Prof. dr. K.R.L. (Karline) Janmaat
Professor in Cognitive Behavioural Ecology
Faculty of Science
Institute for Biodiversity and Ecosystem Dynamics
Visiting address
- Science Park 904
- Room number: C3.209
Postal address
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Postbus 94240
1090 GE Amsterdam
Contact details
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Research
Welcome!
Welcome to my website of the University of Amsterdam.
More detailed information about my research can be found on
my personal website: https://karlinejanmaat.wordpress.com/
illustrations Irene Goede Research Interests
I am a cognitive behavioral ecologist and my main research goal is to understand the evolutionary function and diversity of cognition of individual animals and primates in particular that live in different populations. My personal challenge is to uncover the extent of the cognitive complex skills of animals, such as episodic memory and flexible route planning, and to map the context in which animals use them. I specialize in studying the cognitive strategies that wild primates use in their daily search for food and use observational methods to map the behavior and socio-ecological environment of individual monkeys, apes and humans in multiple populations. I combine these methods with Camera trap, GPS tracking, VR technology and state-of-the art modeling techniques. By implementing my findings in a comparative framework, and by collaborating with field and laboratory researchers and theoretical biologists, I want to increase our understanding of the evolutionary function of foraging cognition and its variation and plasticity. By implementing my knowledge of the daily challenges faced by animals in the natural habitat with observations in ARTIS, I also try to gain a better understanding of the mental well-being of animals in zoos and the effect of this habitat on the development of cognition.
I have supervised and co-supervised the following PhD students
- Simone Dagui Ban
- Haneul Jang
- Bill Loubelo
- Miguel DeGuinea
- Stefano Lucchesi
Check my Youtube channel for interviews about my research
Observing chimpanzees in the rainforest of Tai National Park. Picture made by Ammie Kalan -
Teaching
I am involved in the following courses and other teaching activities:
Bachelor programme Psychobiology
Supervision of BSc theses
Coordinator and teacher in the following courses in the Minor track Evolutionary Psychobiology:
- Evolutionairy Psychobiology
- Evolutionary Anthropology
Bachelor program Cognition, Language and Communication
Teaching in Collegetour
Bachelor and Master programme Biology and Biological Sciences
Supervision of BSc and MSc theses
Teaching in the course Neurobiologie en gedrag
If you are interested in my research aims and would like to do a student research project in the field, ARTIS or with existing data on the behavour of non-human or human animals feel free to contact me and send me a CV and a motivation letter.
illustration Irene Goede -
Student projects
If you are interested in my research aims and would like to do a student research project starting a study in the field, ARTIS or with existing data on the cognitive behavour of non-human or human animals feel free to contact me and send me a CV and a motivation letter.
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Publications
2023
Chittar, C. R., Jang, H., Samuni, L., Lewis, J., Honing, H., van Loon, E. E., & Janmaat, K. R. L. (2023). Music production and its role in coalition signaling during foraging contexts in a hunter-gatherer society. Frontiers in Psychology, 14, Article 1218394. https://doi.org/10.3389/fpsyg.2023.1218394 [details]- Janmaat, K. R. L. (2023). Cognition, foraging, and energetics in extant and extinct primates. Frontiers in Ecology and Evolution. https://doi.org/10.3389/fevo.2023.1192061
- Janmaat, K. R. L. (2023). Development of embodied capital: diet composition, foraging skills, and botanical knowledge of forager children in the Congo Basin. Frontiers in Ecology and Evolution. https://doi.org/10.3389/fevo.2023.935987
2022
- Allritz, M., Call, J., Schweller, K., McEwen, E. S., de Guinea, M., Janmaat, K. R. L., Menzel, C. R., & Dolins, F. L. (2022). Chimpanzees (Pan troglodytes) navigate to find hidden fruit in a virtual environment. Science Advances, 8(25), Article eabm4754. https://doi.org/10.1126/sciadv.abm4754
- Jang, H., Janmaat, K. R. L., Kandza, V., & Boyette, A. H. (2022). Girls in early childhood increase food returns of nursing women during subsistence activities of the BaYaka in the Republic of Congo. Proceedings of the Royal Society B: Biological Sciences, 289(1987), Article 20221407. https://doi.org/10.1098/rspb.2022.1407
2021
- Janmaat, K. R. L., de Guinea, M., Collet, J., Byrne, R. W., Robira, B., van Loon, E., Jang, H., Biro, D., Ramos-Fernández, G., Ross, C., Presotto, A., Allritz, M., Alavi, S., & van Belle, S. (2021). Using natural travel paths to infer and compare primate cognition in the wild. iScience, 24(4), Article 102343. https://doi.org/10.1016/j.isci.2021.102343 [details]
- Ozturk, K. C. D., Egas, M., & Janmaat, K. R. L. (2021). Mandrills learn two-day time intervals in a naturalistic foraging situation. Animal cognition, 24, 569–582 . https://doi.org/10.1007/s10071-020-01451-7 [details]
- de Guinea, M., Estrada, A., Janmaat, K. R. M., Nekaris, K. A. I., & Van Belle, S. (2021). Disentangling the importance of social and ecological information in goal-directed movements in a wild primate. Animal behaviour, 173, 41-51. https://doi.org/10.1016/j.anbehav.2020.12.017
2020
- Lucchesi, S., Cheng, L., Janmaat, K., Mundry, R., Pisor, A., & Surbeck, M. (2020). Beyond the group: how food, mates, and group size influence intergroup encounters in wild bonobos. Behavioral Ecology, 31(2), 519-532. https://doi.org/10.1093/beheco/arz214 [details]
2019
- Jang, H., Boesch, C., Mundry, R., Ban, S. D., & Janmaat, K. R. L. (2019). Travel linearity and speed of human foragers and chimpanzees during their daily search for food in tropical rainforests. Scientific Reports, 9, Article 11066. https://doi.org/10.1038/s41598-019-47247-9 [details]
- Jang, H., Boesch, C., Mundry, R., Kandza, V., & Janmaat, K. R. L. (2019). Sun, age and test location affect spatial orientation in human foragers in rainforests. Proceedings of the Royal Society B-Biological Sciences, 286(1907), Article 20190934. https://doi.org/10.1098/rspb.2019.0934 [details]
- Janmaat, K. R. L. (2019). Temporal cognition in Taï chimpanzees. In C. Boesch, R. Wittig, C. Crockford, L. Vigilant, T. Deschner, & F. Leendertz (Eds.), The chimpanzees of the Taï forest: 40 years of research (pp. 451-466). Cambridge University Press. https://doi.org/10.1017/9781108674218.029 [details]
- Janmaat, K. R. L. (2019). What animals do not do or fail to find: A novel observational approach for studying cognition in the wild. EVOLUTIONARY ANTHROPOLOGY, 28(6), 303-320. https://doi.org/10.1002/evan.21794 [details]
- Janmaat, K. R. L., & Byrne, R. (2019). Why Taï mangabeys do not use tools to crack nuts like sympatric-living chimpanzees: a cognitive limitation on monkey feeding ecology. In C. Boesch, R. Wittig, C. Crockford, L. Vigilant, T. Deschner, & F. Leendertz (Eds.), The chimpanzees of the Taï forest: 40 years of research (pp. 261-271). Cambridge University Press. https://doi.org/10.1017/9781108674218.017 [details]
2018
- Adamescu, G. S., Plumptre, A. J., Abernethy, K. A., Polansky, L., Bush, E. R., Chapman, C. A., Shoo, L. P., Fayolle, A., Janmaat, K. R. L., Robbins, M. M., Ndangalasi, H. J., Cordeiro, N. J., Gilby, I. C., Wittig, R. M., Breuer, T., Breuer-Ndoundou Hockemba, M., Sanz, C. M., Morgan, D. B., Pusey, A. E., ... Beale, C. M. (2018). Annual cycles are the most common reproductive strategy in African tropical tree communities. Biotropica, 50(3), 418-430. https://doi.org/10.1111/btp.12561 [details]
- Van Pinxteren, B. O. C. M., Sirianni, G., Gratton, P., Després-Einspenner, M-L., Egas, M., Kühl, H., Lapuente, J., Meier, A. C., & Janmaat, K. R. L. (2018). Sooty mangabeys use auditory cues to scavenge on nuts cracked by chimpanzees and red river hogs: An investigation of inter-specific interactions around tropical nut trees. American Journal of Primatology, 80(8), Article e22895. https://doi.org/10.1002/ajp.22895 [details]
2016
- Ban, S. D., Boesch, C., N'Guessan, A., Kouakou N'Goran, E., Tako, A., & Janmaat, K. R. L. (2016). Taï chimpanzees change their travel direction for rare feeding trees providing fatty fruits. Animal behaviour, 118, 135-147. https://doi.org/10.1016/j.anbehav.2016.05.014
2014
- Ban, S. D., Boesch, C., & Janmaat, K. R. L. (2014). Taï chimpanzees anticipate revisiting high-valued fruit trees from further distances. Animal cognition, 17(6), 1353-1364. https://doi.org/10.1007/s10071-014-0771-y
- Janmaat, K. R. L., Polansky, L., Ban, S. D., & Boesch, C. (2014). Wild chimpanzees plan their breakfast time, type, and location. Proceedings of the National Academy of Sciences of the United States of America, 111(46), 16343-16348. https://doi.org/10.1073/pnas.1407524111
2013
- Janmaat, K. R. L., Ban, S. D., & Boesch, C. (2013). Chimpanzees use long-term spatial memory to monitor large fruit trees and remember feeding experiences across seasons. Animal behaviour, 86(6), 1183-1205. https://doi.org/10.1016/j.anbehav.2013.09.021
- Janmaat, K. R. L., Ban, S. D., & Boesch, C. (2013). Taï chimpanzees use botanical skills to discover fruit: What we can learn from their mistakes. Animal cognition, 16(6), 851-860. https://doi.org/10.1007/s10071-013-0617-z
2012
- Janmaat, K. R. L., Chapman, C. A., Meijer, R., & Zuberbühler, K. (2012). The use of fruiting synchrony by foraging mangabey monkeys: A 'simple tool' to find fruit. Animal cognition, 15(1), 83-96. https://doi.org/10.1007/s10071-011-0435-0
2010
- Janmaat, K. R. L., & Chancellor, R. L. (2010). Exploring New Areas: How Important is Long-Term Spatial Memory for Mangabey (Lophocebus albigena johnstonii) Foraging Efficiency? International Journal of Primatology, 31(5), 863-886. https://doi.org/10.1007/s10764-010-9433-3
- Janmaat, K. R. L., & Zuberbühler, K. (2010). Foraging cognition in nonhuman primates. In A. A. Ghazanfar, & M. Platt (Eds.), Primate neuroethology (pp. 64-83). Oxford University.
2009
- Janmaat, K. R. L., Olupot, W., Chancellor, R. L., Arlet, M. E., & Waser, P. M. (2009). Long-term site fidelity and individual home range shifts in lophocebus albigena. International Journal of Primatology, 30(3), 443-466. https://doi.org/10.1007/s10764-009-9352-3
2006
- Janmaat, K. R. L., Byrne, R. W., & Zuberbühler, K. (2006). Evidence for a spatial memory of fruiting states of rainforest trees in wild mangabeys. Animal behaviour, 72(4), 797-807. https://doi.org/10.1016/j.anbehav.2005.12.009
- Janmaat, K. R. L., Byrne, R. W., & Zuberbühler, K. (2006). Primates Take Weather into Account when Searching for Fruits. Current Biology, 16(12), 1232-1237. https://doi.org/10.1016/j.cub.2006.04.031
2019
- Wasserman, M. D., Thompson, I., Chester, E., & Janmaat, K. (2019). Presence of Xenoestrogens in the Hunter-Gatherer Diet of Mbendjele BaYaka from Republic of Congo. American Journal of Physical Anthropology, 168(S68), 263-263. https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajpa.23802
2016
- Janmaat, K. R. L., Boesch, C., Byrne, R., Chapman, C. A., Goné Bi, Z. B., Head, J. S., Robbins, M. M., Wrangham, R. W., & Polansky, L. (2016). Spatio-temporal complexity of chimpanzee food: How cognitive adaptations can counteract the ephemeral nature of ripe fruit. American Journal of Primatology, 78(6), 626-645. https://doi.org/10.1002/ajp.22527
2012
- Janmaat, K. R. L. (2012). Do Tai chimpanzees use botanical knowledge in their search for fruit in large scale space. Cognitive Processing International Quartely of Cognitive Sciences), 13.
2022
- Jang, H., Janmaat, K. R. L., Kandza, V. & Boyette, A. (12-11-2022). Girls in early childhood increase food returns of nursing women during subsistence activities of the BaYaka in the Republic of Congo. DRYAD. https://doi.org/10.5061/dryad.rfj6q57dh
2019
- Lucchesi, S., Surbeck, M., Janmaat, K., Cheng, L., Pisor, A. & Mundry, R. (2019). Beyond the group: how food, mates and group size influence inter-group encounters in wild bonobos. DRYAD. https://doi.org/10.5061/dryad.hqbzkh1bq
- Jang, H., Kandza, V., Boesch, C., Mundry, R., Janmaat, K. R. L. & Boesch, C. (2019). Data pointing tests from Sun, age and test location affect spatial orientation in human foragers in rainforests. Figshare. https://doi.org/10.6084/m9.figshare.8960588.v1
- Jang, H., Kandza, V., Boesch, C., Mundry, R., Janmaat, K. R. L. & Boesch, C. (2019). Data pointing tests from Sun, age and test location affect spatial orientation in human foragers in rainforests.. The Royal Society. https://doi.org/10.6084/m9.figshare.8850683.v2
- Jang, H., Kandza, V., Boesch, C., Mundry, R. & Janmaat, K. R. L. (2019). Data pointing tests from Sun, age and test location affect spatial orientation in human foragers in rainforests. The Royal Society. https://doi.org/10.6084/m9.figshare.8850683.v1
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Ancillary activities
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Leiden Universiteit
Bijzonder Hoogleraar Cognitieve gedragsecologie
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Leiden Universiteit
Chittar, C. R., Jang, H., Samuni, L., Lewis, J., Honing, H., van Loon, E. E., & Janmaat, K. R. L. (2023). Music production and its role in coalition signaling during foraging contexts in a hunter-gatherer society. Frontiers in Psychology, 14, Article 1218394.