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Influence of Light and Weather on Observability of Iowa Deer

Michael D. Zagata and Arnold O. Haugen
The Journal of Wildlife Management
Vol. 38, No. 2 (Apr., 1974), pp. 220-228
Published by: Wiley on behalf of the Wildlife Society
DOI: 10.2307/3800727
Stable URL: http://www.jstor.org/stable/3800727
Page Count: 9
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Influence of Light and Weather on Observability of Iowa Deer
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Abstract

The individual and combined effects of light intensity and various weather phenomena on numbers of white-tailed deer (Odocoileus virginianus) seen per observation were correlated by multiple-regression analysis using the model with deer sighted (adults, juveniles, anterless, antlered, and unknown) versus sunset or sunrise time, time of sighting, location, lunar phase, minimum daily temperature, maximum daily temperature, wind direction, wind velocity, nebulosity, type of precipitation, amount of precipitation, type of ground cover, and amount of snow on the ground. Observations were made from a blind during crepuscular periods from September through May. A significant relationship (P < 0.05) to the number of deer sighted per sighting existed with the effects of: time of sunrise, time of sunset, maximum temperature, minimum temperature, wind direction, wind velocity, and ground cover. These effects were not the same for all age and sex classes, and in some instances, different effects were observed for the dawn and dusk periods.

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