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Impacts of species misidentification on species distribution modeling with presence-only data / Hugo Costa in ISPRS International journal of geo-information, vol 4 n°4 (December 2015)
[article]
Titre : Impacts of species misidentification on species distribution modeling with presence-only data Type de document : Article/Communication Auteurs : Hugo Costa, Auteur ; Giles M. Foody, Auteur ; Silvia Jiménez, Auteur ; Luis Silva, Auteur Année de publication : 2015 Article en page(s) : pp 2496 - 2518 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatiale
[Termes IGN] distribution spatiale
[Termes IGN] entropie maximale
[Termes IGN] erreur d'approximation
[Termes IGN] identification automatique
[Termes IGN] modèle de simulation
[Termes IGN] propagation d'erreurRésumé : (auteur) Spatial records of species are commonly misidentified, which can change the predicted distribution of a species obtained from a species distribution model (SDM). Experiments were undertaken to predict the distribution of real and simulated species using MaxEnt and presence-only data “contaminated” with varying rates of misidentification error. Additionally, the difference between the niche of the target and contaminating species was varied. The results show that species misidentification errors may act to contract or expand the predicted distribution of a species while shifting the predicted distribution towards that of the contaminating species. Furthermore the magnitude of the effects was positively related to the ecological distance between the species’ niches and the size of the error rates. Critically, the magnitude of the effects was substantial even when using small error rates, smaller than common average rates reported in the literature, which may go unnoticed while using a standard evaluation method, such as the area under the receiver operating characteristic curve. Finally, the effects outlined were shown to impact negatively on practical applications that use SDMs to identify priority areas, commonly selected for various purposes such as management. The results highlight that species misidentification should not be neglected in species distribution modeling. Numéro de notice : A2015--004 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/GEOMATIQUE Nature : Article DOI : 10.3390/ijgi4042496 Date de publication en ligne : 16/11/2015 En ligne : https://doi.org/10.3390/ijgi4042496 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101798
in ISPRS International journal of geo-information > vol 4 n°4 (December 2015) . - pp 2496 - 2518[article]A review of forest and tree plantation biomass equations in Indonesia / Kamalakumari Anitha in Annals of Forest Science, vol 72 n° 8 (December 2015)
[article]
Titre : A review of forest and tree plantation biomass equations in Indonesia Type de document : Article/Communication Auteurs : Kamalakumari Anitha, Auteur ; Louis V. Verchot, Auteur ; Shijo Joseph, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 981 - 997 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] allométrie
[Termes IGN] biomasse forestière
[Termes IGN] distribution spatiale
[Termes IGN] équation
[Termes IGN] Indonésie
[Termes IGN] troncRésumé : (auteur) Key message: We compiled 2,458 biomass equations from 168 destructive sampling studies in Indonesia. Unpublished academic theses contributed the largest share of the biomass equations. The availability of the biomass equations was skewed to certain regions, forest types, and species. Further research is necessary to fill the data gaps in emission factors and to enhance the implementation of climate change mitigation projects and programs.
Context: Locally derived allometric equations contribute to reducing the uncertainty in the estimation of biomass, which may be useful in the implementation of climate change mitigation projects and programs in the forestry sector. Many regional and global efforts are underway to compile allometric equations.
Aims: The present study compiles the available allometric equations in Indonesia and evaluates their adequacy in estimating biomass in the different types of forest across the archipelago.
Methods: A systematic survey of the scientific literature was conducted to compile the biomass equations, including ISI publications, national journals, conference proceedings, scientific reports, and academic theses. The data collected were overlaid on a land use/land cover map to assess the spatial distribution with respect to different regions and land cover types. The validation of the equations for selected forest types was carried out using independent destructive sampling data.
Results: A total of 2,458 biomass equations from 168 destructive sampling studies were compiled. Unpublished academic theses contributed the majority of the biomass equations. Twenty-one habitat types and 65 species were studied in detail. Diameter was the most widely used single predictor in all allometric equations. The cumulative number of individual trees cut was 5,207. The islands of Java, Kalimantan, and Sumatra were the most studied, while other regions were underexplored or unexplored. More than half of the biomass equations were for just seven species. The majority of the studies were carried out in plantation forests and secondary forests, while primary forests remain largely understudied. Validation using independent data showed that the allometric models for peat swamp forest had lower error departure, while the models for lowland dipterocarp forest had higher error departure.
Conclusion: Although biomass studies are a major research activity in Indonesia due to its high forest cover, the majority of such activities are limited to certain regions, forest types, and species. More research is required to cover underrepresented regions, forest types, particular growth forms, and very large tree diameter classes.Numéro de notice : A2015-895 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.1007/s13595-015-0507-4 Date de publication en ligne : 12/10/2015 En ligne : https://doi.org/10.1007/s13595-015-0507-4 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79448
in Annals of Forest Science > vol 72 n° 8 (December 2015) . - pp 981 - 997[article]Impact of the North Atlantic oscillation on Southern Europe water distribution: insights from geodetic data / Pierre Valty in Earth Interactions, vol 19 n° 10 (September 2015)
[article]
Titre : Impact of the North Atlantic oscillation on Southern Europe water distribution: insights from geodetic data Type de document : Article/Communication Auteurs : Pierre Valty , Auteur ; Olivier de Viron, Auteur ; Isabelle Panet , Auteur ; Xavier Collilieux , Auteur Année de publication : 2015 Article en page(s) : pp 1 - 16 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] analyse en composantes principales
[Termes IGN] Atlantique Nord
[Termes IGN] distribution spatiale
[Termes IGN] Europe du sud
[Termes IGN] masse d'eau
[Termes IGN] Noire, mer
[Termes IGN] oscillationRésumé : (auteur) From space gravity and station position data over southern Europe from 2002 to 2010, this study investigates the interannual mass redistributions using principal component analysis. The dominant mode, which appears both in gravity and positioning, results from the North Atlantic Oscillation (NAO). This analysis allows us to isolate and characterize the NAO impact on the mass distribution, which appears centered over the Black Sea and its two main catchment basins, the Danube and Dnieper. Numéro de notice : A2015--072 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1175/EI-D-14-0028.1 Date de publication en ligne : 16/09/2015 En ligne : http://dx.doi.org/10.1175/EI-D-14-0028.1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83241
in Earth Interactions > vol 19 n° 10 (September 2015) . - pp 1 - 16[article]Documents numériques
en open access
Impact of the North Atlantic oscillation ... - pdf éditeurAdobe Acrobat PDF
[article]
Titre : Mapping a future for Kenya’s Amboseli elephants Type de document : Article/Communication Auteurs : Mark Sowers, Auteur Année de publication : 2015 Article en page(s) : pp 20 - 21 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] distribution spatiale
[Termes IGN] Kenya
[Termes IGN] Mammalia
[Termes IGN] parc naturel national
[Termes IGN] positionnement par GPSRésumé : (documentaliste) Le suivi des éléphants dans le parc national Amboseli du Kenya existe depuis plusieurs années et permet de connaître leurs parcours et leur répartition géographique. Le suivi par GPS permet de mieux comprendre leurs habitudes. Numéro de notice : A2015-531 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77718
in ArcNews > vol 37 n° 2 (Summer 2015) . - pp 20 - 21[article]Documents numériques
en open access
Mapping a future for Kenya’s Amboseli elephantsAdobe Acrobat PDF Analytical estimation of map readability / Lars Harrie in ISPRS International journal of geo-information, vol 4 n°2 (June 2015)
[article]
Titre : Analytical estimation of map readability Type de document : Article/Communication Auteurs : Lars Harrie, Auteur ; Hanna Stigmar, Auteur ; Milan Djordjevic, Auteur Année de publication : 2015 Article en page(s) : pp 418 - 446 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] apprentissage dirigé
[Termes IGN] distribution spatiale
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] lisibilité perceptive
[Termes IGN] régression multiple
[Termes IGN] séparateur à vaste marge
[Termes IGN] seuillage
[Termes IGN] test de performance
[Termes IGN] utilisateur
[Vedettes matières IGN] CartologieRésumé : (auteur) Readability is a major issue with all maps. In this study, we evaluated whether we can predict map readability using analytical measures, both single measures and composites of measures. A user test was conducted regarding the perceived readability of a number of test map samples. Evaluations were then performed to determine how well single measures and composites of measures could describe the map readability. The evaluation of single measures showed that the amount of information was most important, followed by the spatial distribution of information. The measures of object complexity and graphical resolution were not useful for explaining the map readability of our test data. The evaluations of composites of measures included three methods: threshold evaluation, multiple linear regression and support vector machine. We found that the use of composites of measures was better for describing map readability than single measures, but we could not identify any major differences in the results of the three composite methods. The results of this study can be used to recommend readability measures for triggering and controlling the map generalization process of online maps. Numéro de notice : A2015-701 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/ijgi4020418 En ligne : https://doi.org/10.3390/ijgi4020418 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78343
in ISPRS International journal of geo-information > vol 4 n°2 (June 2015) . - pp 418 - 446[article]An improved species distribution model for Scots pine and downy oak under future climate change in the NW Italian Alps / Giorgio Vacchiano in Annals of Forest Science, vol 72 n° 3 (May 2015)PermalinkMapping the value of ecosystem services: A case study from the Austrian Alps / Alessandro Paletto in Annals of forest research, vol 58 n° 1 (January 2015)PermalinkTropical forest structure characterization using airborne lidar data: an individual tree level approach / António Ferraz (dec 2015)PermalinkPermalinkDistribution, données floristiques et architecture des boisements du delta du Rhône (sud-est de la France) / Annik Schnitzler in Ecologia mediterranea, vol 40 n° 2 (2014)PermalinkVisual discovery of synchronisation in weather data at multiple temporal resolutions / Xiaojing Wu in Cartographic journal (the), vol 50 n° 3 (August 2013)PermalinkUnderstorey plant species show long‐range spatial patterns in forest patches according to distance‐to‐edge / Vincent Pellissier in Journal of vegetation science, vol 24 n° 1 (January 2013)PermalinkFrom signs to minds : Spatial information design and mental maps / M. Skiles in Cartographic journal (the), vol 49 n° 4 (November 2012)PermalinkUsing thermal remote sensing in environmental studies / M. Kubiak in Transactions in GIS, vol 16 n° 5 (October 2012)PermalinkLong term land cover and seagrass mapping using Landsat and object-based image analysis from 1972 to 2010 in the coastal environment of South East Queensland, Australia / M. Lyons in ISPRS Journal of photogrammetry and remote sensing, vol 71 (July 2012)Permalink