Results 21 to 30 of about 288,912 (350)

Surveying wildlife and livestock in Uganda with aerial cameras: Deep Learning reduces the workload of human interpretation by over 70%

Frontiers in Ecology and Evolution, 2023
As the need to accurately monitor key-species populations grows amid increasing pressures on global biodiversity, the counting of large mammals in savannas has traditionally relied on the Systematic-Reconnaissance-Flight (SRF) technique using light ...
Alexandre Delplanque, Richard Lamprey, Samuel Foucher, Jérôme Théau, Jérôme Théau, Philippe Lejeune   +5 more
doaj   +1 more source

Shifting Goalposts: Setting Restoration Targets for Waterbirds in the Murray-Darling Basin Under Climate Change

Frontiers in Environmental Science, 2021
The Murray-Darling Basin (the Basin) is the largest river system in Australia, supplying about 40% of the country’s irrigated agricultural output. Associated water resource development has come with a heavy price for the Basin’s freshwater ecosystems ...
Gilad Bino, Kate Brandis, Richard T. Kingsford, John Porter, John Porter   +4 more
doaj   +1 more source

Recent experience of surveying the spawning grounds of pacific salmons in the water bodies of Chukotka

Известия ТИНРО, 2020
Aerial survey of the pacific salmon spawning grounds was conducted in the water bodies of Chukotka belonged to the Bering Sea basin (the Anadyr, Velikaya, Tumanskaya Rivers and Meinypilgyno lake-river system) in 2019, for the first time since 1992. Total
E. A. Shevlyakov, S. V. Shubkin
doaj   +1 more source

Confirmation of significant sea turtle nesting activity on a remote island chain in the Gulf of Mexico

Ecology and Evolution, 2023
Globally, six of the seven sea turtle species are threatened or endangered and as such, monitoring reproductive activity for these species is necessary for effective population recovery.
Margaret M. Lamont, Dianne Ingram, Todd Baker, Matt Weigel, Brian M. Shamblin   +4 more
doaj   +1 more source

Mapping out bare-nosed wombat (Vombatus ursinus) burrows with the use of a drone

BMC Ecology, 2019
Background Wombats are large, nocturnal herbivores that build burrows in a variety of habitats, including grassland communities, and can come into conflict with people.
Julie M. Old, Simon H. Lin, Michael J. M. Franklin   +2 more
doaj   +1 more source

Warm beach, warmer turtles: Using drone-mounted thermal infrared sensors to monitor sea turtle nesting activity

Frontiers in Conservation Science, 2022
For decades sea turtle projects around the world have monitored nesting females using labor-intensive human patrolling techniques. Here we describe the first empirical testing of a drone-mounted thermal infrared sensor for nocturnal sea turtle monitoring;
Bárbara Sellés-Ríos, Eleanor Flatt, Eleanor Flatt, Johan Ortiz-García, Júlia García-Colomé, Orane Latour, Andrew Whitworth, Andrew Whitworth, Andrew Whitworth   +8 more
doaj   +1 more source

An automatic spectral stabilization based on adaptive derivative Gaussian peaking algorithm

He jishu
BackgroundAviation γ spectrometer, measuring at high-altitude with low background counting rate, is prone to spectral line drift caused by factors such as long stable spectral periods and significant temperature effects due to its low background counting
WU Leichao, LI Jiangkun, ZHANG Guangya, WU Xue, LI Yizhou   +4 more
doaj   +1 more source

Evaluation of an Innovative Rosette Flight Plan Design for Wildlife Aerial Surveys with UAS

Drones, 2023
(1) Regular wildlife abundance surveys are a key conservation tool. Manned aircraft flying transects often remain the best alternative for counting large ungulates.
Julie Linchant, Philippe Lejeune, Samuel Quevauvillers, Cédric Vermeulen, Yves Brostaux, Simon Lhoest, Adrien Michez   +6 more
doaj   +1 more source

Study on wavelet denoising effect of transient electromagnetic method based on optimal threshold reference

Meikuang Anquan
The field data acquisition of transient electromagnetic method is prone to jump due to various random disturbances. Wavelet denoising realizes data denoising by multi-scale decomposition, threshold setting and reconstruction of signal.
Yi DONG, Chuang YANG
doaj   +1 more source

Small Unmanned Aircraft Systems and Agro-Terrestrial Surveys Comparison for Generating Digital Elevation Surfaces for Irrigation and Precision Grading

Drones, 2023
Advances in remote sensing and small unmanned aircraft systems (sUAS) have been applied to various precision agriculture applications. However, there has been limited research on the accuracy of real-time kinematic (RTK) sUAS photogrammetric elevation ...
Richard A. Pickett, John W. Nowlin, Ahmed A. Hashem, Michele L. Reba, Joseph H. Massey, Scott Alsbrook   +5 more
doaj   +1 more source