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Analyzing animal movement characteristics from location data / Dipto Sarkar in Transactions in GIS, vol 19 n° 4 (August 2015)
[article]
Titre : Analyzing animal movement characteristics from location data Type de document : Article/Communication Auteurs : Dipto Sarkar, Auteur ; Colin A. Chapman, Auteur ; Larry Griffin, Auteur ; Raja Sengupta, Auteur Année de publication : 2015 Article en page(s) : pp 516 – 534 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatio-temporelle
[Termes IGN] Aves
[Termes IGN] habitat animal
[Termes IGN] migration animale
[Termes IGN] système d'information géographiqueRésumé : (auteur) When individuals of a species utilize an environment, they generate movement patterns at a variety of spatial and temporal scales. Field observations coupled with location technologies (e.g. GPS tags) enable the capture of detailed spatio-temporal data regarding these movement patterns. These patterns contain information about species-specific preferences regarding individual decision-making, locational choices and the characteristics of the habitat in which the animal resides. Spatial Data Mining approaches can be used to extract repeated spatio-temporal patterns and additional habitat preferences hidden within large spatially explicit movement datasets. We describe a method to determine the periodicity and directionality in movement exhibited by a migratory bird species. Results using a High Arctic-nesting Svalbard Barnacle Goose movement data yielded undetected patterns that were secondarily corroborated with expert field knowledge. Individual revisits by the geese to specific locations in the breeding and wintering grounds of Svalbard, Norway and Solway, Scotland, occurred with a periodicity of 334 days . Further, the orientation of this movement was detected to be mostly north-south. During long-range migration the geese use the north-south oriented Norwegian islands as “stepping stones”, Short-range movement between mudbank roosts to feeding fields in Solway also retained a north-south orientation. Numéro de notice : A2015-681 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12114 En ligne : http://dx.doi.org/10.1111/tgis.12114 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78310
in Transactions in GIS > vol 19 n° 4 (August 2015) . - pp 516 – 534[article]Simplifying photogrammetric analysis for assessment of large mammal mass : automated targeting and 3D model building / L. Catherine Bester in Photogrammetric record, vol 30 n° 150 (June - August 2015)
[article]
Titre : Simplifying photogrammetric analysis for assessment of large mammal mass : automated targeting and 3D model building Type de document : Article/Communication Auteurs : L. Catherine Bester, Auteur ; P. J. Nico de Bruyn, Auteur Année de publication : 2015 Article en page(s) : pp 227 - 241 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie terrestre
[Termes IGN] analyse combinatoire (maths)
[Termes IGN] biologie
[Termes IGN] logiciel de photogrammétrie
[Termes IGN] Mammalia
[Termes IGN] masse
[Termes IGN] objet mobile
[Termes IGN] population animaleRésumé : (Auteur) Close range photogrammetry has increasingly diverse practical application within the biological sciences. Its use in large mammal research for size and/or mass estimation has proven extremely beneficial. Recent photogrammetric technique advancements have improved its applicability in the field, although some analytical components remain time consuming. The use of automated coded targets, associated with commercially available software, was evaluated to simplify photogrammetric analysis without compromising its practicality. The effects of variable target size and shape, lighting conditions, number of photographs, photograph target coverage and project processing time were assessed. Augmenting a published photogrammetric field technique by including coded targets greatly reduced analysis time. The simplified method is attractive for use by a wider range of both specialist and non-specialist users for applications within the animal photogrammetry field. Numéro de notice : A2015-368 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12102 Date de publication en ligne : 14/06/2015 En ligne : https://doi.org/10.1111/phor.12102 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76910
in Photogrammetric record > vol 30 n° 150 (June - August 2015) . - pp 227 - 241[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-2015021 RAB Revue Centre de documentation En réserve L003 Disponible Association of tree and plot characteristics with microhabitat formation in European beech and Douglas-fir forests / Susanne Winter in European Journal of Forest Research, vol 134 n° 2 (March 2015)
[article]
Titre : Association of tree and plot characteristics with microhabitat formation in European beech and Douglas-fir forests Type de document : Article/Communication Auteurs : Susanne Winter, Auteur ; Josef Höfler, Auteur ; Alexa K. Michel, Auteur Année de publication : 2015 Article en page(s) : pp 335 - 347 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation
[Termes IGN] Allemagne
[Termes IGN] Etats-Unis
[Termes IGN] Fagus (genre)
[Termes IGN] habitat animal
[Termes IGN] placette d'échantillonnage
[Termes IGN] Pseudotsuga menziesiiRésumé : (auteur) Process-orientated, unmanaged forest remnants are not sufficient for halting the loss of forest biodiversity. Thus, integrated biodiversity-promoting management for forest inhabitants is needed. Microhabitats, such as tree cavities or bark pockets, are essential for the preservation of saproxylic species and of critical importance for endangered ones. This study investigates (1) which factors trigger the formation of microhabitats at both the individual tree and aggregated plot level, and (2) whether the co-occurrence of microhabitats differs between managed (=logged) and unmanaged forests. Relationships between the occurrence of 17 microhabitat types and individual tree features (e.g. light availability, and tree vitality) and plot characteristics (e.g. stand density index and stand age) in 398 plots dominated by Fagus sylvatica or Pseudotsuga menziesii in Germany and the USA were studied using random-effects logistic and normal regression modelling. Separate analyses were performed for German beech forests, German Douglas-fir forests, and the US Douglas-fir forests. Our results show that (1) tree diameter in breast height (DBH), tree vitality and branchiness or epicormic branches are highly related with the occurrence of one or more microhabitats on individual trees in managed and unmanaged beech and US Douglas-fir forests. In managed German Douglas-fir forests, vitality is not a predictor for the occurrence of microhabitats on a tree, but tree density and the maximum age of trees in a stand in addition to DBH and branchiness have an effect. Time since last management is not a statistically significant predictor for the presence of microhabitats at the tree level, but it is for German beech at the plot level. In Douglas-fir-dominated forests both in Germany and in the USA, the stand density index was the only common predictor at the plot level. (2) Unmanaged German beech and Douglas-fir forests exhibit more statistically significant and positive correlations with microhabitat groups than managed stands, implying that the presence of one microhabitat group on a tree is associated with the presence of other microhabitat groups. We finally conclude that measures for supporting microhabitat inhabitants in managed forests are scale and species dependent (tree versus plot level; beech versus Douglas-fir-dominated forests). Trees that carry microhabitats seem to have similar features independently of forest management. At the plot level, density management may trigger the accumulation of microhabitats. Our results indicate that in forest management, it is possible to consider the factors influencing the formation of microhabitats and implement adequate forest practices to advance their formation. Numéro de notice : A2015-187 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : 10.1007/s10342-014-0855-x Date de publication en ligne : 18/11/2014 En ligne : https://doi.org/10.1007/s10342-014-0855-x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75957
in European Journal of Forest Research > vol 134 n° 2 (March 2015) . - pp 335 - 347[article]Évaluation des conséquences d’aménagements d’infrastructures sur les déplacements d’animaux : Définition et expérimentation d’un modèle de simulation agent / Laurence Jolivet in Cybergeo, European journal of geography, n° 2015 ([01/01/2015])
[article]
Titre : Évaluation des conséquences d’aménagements d’infrastructures sur les déplacements d’animaux : Définition et expérimentation d’un modèle de simulation agent Type de document : Article/Communication Auteurs : Laurence Jolivet , Auteur ; Marianne Cohen, Auteur ; Anne Ruas , Auteur Année de publication : 2015 Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] aménagement forestier
[Termes IGN] aménagement paysager
[Termes IGN] base de données localisées
[Termes IGN] corridor biologique
[Termes IGN] faune
[Termes IGN] Mammalia
[Termes IGN] migration animale
[Termes IGN] modèle de simulation
[Termes IGN] modèle orienté agent
[Termes IGN] trame verte et bleue
[Termes IGN] variabilitéRésumé : (auteur) Landscape elements influence fauna movements. The information is collected so that to identify obstacles and interesting corridors: locations of animals and topographical databases describing the spatial environment. The aim of this research is to simulate fauna movement into spatial areas, both in a real context then in a context modified by infrastructures. We start by analysing the collected movement data and the influence of landscape elements on three species: the red fox, the roe deer and the red deer. The perception of space is different, depending on the species and on the type of environment. As an example, wooded area can be either used for resting or foraging. Then the results of data analyses and knowledge on the species are integrated in a simulation model based on agents. Trajectories are built by taking into account the spatial behaviour of species and the characterization of both obstacles and movement corridors. We finally test the simulation process on a modified area with a road and wildlife infrastructures. We assess the consequences on movements. The model tends to confirm the barrier effect of the motorway even if the effect is reduced by ecological corridors. While the road limits animals’ movements, the corridor favours spatial accessibility and leads to crossings at precise locations. These results highlight the interest of a model in order to assess the efficacy of wildlife preservation such as the measure of “Trame verte et bleue”. Numéro de notice : A2015--067 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.4000/cybergeo.26767 Date de publication en ligne : 21/02/2015 En ligne : http://dx.doi.org/10.4000/cybergeo.26767 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83630
in Cybergeo, European journal of geography > n° 2015 [01/01/2015][article]Stacked space-time densities: a geovisualisation approach to explore dynamics of space use over time / Urška Demšar in Geoinformatica, vol 19 n° 1 (January - March 2015)
[article]
Titre : Stacked space-time densities: a geovisualisation approach to explore dynamics of space use over time Type de document : Article/Communication Auteurs : Urška Demšar, Auteur ; Kevin Buchin, Auteur ; E. Emiel Van Loon, Auteur ; Judy Shamoun-Baranes, Auteur Année de publication : 2015 Article en page(s) : pp 85 - 115 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] agrégation spatiale
[Termes IGN] agrégation temporelle
[Termes IGN] analyse spatio-temporelle
[Termes IGN] Aves
[Termes IGN] cube espace-temps
[Termes IGN] densité
[Termes IGN] distance de propagation
[Termes IGN] données spatiotemporelles
[Termes IGN] estimation par noyau
[Termes IGN] migration animale
[Termes IGN] positionnement cinématique
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) Recent developments and ubiquitous use of global positioning devices have revolutionised movement ecology. Scientists are able to collect increasingly larger movement datasets at increasingly smaller spatial and temporal resolutions. These data consist of trajectories in space and time, represented as time series of measured locations for each tagged animal. Such data are analysed and visualised using methods for estimation of home range or utilisation distribution, which are often based on 2D kernel density in geographic space. These methods have been developed for much sparser and smaller datasets obtained through very high frequency (VHF) radio telemetry. They focus on the spatial distribution of measurement locations and ignore time and sequentiality of measurements. We present an alternative geovisualisation method for spatio-temporal aggregation of trajectories of tagged animals: stacked space-time densities. The method was developed to visually portray temporal changes in animal use of space using a volumetric display in a space-time cube. We describe the algorithm for calculation of stacked densities using four different decay functions, normally used in space use studies: linear decay, bisquare decay, Gaussian decay and Brownian decay. We present a case study, where we visualise trajectories of lesser black backed gulls, collected over 30 days. We demonstrate how the method can be used to evaluate temporal site fidelity of each bird through identification of two different temporal movement patterns in the stacked density volume: spatio-temporal hot spots and spatial-only hot spots. Numéro de notice : A2015-486 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-014-0207-5 Date de publication en ligne : 03/04/2014 En ligne : https://doi.org/10.1007/s10707-014-0207-5 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77249
in Geoinformatica > vol 19 n° 1 (January - March 2015) . - pp 85 - 115[article]Utilisation de QGis comme outil nomade de saisie (2ème partie [bis]: exemples) : CyberTracker, le tester c'est l'adopter / Louise Pereira in Géomatique expert, n° 102 (janvier - février 2015)PermalinkAnalyse multi-temporelle des marges fluviales fréquemment inondées à partir d’images satellites Pléiades / Vincent Wawrzyniak in Revue Française de Photogrammétrie et de Télédétection, n° 208 (Octobre 2014)PermalinkObserver et rendre compte / Françoise de Blomac in DécryptaGéo le mag, n° 158 (01/06/2014)PermalinkRépartition de la biodiversité en France métropolitaine : une synthèse des Atlas faunistiques / Isabelle Witté in VertigO, vol 14 n° 1 (mai 2014)PermalinkAnalyse des préférences spatiales de la faune à partir de différentes sources de données géographiques / Laurence Jolivet (2014)PermalinkImproving knowledge about wildlife mobility in using geographic network analysis / Elodie Buard (2014)PermalinkModélisation des déplacements d'animaux dans un espace géographique : analyse et simulation / Laurence Jolivet (2014)PermalinkRegards sur la forêt / Andrée Corvol (2014)PermalinkThe sights below / Kevin Corbley in GEO: Geoconnexion international, vol 12 n° 9 (october 2013)PermalinkExploring geovisualization symbology for landscape genetics / Eoin Mac Aoidh in Transactions in GIS, vol 17 n° 2 (April 2013)Permalink