| Title |
Density and population estimate of gibbons (Hylobates albibarbis) in the Sabangau catchment, Central Kalimantan, Indonesia
|
|---|---|
| Published in |
Primates, September 2007
|
| DOI | 10.1007/s10329-007-0063-0 |
| Pubmed ID | |
| Authors |
Susan M. Cheyne, Claire J. H. Thompson, Abigail C. Phillips, Robyn M. C. Hill, Suwido H. Limin |
| Abstract |
We demonstrate that although auditory sampling is a useful tool, this method alone will not provide a truly accurate indication of population size, density and distribution of gibbons in an area. If auditory sampling alone is employed, we show that data collection must take place over a sufficient period to account for variation in calling patterns across seasons. The population of Hylobates albibarbis in the Sabangau catchment, Central Kalimantan, Indonesia, was surveyed from July to December 2005 using methods established previously. In addition, auditory sampling was complemented by detailed behavioural data on six habituated groups within the study area. Here we compare results from this study to those of a 1-month study conducted in 2004. The total population of the Sabangau catchment is estimated to be about in the tens of thousands, though numbers, distribution and density for the different forest subtypes vary considerably. We propose that future density surveys of gibbons must include data from all forest subtypes where gibbons are found and that extrapolating from one forest subtype is likely to yield inaccurate density and population estimates. We also propose that auditory census be carried out by using at least three listening posts (LP) in order to increase the area sampled and the chances of hearing groups. Our results suggest that the Sabangau catchment contains one of the largest remaining contiguous populations of Bornean agile gibbon. |
Mendeley readers
The data shown below were compiled from readership statistics for 173 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Indonesia | 2 | 1% |
| United Kingdom | 2 | 1% |
| Brazil | 1 | <1% |
| India | 1 | <1% |
| Canada | 1 | <1% |
| Unknown | 166 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 43 | 25% |
| Researcher | 29 | 17% |
| Student > Bachelor | 22 | 13% |
| Student > Ph. D. Student | 22 | 13% |
| Student > Postgraduate | 13 | 8% |
| Other | 25 | 14% |
| Unknown | 19 | 11% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 75 | 43% |
| Environmental Science | 51 | 29% |
| Social Sciences | 8 | 5% |
| Earth and Planetary Sciences | 3 | 2% |
| Biochemistry, Genetics and Molecular Biology | 2 | 1% |
| Other | 9 | 5% |
| Unknown | 25 | 14% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 23 March 2023.
All research outputs
#7,755,938
of 23,575,882 outputs
Outputs from Primates
#476
of 1,036 outputs
Outputs of similar age
#25,602
of 72,432 outputs
Outputs of similar age from Primates
#4
of 7 outputs
Altmetric has tracked 23,575,882 research outputs across all sources so far. This one is in the 44th percentile – i.e., 44% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,036 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 19.4. This one is in the 29th percentile – i.e., 29% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 72,432 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 17th percentile – i.e., 17% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 7 others from the same source and published within six weeks on either side of this one. This one has scored higher than 3 of them.