2 files

Population density of titi monkeys (Plecturocebus discolor) in Yasuní National Park, Ecuador

posted on 10.03.2021, 16:21 authored by Sarah PapworthSarah Papworth
Dataset collected in 2010 using distance sampling methods to calculate the population density of titi monkeys (Plecturocebus discolor, formerly Callicebus discolor) around Estación Científica Yasuní (ECY) in the Ecuadorian Amazon (-0.67S, -76.40W).

Census data included as a CSV file, and information on dataset included in a README file. Dataset consists of titi monkey loud chorus responses to 68 playbacks of a loud chorus around the trail system of ECY.

Population density estimated using using Distance 6.0 with a hazard-rate key function and two cosine adjustments. Population density is estimated as 8.7±SE1.4 groups per km2, with a 95% confidence interval of 6 – 12 groups.

Data used in:
S Papworth (2012) Small scale human-primate behavioural interactions in Amazonian Ecuador. PhD thesis, Imperial College London (https://doi.org/10.25560/10616).
A Salcedo, M Mejia, K Slocombe, S Papworth (2014) Two case studies using playbacks to census neotropical primates: Callicebus discolor and Alouatta palliata. Neotropical Primates 21(2): 201-204 (https://doi.org/10.1896/044.021.0209).


Natural Environment Research Council and Economical and Social Research Council interdisciplinary studentship 2008-2012.


Date Created


Date Available


File Formats

.csv .txt


Sarah Papworth