Results 91 to 100 of about 57,409 (280)
Livestock as insurance and social status. Evidence from reindeer herding in Norway [PDF]
The theory of livestock as a buffer stock predicts that agropastoralists facing substantial risks typically will use liquid assets, such as livestock, for self-insurance to smooth consumption.
Anders Skonhoft, Anne Borge Johannesen
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Life and death in wolverines [PDF]
, 2013 Developing trustworthy conservation planning for endangered species requires a deep understanding of the variations of their populations in both space and time.
Rauset, Geir Rune
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Monitoring wildlife using long‐endurance solar‐electric UAVs
Wildlife Biology, EarlyView.This report discusses the effectiveness of using small solar‐electric UAV (uncrewed aerial vehicles) for aerial wildlife monitoring. We review four years of aerial wildlife monitoring missions using a 5.5‐m wingspan, solar‐electric UAV that was equipped with a gimballed IR/RGB camera.
Götz Bramesfeld +3 more
wiley +1 more source
Can a snow structure model estimate snow characteristics relevant to reindeer husbandry?
Rangifer, 2014 Snow affects foraging conditions of reindeer e.g. by increasing the energy expenditures for moving and digging work or, in contrast, by making access of arboreal lichen easier.
Sirpa Rasmus +2 more
doaj +1 more source
, 1999 Free-range reindeer in western Alaska are managed for both velvet antler and meat production. Optimal management should maximize the income generated from both meat and antler production while managing the herd at levels below the carrying capacity
Finstad, G.L., Prichard, A.K.
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Micro‐habitat selection by boreal woodland caribou improves access to food
Wildlife Biology, EarlyView.Bio‐logging sensors attached to radiotelemetry receivers have great potential to transform our understanding of the ecological, physiological, and energetic constraints that shape patterns of wildlife movement under field conditions. We used video camera collars to assess microhabitat selectivity by woodland caribou Rangifer tarandus in boreal forests ...
Ian D. Thompson +8 more
wiley +1 more source
, 1989 This report describes one aspect of successful air transport developed over the past 20 years in ...
Dieterich, Robert A.
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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 +3 more
wiley +1 more source
Results of the 2000 census of wild reindeer on the Taimyr Peninsula
Rangifer, 2003 We conducted a census of wild reindeer (Rangifer tarandus) on the Taimyr Peninsula during 21-25 July 2000. This was the eighteenth aerial population census of wild reindeer on the Taimyr since counts began in 1959.
Leonid A. Kolpashchikov +2 more
doaj +1 more source
, 1992 High rates of female breeding success and offspring survival are the two major factors in productivity of any commercial livestock industry. To im prove breeding success and offspring survival, the herd m anager will establish selection criteria and ...
Blake, John E., Renecker, Lyle A.
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