Towards Standardisation of Population Estimates: Defecation Rates of Elephants Should be Assessed using a Rainfall Model

Jörn Theuerkauf; Roman Gula

doi:10.5735/086.047.0603

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Jörn Theuerkauf,^1,2 Roman Gula^1,2

¹Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, PL-00-679 Warsaw, Poland
²(e-mails: *jtheuer@miiz.waw.pl, **rgula@miiz.waw.pl)

Abstract

Daily defecation rate is an important variable in density estimation of African (Loxodonta qfricana) and Asian (Elephas maximus) elephants. However, there has been no attempt to construct a general model that predicts defecation rates. By comparing 16 published studies, we found that annual and seasonal daily defecation rates increased with annual rainfall following a power regression model. We recommend calculating defecation rates based on the regressions from our meta-analysis, rather than using a defecation rate from any single study.

Citation Download Citation

Jörn Theuerkauf and Roman Gula "Towards Standardisation of Population Estimates: Defecation Rates of Elephants Should be Assessed using a Rainfall Model," Annales Zoologici Fennici 47(6), 398-402, (1 December 2010). https://doi.org/10.5735/086.047.0603

Received: 4 July 2010; Accepted: 1 September 2010; Published: 1 December 2010

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