The use of photographic rates to estimate densities of tigers and other cryptic mammals

被引:369
作者
Carbone, C
Christie, S
Conforti, K
Coulson, T
Franklin, N
Ginsberg, JR
Griffiths, M
Holden, J
Kawanishi, K
Kinnaird, M
Laidlaw, R
Lynam, A
Macdonald, DW
Martyr, D
McDougal, C
Nath, L
O'Brien, T
Seidensticker, J
Smith, DJL
Sunquist, M
Tilson, R
Shahruddin, WNW
机构
[1] Zool Soc London, Inst Zool, London NW1 4RY, England
[2] Zool Soc London, London Zoo, London NW1 4RY, England
[3] Smithsonian Inst, Natl Zool Pk, Washington, DC 20008 USA
[4] Univ York, Dept Biol, York YO1 5DD, N Yorkshire, England
[5] Sumatran Tiger Project, Lampung 34101, Sumatra, Indonesia
[6] Wildlife Conservat Soc, Int Programs, Bronx, NY 10460 USA
[7] Leuser Dev Program, Medan 20154, Sumatra, Indonesia
[8] Fauna & Flora Int, Cambridge CB1 2DT, England
[9] Univ Florida, Dept Wildlife Ecol & Conservat, Gainesville, FL 32611 USA
[10] Univ Oxford, Dept Zool, Wildlife Conservat Res Unit, Oxford OX1 3PS, England
[11] Tiger Tops, Kathmandu, Nepal
[12] Univ Minnesota, Dept Fisheries & Wildlife, St Paul, MN 55108 USA
关键词
D O I
10.1017/S1367943001001081
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
The monitoring and management of species depends on reliable population estimates, and this can be both difficult and very costly for cryptic large vertebrates that live in forested habitats. Recently developed camera trapping techniques have already been shown to be an effective means of making mark-recapture estimates of individually identifiable animals (e.g. tigers). Camera traps also provide a new method for surveying animal abundance. Through computer simulations, and an analysis of the rates of camera trap capture from 19 studies of tigers across the species' range, we show that the number of camera days/tiger photograph correlates with independent estimates of tiger density. This statistic does not rely on individual identity and is particularly useful for estimating the population density of species that are not individually identifiable. Finally, we used the comparison between observed trapping rates and the computer simulations to estimate the minimum effort required to determine that tigers. or other species, do not exist in an area, a measure that is critical for conservation planning.
引用
收藏
页码:75 / 79
页数:5
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