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Análisis de los métodos usados para estimar la abundancia de las poblaciones silvestres de cocodrilianos (Crocodylia) en México

06/2007;

ABSTRACT Analysis of the used methods to estimate the abundance of the w i l d p o p u l a t i o n s o f crocodilians (Crocodylia) in Mexico. We analyzed information about methods used for estimate the crocodilian wildlife population abundance in Mexico. The purpose was determine if the methods used for estimate the crocodilian wildlife population abundance are suitable on basis its advantages and disadvantages and suggest the standardization of methods for the quantification across the time. Twenty-seven papers written until beginning of the year 2007 were c o m p i l e d ; 9 2 . 6 % u s e d t h e conventional method of spotlight counts, and 7.4% were studies that used the capture-recapture method using the geometric estimator of the capture frequency model. Of the 27 references, 37% were thesis, 29.7% were papers in popular science magazines, 25.9% were peer reviewed papers on crocodilians, 3.7% was an abstract in meeting proceedings and 3.7% was a technical report. We found that all studies had duration of one year approximately and there was variation of methods between different localities. With this Résumé

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