Results 121 to 130 of about 7,761 (159)

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

Simulation-Based Spatially Explicit Close-Kin Mark-Recapture. [PDF]

Mol Ecol Resour
Patterson G, Goodfellow CK, Ting N, Kern AD, Ralph PL.   +4 more
europepmc   +1 more source

An empirical Bayesian approach to incorporate directional movement information from a forage fish into the Arnason-Schwarz mark-recapture model. [PDF]

Mov Ecol, 2021
Bishop MA, Bernard JW.
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

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

Spatial close-kin mark-recapture methods to estimate dispersal parameters and barrier strength for mosquitoes. [PDF]

PLoS Comput Biol
Marshall JM, Yang S, Bennett JB, Filipović I, Rašić G.   +4 more
europepmc   +1 more source

Pickin' up good vibrations: a systematic review of footfall detection and analysis in the realm of wildlife surveying

Wildlife Biology, EarlyView.
Exploration of new wildlife surveying methodologies that leverage advances in sensor technology and machine learning has led to tentative research into the application of seismology techniques. This, most commonly, involves the deployment of a footfall trap – a seismic sensor and data logger customised for wildlife footfall.
Benjamin J. Blackledge, Luigi La Spada, Robert A. Briers, Niamh M. McHugh, Patrick J. C. White   +4 more
wiley   +1 more source

Temporal Variability in Effective Size ( N ̂ e ) Identifies Potential Sources of Discrepancies Between Mark Recapture and Close Kin Mark Recapture Estimates of Population Abundance. [PDF]

Mol Ecol Resour
Ruzzante DE, McCracken GR, Fraser DJ, MacMillan J, Buhariwalla C, Flemming JM.   +5 more
europepmc   +1 more source

Exploring sources of uncertainty in the estimate of waterfowl harvest in the United Kingdom

Wildlife Biology, EarlyView.
There is an urgent need to gather data on harvest rates of waterbirds in Europe to assess the sustainability of hunting. Estimates of total waterbird harvest in the United Kingdom (UK) and the relative harvest of different huntable species come from two separate surveys, the Value of Shooting (PACEC 2014) and National Gamebag Census (NGC), and these ...
Matthew B. Ellis, Hannah M. Lewis, Tom C. Cameron   +2 more
wiley   +1 more source

A Mark-Recapture Approach to Estimating Item Pool Compromise. [PDF]

Appl Psychol Meas
Feinberg RA.
europepmc   +1 more source