Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2981/10-046 |
Estimating abundance of mountain ungulates incorporating imperfect detection: argali Ovis ammon in the Gobi Desert, Mongolia | |
Wingard, Ganchimeg J.2; Harris, Richard B.1; Amgalanbaatar, Sukh3; Reading, Richard P.2 | |
通讯作者 | Harris, Richard B. |
来源期刊 | WILDLIFE BIOLOGY
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ISSN | 0909-6396 |
EISSN | 1903-220X |
出版年 | 2011 |
卷号 | 17期号:1页码:93-101 |
英文摘要 | Estimating the density or abundance of mountain ungulates is difficult and rarely conducted in a statistically valid manner. The rough terrain they inhabit, their group-living habits, their relatively low density, and the difficulty of marking individuals all contribute to making rigorous estimates of abundance logistically difficult. Raw (uncalibrated) counts are usually reported, and although their drawbacks are often acknowledged, biases are rarely quantified. In September 2009, we took advantage of the presence of a radio-marked sample of argali Ovis ammon in the Ikh Nart Nature Reserve in south-central Mongolia, as well as the area’s comparatively forgiving topography to estimate abundance simultaneously using two independent methods: distance sampling and mark-resight sampling. Distance sampling produced an abundance estimate of 539(95% CI: 196-1,081) argali within a similar to 330 km(2) study area on the same day that we visually tallied 189 animals. Mark-resight sampling using the Poisson log-normal model yielded an estimate of 747 (95% CI: 484-1,009) argali when we observed, at most, 223 animals in any given day. Although both were imprecise, their similarity increases our confidence that neither estimator was highly biased. Because of budget or logistical restrictions, uncalibrated counts of mountain ungulates are often the only alternative. They should be viewed cautiously, however, and when possible, more rigorous approaches to estimating abundance should be taken. |
英文关键词 | argali distance sampling mark-resight Mongolia Ovis ammon population estimation |
类型 | Article |
语种 | 英语 |
国家 | USA ; Mongolia |
收录类别 | SCI-E |
WOS记录号 | WOS:000290819800010 |
WOS关键词 | POPULATION ESTIMATION |
WOS类目 | Ecology ; Zoology |
WOS研究方向 | Environmental Sciences & Ecology ; Zoology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/170849 |
作者单位 | 1.Univ Montana, Dept Ecosyst & Conservat Sci, Missoula, MT 59812 USA; 2.Denver Zool Fdn, Denver, CO 80205 USA; 3.Mongolian Acad Sci, Inst Biol Mammal Lab, Ulaanbaatar, Mongolia |
推荐引用方式 GB/T 7714 | Wingard, Ganchimeg J.,Harris, Richard B.,Amgalanbaatar, Sukh,et al. Estimating abundance of mountain ungulates incorporating imperfect detection: argali Ovis ammon in the Gobi Desert, Mongolia[J],2011,17(1):93-101. |
APA | Wingard, Ganchimeg J.,Harris, Richard B.,Amgalanbaatar, Sukh,&Reading, Richard P..(2011).Estimating abundance of mountain ungulates incorporating imperfect detection: argali Ovis ammon in the Gobi Desert, Mongolia.WILDLIFE BIOLOGY,17(1),93-101. |
MLA | Wingard, Ganchimeg J.,et al."Estimating abundance of mountain ungulates incorporating imperfect detection: argali Ovis ammon in the Gobi Desert, Mongolia".WILDLIFE BIOLOGY 17.1(2011):93-101. |
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