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Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes)
BACKGROUND: Assessing the range and territories of wild mammals traditionally requires years of data collection and often involves directly following individuals or using tracking devices. Indirect and non-invasive methods of monitoring wildlife have therefore emerged as attractive alternatives due...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4977853/ https://www.ncbi.nlm.nih.gov/pubmed/27507999 http://dx.doi.org/10.1186/s12983-016-0167-8 |
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author | Kalan, Ammie K. Piel, Alex K. Mundry, Roger Wittig, Roman M. Boesch, Christophe Kühl, Hjalmar S. |
author_facet | Kalan, Ammie K. Piel, Alex K. Mundry, Roger Wittig, Roman M. Boesch, Christophe Kühl, Hjalmar S. |
author_sort | Kalan, Ammie K. |
collection | PubMed |
description | BACKGROUND: Assessing the range and territories of wild mammals traditionally requires years of data collection and often involves directly following individuals or using tracking devices. Indirect and non-invasive methods of monitoring wildlife have therefore emerged as attractive alternatives due to their ability to collect data at large spatiotemporal scales using standardized remote sensing technologies. Here, we investigate the use of two novel passive acoustic monitoring (PAM) systems used to capture long-distance sounds produced by the same species, wild chimpanzees (Pan troglodytes), living in two different habitats: forest (Taï, Côte d’Ivoire) and savanna-woodland (Issa valley, Tanzania). RESULTS: Using data collected independently at two field sites, we show that detections of chimpanzee sounds on autonomous recording devices were predicted by direct and indirect indices of chimpanzee presence. At Taï, the number of chimpanzee buttress drums detected on recording devices was positively influenced by the number of hours chimpanzees were seen ranging within a 1 km radius of a device. We observed a similar but weaker relationship within a 500 m radius. At Issa, the number of indirect chimpanzee observations positively predicted detections of chimpanzee loud calls on a recording device within a 500 m but not a 1 km radius. Moreover, using just seven months of PAM data, we could locate two known chimpanzee communities in Taï and observed monthly spatial variation in the center of activity for each group. CONCLUSIONS: Our work shows PAM is a promising new tool for gathering information about the ranging behavior and habitat use of chimpanzees and can be easily adopted for other large territorial mammals, provided they produce long-distance acoustic signals that can be captured by autonomous recording devices (e.g., lions and wolves). With this study we hope to promote more interdisciplinary research in PAM to help overcome its challenges, particularly in data processing, to improve its wider application. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12983-016-0167-8) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-4977853 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-49778532016-08-10 Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes) Kalan, Ammie K. Piel, Alex K. Mundry, Roger Wittig, Roman M. Boesch, Christophe Kühl, Hjalmar S. Front Zool Research BACKGROUND: Assessing the range and territories of wild mammals traditionally requires years of data collection and often involves directly following individuals or using tracking devices. Indirect and non-invasive methods of monitoring wildlife have therefore emerged as attractive alternatives due to their ability to collect data at large spatiotemporal scales using standardized remote sensing technologies. Here, we investigate the use of two novel passive acoustic monitoring (PAM) systems used to capture long-distance sounds produced by the same species, wild chimpanzees (Pan troglodytes), living in two different habitats: forest (Taï, Côte d’Ivoire) and savanna-woodland (Issa valley, Tanzania). RESULTS: Using data collected independently at two field sites, we show that detections of chimpanzee sounds on autonomous recording devices were predicted by direct and indirect indices of chimpanzee presence. At Taï, the number of chimpanzee buttress drums detected on recording devices was positively influenced by the number of hours chimpanzees were seen ranging within a 1 km radius of a device. We observed a similar but weaker relationship within a 500 m radius. At Issa, the number of indirect chimpanzee observations positively predicted detections of chimpanzee loud calls on a recording device within a 500 m but not a 1 km radius. Moreover, using just seven months of PAM data, we could locate two known chimpanzee communities in Taï and observed monthly spatial variation in the center of activity for each group. CONCLUSIONS: Our work shows PAM is a promising new tool for gathering information about the ranging behavior and habitat use of chimpanzees and can be easily adopted for other large territorial mammals, provided they produce long-distance acoustic signals that can be captured by autonomous recording devices (e.g., lions and wolves). With this study we hope to promote more interdisciplinary research in PAM to help overcome its challenges, particularly in data processing, to improve its wider application. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12983-016-0167-8) contains supplementary material, which is available to authorized users. BioMed Central 2016-08-08 /pmc/articles/PMC4977853/ /pubmed/27507999 http://dx.doi.org/10.1186/s12983-016-0167-8 Text en © The Author(s). 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Kalan, Ammie K. Piel, Alex K. Mundry, Roger Wittig, Roman M. Boesch, Christophe Kühl, Hjalmar S. Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes) |
title | Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes) |
title_full | Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes) |
title_fullStr | Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes) |
title_full_unstemmed | Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes) |
title_short | Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes) |
title_sort | passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (pan troglodytes) |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4977853/ https://www.ncbi.nlm.nih.gov/pubmed/27507999 http://dx.doi.org/10.1186/s12983-016-0167-8 |
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