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Do pellet counts index white-tailed deer numbers and population change? a comment



Do pellet counts index white-tailed deer numbers and population change? a comment



Journal of Wildlife Management 56.3: 611-612



Fuller (1991) concluded that pellet group counts do not index white-tailed deer (Odocoileus virginianus ) number based on lack of correlation between 5 years of pellet counts and corresponding aerial surveys; however, this conclusion was drawn without knowing the true deer density. His conclusion is based on accepting a null hypothesis from an analysis with negligible power (1 - beta < 0.25). From Monte Carlo simulations based on his data, I estimate that the a Type II error (accepting H sub(o) when it is false) rate of 77% when a perfect linear relationship exists between pellet counts and aerial surveys, and a 20% chance of observing a correlation as low or lower than he observed. Although Fuller's conclusion may be correct, his data and analysis do not support his conclusion.

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Accession: 037335413

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DOI: 10.2307/3808879



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