Results 121 to 130 of about 78,408 (357)
UAVs unveil the role of small scale vegetation structure on wader nest survival
Remote Sensing in Ecology and Conservation, EarlyView.In this study, we combine high‐resolution vegetation structural metrics derived from unmanned aerial vehicle (UAV) imagery with on‐field wader nest survival monitoring. We show that the immediate vegetation height and heterogeneity within a 2‐meter buffer surrounding the clutch of the recorded ground‐nesting wader species positively influenced its ...
Miguel Silva‐Monteiro +5 more
wiley +1 more source
QGIS - Visualiser un MNT (QGIS 3)
Cette fiche présente quelques manipulations pour améliorer le rendu visuel d'une image raster type MNT (Modèle numérique de terrain) dans QGIS.
openaire +2 more sources
, 2020 FOSSGIS 2020 : Anwenderkonferenz für Freie und Open Source Software für Geoinformationssysteme: Freiburg 11.-14.
openaire +2 more sources
Remote Sensing in Ecology and Conservation, EarlyView.Accurately estimating forest age is key to understanding how forests recover and evaluating restoration success. We developed a two‐step deep learning approach using historical greyscale aerial photographs to map forest age at fine spatial scales. By combining a pre‐trained model with localized fine‐tuning, our U‐Net + ResNet50 architecture achieved ...
Ying Ki Law +10 more
wiley +1 more source
Gerrymandering and Compactness: Implementation Flexibility and Abuse
, 2018 The shape of an electoral district may suggest whether it was drawn with political motivations, or gerrymandered. For this reason, quantifying the shape of districts, in particular their compactness, is a key task in politics and civil rights.
Barnes, Richard, Solomon, Justin
core +1 more source
Using time‐series remote sensing to identify and track individual bird nests at large scales
Remote Sensing in Ecology and Conservation, EarlyView.Time‐series airborne imagery can potentially track individuals over time to collect information beyond one‐off counts. Using weekly UAS‐based imagery of wading bird colonies, we develop an automated approach to identifying nests. Our algorithmic approach detected 68–74% of known nests and exhibited similar performance to human review of imagery ...
S. K. Morgan Ernest +6 more
wiley +1 more source
Large‐scale characterization of horizontal forest structure from remote sensing optical images
Remote Sensing in Ecology and Conservation, EarlyView.Sub‐meter resolution remote sensing data and tree crown segmentation techniques hold promise in offering detailed information that can support the characterization of forest structure from a horizontal perspective, offering new insights in the tree crown structure at scale.
Xin Xu +12 more
wiley +1 more source
An SDI for the GIS-education at the UGent Geography Department [PDF]
, 2011 The UGent Geography Department (GD) (ca. 200 students; 10 professors) has been teaching GIS since the mid 90’s. Ever since, GIS has evolved from Geographic Information Systems, to GIScience, to GIServices; implying that a GIS specialist nowadays has to ...
De Maeyer, Philippe +3 more
core
TAXON, EarlyView.Abstract We explore phylogenetic relationships within the Pachira sensu lato clade (Bombacoideae, Malvaceae), test the monophyly of the genera Eriotheca and Pachira, and investigate their biogeographic history. The Pachira s.l. clade comprises ca. 72 species that traditionally have been placed in Eriotheca and Pachira. We sampled ca. 79% of its species
Vania Nobuko Yoshikawa +7 more
wiley +1 more source
Revista de Iniciación Científica, 2016 Este trabajo consiste en definir una cuenca hidrográfica mediante el uso de software de licencia libre para que cualquier usuario pueda tener acceso a ellos sin costo alguno.
Daniel Acosta +6 more
doaj