Table 1. Estimated plant richness in the faecal samples of E. spelaea of which the number of observed species is 55, the number of faecal sample is 10 and the total number of incidences is 185.

Species richness model	Estimate	Standard error	Lower limit of 95% confidence interval	Upper limit of 95% confidence interval
Homogenous modela	60.324	2.996	56.904	69.882
Chao2b	66.604	7.040	58.873	89.766
Chao2-bcc	65.260	6.342	58.365	86.286
iChao2d	68.961	4.356	62.682	80.372

Notes:

^aThis model assumes that all species have same incidence of detection probabilities.

^bThis approach uses the frequencies of uniques and duplicates to estimate the number of undetected species.

^cA bias-corrected form for the Chao2 estimator.

^dImproved Chao2 estimator.