Results 191 to 200 of about 1,003 (253)

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

Forage Height and Above-Ground Biomass Estimation by Comparing UAV-Based Multispectral and RGB Imagery. [PDF]

Sensors (Basel)
Wang H, Singh KD, Poudel HP, Natarajan M, Ravichandran P, Eisenreich B.   +5 more
europepmc   +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

Oxidizing pollutants can disrupt nestmate recognition in ants. [PDF]

Proc Natl Acad Sci U S A
Jiang NJ, Bhat BA, Briceño-Aguilar E, Lehmann A, Ulrich Y, Hansson BS, Knaden M.   +6 more
europepmc   +1 more source

Parturition timing and the pre‐ and post‐partum behaviour of female moose assessed using animal‐borne video and movement‐based approaches

Wildlife Biology, EarlyView.
Limited information on moose calving behaviour, including parturition timing, cow‐calf interactions, and pre‐ and post‐partum movement patterns hinder our ability to define calving phenology and habitat use. GPS‐collars were deployed on 89 female moose over five years, including eight collars equipped with animal‐borne video and environmental data ...
Mikaela Borgeaud LeBlanc, Manuelle Landry‐Cuerrier, Vincent Brodeur, Murray M. Humphries   +3 more
wiley   +1 more source

Analysis on the potential of Pennisetum hydridum for phytoremediation of Cd-polluted soil fertilized by worm castings. [PDF]

PLoS One
Hong X, Zhang Z, Wan Z.
europepmc   +1 more source

Snaplage residue as a fiber source for finishing beef cattle under grazing: effects on residue characteristics, cattle behavior and performance, and carcass traits. [PDF]

Transl Anim Sci
de Lima IBG, Cruz PJR, Borges LPC, Gionbelli MP, Ladeira MM, Shike DW, Casagrande DR, Bernardes TF.   +7 more
europepmc   +1 more source

Effects of mid-gestation supplementation with dried distillers' grains and soybean hull-based total mixed ration silages on maternal metabolism, uteroplacental hemodynamics, and offspring development in beef cows. [PDF]

J Anim Sci
Nascimento KB, Ferreira RL, Vaz VD, Meneses JAM, Casagrande DR, Gionbelli MP, Bernardes TF.   +6 more
europepmc   +1 more source

Identifying genetic determinants of forage sorghum [Sorghum bicolor (Moench)] adaptation through GWAS. [PDF]

BMC Plant Biol
Behera PP, Singode A, Bhat BV, Borah N, Verma H, Supriya P, Sarma RN.   +6 more
europepmc   +1 more source

Diversity of ecotypes of five species of ryegrass from Northwestern Spain by phenotypic traits and microsatellites. [PDF]

BMC Plant Biol
Fernández-Otero CI, Ramos-Cabrer AM, Pereira-Lorenzo S.   +2 more
europepmc   +1 more source