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Table 1 Identification errors made in the field affecting the total number of individuals in Tuanan

From: Variation in developmental arrest among male orangutans: a comparison between a Sumatran and a Bornean population

 

Flanged males

Unflanged males

Visually identified and confirmed by genetic analysis

20

9

Conservatively split in the field, genetically confirmed one individual

4

2

Incorrectly split in the field, genetically shown to be the same individual

1

2

Wrongly lumped in the field, genetically shown to be separate individuals

2

0

Total balance

Underestimated by 1

Overestimated by 2