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Deadwood and tree microhabitat dynamics in unharvested temperate mountain mixed forests: A life-cycle approach to biodiversity monitoring / Laurent Larrieu in Forest ecology and management, vol 334 ([15/12/2014])
[article]
Titre : Deadwood and tree microhabitat dynamics in unharvested temperate mountain mixed forests: A life-cycle approach to biodiversity monitoring Type de document : Article/Communication Auteurs : Laurent Larrieu, Auteur ; Alain Cabanettes, Auteur ; Pierre Gonin, Auteur ; Thibault Lachat, Auteur ; Yoan Paillet, Auteur ; Stephan Winter, Auteur ; Christophe Bouget, Auteur ; Marc Deconchat, Auteur Année de publication : 2014 Article en page(s) : pp 163 - 173 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] bois mort
[Termes IGN] dynamique de la végétation
[Termes IGN] forêt alpestre
[Termes IGN] forêt tempérée
[Termes IGN] Fraxinus excelsior
[Termes IGN] microhabitat
[Termes IGN] placette d'échantillonnage
[Termes IGN] Prunus avium
[Termes IGN] Sorbus (genre)
[Termes IGN] surveillance écologique
[Termes IGN] xylophage
[Vedettes matières IGN] Ecologie forestièreRésumé : (auteur) In forest ecosystems, conservation is often considered in the absence of any long-term dynamic perspective, yet dynamic processes extend over hundreds of years. Saproxylic taxa represent about 25% of the species diversity in temperate and boreal forests and they depend on both spatial and temporal continuity in the availability of deadwood and certain tree microhabitats. Our study focused on the dynamics of deadwood and tree microhabitats throughout the silvigenetic cycle in 32 unharvested European mountain mixed forests. Our dataset contained 178 plots classified into one of five forest development phases (regeneration, establishing, growing, culmination and disintegration). We analyzed how the amount and quality of deadwood and microhabitats varied according to the five phases. Contrary to expectations, deadwood and tree microhabitat availability remained more or less stable throughout the silvigenetic cycle, both in quantity and diversity. Furthermore, whether the forests were dominated by broadleaves or conifers, there were no significant differences in terms of deadwood or tree microhabitat dynamics. Pioneer (Betula spp., Salix spp.) and post-pioneer species (Fraxinus exelsior, Sorbus spp., Prunus avium) played an important role throughout the silvigenetic cycle by providing a diversity of deadwood when deadwood from the dominant species (i.e. Abies alba, Fagus sylvatica, Picea abies) was scarce. Understanding the dynamics of deadwood and tree microhabitats may help us provide a model for forest managers who intend to emulate natural forest dynamics and will also improve our understanding of the relationship between forest dynamics and biodiversity conservation. Numéro de notice : A2014-597 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : 10.1016/j.foreco.2014.09.007 En ligne : http://dx.doi.org/10.1016/j.foreco.2014.09.007 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81010
in Forest ecology and management > vol 334 [15/12/2014] . - pp 163 - 173[article]Alien species pool influences the level of habitat invasion in intercontinental exchange of alien plants / Veronica Kalusová in Global ecology and biogeography, vol 23 n° 12 (December 2014)
[article]
Titre : Alien species pool influences the level of habitat invasion in intercontinental exchange of alien plants Type de document : Article/Communication Auteurs : Veronica Kalusová, Auteur ; Milan Chytrý, Auteur ; Robert K. Peet, Auteur ; Thomas R. Wentworth, Auteur Année de publication : 2014 Article en page(s) : pp 1366 - 1375 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Caroline du Nord (Etats-Unis)
[Termes IGN] Caroline du Sud (Etats-Unis)
[Termes IGN] espèce exotique envahissante
[Termes IGN] habitat d'espèce
[Termes IGN] habitat forestier
[Termes IGN] placette d'échantillonnage
[Termes IGN] République Tchèque
[Vedettes matières IGN] Ecologie forestièreRésumé : (auteur) Aim : We hypothesize that the level of plant invasion at the scale of vegetation plots is affected by the different sizes of regional species pools of alien plants adapted to particular habitats. We test these species-pool effects in the context of alien species exchange between analogous habitats on two continents.
Location : North and South Carolina, and the Czech Republic (both as native and invaded range).
Methods : We identified native and alien vascular plant species within 6059 vegetation plots from 27 habitats of eastern North America and Central Europe. We compared the habitats’ level of invasion, expressed as the proportion of alien species in a representative sample of vegetation plots from each habitat, with the contribution of each habitat to the alien species pool, calculated as the proportion of species of this habitat that are native to one continent and donated as aliens to the other.
Results : A habitat's level of invasion on one continent increases with the proportion of alien species donated to its regional species pools by analogous habitats on the other continent, i.e. the more of its native species a habitat contributes as aliens, the more of them establish in analogous recipient habitats (direct species-pool effect). The habitat's level of invasion on the same continent also increases with the proportion of native species that those habitats themselves donate to regional species pools on the other continent, i.e. a habitat that gives many aliens also receives many aliens (reciprocal species-pool effect).
Main conclusions : We demonstrate that when a habitat on one continent donates more of its native species to the alien species pool, the analogous habitat on the recipient continent also contains a greater number of aliens. The same donor habitat is itself also the recipient of more alien species invading from the analogous habitats of other continents.Numéro de notice : A2014-791 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1111/geb.12209 En ligne : http://dx.doi.org/10.1111/geb.12209 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80342
in Global ecology and biogeography > vol 23 n° 12 (December 2014) . - pp 1366 - 1375[article]Stand structure and plant species occurrence in forest edge habitat along different aged roads on Okinawa Island, southwestern Japan / Tsutomu Enoki in Journal of Forest Research, vol 19 n° 1 (February 2014)
[article]
Titre : Stand structure and plant species occurrence in forest edge habitat along different aged roads on Okinawa Island, southwestern Japan Type de document : Article/Communication Auteurs : Tsutomu Enoki, Auteur ; Buntarou Kusumoto, Auteur ; Shuichi Igarashi, Auteur ; Kazuki Tsuji, Auteur Année de publication : 2014 Article en page(s) : pp 97 - 104 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse diachronique
[Termes IGN] forêt tropicale
[Termes IGN] impact sur l'environnement
[Termes IGN] Japon
[Termes IGN] lisière
[Termes IGN] peuplement forestier
[Termes IGN] peuplement végétal
[Termes IGN] placette d'échantillonnage
[Termes IGN] route
[Vedettes matières IGN] Inventaire forestierRésumé : (auteur) We compared stand structure and plant species occurrence on the shoulders of 3-, 10- and 20-year-old roads in a subtropical evergreen broad-leaved forest to document temporal changes in edge effects of forest roads. We recorded 154 vascular species in the study plots, including 3 non-native species. We used generalized linear mixed models to analyze changes in forest structure and plant species composition in relationship to the distance from forest roads. The spatial patterns in stand structure at different distances from roads differed with road age. The large canopy openness on the edge of 3-year-old roads decreased with time after the construction. A progressive decrease in tree height on roadsides was observed after the road construction, suggesting tall trees could not withstand the dry and windy roadside environment. The edge effect on the canopy tended to be larger at higher elevation sites. The spatio-temporal pattern of species occurrence based on distance from roads differed by species. Typical pioneer species such as Schima wallichii and Eurya japonica increased along the edge, while less aggressive pioneer species and understory species decreased. As time passed after the road construction, some climax and understory species decreased at the forest edge, while other climax and understory species increased. The modeling methods proposed in this study could be applied to different roadside and edge study sites. Numéro de notice : A2014-188 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s10310-012-0383-9 En ligne : https://doi.org/10.1007/s10310-012-0383-9 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78309
in Journal of Forest Research > vol 19 n° 1 (February 2014) . - pp 97 - 104[article]Mapping a priori defined plant associations using remotely sensed vegetation characteristics / Hans D. Rölofsen in Remote sensing of environment, vol 140 (January 2014)
[article]
Titre : Mapping a priori defined plant associations using remotely sensed vegetation characteristics Type de document : Article/Communication Auteurs : Hans D. Rölofsen, Auteur ; Lammert Kooistra, Auteur ; Peter M. van Bodegom, Auteur ; Jochem Verrelst, Auteur ; Johan Krol, Auteur ; Jan-Philip M. Witte, Auteur Année de publication : 2014 Article en page(s) : pp 639 - 651 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] caractérisation
[Termes IGN] classification
[Termes IGN] humidité du sol
[Termes IGN] image aérienne
[Termes IGN] image multibande
[Termes IGN] nutriment végétal
[Termes IGN] Pays-Bas
[Termes IGN] phytosociologie
[Termes IGN] placette d'échantillonnage
[Termes IGN] répartition géographique
[Termes IGN] salinité
[Vedettes matières IGN] Ecologie forestièreRésumé : (auteur) Incorporation of a priori defined plant associations into remote sensing products is a major challenge that has only recently been confronted by the remote sensing community. We present an approach to map the spatial distribution of such associations by using plant indicator values (IVs) for salinity, moisture and nutrients as an intermediate between spectral reflectance and association occurrences. For a 12 km2 study site in the Netherlands, the relations between observed IVs at local vegetation plots and visible and near-infrared (VNIR) and short-wave infrared (SWIR) airborne reflectance data were modelled using Gaussian Process Regression (GPR) (R2 0.73, 0.64 and 0.76 for salinity, moisture and nutrients, respectively). These relations were applied to map IVs for the complete study site. Association occurrence probabilities were modelled as function of IVs using a large database of vegetation plots with known association and IVs. Using the mapped IVs, we calculated occurrence probabilities of 19 associations for each pixel, resulting in both a crisp association map with the most likely occurring association per pixel, as well as occurrence probability maps per association. Association occurrence predictions were assessed by a local vegetation expert, which revealed that the occurrences of associations situated at frequently predicted indicator value combinations were over predicted. This seems primarily due to biases in the GPR predicted IVs, resulting in associations with envelopes located in extreme ends of IVs being scarcely predicted. Although the results of this particular study were not fully satisfactory, the method potentially offers several advantages compared to current vegetation classification techniques, like site-independent calibration of association probabilities, site-independent selection of associations and the provision of IV maps and occurrence probabilities per association. If the prediction of IVs can be improved, this method may thus provide a viable roadmap to bring a priori defined plant associations into the domain of remote sensing. Numéro de notice : A2014-796 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2013.09.030 En ligne : https://doi.org/10.1016/j.rse.2013.09.030 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81015
in Remote sensing of environment > vol 140 (January 2014) . - pp 639 - 651[article]Single tree detection from airborne laser scanning data using a marked point process based method / Junjie Zhang in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol II-3 W1 (May 2013)
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Titre : Single tree detection from airborne laser scanning data using a marked point process based method Type de document : Article/Communication Auteurs : Junjie Zhang, Auteur ; Gunho Sohn, Auteur ; Mathieu Brédif , Auteur Année de publication : 2013 Conférence : ISPRS VCM 2013, ISPRS Workshop on 3D Virtual City Modeling 28/05/2013 25/05/2013 Regina Saskatchewan - Canada OA ISPRS Annals Article en page(s) : pp 41 - 46 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] algorithme du gradient
[Termes IGN] arbre (flore)
[Termes IGN] détection d'objet
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] enthalpie libre
[Termes IGN] forêt
[Termes IGN] modèle numérique de surface de la canopée
[Termes IGN] placette d'échantillonnage
[Termes IGN] programmation par contraintes
[Termes IGN] reconstruction d'objetMots-clés libres : Single tree detection marked point process segmentation Résumé : (auteur) Tree detection and reconstruction is of great interest in large-scale city modelling. In this paper, we present a marked point process model to detect single trees from airborne laser scanning (ALS) data. We consider single trees in ALS recovered canopy height model (CHM) as a realization of point process of circles. Unlike traditional marked point process, we sample the model in a constraint configuration space by making use of image process techniques. A Gibbs energy is defined on the model, containing a data term which judge the fitness of the model with respect to the data, and prior term which incorporate the prior knowledge of object layouts. We search the optimal configuration through a steepest gradient descent algorithm. The presented hybrid framework was test on three forest plots and experiments show the effectiveness of the proposed method. Numéro de notice : A2013-821 Affiliation des auteurs : LASTIG MATIS+Ext (2012-2019) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5194/isprsannals-II-3-W1-41-2013 Date de publication en ligne : 16/05/2013 En ligne : http://dx.doi.org/10.5194/isprsannals-II-3-W1-41-2013 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80995
in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences > vol II-3 W1 (May 2013) . - pp 41 - 46[article]Le statut social d’un arbre influence-t-il sa réponse au climat ? Étude dendroécologique sur le Sapin, l’Epicéa, le Pin sylvestre, le Hêtre et le Chêne sessile / Pierre Mérian in Revue forestière française, vol 65 n°1 (janvier - février 2013)PermalinkShifts in the height-related competitiveness of tree species following recent climate warming and implications for tree community composition: the case of common beech and sessile oak as predominant broadleaved species in Europe / Jean-Daniel Bontemps in Oikos, vol 121 n° 8 (August 2012)PermalinkPermalinkRelevés floristiques pour le suivi de la biodiversité végétale des écosystèmes forestiers : éléments de réflexion pour faire les bons choix / Richard Chevalier in Revue forestière française, vol 62 n° 2 (mars - avril 2010)PermalinkPreliminary study on the assessment of deadwood volume by the French national forest inventory / Rémi Teissier du Cros in Annals of Forest Science, Vol 66 n° 3 (April - May 2009)PermalinkRENECOFOR. Dix ans de suivi de la végétation forestière : aspects méthodologiques et évolution temporelle de la flore (1994/1995-2005) / Frédéric Archaux (2009)PermalinkSilver fir (abies alba mill.) in limiting ecological conditions / Jiri Sindelar in Communicationes Instituti Forestalis Bohemicae, vol 24 (2008)PermalinkEstimation of local forest attributes, utilizing two-phase sampling and auxiliary data / Sakari Tuominen (2007)PermalinkCorrections for cluster-plot slop / Harry T. Valentine in Forest science, vol 52 n° 1 (February 2006)PermalinkL'Inventaire forestier permanent du Grand-Duché de Luxembourg et ses aspects méthodologiques / Jacques Rondeux in Revue forestière française, vol 57 n° 1 (juin 2005)Permalink