A5013595920- Primate Behavior and Ecology
- Wildlife Ecology and Conservation
- Animal Vocal Communication and Behavior
- Child and Animal Learning Development
- Human-Animal Interaction Studies
- Animal Behavior and Reproduction
- Rangeland Management and Livestock Ecology
- Sleep and Wakefulness Research
- Conservation, Biodiversity, and Resource Management
- Children's Rights and Participation
- Wildlife-Road Interactions and Conservation
- Child Nutrition and Water Access
- Circadian rhythm and melatonin
- Sleep and related disorders
- Cambodian History and Society
- Demographic Trends and Gender Preferences
- Multilingual Education and Policy
- Remote Sensing and LiDAR Applications
- Forest Ecology and Biodiversity Studies
- Diaspora, migration, transnational identity
Max Planck Institute of Animal Behavior
2021-2024
University of Konstanz
2021-2024
University of Zurich
2012-2023
University of California, Davis
2023
Association of American Universities
2023
George Washington University
2023
Hudson Institute
2023
Orangutan Information Centre
2012
Orangutans (genus Pongo ) are the largest arboreal mammals, but Bornean orangutans ( P. pygmaeus spp .) also spend time on ground. Here, we investigate ground use among using 32,000 hr of direct focal animal observations from a well‐habituated wild population p. wurmbii living in closed‐canopy swamp forest at Tuanan, Central Kalimantan, Indonesia. Ground did not change with increasing observation individuals, suggesting it was an artifact observer presence. Flanged males spent most (ca. 5%...
As a part of growing up, immature orangutans must acquire vast repertoires skills and knowledge, process that takes several years observational social learning subsequent practice. Adult female male show behavioral differences including sex-specific foraging patterns male-biased dispersal. We investigated how these differing life trajectories affect interest emerging ecological knowledge in immatures. analyzed 15 detailed data on learning, associations, diet 50 immatures (16 females 34...
Abstract As climate change continues to fundamentally alter resource landscapes, the ability flexibly respond spatio-temporal changes in distribution of preferred food sources is increasingly important for overall health and fitness animals living seasonal, variable, and/or changing environments. Here, we investigate effects an uncharacteristically long period fruit scarcity, following widespread thick haze caused by peat forest fires 2015, on behaviour sociality female Bornean orangutans (...
The complex, interconnected, and non-contiguous nature of canopy environments present unique cognitive, locomotor, sensory challenges to their animal inhabitants. Animal movement through forest canopies is constrained; unlike most aquatic or aerial habitats, the three-dimensional space a not fully realized available animals within it. Determining how constraints arboreal habitats shape ecology evolution canopy-dwelling key understanding ecosystems. With emerging technologies, there now...
Sleeping refuges—like other important, scarce and shareable resources—can serve as hotspots for animal interaction, shaping patterns of attraction avoidance. Where sleeping sites are shared, individuals balance the opportunity interaction with new social partners against their need sleep. By expanding network connections within populations, such night-time interactions may have yet largely unexplored, impacts on critical behavioural ecological processes. Here, using GPS tri-axial...
Abstract In many slowly developing mammal species, males reach sexual maturity well before they develop secondary characteristics. Sexually mature male orangutans have exceptionally long periods of developmental arrest. The two morphs been associated with behavioral alternative reproductive tactics, but this interpretation is based on cross‐sectional analyses predominantly Northwest Sumatran populations. Here we present the first longitudinal changes 10 adult that observed in both unflanged...
Abstract The readiness to interact with and explore novel stimuli—i.e., curiosity—is the cornerstone of innovation. Great apes show broad complex innovation repertoires. However, little is known about factors that affect curiosity in wild apes. To shed light on apes’ curiosity, we measured reactions Sumatran orangutans ( Pongo abelii ) an experiment apparatus. Overall, individuals were reluctant touch compared adults, immatures showed higher tendencies (measured through looking durations...
Abstract The readiness to interact with, and explore, novel stimuli – i.e., curiosity are cornerstones of innovation. Great apes show the broadest most complex innovation repertoires. However, little is known about factors that affect in wild apes. To shed light on apes’ curiosity, we measured reactions Sumatran orangutans ( Pongo abelii ) an experimental apparatus. Compared adults, immatures showed higher tendencies visually explore approach apparatus but were more likely signs agitation....
Using data on the iconic orangutan (Pongo spp.), we developed a novel spatiotemporal framework for evaluating conservation investments. We show that around USD 1 billion was invested between 1999 and 2019 into by governments, non-governmental organizations, companies communities. Broken down allocation to different strategies, find habitat protection, patrolling public outreach had greatest return-on-investment maintaining populations. Given variability in threats, land-use opportunity...