About
19
Publications
3,812
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
417
Citations
Introduction
Current institution
Publications
Publications (19)
Seasonal availability of resources can influence the timing and success of reproduction in primates. This study examines the annual pattern of conceptions, mid-term (13 weeks) and full-term (26 weeks) pregnancy losses, births, and infant survivorship of the Critically Endangered cotton-top tamarin (Saguinus oedipus) at Proyecto Tití's long-term fie...
Understanding of animal responses to dynamic resource landscapes is based largely on research on temperate species with small body sizes and fast life histories. We studied a large, tropical mammal with an extremely slow life history, the Western Bornean orangutan (Pongo pygmaeus wurmbii), across a heterogeneous natural landscape encompassing seven...
Folivorous primates have long been assumed to experience food competition less acutely than frugivores due to their ability to eat leaves, an abundant resource in most forest systems. Consequently, the behavioural responses of leaf-eating primates to variation in food availability are less well characterised than those of frugivores. Recent empiric...
Engaging children in developing countries to care for wildlife, and to make appropriate choices to protect wildlife, are challenging tasks. Proyecto Tití works to conserve the cotton-top tamarin (Saguinus oedipus), a critically endangered endemic monkey from Colombia, using a multi-disciplinary approach that focuses on scientific research, communit...
Multiple ecological factors have been hypothesized to influence primate sleeping site selection. Testing multiple hypotheses about sleeping site selection permits examination of the relative strength of distinct ecological factors and expands our ability to understand how selection pressures influence primate sleeping behavior. Here we examine how...
Effectively characterizing primate diets is fundamental to understanding primate behavior, ecology and morphology. Examining temporal variation in a species’ diet, as well as comparing the responses of different species to variation in resource availability, can enhance understanding of the evolution of morphology and socioecology. In this study, w...
List of leaf monkey feeding observations by genus and plant part consumed.
(CSV)
Summary of fruit availability, temperature and rainfall during three month blocks for gibbons and leaf monkeys over the course of the study period.
Raw counts of stems are based on reproductive status using the following definitions: B: containing flower buds (i.e., developing flowers visible, but no flowers at anthesis); F: mature flowers (i.e., a...
Selectivity table for gibbons and leaf monkeys.
Larger selectivity values indicate preferred genera, whereas values closer to zero indicate less preferred genera. Use values are the total number of feeding observations on genus i. Availability values were calculated as the total number of stems of genus i that were observed to fruit during the stud...
List of gibbon feeding observations by genus and plant part consumed.
(CSV)
Complete list of models used in AICc model comparison.
Each model represents a specific prediction (e.g. model 1: gibbons will feed more on figs when there is low fruit availability).
(DOCX)
Numerous animals have declining populations due to habitat loss, illegal wildlife trade, and climate change. The cotton-top tamarin (Saguinus oedipus) is a Critically Endangered primate species, endemic to northwest Colombia, threatened by deforestation and illegal trade. In order to assess the current state of this species, we analyzed changes in...
Survey Data for Cotton-top Tamarins in 2012
(XLSX)
Survey Data for Cotton-top Tamarins in 2005
(XLSX)
Habitat Assessment Data from 2005 and 2012
(XLSX)
Understanding the ecological interactions between plant reproductive strategies and frugivore feeding behavior can offer insight into the maintenance of tropical forest biodiversity. We examined the role of plant ecological and phenological characteristics in influencing fruit consumption by the White-bearded gibbon (Hylobates albibarbis) in Gunung...
Primates spend at least half their lives sleeping; hence, sleeping site selection can have important effects on behavior and fitness. As proboscis monkeys (Nasalis larvatus) often sleep along rivers and form bands (aggregations of one male groups) at their sleeping sites, understanding sleeping site selection may shed light on two unusual aspects o...
Physical anthropologists use the term "fallback foods" to denote resources of relatively poor nutritional quality that become particularly important dietary components during periods when preferred foods are scarce. Fallback foods are becoming increasingly invoked as key selective forces that determine masticatory and digestive anatomy, influence g...
