Abstract
IN any census of an animal population a number of individuals may remain undiscovered and this makes the estimation of population size difficult. Various statistical procedures may be used to overcome this problem1,2, but these methods usually require the identification of the individuals: that is, that animals revealed during one count should be recognized during other counts. To our knowledge there is published only one method3 for estimation of the efficiency of a survey and the size of populations containing unidentified individuals, but the validity of this method has been questioned4.
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References
The Wildlife Society, second ed. (edit. by Mosby, H. S.) (1963).
Seierstad, S., Seierstad, A., and Mysterud, I., Nature, 206, 22 (1965).
Palmgren, P., Acta Zool. Fennica, 7, 219 (1930).
Enemar, A., Vår Fågelv., suppl. 2, 29 (1959).
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SEIERSTAD, S., SEIERSTAD, A. & MYSTERUD, I. Estimation of Survey Efficiency for Animal Populations with Unidentifiable Individuals. Nature 213, 524–525 (1967). https://doi.org/10.1038/213524a0
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DOI: https://doi.org/10.1038/213524a0
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