Publications & Presentations
Peer-Reviewed Journal Articles
Kalan AK, Kulik L, Arandjelovic M, et al. (2020). Environmental variability supports chimpanzee behavioral diversity. Nature Communications https://doi.org/10.1038/s41467-020-18176-3
Boesch C, Kalan AK, Mundry R, et al. (2020). Chimpanzee ethnography reveals unexpected cultural diversity. Nature Human Behaviour 4: 910-916. https://doi.org/10.1038/s41562-020-0890-1
Kalan AK, Carmignani E, Kronland-Martinet R, Ystad S, Aramaki M. (2019). Chimpanzees use trees with a resonant timbre for accumulative stone throwing. Biology Letters 15 (12), 20190747. https://doi.org/10.1098/rsbl.2019.0747
Kühl HS*, Boesch C, Kulik L, …(49 authors), Kalan AK* (2019). Inclusive chimpanzee conservation- Response. Science 364: 1040-1041. https://doi.org/10.1126/science.aax6339 (*shared corresponding author)
Grawunder S, Crockford C, Kalan AK, Clay Z, Stoessel A, Hohmann G. (2019). Response to Garcia and Dunn: No evidence that maximum fundamental frequency reflects selection for signal diminution in bonobos. Current Biology 29: R734-R735. https://doi.org/10.1016/j.cub.2019.06.023
Kühl HS*, Boesch C, Kulik L, .…(77 authors), Kalan AK* (2019). Human disturbance erodes chimpanzee behavioral diversity. Science 363: 1453-1455. https://doi.org/10.1126/science.aau4532 (*shared corresponding author) pdf
Kalan AK, Hohmann G, Arandjelovic M, et al. (2019). Novelty response of wild African apes to camera-traps. Current Biology 29: 1211-1217. https://doi.org/10.1016/j.cub.2019.02.024 pdf
Grawunder S, Crockford C, Clay Z, Kalan AK, Stevens JMG, Stoessel A, Hohmann G. (2018). Higher fundamental frequency in bonobos is explained by laryngeal morphology, not body size. Current Biology 28: R1188-R1189. https://doi.org/10.1016/j.cub.2018.09.030 pdf
van Casteren A, Oelze VM, Angedakin S, Kalan AK, Kambi M, Boesch C, Kühl HS, Langergraber KE, Piel AK, Stewart F, Kupczik K.(2018). Food mechanical properties and isotopic signatures in forest versus savannah dwelling eastern chimpanzees. Nature Communications Biology. https://doi.org/10.1038/s42003-018-0115-6 pdf
Deichmann J, Acevedo Charry O, Barclay L, Burivalova Z, Campos Cerqueira M, d’Horta F, Game E, Gottesman B, Hart P, Kalan AK, Linke S, Do Nascimento L, Pijanowski B, Staaterman E, Aide TM. (2018). It’s time to listen: there is much to be learned from the sounds of tropical ecosystems. Biotropica, 50: 713-718. https://onlinelibrary.wiley.com/doi/full/10.1111/btp.12593 pdf
Kalan AK, Boesch C. (2018). Re-emergence of the leaf-clip gesture during an alpha takeover affects variation in male chimpanzee loud calls. PeerJ 6: e5079. https://doi.org/10.7717/peerj.5079 pdf
Haslam M, Hernandez-Aguilar RA, Proffitt T, Arroyo A, Falotico T, Fragaszy D, Gumert M, Huffman M, Kalan AK et al. (2017). Primate archaeology evolves. Nature Ecology and Evolution, 1: 1431-1437. https://doi.org/10.1038/s41559-017-0286-4 pdf
Boesch C*, Kalan AK*, Agbor A, Arandjelovic M, Dieguez P, Lapeyre V, Kühl HS. (2017). Chimpanzees routinely fish for algae with tools during the dry season in Bakoun, Guinea. American Journal of Primatology. 79(3): 1-7. https://doi.org/10.1002/ajp.22613 (shared first & corresponding author) pdf
Kühl HS, Kalan AK*, Arandjelovic M et al. (2016). Chimpanzee accumulative stone throwing. Scientific Reports, 6: e22219. https://doi.org/10.1038/srep22219 (corresponding author) pdf
Kalan AK, Piel AK, Mundry R, Wittig RM, Boesch C, Kühl HS. (2016). Passive acoustic monitoring reveals group ranging and territory use: A case study of wild chimpanzees (Pan troglodytes). Frontiers in Zoology, 13: 34. https://doi.org/10.1186/s12983-016-0167-8 pdf
Kalan AK, Boesch C. (2015). Audience effects in chimpanzee food calls and their potential for recruiting others. Behavioral Ecology and Sociobiology, 69: 1701-1712. https://doi.org/10.1007/s00265-015-1982-1 pdf
Heinicke S, Kalan AK, Wagner OJJ, et al. (2015). Assessing the performance of a semi-automated acoustic monitoring system for primates. Methods in Ecology and Evolution. https://doi.org/10.1111/2041-210X.12384 pdf
Kalan AK, Mundry R, Wagner OJJ, Heinicke S, Boesch C, Kühl HS. (2015). Towards the automated detection and occupancy estimation of primates using passive acoustic monitoring. Ecological Indicators, 54: 217-226. https://doi.org/10.1016/j.ecolind.2015.02.023 pdf
Kalan AK, Mundry R, Boesch C. (2015). Wild chimpanzees modify food call structure with respect to tree size for a particular fruit species. Animal Behaviour, 101:1-9. https://doi.org/10.1016/j.anbehav.2014.12.011 pdf
Kalan AK, Madzoké B, Rainey H. (2010). A preliminary report on feeding and nesting behavior of swamp gorillas in the Lac Télé Community Reserve. Mammalia, 74: 439-442. https://doi.org/10.1515/mamm.2010.047 pdf
Kalan AK, Rainey H. (2009). Hand-clapping as a communicative gesture by wild female swamp gorillas. Primates, 50: 273-275. https://doi.org/10.1007/s10329-009-0130-9 pdf
Kalan AK (2019) Evidence for sexual dimorphism in chimpanzee vocalizations: A comparison of male and female call production and acoustic parameters. In: Celebrating 40 Years of Research at the Taï Chimpanzee Project. Eds. Boesch C, Wittig R, Crockford C, Vigilant L, Deschner T & Leendertz F.
Kalan AK, Pika S. (October 21-22, 2019) Cultural communication in wild great apes: what might we learn about the cognitive benefits of language? Invited presentation for workshop on The Cognitive Benefits of Language- an Evolutionary Perspective, University of Osnabrück, Osnabrück, Germany.
Kalan AK (October 8, 2019) Integrating culture and communication in wild great apes. Invited presentation at the Anthropological Institute and Museum, University of Zürich, Zürich, Switzerland.
Kalan AK (September 9, 2019) Another dimension to primate conservation: Human impact reduces behavioural diversity in wild chimpanzees. Presentation at the Joint Conference of the European Primatological Society and the Primate Society of Great Britain. Oxford, UK.
Whiten A, Arandjelovic M, Boesch C, Brakes P, Kalan AK, Kühl HS, Robbins MM, Rutz C. (September 9, 2019). Primate cultures and conservation. Poster at the Joint Conference of the European Primatological Society and the Primate Society of Great Britain. Oxford, UK.
Kalan AK, Carmignani E, Kronland-Martinet R, Ystad S, Chatron J, Aramaki M. (February 14, 2019). Do chimpanzees select trees with a resonant timbre for accumulative stone throwing? Poster at the 16th Conference of the German Society of Primatologists. Göttingen, Germany.
Kalan AK (September 18, 2018) Great ape culture and communication. Invited presentation at the DFG Center for Advanced Studies “Words, Bones, Genes, Tools”, University of Tübingen, Tübingen, Germany.
Kalan AK (September 27, 2017). Passive acoustic monitoring of forest primates. Presentation at the Bio-logging Symposium workshop on Animal Communication and Movement. Konstanz, Germany.
Kalan AK, Piel A, Heinicke S, Lukashevich H, Mundry R, Wagner O, Wittig R, Boesch C, Kühl HS. (August 21-27, 2016). Detecting presence and group ranging using passive acoustic monitoring. Presentation in a symposium on passive acoustic monitoring at the Joint Conference of the International Primatological Society and the American Society of Primatologists. Chicago, IL USA.
Arandjelovic M, Stephens CR, McCarthy MS, Dieguez P, Kalan AK, Maldonado N, Boesch C, Kühl HS. (August 18-20, 2016). Chimp&See: an online citizen science platform for large-scale, remote video camera trap annotation of chimpanzee behaviour, demography and individual identification. Poster at the Chimpanzees in Context Symposium: Understanding Chimpanzees IV, Chicago, IL USA. PeerJ Preprints 4:e1792v1
Kalan AK, Piel A, Heinicke S, Lukashevich H, Mundry R, Wagner O, Wittig R, Boesch C, Kühl HS. (July 4-8, 2016). Passive acoustic monitoring (PAM) of primates: progress and challenges of automated methods. Presentation at the 2016 GEO BON Open Science Conference and All Hands Meeting. Leipzig, Germany.
Kalan AK, Kühl HS, Arandjelovic M, Boesch C. (June 27-28, 2016). Chimpanzee accumulative stone throwing. Invited presentation for the 2nd Primate Archaeology Meeting, Oxford University, Oxford UK.
Kalan AK, Mundry R, Wagner O, Heinicke S, Boesch C, Kühl HS. (August 2-6, 2015). Towards the automated detection of primates using passive acoustic monitoring: progress and challenges. Presentation at the 27th International Congress for Conservation Biology and the 4th European Congress for Conservation Biology. Montpellier, France.
Kalan AK, Mundry R, Boesch C. (February 11-13, 2015). Chimpanzee food calls: the effects of socio-ecological context on structure and production. Presentation at the 14th Conference of the Gesellschaft für Primatologie. Leipzig, Germany. (1st prize for student presentation)
Kalan AK, Boesch C. (December 2-3, 2013). A complex form of functional reference in wild chimpanzee food calls. Presentation at the 1st European Student Conference on Behaviour and Cognition, Göttingen, Germany
Kalan AK, Boesch C. (September 10-14, 2013). Wild chimpanzees modify food calls with respect to type and quantity. Presentation at the 5th Congress of the European Federation for Primatology. Antwerp, Belgium
Kalan AK, Wagner OJJ, Mundry R, Kühl HS. (February 11, 2013). Passive acoustic monitoring of primates in Taï forest: a novel approach. Invited presentation for Primate Conservation Seminar Series at Oxford Brookes University, Oxford UK