Results 21 to 30 of about 179,801 (303)
Ecosphere, 2022 Informing conservation and management decisions for habitats frequented by species of high management interest often face the challenge of limited resources for conducting wildlife surveys.
Cody E. Deane +4 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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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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Use of Unmanned Aerial Vehicles for Traffic Surveys
Logi, 2022 The paper deals with the topic of monitoring traffic using unmanned aerial vehicles. The main research goal was to test the possibility of using aerial vehicles for traffic engineering applications, especially for determining the traffic intensity on ...
Kampf Rudolf +3 more
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Antarctic Record, 2013 Two small unmanned aerial vehicles, Ant-Plane 6 and Ant-Plane 3, were assembled using parts and technologies developed for model airplanes. The aerial vehicles were scheduled to conduct aero magnetic and photographic surveys of the Brans?eld Basin, from ...
Minoru Funaki +7 more
doaj +1 more source
Narwhal (Monodon monoceros) detection by infrared flukeprints from aerial survey imagery
Ecosphere, 2021 Visual and observer aerial surveys are important for monitoring wildlife populations but are subject to visibility biases where animals may go undetected.
Katie R. N. Florko +5 more
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Nature Conservation Research: Заповедная наука, 2018 The Gydan Peninsula is one of the least explored and inaccessible Arctic regions in both the Yamalo-Nenetsky Autonomous Okrug and Russia as a whole. In 2016–2017 we conducted a survey of the Gydansky State Nature Reserve and adjacent areas, counted and ...
Sofia B. Rozenfeld +6 more
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Unmanned Aerial Survey of Elephants
PLoS ONE, 2013 The use of a UAS (Unmanned Aircraft System) was tested to survey large mammals in the Nazinga Game Ranch in the south of Burkina Faso. The Gatewing ×100™ equipped with a Ricoh GR III camera was used to test animal reaction as the UAS passed, and visibility on the images. No reaction was recorded as the UAS passed at a height of 100 m.
Vermeulen, Cédric +4 more
openaire +5 more sources
Koedoe: African Protected Area Conservation and Science, 1990 Objectives, techniques and problems of monitoring ungulate population structure and trends using standardised ground surveys as an adjunct to aerial counts are described and discussed in the light of experience gained over the past seven years.
D.R. Mason
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Spatial ecology of long‐tailed ducks and white‐winged scoters wintering on Nantucket Shoals
Ecosphere, 2020 We examine the long‐term co‐occurrence of long‐tailed ducks (Clangula hyemalis) and white‐winged scoters (Melanitta fusca) wintering at the Nantucket Shoals off Massachusetts, USA, and ask: (1) What oceanographic features attract these aggregations?
Timothy P. White, Richard R. Veit
doaj +1 more source