Results 121 to 130 of about 9,506 (240)
Exploring mark-resighting-recovery models to study savannah tree demographics [PDF]
Animal Biodiversity and Conservation, 2004 Despite their sessile nature, juvenile trees in savannah ecosystems are not always easy to encounter. Here, the remedy of choice in animal studies, capture-recapture modelling, is evaluated with respect to plants.
Lahoreau, G., Gignoux, J., Julliard, R.
doaj
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
Genotyping validates the efficacy of photographic identification in a capture-mark-recapture study based on the head scale patterns of the prairie lizard (Sceloporus consobrinus). [PDF]
Ecol Evol, 2020 Tomke SA, Kellner CJ.
europepmc +1 more source
Phenology of migrating game birds in Italy based on citizen science data
Wildlife Biology, EarlyView.Studying the timing of the seasonal movements of migratory birds, known as migration phenology, is crucial for managing and conserving migratory bird populations. This is particularly important for migratory game bird populations in Europe because, according to the EU, migratory birds should not be hunted during their breeding season or during return ...
Susan E. McKinlay +10 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 +7 more
wiley +1 more source
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 +4 more
wiley +1 more source
Fishing gear experiments in Finland [PDF]
, 1981 A comparison of some different European methods of estimating the numbers of fish in a lake using different fishing gear is described. The different gears used were 1. surface trawl used by night 2. bottom trawl used by day 3.
Bagenal, T.B.
core
Estimating demographic parameters using a combination of known-fate and open N-mixture models
, 2015 1. Accurate estimates of demographic parameters are required to infer appropriate ecological relationships and inform management actions. Recently developed N-mixture models use count data from unmarked individuals to estimate demographic parameters, but
Adams, Layne G. +3 more
core +1 more source
Wildlife Society Bulletin, EarlyView.We used drone‐based radiotelemetry and multispectral imagery to estimate detection and survival probabilities of blue‐winged teal broods in Saskatchewan, Canada. Weekly brood survival probabilities, estimated via Cormack‐Jolly‐Seber models, increased with age and were comparable between drone methods.
Grant A. Rhodes +5 more
wiley +1 more source
A comparison of abundance estimators for small mammal populations
Zoologia (Curitiba), 2013 A major difficulty in the application of probabilistic models to estimations of mammal abundance is obtaining a data set that meets all of the assumptions of the model.
Marcelle Pacheco +5 more
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