Fluctuations of population density in Bornean orangutans (Pongo pygmaeus morio) related to fruit availability in the Danum Valley, Sabah, Malaysia: a 10-year record including two mast fruitings and three other peak fruitings
We investigated the population density of Bornean orangutans (Pongo pygmaeus morio) and fruit availability for 10 years (2005–2014), in primary lowland dipterocarp forests in the Danum Valley, Sabah, Malaysia. During the research period, two mast fruitings and three other peak fruiting events of dif...
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| Format: | Article |
| Language: | English |
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Springer Japan
2017
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| Online Access: | https://eprints.ums.edu.my/id/eprint/19856/1/Fluctuations%20of%20population%20density%20in%20Bornean%20orangutans.pdf |
| _version_ | 1796909916629237760 |
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| author | Tomoko Kanamori Noko Kuze Henry Bernard Titol Peter Malim Shiro Kohshima |
| author_facet | Tomoko Kanamori Noko Kuze Henry Bernard Titol Peter Malim Shiro Kohshima |
| author_sort | Tomoko Kanamori |
| collection | UMS |
| description | We investigated the population density of Bornean orangutans (Pongo pygmaeus morio) and fruit availability for 10 years (2005–2014), in primary lowland dipterocarp forests in the Danum Valley, Sabah, Malaysia. During the research period, two mast fruitings and three other peak fruiting events of different scales occurred in the study area. The orangutan population density, estimated every 2 months by the marked nest count method, changed between 0.3 and 4.4 ind/km2 and the mean population density was 1.3 ind/km2 ± SE 0.1 (n = 56). The population density increased markedly during mast and peak fruiting periods. A significant positive correlation was observed between the population density and fruit availability in the study period (Spearman, R = 0.3, P < 0.01, n = 56). During non-fruiting periods, however, no significant correlation was observed between them. These results suggest that the spatial difference in fruit availability during mast and peak fruiting periods was larger than during non-fruiting periods, and many orangutans temporarily moved to the study site from the surrounding areas seeking fruit. |
| first_indexed | 2024-03-06T02:56:42Z |
| format | Article |
| id | ums.eprints-19856 |
| institution | Universiti Malaysia Sabah |
| language | English |
| last_indexed | 2024-03-06T02:56:42Z |
| publishDate | 2017 |
| publisher | Springer Japan |
| record_format | dspace |
| spelling | ums.eprints-198562018-04-19T03:38:34Z https://eprints.ums.edu.my/id/eprint/19856/ Fluctuations of population density in Bornean orangutans (Pongo pygmaeus morio) related to fruit availability in the Danum Valley, Sabah, Malaysia: a 10-year record including two mast fruitings and three other peak fruitings Tomoko Kanamori Noko Kuze Henry Bernard Titol Peter Malim Shiro Kohshima QH Natural history We investigated the population density of Bornean orangutans (Pongo pygmaeus morio) and fruit availability for 10 years (2005–2014), in primary lowland dipterocarp forests in the Danum Valley, Sabah, Malaysia. During the research period, two mast fruitings and three other peak fruiting events of different scales occurred in the study area. The orangutan population density, estimated every 2 months by the marked nest count method, changed between 0.3 and 4.4 ind/km2 and the mean population density was 1.3 ind/km2 ± SE 0.1 (n = 56). The population density increased markedly during mast and peak fruiting periods. A significant positive correlation was observed between the population density and fruit availability in the study period (Spearman, R = 0.3, P < 0.01, n = 56). During non-fruiting periods, however, no significant correlation was observed between them. These results suggest that the spatial difference in fruit availability during mast and peak fruiting periods was larger than during non-fruiting periods, and many orangutans temporarily moved to the study site from the surrounding areas seeking fruit. Springer Japan 2017-01 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/19856/1/Fluctuations%20of%20population%20density%20in%20Bornean%20orangutans.pdf Tomoko Kanamori and Noko Kuze and Henry Bernard and Titol Peter Malim and Shiro Kohshima (2017) Fluctuations of population density in Bornean orangutans (Pongo pygmaeus morio) related to fruit availability in the Danum Valley, Sabah, Malaysia: a 10-year record including two mast fruitings and three other peak fruitings. Primates, 58 (1). pp. 225-235. ISSN 1610-7365 https://doi.org/10.1007/s10329-016-0584-5 |
| spellingShingle | QH Natural history Tomoko Kanamori Noko Kuze Henry Bernard Titol Peter Malim Shiro Kohshima Fluctuations of population density in Bornean orangutans (Pongo pygmaeus morio) related to fruit availability in the Danum Valley, Sabah, Malaysia: a 10-year record including two mast fruitings and three other peak fruitings |
| title | Fluctuations of population density in Bornean orangutans (Pongo pygmaeus morio) related to fruit availability in the Danum Valley, Sabah, Malaysia: a 10-year record including two mast fruitings and three other peak fruitings |
| title_full | Fluctuations of population density in Bornean orangutans (Pongo pygmaeus morio) related to fruit availability in the Danum Valley, Sabah, Malaysia: a 10-year record including two mast fruitings and three other peak fruitings |
| title_fullStr | Fluctuations of population density in Bornean orangutans (Pongo pygmaeus morio) related to fruit availability in the Danum Valley, Sabah, Malaysia: a 10-year record including two mast fruitings and three other peak fruitings |
| title_full_unstemmed | Fluctuations of population density in Bornean orangutans (Pongo pygmaeus morio) related to fruit availability in the Danum Valley, Sabah, Malaysia: a 10-year record including two mast fruitings and three other peak fruitings |
| title_short | Fluctuations of population density in Bornean orangutans (Pongo pygmaeus morio) related to fruit availability in the Danum Valley, Sabah, Malaysia: a 10-year record including two mast fruitings and three other peak fruitings |
| title_sort | fluctuations of population density in bornean orangutans pongo pygmaeus morio related to fruit availability in the danum valley sabah malaysia a 10 year record including two mast fruitings and three other peak fruitings |
| topic | QH Natural history |
| url | https://eprints.ums.edu.my/id/eprint/19856/1/Fluctuations%20of%20population%20density%20in%20Bornean%20orangutans.pdf |
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