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Uncertainties in measurements of leaf optical properties are small compared to the biological variation within and between individuals of European beech / Fanny Petibon in Remote sensing of environment, vol 264 (October 2021)  

Public [article]  inRemote sensing of environment > vol 264 (October 2021) . - n° 112601 Titre : Uncertainties in measurements of leaf optical properties are small compared to the biological variation within and between individuals of European beech Type de document : Article/Communication Auteurs : Fanny Petibon, Auteur ; Ewa A. Czyż, Auteur ; Giulia Ghielmetti, Auteur ; et al., Auteur Année de publication : 2021 Article en page(s) : n° 112601 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] anisotropie [Termes IGN] diagnostic foliaire [Termes IGN] échantillonnage [Termes IGN] Fagus sylvatica [Termes IGN] feuille (végétation) [Termes IGN] France (administrative) [Termes IGN] incertitude spectrale [Termes IGN] indicateur biologique [Termes IGN] phénologie [Termes IGN] réflectance spectrale [Termes IGN] réflectance végétale [Termes IGN] saison [Termes IGN] spectroradiomètre [Termes IGN] Suisse Résumé : (auteur) The measurement of leaf optical properties (LOP) using reflectance and scattering properties of light allows a continuous, time-resolved, and rapid characterization of many species traits including water status, chemical composition, and leaf structure. Variation in trait values expressed by individuals result from a combination of biological and environmental variations. Such species trait variations are increasingly recognized as drivers and responses of biodiversity and ecosystem properties. However, little has been done to comprehensively characterize or monitor such variation using leaf reflectance, where emphasis is more often on species average values. Furthermore, although a variety of platforms and protocols exist for the estimation of leaf reflectance, there is neither a standard method, nor a best practise of treating measurement uncertainty which has yet been collectively adopted. In this study, we investigate what level of uncertainty can be accepted when measuring leaf reflectance while ensuring the detection of species trait variation at several levels: within individuals, over time, between individuals, and between populations. As a study species, we use an economically and ecologically important dominant European tree species, namely Fagus sylvatica. We first use fabrics as standard material to quantify measurement uncertainties associated with leaf clip (0.0001 to 0.4 reflectance units) and integrating sphere measurements (0.0001 to 0.01 reflectance units) via error propagation. We then quantify spectrally resolved variation in reflectance from F. sylvatica leaves. We show that the measurement uncertainty associated with leaf reflectance, estimated using a field spectroradiometer with attached leaf clip, represents on average a small portion of the spectral variation within a single individual sampled over one growing season (2.7 ± 1.7%), or between individuals sampled over one week (1.5 ± 1.3% or 3.4 ± 1.7%, respectively) in a set of monitored F. sylvatica trees located in Swiss and French forests. In all forests, the spectral variation between individuals exceeded the spectral variation of a single individual at the time of the measurement. However, measurements of variation within individuals at different canopy positions over time indicate that sampling design (e.g., standardized sampling, and sample size) strongly impacts our ability to measure between-individual variation. We suggest best practice approaches toward a standardized protocol to allow for rigorous quantification of species trait variation using leaf reflectance. Numéro de notice : A2021-808 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.1016/j.rse.2021.112601 Date de publication en ligne : 29/07/2021 En ligne : https://doi.org/10.1016/j.rse.2021.112601 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=98868 [article]

An automated and optimized approach for online spatial biodiversity model: a case study of OGC web processing service / Hariom Singh in Geocarto international, vol 34 n° 2 ([01/02/2019])  

Public [article]  inGeocarto international > vol 34 n° 2 [01/02/2019] . - pp 194 - 214 Titre : An automated and optimized approach for online spatial biodiversity model: a case study of OGC web processing service Type de document : Article/Communication Auteurs : Hariom Singh, Auteur ; Harish Chandra Karnatak, Auteur ; Rahul Dev Garg, Auteur Année de publication : 2019 Article en page(s) : pp 194 - 214 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] analyse de sensibilité [Termes IGN] biodiversité [Termes IGN] données localisées [Termes IGN] indicateur biologique [Termes IGN] indicateur de biodiversité [Termes IGN] interface web [Termes IGN] modèle conceptuel de données localisées [Termes IGN] processus de hiérarchisation analytique floue [Termes IGN] service web géographique [Termes IGN] SIG participatif [Termes IGN] traitement parallèle [Termes IGN] Uttarakhand (Inde ; état) [Termes IGN] Web Processing Service Résumé : (auteur) An online spatial biodiversity model (SBM) for optimized and automated spatial modelling and analysis of geospatial data is proposed, which is based on web processing service (WPS) and web service orchestration (WSO) in parallel computing environment. The developed model integrates distributed geospatial data in geoscientific processing workflow to compute the algorithms of spatial landscape indices over the web using free and open source software. A case study for Uttarakhand state of India demonstrates the model outputs such as spatial biodiversity disturbance index (SBDI) and spatial biological richness index (SBRI). In order to optimize and automate, an interactive web interface is developed using participatory GIS approaches for implementing fuzzy AHP. In addition, sensitivity analysis and geosimulation experiments are also performed under distributed GIS environment. Results suggest that parallel algorithms in SBM execute faster than sequential algorithms and validation of SBRI with biological diversity shows significant correlation by indicating high R2 values. Numéro de notice : A2019-222 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2017.1381178 Date de publication en ligne : 06/10/2017 En ligne : https://doi.org/10.1080/10106049.2017.1381178 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92742 [article]

Changement climatique et toponymie : Écologie historique du houx et du buis à travers leurs traces toponymiques / Emilien Conte (2018) 

Public Titre : Changement climatique et toponymie : Écologie historique du houx et du buis à travers leurs traces toponymiques Type de document : Mémoire Auteurs : Emilien Conte, Auteur Editeur : Paris : Université de Paris 1 Panthéon Sorbonne Année de publication : 2018 Autre Editeur : Paris : Université de Paris 7 Denis Diderot Importance : 49 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Toponymie [Termes IGN] aire de répartition [Termes IGN] analyse diachronique [Termes IGN] Buxus sempervirens [Termes IGN] changement climatique [Termes IGN] France (administrative) [Termes IGN] ilex aquifolium [Termes IGN] indicateur biologique Index. décimale : DCAR Mémoires de l'ex DESS cartographie et du Master CARTHAGEO Résumé : (auteur) Les toponymes sont, entre autres choses, une expression du lien entre les sociétés et leur environnement. Les noms de lieux qui désignent des espèces végétales peuvent être vus comme une trace de la présence passée de ces espèces. La géographie des toponymes, lorsqu’elle est comparée aux données environnementales présentes, nous renseigne sur l’évolution de l’environnement. En explorant la toponymie du houx (Ilex aquifolium) et du buis (Buxus sempervirens) en France et en les confrontant aux conditions actuelles, nous avons pu observer les dynamiques historiques de ces deux espèces à une large échelle. L’expansion de l’aire de répartition du houx en France en lien avec l’augmentation générale de la température a pu être constatée et le caractère bioindicateur de l’arbuste a été confirmé. L’étude des toponymes du buis a montré que la géographie de cette espèce doit, en dehors de sa zone d’extension continue, être analyser en lien avec le rôle majeur des sociétés humaines et la complexité de son maintien malgré la glaciation a également été rendu visible. // Toponyms are, among other things, an expression of the link between societies and their environment. Place names that designate plant species can be seen as a record of the past range of these species. The geography of toponyms, when compared with current environmental data, gives us insights on the evolution of the environment. By exploring the toponymy of holly (Ilex aquifolium) and box-tree (Buxus sempervirens) in France and comparing them to current conditions, we have been able to observe the historical dynamics of these two species on a large scale. The expansion of the holly's range in France in connection with the general increase of temperature was noted and the bioindicator capacity of this shrub was confirmed. The study of box-tree toponyms has shown that the geography of this species must be analyzed outside its continuous extension area in relation to the major role of human societies. Finally, the complexity of its upkeep during glacial period has also been seen. Numéro de notice : 17538 Affiliation des auteurs : non IGN Thématique : FORET/GEOMATIQUE/TOPONYMIE Nature : Mémoire master cartographie Organisme de stage : IGN Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91183

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Focal plant species and soil factors in Mediterranean coastal dunes: An undisclosed liaison? / Claudia Angiolini in Estuarine, Coastal and Shelf Science, vol inconnu ([08/06/2017])  

Public [article]  inEstuarine, Coastal and Shelf Science > vol inconnu [08/06/2017] . - pp 248 - 258 Titre : Focal plant species and soil factors in Mediterranean coastal dunes: An undisclosed liaison? Type de document : Article/Communication Auteurs : Claudia Angiolini, Auteur ; Gianmaria Bonari, Auteur ; Marco Landi, Auteur Année de publication : 2017 Article en page(s) : pp 248 - 258 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse canonique [Termes IGN] dune [Termes IGN] facteur édaphique [Termes IGN] indicateur biologique [Termes IGN] littoral méditerranéen [Termes IGN] microhabitat [Termes IGN] pédologie locale [Termes IGN] placette d'échantillonnage [Termes IGN] Toscane (Italie) [Vedettes matières IGN] Ecologie forestière Résumé : (auteur) Understanding the response of plant species to soil factors on coastal sand dunes is critical for effective conservation of coastal habitats in the Mediterranean basin. Our main objectives were to investigate: i) the main soil factors driving species composition in a Mediterranean coastal dune environment; ii) the ecological requirements of focal plant species with respect to single soil factors; iii) whether the focal species of a given macrohabitat (including EU habitats) have similar edaphic needs. We identified 108 plots with three macrohabitats as strata (embryo dunes; mobile dunes; fixed dunes) by random stratified sampling design along the Tyrrhenian coast of central Italy in areas with a high degree of biodiversity and naturalness. Vegetation and soil data were collected in the plots. Canonical Correspondence Analysis (CCA) confirmed that soil had a main role in driving focal dune species composition as found in other Mediterranean areas and indicated that three factors (field capacity, pH and CaCO3) sufficiently explain patterns of plant species. An inverse relation between field capacity, which proves to be the most decisive feature for differences in species ecological requirements between macrohabitats, and pH was observed. Generalized Additive Models (GAMs) showed that: i) the focal species of fixed dunes have a higher probability of occurrence and response curves that overlap at high field capacity and TOC values and at low pH, showing an opposite trend with respect to the species of embryonic and mixed dunes; ii) species of mixed dunes have a probability of occurrence linked to different values of CaCO3, with Ammophila arenaria showing its optimum at high CaCO3 values. Thus our results sustain the hypothesis that dune focal species, diagnostic and characteristic of coastal dune marcohabitats, have different ecological responses with respect to soil factors. Moreover, species within the same habitat can have different ecological responses due to species competition. Data about edaphic requirements of sand dune species and modelling of their ecological responses suggests that focal dune species can be bio-indicators of soil conditions and provide useful indications for conservation, monitoring and restoration of Mediterranean coastal habitats. Numéro de notice : A2017-249 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : 10.1016/j.ecss.2017.06.001 Date de publication en ligne : 08/06/2017 En ligne : https://doi.org/10.1016/j.ecss.2017.06.001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85209 [article]

Optimizing the bioindication of forest soil acidity, nitrogen and mineral nutrition using plant species / Paulina E. Pinto in Ecological indicators, vol 71 (December 2016)  

Public [article]  inEcological indicators > vol 71 (December 2016) . - pp 359 - 367 Titre : Optimizing the bioindication of forest soil acidity, nitrogen and mineral nutrition using plant species Type de document : Article/Communication Auteurs : Paulina E. Pinto, Auteur ; Jean-Luc Dupouey, Auteur ; Jean-Christophe Hervé (1961-2017) , Auteur ; Myriam Legay, Auteur ; Stéphanie Wurpillot , Auteur ; Pierre Montpied, Auteur ; Jean-Claude Gégout, Auteur Année de publication : 2016 Projets : ARBRE / AgroParisTech Article en page(s) : pp 359 - 367 Note générale : bibliographie This study was supported by the French National Institute for Agricultural Research (Forest Grassland and Freshwater Ecology Department, EFPA) through the ONF-INRA Interface Grant, “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] base de données forestières [Termes IGN] fertilité [Termes IGN] humidité du sol [Termes IGN] indicateur biologique [Termes IGN] inventaire de la végétation [Termes IGN] placette d'échantillonnage [Termes IGN] qualité du sol [Termes IGN] sol acide [Termes IGN] teneur en azote [Vedettes matières IGN] Inventaire forestier Résumé : (auteur) Soil moisture and nutritional characteristics are frequently assessed using plant species and community bioindication, e.g., the Ellenberg system of species indicator values. This method, based on complete inventories of plant species present in plots, is time-consuming, which could prevent its general use for forest or other natural land management. Our aim was to determine the impact of a reduction in the time spent to carry out a floristic inventory on the quality of soil characteristic assessment using plant bioindication. We compared the measurements of soil pH-H2O (pH), organic carbon to total nitrogen ratio (C:N) and base saturation (BS) in the 0–5 cm soil layer of 470 plots with the same variables estimated from floristic inventories of increasing duration, using plant indicator values (IV) from the EcoPlant database. The performance of predictions was evaluated by the square of the linear correlation coefficient between measured and predicted values (R2) and the root mean square error (RMSE) of predictions. The number rather than the percentage of total plot species used for the estimations was determinant for the prediction of soil pH quality. Performance of bioindication of pH, BS and C:N reached the maximum R2 using the first 20–25 species recorded per plot, corresponding to a 14-min-long floristic inventory in comparison to a mean of 28 min spent to carry out a complete floristic inventory. A precision of prediction of 80% of the maximal precision was obtained after 4–5 min (6–12 inventoried species) for the three studied variables. These results are independent of the nutritional capability of the soils and were similar at the national and local scales. In order to estimate soil nutritional resources by plant bioindication, it is feasible to significantly reduce the time spent on floristic inventories and, thus, their cost. This is especially useful when the goal is to map the soil quality for decision-making in forest management. Numéro de notice : A2016--084 Affiliation des auteurs : LIF+Ext (2012-2019) Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.ecolind.2016.05.047 Date de publication en ligne : 25/07/2016 En ligne : http://doi.org/10.1016/j.ecolind.2016.05.047 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84562 [article]

Entre logique de production et de préservation : l’évolution de l’information environnementale dans les domaines de l’eau et de la forêt / Gabrielle Bouleau in VertigO, vol 16 n° 2 (Septembre 2016)  

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Combined effects of area, connectivity, history and structural heterogeneity of woodlands on the species richness of hoverflies (Diptera: Syrphidae) / Pierre-Alexis Herrault in Landscape ecology, vol 31 n° 4 (May 2016)

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A meta-analysis of functional group responses to forest recovery outside of the tropics / Rebecca Spake in Conservation biology, vol 29 n° 6 (December 2015)  

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FORESTIMATOR : un plugin QGIS d'estimation de la hauteur dominante et du site index de peuplements résineux à partir de Lidar aérien / Laurent Dedry in Revue Française de Photogrammétrie et de Télédétection, n° 211 - 212 (juillet - décembre 2015)  

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Ecologie du hêtre (Fagus sylvatica L) en marge sud-ouest de son aire de distribution / Daniel E. Silva (2010) 

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L'indice de biodiversité potentielle ou IBP : un outil pratique au service de la biodiversité ordinaire des forêts / Laurent Larrieu ; Pierre Gonin in Forêt entreprise, n° 190 (janvier 2010/1)

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Expertise écologique d’un peuplement forestier : étude de la complémentarité de deux indicateurs de biodiversité / Mathilde Redon in Revue forestière française, vol 61 n° 6 (novembre - décembre 2009)  

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Les biofilms aquatiques : dans quelle mesure permettent-ils de comprendre l'effet des pesticides sur le fonctionnement des cours d'eau ? Exemple en zone de vignoble / Stéphane Pesce ; Ahmed Tlili ; Bernard Montuelle in Ingénieries : eau, agriculture, territoires, n° 55-56 (2008)

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Pour une amélioration des indicateurs et suivis de biodiversité forestière / Frédéric Gosselin ; Marion Gosselin in Ingénieries : eau, agriculture, territoires, n° 55-56 (2008)

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Réchauffement climatique in Le Forestier privé en Rhône-Alpes, n° 36 (avril 2009)

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