Testing density estimators on a fallow deer population of known size

Article Abstract:

A study was made to compare two estimators of population number and one index of population trend by directly observing a known number of a fallow deer population. Phases of population increase, stability and decrease were likewise examined. From the two estimators, reasonably unbiased estimates of absolute population size were determined. However, each measure exhibited some bias. Meanwhile, a kilometric index based on highly standardized methods is an excellent and inexpensive method to use in analyzing population trend.

Fallow deer, Population density

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Use of vocalizations to estimate population size of roe deer

Article Abstract:

The accuracy and precision of the vocalization frequency (VF) method for estimating the size of roe deer populations was evaluated and compared with the capture-mark-recapture method. Results suggested that the VF method provides estimates of absolute population size at low cost and with little material investment because physical capture and marking of animals is not necessary. The VF method may have potential applications for population estimation of other species of large mammals.

Measurement, Mammal populations, Sound production by animals, Deer, Animal vocalizations

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