Results 11 to 20 of about 181,408 (304)
Remote Sensing, 2022 The advent of unoccupied aerial vehicles (UAVs) has enhanced our capacity to survey wildlife abundance, yet new protocols are still required for collecting, processing, and analysing image-type observations.
Eyal Bigal +7 more
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REPORT ON THE MAP OF WEST ONGUL ISLAND
Antarctic Record, 1965 0ne sheet map of West Ongul Island, separated by a narrow strait from East Ongul Island in which Syowa Station is situated, was compiled with 1 : 5,000 scale.
Arao YOSHIDA, Yoshio SAITO
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Monitoring trends in sea turtle populations: walk or fly?
Endangered Species Research, 2017 Monitoring animal populations is essential to conservation, and complex monitoring goals require complex resources. Variable detection probabilities can create uncertainty in trends and abundances estimated from point count surveys (e.g. nest counts), as
Warden, ML +4 more
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International Journal of Advanced Research in Science, Communication and Technology, 2022 The use of unmanned aerial vehicles (UAVs) is growing rapidly across many civil application domains including real-time monitoring, providing wireless coverage, remote sensing, search and rescue, delivery of goods, security and surveillance, precision agriculture, and civil infrastructure inspection.
null Reshma K R +2 more
openaire +1 more source
Applied Sciences, 2021 Unmanned aerial systems (UAS) for airborne gamma-ray surveys in radioecological and geological research are being increasingly used, since they provide radiation safety for personnel and high survey performance. Improvement of detection modules is one of
Alexander Parshin +4 more
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Echolocation detections and digital video surveys provide reliable estimates of the relative density of harbour porpoises [PDF]
, 2016 Acknowledgements We would like to thank Erik Rexstad and Rob Williams for useful reviews of this manuscript. The collection of visual and acoustic data was funded by the UK Department of Energy & Climate Change, the Scottish Government, Collaborative ...
Beth E. Scott +10 more
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Harbour Porpoise Abundance in Portugal over a 5-Year Period and Estimates of Potential Distribution
Animals, 2022 The Iberian porpoise population is small and under potentially unsustainable removal by fisheries bycatch. Recently, a marine Site of Community Importance (SCI) was legally approved in Portugal, but no measures ensued to promote porpoise conservation ...
Andreia Torres-Pereira +10 more
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Wildlife Society Bulletin, 2012 Aerial surveys using line‐intercept methods are one approach to estimate the extent of prairie dog colonies in a large geographic area. Although black‐tailed prairie dogs (Cynomys ludovicianus) construct conspicuous mounds at burrow openings, aerial ...
John G. Sidle +5 more
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Wildlife Society Bulletin, 2014 Population monitoring requires techniques that produce estimates with low bias and adequate precision. Distance sampling using ground‐based thermal infrared imaging (ground imaging) and spotlight surveys is commonly used to estimate population densities ...
Jared T. Beaver +8 more
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Visibility of St Lawrence belugas to aerial photography, estimated by direct observation
NAMMCO Scientific Publications, 2002 The depleted population of belugas (Delphinapterus leucas) inhabiting the St Lawrence estuary, Canada, was monitored by periodic photographic aerial surveys. In order to correct counts made on aerial survey film and to obtain an estimate of the true size
Michael CS Kingsley, Isabelle Gauthier
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