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Coral habitat mapping: a comparison between maximum likelihood, Bayesian and Dempster–Shafer classifiers / Mohammad Shawkat Hossain in Geocarto international, vol 36 n° 11 ([01/07/2021])  

Public [article]  inGeocarto international > vol 36 n° 11 [01/07/2021] . - pp 1217 - 1235 Titre : Coral habitat mapping: a comparison between maximum likelihood, Bayesian and Dempster–Shafer classifiers Type de document : Article/Communication Auteurs : Mohammad Shawkat Hossain, Auteur ; Aidy M. Muslim, Auteur ; Muhammad Izuan Nadzri, Auteur ; et al., Auteur Année de publication : 2021 Article en page(s) : pp 1217 - 1235 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] carte thématique [Termes IGN] classification bayesienne [Termes IGN] classification de Dempster-Shafer [Termes IGN] classification par maximum de vraisemblance [Termes IGN] classification pixellaire [Termes IGN] fond marin [Termes IGN] Google Earth [Termes IGN] habitat d'espèce [Termes IGN] image Quickbird [Termes IGN] Malaisie [Termes IGN] précision infrapixellaire [Termes IGN] récif corallien Résumé : (auteur) This study deals with the mixed-pixel problem of detecting benthic habitat class membership and evaluates two soft classifiers for coral habitat mapping on Lang Tengah island (Malaysia). A comparison was made between the Bayesian and Dempster–Shafer (D–S) with a traditional maximum likelihood (ML). The heterogeneous pattern of reef environment, established by field observation, four classes of coral habitats containing various combinations of live coral, dead coral with algae, rubble coral and sand. Posterior probability and belief maps, generated by Bayesian and D–S, respectively, were evaluated by visual inspection and final coral habitat distribution maps were validated via accuracy assessment estimates. The accuracy validation tests agreed with the visual inspection of the probability, uncertainty and coral distribution maps. The Bayesian algorithm performed better, with a 34.7–68.5% improvement in accuracy compared to D–S and ML, respectively. Probability maps demonstrate the advantages of the soft classifier over the hard classifier for coral mapping. Numéro de notice : A2021-435 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2019.1637466 date de publication en ligne : 10/07/2019 En ligne : https://doi.org/10.1080/10106049.2019.1637466 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97803 [article]

Evaluating the impact of declining tsetse fly (Glossina pallidipes) habitat in the Zambezi valley of Zimbabwe / Farai Matawa in Geocarto international, vol 35 n° 12 ([01/09/2020])  

Public [article]  inGeocarto international > vol 35 n° 12 [01/09/2020] . - pp 1373 - 1384 Titre : Evaluating the impact of declining tsetse fly (Glossina pallidipes) habitat in the Zambezi valley of Zimbabwe Type de document : Article/Communication Auteurs : Farai Matawa, Auteur ; Amon Murwira, Auteur ; Peter M. Atkinson, Auteur Année de publication : 2020 Article en page(s) : pp 1373 - 1384 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes IGN] biodiversité [Termes IGN] bovin [Termes IGN] couvert végétal [Termes IGN] diptère [Termes IGN] distance [Termes IGN] distribution spatiale [Termes IGN] forêt tropicale [Termes IGN] habitat d'espèce [Termes IGN] maladie parasitaire [Termes IGN] Zambèze (fleuve) [Termes IGN] Zimbabwe Résumé : (auteur) Tsetse flies transmit trypanosomes that cause Human African Trypanosomiasis (HAT) in humans and African Animal Trypanosomiasis (AAT) in animals. Understanding historical trends in the spatial distribution of tsetse fly habitat is necessary for planning vector control measures. The objectives of this study were (i) to test for evidence of any trends in suitable tsetse fly habitat and (ii) to test whether there is an association between trypanosomiasis detected from livestock sampled in dip tanks and local tsetse habitat in the project area. Results indicate a significant decreasing trend in the amount of suitable habitat. There is no significant correlation between trypanosomiasis prevalence rates in cattle and distance from patches of suitable tsetse habitat. The observed low trypanosomiasis prevalence and the lack of dependence on suitable tsetse fly habitat can be explained by the observed decreases in suitable tsetse habitat, which themselves are due to expansion of settlement and agriculture in North Western Zimbabwe. Numéro de notice : A2020-486 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2019.1576780 date de publication en ligne : 21/03/2019 En ligne : https://doi.org/10.1080/10106049.2019.1576780 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95653 [article]

Biodiversity conservation in cities: Defining habitat analogues for plant species of conservation interest / M. Itani in Plos one, vol 15 n° 6 (June 2020)  

Public [article]  inPlos one > vol 15 n° 6 (June 2020) . - n° 0220355 Titre : Biodiversity conservation in cities: Defining habitat analogues for plant species of conservation interest Type de document : Article/Communication Auteurs : M. Itani, Auteur Année de publication : 2020 Article en page(s) : n° 0220355 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Ecologie [Termes IGN] Beyrouth [Termes IGN] conservation de la flore [Termes IGN] espèce exotique envahissante [Termes IGN] habitat (nature) [Termes IGN] habitat d'espèce [Termes IGN] Matthiola (genre) [Termes IGN] TWINSPAN Résumé : (auteur) Urban green spaces, both unmanaged and managed, include novel ecosystems that may be suitable habitat analogues for native plant species of conservation interest. The objective of this study was to define habitat analogues in the Mediterranean city of Beirut for Matthiola crassifolia, a Lebanese steno-endemic only present in urban habitats. We adopted a stepwise method that integrates two vegetation assessments, floristics, and life form. We placed seventy-eight quadrats (1m x 1m) in 12 study sites following a deliberate biased approach to capture habitat diversity. In every quadrat, we performed taxonomic identification and recorded life forms of each species. We pooled species that shared the same life form and estimated area cover for each life form accordingly. We performed TWINSPAN analyses on both floristic and life form data, then combined these findings to generate a description of habitat analogues suitable for M. crassifolia. TWINSPAN analysis of floristic data clustered the 78 quadrats under 17 quadrat groups, while life form data assembled the quadrats under 11 quadrat groups. The integration of floristic and life-form classification results into one matrix generated 30 quadrat groups, 8, which were highly favorable to M. crassifolia, and 12, which excluded it. The stepwise method unveiled similarities between vegetation assemblages, which appeared distinct due to the high presence of ruderals. We found that habitat analogues favorable to M. crassifolia include green spaces dominated by palms, low-lying succulents, or shrubs with scale-like leaves. In contrast, areas dominated by turf grass, canopy trees, or vegetation that produces significant litter were not favorable to M. crassifolia’s persistence. Based on these findings, we generated a plant palette of life forms which guides designs of urban habitats favorable to M. crassifolia. Numéro de notice : A2020-831 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : 10.1371/journal.pone.0220355 date de publication en ligne : 09/06/2020 En ligne : https://doi.org/10.1371/journal.pone.0220355 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97664 [article]

Development of habitation maps for allergenic plants in Europe / Juliette Delannoy (2017) 

Public Titre : Development of habitation maps for allergenic plants in Europe Type de document : Mémoire Auteurs : Juliette Delannoy, Auteur Editeur : Champs-sur-Marne : Ecole nationale des sciences géographiques ENSG Année de publication : 2017 Importance : 42 p. Format : 21 x 30 cm Note générale : Bibliographie Rapport de projet pluridisciplinaire, cycle Ingénieur 2e année Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Ecologie [Termes IGN] carte de la végétation [Termes IGN] diagramme [Termes IGN] format GeoTIFF [Termes IGN] habitat d'espèce [Termes IGN] pédologie locale [Termes IGN] Python (langage de programmation) [Termes IGN] QGIS [Termes IGN] surveillance sanitaire Index. décimale : PROJET Mémoires : Rapports de projet - stage des ingénieurs de 2e année Résumé : (Auteur) Le rapport présenté par la suite concerne la création de cartes d’habitation d’espèces allergènes en Europe. Mon travail s’est basé sur des cartes et inventaires déjà existants concernant l’occupation des sols et la présence d’espèce ainsi que sur des connaissances météorologiques. Premièrement, la création de diagrammes a permis l’étude d’après les données existantes de la répartition des espèces allergènes en fonction du type de sol et de la zone géographique. Cela a ensuite permis de déterminer le coefficient de présence moyenne d’une espèce dans un certain lieu géographique et biophysique. Ces coefficients sont ensuite utilisés pour l’élaboration de cartes d’habitation pour différentes espèces allergènes. L’objectif générale est donc la création des cartes, avec pour difficulté principale la détermination des coefficients représentant la présence de l’espèce. L’ensemble du processus se divise en deux grandes parties : l’obtention de diagrammes aidant à déterminer les coefficients de présence moyenne dans une certaine zone et l’obtention de cartes dans le monde entier s’appuyant sur les coefficients donnés par l’opérateur, issus de la première partie du processus. L’ensemble du projet a été mené avec le logiciel de programmation Python et avec le logiciel de système d’information géographique libre QGIS. Les formats principalement utilisés sont Geotiff et Netcdf. Note de contenu : Introduction 1. Selection of the data sets 1.1 Allergenic species 1.2 Type of inventories 1.3 Data sets used for the study 2. Grids for studying the maps 2.1 Choice of zones 2.2 Link between presence of species and type of land 3. Determination of the presence of species according to the type of land 3.1 Statistics of the distribution of the species among each type of land 3.2 Getting coefficients from histograms 4. Getting map of species from coefficients 4.1 Creating map of Europe thanks to coefficients 4.2 Examining the results 4.3 Applying to other geographical zones Conclusion Numéro de notice : 22804 Affiliation des auteurs : non IGN Thématique : FORET/GEOMATIQUE Nature : Mémoire de projet pluridisciplinaire Organisme de stage : Finnish Meteorological Institute FMI Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=87852

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Dynamics of fungal community composition, decomposition and resulting deadwood properties in logs of Fagus sylvatica, Picea abies and Pinus sylvestris / Tobias Arnstadt in Forest ecology and management, vol 382 (15 December 2016)  

Public [article]  inForest ecology and management > vol 382 (15 December 2016) . - pp 129 - 142 Titre : Dynamics of fungal community composition, decomposition and resulting deadwood properties in logs of Fagus sylvatica, Picea abies and Pinus sylvestris Type de document : Article/Communication Auteurs : Tobias Arnstadt, Auteur ; Björn Hoppe, Auteur ; Harald Kellner, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 129 - 142 Langues : Anglais (eng) Descripteur : [Termes IGN] Allemagne [Termes IGN] bois mort [Termes IGN] Fagus sylvatica [Termes IGN] Fungi [Termes IGN] habitat d'espèce [Termes IGN] habitat forestier [Termes IGN] lignine [Termes IGN] Picea abies [Termes IGN] Pinus sylvestris [Termes IGN] richesse floristique [Vedettes matières IGN] Ecologie forestière Résumé : (auteur) In forest ecosystems, deadwood is an important component that provides habitat and contributes to nutrient cycles, as well as to carbon and water storage. The change of wood constituents, nutrients and microbial species richness in the field over the whole time of decomposition has only rarely been studied, in particular not in relation to oxidative enzyme activities (mediating lignin degradation) and different forest management regimes. To describe wood decomposition, we selected coarse woody debris (CWD) in form of 197 logs of Fagus sylvatica, Picea abies and Pinus sylvestris in forests with different management regimes across three regions in Germany. They were sampled and analyzed for wood density, water content, wood constituents (Klason and acid-soluble lignin, organic extractives, water-soluble lignin fragments), carbon, nitrogen and metals (Al, Ca, Cu, K, Mg, Mn and Zn). Furthermore, the activities of oxidative enzymes like laccase, manganese peroxidase, and general peroxidase were measured. Since filamentous fungi (Basidiomycota, Ascomycota) are the major biological agents of wood decomposition, fungal species richness based on sporocarps and molecular fingerprints was recorded. Higher forest management intensity had a negative effect on deadwood volume and in consequence on fungal species richness (sporocarps), but hardly to other analyzed variables. Furthermore, there were significant differences between the tree species for the concentrations of wood constituents and most nutrients as well as the activities of oxidative enzymes, although their course during decomposition was mostly similar among the tree species. We found that molecular species richness increased with the period of decomposition in contrast to the number of fruiting species, which was highest in the intermediate stage of decomposition. Both types of species richness increased with increasing volume of the CWD logs. Regarding the entire period of decomposition, white-rot fungi (WRF), based on identification of sporocarps, were the most abundant group of wood-decaying fungi in all three tree species. This corresponds well with the overall presence of laccase and peroxidases and the concomitant substantial loss of lignin, which points to the importance of these enzymes in deadwood decomposition. We found a continuous decomposition and decline of volume-related concentrations in wood constituents and nutrients with time of decomposition. Contrary to volume-related concentrations, the concentrations related to dry mass frequently increased. Numéro de notice : A2016-765 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article En ligne : http://dx.doi.org/10.1016/j.foreco.2016.10.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82401 [article]

Habitat change on Horn Island, Mississippi, 1940-2010, determined from textural features in panchromatic vertical aerial imagery / Guy W. Jeter Jr in Geocarto international, Vol 31 n° 9 - 10 (October - November 2016)  

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Technology in focus: bathymetric lidar / Anonyme in GIM international [en ligne], vol 30 n° 10 (October 2016)

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Incorporating movement in species distribution models: how do simulations of dispersal affect the accuracy and uncertainty of projections? / Paul Holloway in International journal of geographical information science IJGIS, vol 30 n° 9-10 (September - October 2016)  

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Unsupervised classification of airborne laser scanning data to locate potential wildlife habitats for forest management planning / Jari Vauhkonen in Forestry, an international journal of forest research, vol 89 n° 4 (August 2016)  

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Effects of landscape design of forest reserves on Saproxylic beetle diversity / Christophe Bouget in Conservation biology, vol 30 n° 1 (February 2016)  

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État de conservation des habitats : propositions de définitions et de concepts pour l’évaluation à l’échelle d’un site Natura 2000 / Lise Maciejewski in Revue d'écologie, vol 71 n° 1 (janvier - mars 2016) 

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Spatial analysis of heath toponymy in relation to present-day heathland distribution / Jaime Fagundez in International journal of geographical information science IJGIS, vol 30 n° 1-2 (January - February 2016)  

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Wide-area mapping of small-scale features in agricultural landscapes using airborne remote sensing / Jerome O’Connell in ISPRS Journal of photogrammetry and remote sensing, vol 109 (November 2015)  

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Automatisation des cartes d’incidences Natura 2000 sur le Massif de Fontainebleau / Yann Petit (2015) 

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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)  

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