Results 81 to 90 of about 36,780 (281)

Harry's Dream Lift at Beaver Mountain

, 2022
Photo of Harry's Dream Lift at Beaver Mountain, April 17 ...

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Seasonal variations and challenges in estimating populations and identifying species of Korean ungulates using drone‐derived thermal orthomosaic maps

Wildlife Biology, EarlyView.
Drones equipped with thermal infrared (TIR) cameras offer significant time and labor savings in estimating wild ungulate populations. However, accurately monitoring forest‐dwelling ungulates remains challenging due to their elusive behavior and complex habitat.
Jinhwi Kim, Donggul Woo
wiley   +1 more source

Beaver (Castor canadensis)

, 1963
A picture of a beaver gnawing on a branch with water, rocks, and other trees in the background and grass in the foreground.This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program.

core   +1 more source

The performance of drones and artificial intelligence for monitoring sage‐grouse at leks

Wildlife Biology, EarlyView.
Accurately monitoring sage‐grouse populations is critical for conservation, yet traditional ground‐based visual surveys face challenges in scalability and consistency, prompting the exploration of innovative drone‐based methodologies enhanced by artificial intelligence.
Lance B. McNew, Jason Hanlon, Ilya Buzytsky   +2 more
wiley   +1 more source

Red Ryder with Little Beaver

, 1960
Red Ryder is leaning on a horse rail in front of a building in little Beaver Town.

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Estimating red deer Cervus elaphus population density using drones in a steep and rugged terrain

Wildlife Biology, EarlyView.
Precise and accurate information about population density, crucial for wildlife management, is difficult to obtain for elusive species living in dense forests or steep and inaccessible terrain. Using unmanned aerial vehicles (UAVs), we developed a method for obtaining absolute population estimates of ungulates living in steep, rugged, and partly ...
Julie Bommerlund, Torbjørn Ergon, Simon Filhol, Atle Mysterud   +3 more
wiley   +1 more source

Experimental assessment of large mammal population estimates from airborne thermal videography

Wildlife Biology, EarlyView.
Wildlife resource management requires reliable, fast, and affordable methods of surveying wildlife populations to develop and adaptively adjust policies. Thermal video from drones can yield high rates of detection over large areas with relative speed and safety.
Julia S. McElhinny, Gregory D. Larsen, Maxwell Messinger, Chad H. Newbolt, Andrew Whitworth, Stephen S. Ditchkoff, Miles R. Silman, Jared T. Beaver   +7 more
wiley   +1 more source

Elk at Beaver Mountain

, 1946
Elk at Beaver ...

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Born to die: pack and population level estimates of wolf pup survival and recruitment in the Greater Voyageurs Ecosystem

Wildlife Biology, EarlyView.
Wolf pup Canis lupus survival is a key driver of wolf population dynamics that remains poorly understood, especially in forested systems, because wolf pups are difficult to monitor. We used a combination of pup counts at dens and remote camera observations to estimate annual survival and recruitment of wolf pups in the Greater Voyageurs Ecosystem, MN ...
Andrea Hynes, Thomas D. Gable, Austin T. Homkes, Joseph K. Bump, John G. Bruggink   +4 more
wiley   +1 more source

Beavers can convert stream corridors to persistent carbon sinks

Communications Earth & Environment
Recent reintroductions of the Eurasian beaver (Castor fiber) across Europe represents an ecological shift with potential implications for carbon cycling in stream corridors. However, the capacity of beaver impacts to influence short- and long-term carbon
Lukas Hallberg, Annegret Larsen, Natalie Ceperley, Raphael d’Epagnier, Tom F. Brouwers, Bettina Schaefli, Sarah Thurnheer, Josep Barba, Christof Angst, Matthew Dennis, Joshua R. Larsen   +10 more
doaj   +1 more source