Results 21 to 30 of about 20,893 (257)
Remote Sensing, 2019 Understanding forest dynamics is important for assessing the health of urban forests, which experience various disturbances, both natural (e.g., treefall events) and artificial (e.g., making space for agricultural fields).
Heejoon Choi +2 more
doaj +1 more source
NAMMCO Scientific Publications, 2020 This study presents the first fully corrected abundance estimates for the harbour porpoise (Phocoena phocoena) for Iceland and the Faroe Islands. In both regions reliable estimates are needed to assess the impact of by-catch and other threats to harbour ...
Anita Gilles +4 more
doaj +1 more source
An automatic spectral stabilization based on adaptive derivative Gaussian peaking algorithm
He jishuBackgroundAviation 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 +4 more
doaj +1 more source
Pachyderm, 1983 Summarizes results from the 1981 Selous aerial survey, which included about 35% of the Reserve, and compares them to the 1976 data. Elephant numbers seem to have remained relatively stable with the 1976 estimate being 82,628 +/- 17% and the 1981 one ...
Markus Borner
doaj +1 more source
L’avancée récente de l’étude des réseaux routiers anciens de la région Bretagne (1995-2020)
Archéopages, 2022 Ten years ago, the SRA of Brittany launched an inventory of the main road network of Brittany’s peninsula, in order to record remains and routes reconstructed in Patriarch as archaeological entities.
Gilles Leroux, Thierry Lorho
doaj +1 more source
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
Meikuang AnquanThe 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
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 +2 more
doaj +1 more source
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 +5 more
doaj +1 more source
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 +4 more
doaj +1 more source