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Auteur Serge Cadet |
Documents disponibles écrits par cet auteur (3)
Ajouter le résultat dans votre panier Affiner la recherche Interroger des sources externesA limited number of species is sufficient to assign a vegetation plot to a forest vegetation unit / Lise Maciejewski in Applied Vegetation Science, vol 25 n° 1 (January/March 2022)
Titre : A limited number of species is sufficient to assign a vegetation plot to a forest vegetation unit Type de document : Article/Communication Auteurs : Lise Maciejewski, Auteur ; Paulina E. Pinto, Auteur ; Stéphanie Wurpillot Année de publication : 2022 Projets : ARBRE / AgroParisTech (2007 -) Article en page(s) : n° e12650 Note générale : bibliographie
This study was supported by the French National Institute for Agricultural, Food and Environmental Research (Forest Grassland and Freshwater Ecology Department, EFPA) through the ONF- INRAE Interface Grant N° 12000381 ‘Station, distribution, croissance et choix des essences dans un contexte environnemental changeant’, and by the French National Research Agency (ANR) through the Laboratory of Excellence ARBRE (ANR-12-LABXARBRE-01).Langues : Anglais (eng) Descripteur : [Termes IGN] France (administrative)
[Termes IGN] phytosociologie
[Termes IGN] unité phytosociologique
[Vedettes matières IGN] BotaniqueRésumé : (auteur) Aims : Inventorying the habitats composing Natura 2000 sites is mandatory in the European Union and is necessary to implement relevant conservation measures. Vegetation plots, recording the presence or abundance of all plant species co-occurring within a plot, are currently used to identify terrestrial Natura 2000 habitat types, whose descriptions are mainly based on phytosociological units. However, vegetation plots are time-consuming and frequently restricted to the growing season. Moreover, no vegetation plots can be regarded as exhaustive, and significant inter-observer variation has been highlighted. We studied whether reducing the number of recorded species and the time spent carrying out a vegetation plot had an impact on vegetation unit assignment using species presence. We also studied if vegetation plots recorded in winter could be used for vegetation unit assignment.
Location : Mainland France.
Methods : We used 273 vegetation plots covering French temperate and mountainous forests. The time at which species were sighted was recorded. We also estimated whether a species was recognisable in winter. We used a classification program to compare assignments based on complete and incomplete vegetation plots.
Results : Ten species and five minutes were sufficient to assign a plot to an association, and to an alliance, seven species and four minutes. Vegetation unit assignment proved feasible in winter, especially at the alliance level.
Conclusions : We confirmed that a limited number of species is sufficient to assign vegetation plots to vegetation units. However, mapping habitats requires habitat identification and delimitation. This study confirms current field habits, particularly when creating a habitat map, usually based on a limited number of recorded species. Lastly, it confirms that the use of vegetation plots coming from a great variety of sources is relevant to create habitat time series, crucial tools for monitoring habitats at a national scale.Numéro de notice : A2022-455 Affiliation des auteurs : IGN+Ext (2020- ) Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/avsc.12650 Date de publication en ligne : 26/02/2022 En ligne : https://doi.org/10.1111/avsc.12650 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101086
in Applied Vegetation Science > vol 25 n° 1 (January/March 2022) . - n° e12650[article]
Titre : Les habitats forestiers des Alpes du Sud Type de document : Monographie Auteurs : Sébastien Delhaye Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN (2012-) Année de publication : 2022 Importance : 241 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-2-7585-5172-0 Note générale : Nous remercions les institutions qui ont permis le financement de cet ouvrage :
• DREAL PACA : Directions régionales de l'environnement, de l'aménagement et du logement de la Provence-Alpes-Côte d’azur
• DRAAF PACA : Direction régionale de l’alimentation, de l’agriculture et de la forêt de Provence-Alpes-Côte d’Azur
• IGN : Institut national de l'information géographique et forestière
• ONF : Office national des forêts
• CBNmed : Conservatoire botanique national méditerranéen
• UMS PatriNat (OFB-CNRS-MNHN) : Unité mixte de service patrimoine naturel (Office français de la biodiversité-Centre national de la recherche scientifique, Muséum national d’histoire naturelle)
• IDF : Institut pour le développement forestierLangues : Français (fre) Descripteur : [Termes IGN] Alpes-de-haute-provence (04)
[Termes IGN] Alpes-maritimes (06)
[Termes IGN] Drôme (26)
[Termes IGN] étage de végétation
[Termes IGN] grande région écologique
[Termes IGN] habitat forestier
[Termes IGN] Hautes-Alpes (05)
[Termes IGN] Isère (38)
[Vedettes matières IGN] Ecologie forestièreNuméro de notice : 17130 Affiliation des auteurs : IGN+Ext (2020- ) Thématique : BIODIVERSITE/FORET Nature : Monographie nature-HAL : OuvrScient DOI : sans En ligne : https://inventaire-forestier.ign.fr/IMG/pdf/fiches_hab_alpes-sud.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102366
Titre : Vegetation unit assignments: phytosociology experts and classification programs show similar performance but low convergence Type de document : Article/Communication Auteurs : Lise Maciejewski, Auteur ; Paulina E. Pinto, Auteur ; Stéphanie Wurpillot Année de publication : 2020 Projets : 1-Pas de projet / AgroParisTech (2007 -) Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] classification automatique
[Termes IGN] cohérence des données
[Termes IGN] convergence
[Termes IGN] écosystème forestier
[Termes IGN] phytosociologie
[Termes IGN] unité phytosociologique
[Vedettes matières IGN] Ecologie forestièreRésumé : (auteur) Aims : Assigning vegetation plots to vegetation units is a key step in biodiversity management projects. Nevertheless, the process of plot assignment to types is usually non‐standardized, and assignment consistency remains poorly explored. To date, the efficiency of automatic classification programs has been assessed by comparing them with a unique expert judgment. Therefore, we investigated the consistency of five phytosociology expert judgments, and the consistency of these judgements with those of automatic classification programs.
Location : Mainland France.
Methods : We used 273 vegetation plots distributed across France and covering the diversity of the temperate and mountainous forest ecosystems of Western Europe. We asked a representative panel of five French organizations with recognized expertise in phytosociology to assign each plot to vegetation units. We provided a phytosociological classification including 228 associations, 43 alliances and eight classes. The assignments were compared among experts using an agreement ratio. We then compared the assignments suggested by three automatic classification programs with the expert judgments.
Results : We observed small differences among the agreement ratios of the expert organizations; a given expert organization agreed with another one on association assignment one time in four on average, and one time in two on alliance assignment. The agreement ratios of the automatic classification programs were globally lower, but close to expert judgments.
Conclusions : The results support the current trend toward unifying the existing classifications and specifying the assignment rules by creating guiding tools, which will decrease inter‐observer variation. As compared to a pool of phytosociology experts, programs perform similarly to individual experts in vegetation unit assignment, especially at the alliance level. Although programs still need to be improved, these results pave the way for the creation of habitat time series crucial for the monitoring and conservation of biodiversity.Numéro de notice : A2020-461 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : BIODIVERSITE/FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/avsc.12516 Date de publication en ligne : 12/07/2020 En ligne : https://doi.org/10.1111/avsc.12516 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95579
in Applied Vegetation Science > vol 23 n° 4 (October 2020)[article]
