16 Hits in 9.3 sec

Estimation of woody plant species diversity during a dry season in a savanna environment using the spectral and textural information derived from WorldView-2 imagery

Emmanuel Fundisi, Walter Musakwa, Fethi B. Ahmed, Solomon G. Tesfamichael, Wang Li
2020 PLoS ONE  
This study aimed to assess the performance of multiple Gray Level Co-occurrence Matrices (GLCM) derived from individual bands of WorldView-2 satellite imagery to quantify woody plant species diversity  ...  However, the performance of satellite imagery in assessing woody plant species diversity in dry seasons has been understudied.  ...  Acknowledgments The authors thank Bishop Ngobeli (Manager of the Klipriviersberg Nature Reserve) for unlimited access to the reserve and for additional transportation support to and from the reserve.  ... 
doi:10.1371/journal.pone.0234158 pmid:32511261 fatcat:g4z6ppcpsne3tj5eiovefrvno4

Identification and mapping of natural vegetation on a coastal site using a Worldview-2 satellite image

Sébastien Rapinel, Bernard Clément, Sylvie Magnanon, Vanessa Sellin, Laurence Hubert-Moy
2014 Journal of Environmental Management  
The study objectives are to discriminate natural vegetation and identify natural vegetation formations using a Worldview-2 satellite image.  ...  The classification of the Worldview-2 image and ancillary thematic data was performed using a hybrid pixel-based and object-oriented approach.  ...  fine-scale plant species beta diversity in grassland (Dalmayne et al, 2013 ), but to our knowledge only one study deals with vegetation mapping tasks applied to urban tree species (Pu and Landry, 2012  ... 
doi:10.1016/j.jenvman.2014.05.027 pmid:24973612 fatcat:albf6gki5bc6jctzztqyrtrkv4

Mapping Arctic Plant Functional Type Distributions in the Barrow Environmental Observatory Using WorldView-2 and LiDAR Datasets

Zachary Langford, Jitendra Kumar, Forrest Hoffman, Richard Norby, Stan Wullschleger, Victoria Sloan, Colleen Iversen
2016 Remote Sensing  
We combined high-resolution multi-spectral remote sensing imagery from the WorldView-2 satellite with light detecting and ranging (LiDAR)-derived digital elevation models (DEM) to characterize the tundra  ...  Multi-scale modeling of Arctic tundra vegetation requires characterization of the heterogeneous tundra landscape, which includes representation of distinct plant functional types (PFTs).  ...  We thank Paul Morin at the Polar Geospatial Center for providing the WorldView-2 imagery. This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S.  ... 
doi:10.3390/rs8090733 fatcat:3d4ixrg7srggfnecz5as7mllfu

In-Situ and Remote Sensing Platforms for Mapping Fine-Fuels and Fuel-Types in Sonoran Semi-Desert Grasslands

Steven Sesnie, Holly Eagleston, Lacrecia Johnson, Emily Yurcich
2018 Remote Sensing  
LAI explained 65% of the variance in fine-fuel biomass using simple linear regression.  ...  The variety of continuously updated satellite remote sensing systems provide opportunities for efficiently mapping combustible fine-fuels and fuel-types (e.g., grass, shrub, or tree cover) over large landscapes  ...  The US Fish and Wildlife Service (USFWS) contributed equipment, vehicles, staff time, and housing in the field that were critical to accomplishing the work.  ... 
doi:10.3390/rs10091358 fatcat:vc732ruyana67ickzlizejut2m

The Spectral Species Concept in Living Color

Rocchini Duccio, Santos Maria, Ustin Susan, Féret Jean‐Baptiste, Asner Gregory, Beierkuhnlein Carl, Dalponte Michele, Feilhauer Hannes, Foody Giles, Geller Gary, Gillespie Thomas, He Kate (+18 others)
2022 Zenodo  
At the heart of this framework for monitoring plant biodiversity is the idea of remotely identifying species by making use of the 'spectral species' concept.  ...  Biodiversity monitoring is an almost inconceivable challenge at the scale of the entire Earth.  ...  platforms; and more recently (iv) the Sentinel-2 satellites of the ESA Copernicus program.  ... 
doi:10.5281/zenodo.7105394 fatcat:lfbfvhjwyvhvnklujvcyaxjp3u

Data Fusion in Earth Observation and the Role of Citizen as a Sensor: A Scoping Review of Applications, Methods and Future Trends

Aikaterini Karagiannopoulou, Athanasia Tsertou, Georgios Tsimiklis, Angelos Amditis
2022 Remote Sensing  
Preliminary results showcased a preference in the multispectral satellite sensors, with the microwave sensors to be used as a supplementary data source.  ...  An exception is revealed in the smaller-scale studies, which showed a preference for deep learning models.  ...  Following the above, GaoFen-2 (GF-2) [44, 87] and WorldView-2&3 [46, 104, 111, 114] satellite sensors were used to derive high-level semantic objects and high-resolution population density information  ... 
doi:10.3390/rs14051263 fatcat:ffg4ulntnrdrxaknuydepyvelm

Xxxii Scar Open Science Conference 'Antarctic Science And Policy Advice In A Changing World - Conference Abstracts [article]

Eoghan Griffin, Renuka Badhe
2016 Zenodo  
Abstracts from the 2012 Open Science Conference of the Scientific Committee on Antarctic Research (SCAR), Antarctic Science and Policy Advice in a Changing World, held in Portland, Oregon, USA  ...  abstract: Since the production of the ADMAP-2001 map, more than 1.5 million line-km of new marine and airborne magnetic survey data, as well as much improved satellite magnetic observations from the Ørsted  ...  In particular, improved modeling of geodynamic evolution of the Antarctic lithosphere that was a key  ... 
doi:10.5281/zenodo.53122 fatcat:o56w4vr3n5bsvkyj6vnetfem3e

Assessing diversity of prairie plants using remote sensing

Ran Wang
Species identities also showed substantial effects on spectral diversity metrics at the fine scale.  ...  for assessing community composition and diversity; and assessing species richness directly from patterns of spectral variation to yield α-diversity.  ...  We also thank Aidan Mazur and Melanie Sitten from University of Wisconsin-Madison for helping collect the whole plot reflectance data.  ... 
doi:10.7939/r32805c5n fatcat:sjdszzjn3zdmreiwuol7lokzby

Present State of CFD Softwares Application for Launch Vehicle Analysis
발사체 해석을 위한 CFD 소프트웨어 적용 현황

Hwanghui Jeong, Jae Yeol Kim, Jae-Ryul Shin
2020 Journal of the Korean Society of Propulsion Engineers  
This software program takes an XML representation of the contents of a Hierarchical Data Format-Earth Observing System (HDF-EOS) file and recreates the file from that description .  ...  Government Purpose Release Fine Motor Skills (FMS) Software Application MSC-26032-1 The Fine Motor Skills (FMS) software is an iPad ® application used to collect data on fine motor movements using four  ...  chemical species along a line-of-sight .  ... 
doi:10.6108/kspe.2020.24.3.071 fatcat:trxkhiuqrjakll32bcjxskgwju

Adjusting Second Moment Bias in Eigenspace Using Bayesian Empirical Estimators, Dirichlet Tessellations and Worldview I Data for Predicting Culex quinquefasciatus Habitats in Trinidad

Benjamin G. Jacob, Dave D. Chadee, Robert J. Novak
2011 Journal of Geographic Information System  
We assessed the performance accuracy of the interpolation procedures based on the magnitude and distribution of errors between observed and model-predicted values using Voroni tessellations.  ...  In this paper we used spatially lagged and simultaneous autoregressive models based on multiple predictor variables of immature Cx. quinquefasciatus and Worldview 1 (WV-1) data to help implant a remote  ...  We acknowledge the data collection provided by the Ministry of Health in Trinidad and Tobago and the Department of Life Sciences, University of the West Indies, St. Augustine, and Trinidad.  ... 
doi:10.4236/jgis.2011.31003 fatcat:wpjymybotva55bsssuqxe65riu

C2H [chapter]

2015 Encyclopedia of Astrobiology  
The cation C 3 H + is thought to play an important role in gas phase reactions in the ▶ interstellar medium that lead to the formation of small hydrocarbons.  ...  The neutral radical, C 3 H (▶ propynylidyne) can exist in both a linear (l-C 3 H) and a cyclic (c-C 3 H) form, and both these neutral species have been detected in interstellar molecular clouds.  ...  It is important to assess whether this diversity is correlated with different sites of formation or to different evolutions of these bodies.  ... 
doi:10.1007/978-3-662-44185-5_100142 fatcat:bkzmrhdghvhbdh7s3u4aem7aaa

Examining spatiotemporal changes in the phenology of Australian mangroves using satellite imagery

Nicolás Younes
Linear and beta models produce similar results when predicting FVC from spectral bands or indices particularly at fine spatial resolutions.  ...  Heenkenda et al. (2014) automated the image classification of aerial photographs and WorldView-2 imagery to distinguish mangrove species from other vegetation.  ... 
doi:10.25903/7y75-4627 fatcat:v65uastb2jcwtjxyj2tllya54y

Ecological monitoring of semi-natural grasslands: statistical analysis of dense satellite image time series with high spatial resolution Sciences Ecologiques, Vétérinaires, Agronomiques et Bioingénieries (SEVAB) Dynamique et écologie des paysages agriforestiers (Dynafor) Directeur(s) de Thèse : Membre(s) du jury

M Mathieu, Fauvel Stephane, Girard Rapporteurs, M Allard, Inra Avignon, M Jean-Baptiste, Feret, Membre Irstea, Inra Duru, Toulouse, Annie Ouin, Aude Vialatte (+7 others)
Specials thanks to Clélia Sirami, Romain Carrié, Rémi Duflot and Nicolas Gross for sharing their knowledge about grasslands' species diversity.  ...  We thank Sylvie Duthoit for advising on the practical use of the device.  ...  Indeed, the similarity measures could be used as "spectral beta-diversity", and we proposed a spectral dissimilarity measure based on the clusterings of grasslands in Chapter 6.  ... 

Modelling the dynamic pattern of surface area in basketball and its effects on team performance

Rodolfo Metulini, Marica Manisera, Paola Zuccolotto
2018 Journal of Quantitative Analysis in Sports (JQAS)  
Finally, we assess the relation between the regime probabilities and the scored points by means of Vector Auto Regressive (VAR) models.  ...  Using a time series of basketball players' coordinates, we focus on the dynamics of the surface area of the five players on the court with a two-fold purpose: (i) to give tools allowing a detailed description  ...  To date, Cronbachs coefficient alpha is the most commonly used index for assessing the reliability of a scale.  ... 
doi:10.1515/jqas-2018-0041 fatcat:b3qwsi7tqjg2vdo7gbjtiorv6m

Assessing the potential of sentinel-1 and sentinel-2 satellite imagery for shoreline classification in support of oil spill preparedness and response

Maria Yulmetova
These results demonstrated the high potential of using freely available Sentinel-1 and -2 satellite data for coastal mapping.  ...  This study estimates the potential of using open-access, high-resolution Sentinel-1 and Sentinel-2 imagery for the mapping of shoreline types in support of oil spill preparedness and response activities  ...  Lane et al. (2014) used a high spatial resolution WorldView-2 (WV-2) satellite, which provides imagery in eight spectral bands, including coastal, blue, green, yellow, red, red-edge, and two NIR bands  ... 
doi:10.48336/kh9n-cn43 fatcat:pp2fhjcdenaf7gtglfzdxt4eia
« Previous Showing results 1 — 15 out of 16 results