameniar ; Srdjan Keren ; Peter Kjučukov ; Jana Lábusová ; Thomas Langbehn ; Jakub Malek ; Stjepan Mikac ; Robert C. Morissey ; Marketa Novakova ; Jonathan S. Schurrman ; Kristyna Svobodová ; Michal Synek ; Marius Teodosiu ; Elvin Toromani ; Volodymyr Trotsiuk ; Lucie Vitkova ; Miroslav Svoboda Année de publication : 2018 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Biodiversité
[CBNPMP-Thématique] Indicateur biologiqueMots-clés : Fagus sylvatica L., 1753 Résumé : Tree-related microhabitats (TreMs) are important features for the conservation of biodiversity in forest ecosystems. Although other structural indicators of forest biodiversity have been extensively studied in recent decades, TreMs have often been overlooked, either due to the absence of a consensual definition or a lack of knowledge. Despite the increased number of TreM studies in the last decade, the role of drivers of TreM profile in primary forests and across different geographical regions is still unknown. To evaluate the main drivers of TreM density and diversity, we conducted the first large-scale study of TreMs across European primary forests. We established 146 plots in eight primary forests dominated by European beech (Fagus sylvatica L.) in the Carpathian and Dinaric mountain ranges. Generalized linear mixed effect models were used to test the effect of local plot characteristics and spatial variability on the density and diversity (alpha, beta, and gamma) of TreMs. Total TreM density and diversity were significantly positively related with tree species richness and the proportion of snags. Root mean square tree diameters were significantly related to alpha and gamma diversity of TreMs. Both regions reached similarly high values of total TreM densities and total TreM densities and diversity were not significantly different between the two regions; however, we observed between the two regions significant differences in the densities of two TreM groups, conks of fungi and epiphytes. The density and diversity of TreMs were very high in beech-dominated mountain primary forests, but their occurrence and diversity was highly variable within the landscapes over relatively short spatial gradients (plot and stand levels). Understanding these profile provides a benchmark for further comparisons, such as with young forest reserves, or for improving forest management practices that promote biodiversity. Lien pérenne : DOI : 10.1016/j.foreco.2018.07.021 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=83362
in Forest ecology and management > 429 (1 December 2018)Kozak, Daniel, Mikoláš, Martin, Svitok, Marek, Bače, Radek, Paillet, Yohann, Larrieu, Laurent (1963-), Nagel, Thomas A., Begović, Krešimir, Čada, Vojtěch, Diku, Abdulla, Frankovic, Michal, Janda, Pavel, Kameniar, Ondrej, Keren, Srdjan, Kjučukov, Peter, Lábusová, Jana, Langbehn, Thomas, Malek, Jakub, Mikac, Stjepan, Morissey, Robert C., Novakova, Marketa, Schurrman, Jonathan S., Svobodová, Kristyna, Synek, Michal, Teodosiu, Marius, Toromani, Elvin, Trotsiuk, Volodymyr, Vitkova, Lucie, Svoboda, Miroslav 2018 Profile of tree-related microhabitats in European primary beech-dominated forests. Forest ecology and management, 429.Documents numériques
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