Results 11 to 20 of about 1,578,040 (262)
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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Repurposing open‐source data from weather radars to reduce the costs of aerial waterbird surveys
Ecological Solutions and Evidence, 2022 Aerial counts are the primary means of monitoring waterbird populations. A valid population assessment requires a significant proportion of the population to be surveyed.
Rebecca M. Rogers +3 more
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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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ANALYSIS OF ACCURACY OF INITIAL DATA USED IN MODELING RELIEF AND PROFILE OF THE MAIN PIPELINES ROUTE
Известия Томского политехнического университета: Инжиниринг георесурсов, 2022 The relevance of the research is caused by fact that in order to ensure the safe operation of pipeline networks in areas with active natural processes, it is always necessary to organize monitoring of the pipeline route corridor.
Daniil V. Dolgopolov +4 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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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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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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Blue Ridge Aerial Surveys, "Aerial View of Reston, Virginia," August 16, 1979
, 2011 Image: Photo, black and white original; 10" x 8" (25.3 cm x 20.3 cm)Aerial view of Reston, Virginia taken by Blue Ridge Aerial Surveys on August 16, 1979. Image shows a shopping center with nearby housing complex.
Blue Ridge Aerial Surveys
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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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Comparison of aerial surveys and pellet‐based distance sampling methods for estimating deer density
Wildlife Society Bulletin, 2012 Wildlife biologists require density estimates for white‐tailed deer (Odocoileus virginianus) to facilitate management. Aerial surveys are often used to obtain density estimates, but are subject to problems necessitating the consideration of novel ...
Rachael E. Urbanek +3 more
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