Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s10344-016-1069-y |
Estimating abundance of striped hyenas (Hyaena hyaena) in the Negev Desert of Israel using camera traps and closed capture-recapture models | |
Tichon, Jonathan1; Rotem, Guy2; Ward, Paul1 | |
通讯作者 | Tichon, Jonathan |
来源期刊 | EUROPEAN JOURNAL OF WILDLIFE RESEARCH
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ISSN | 1612-4642 |
EISSN | 1439-0574 |
出版年 | 2017 |
卷号 | 63期号:1 |
英文摘要 | Estimating key state variables (e.g., abundance/density) of threatened/endangered species is a difficult yet crucial task. These variables are essential for wildlife conservationists/managers to assess the current states and trends of target populations and make state-dependent management decisions. We estimated, using camera traps and two different methodologies, the abundance of the near-threatened striped hyena (Hyaena hyaena) in the Negev Highlands, Israel. Both the traditional closed capture-recapture (closed-CR) and the census/near-census frameworks (both rely on closed CR models) were employed. For attaining a census/near census, we calculated a range of plausible capture/detection probabilities and their combinations with sampling durations that would result in detection of >= 95% of the target population. We then covered a subsection (circa 400 km(2)) of the Negev Highlands using 15 camera traps for 83 days. This targeted sampling provides a strong indication for attaining a census/near census for capture/detection probabilities as low as p = 0.05. The closed CR models (M-0 and M-b) yielded a model averaged estimates of abundance (N) over bar = 7 (SE 1.94E-05, PLCI 7-7) and capture/detection probability (p) over bar = 0.09 (SE 0.033, 95% CI 0.05-0.18). Using the estimated (p) over bar, we calculated that during the sampling, we (ostensibly) captured the entire (99.9%) target population. Additionally, we used spatially explicit capture-recapture (SECR) approach to estimate the density of the hyenas in a subsection of our study area where hyenas were spotted and got an estimate of D = 0.085 individuals/km(2) (SE 0.0334, 95% CI 0.040-0.178) or 8.5 individuals/100 km(2). Many studies estimate abundance/density of threatened/endangered species using closed CR models; however, for small populations of elusive animals, these models often yield less accurate estimates exactly where accuracy is needed the most. While it likely increases the costs and time, the census/near-census framework provides a more accurate solution for such cases. |
英文关键词 | Census Closed CR models Key state variables Threaten/endangered species Population size estimation Small population |
类型 | Article |
语种 | 英语 |
国家 | Scotland ; Israel |
收录类别 | SCI-E |
WOS记录号 | WOS:000394211100005 |
WOS关键词 | POPULATION-SIZE ; DENSITY ESTIMATORS ; PROGRAM MARK ; INDIA ; CONSERVATION ; CARNIVORES ; ANIMALS ; HARVEST |
WOS类目 | Ecology ; Zoology |
WOS研究方向 | Environmental Sciences & Ecology ; Zoology |
来源机构 | Ben-Gurion University of the Negev |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/198877 |
作者单位 | 1.Edinburgh Napier Univ, 1 Sighthill Court, Edinburgh EH11 4BN, Midlothian, Scotland; 2.Ben Gurion Univ Negev, Dept Life Sci, Spatial Ecol Lab, Negev, Israel |
推荐引用方式 GB/T 7714 | Tichon, Jonathan,Rotem, Guy,Ward, Paul. Estimating abundance of striped hyenas (Hyaena hyaena) in the Negev Desert of Israel using camera traps and closed capture-recapture models[J]. Ben-Gurion University of the Negev,2017,63(1). |
APA | Tichon, Jonathan,Rotem, Guy,&Ward, Paul.(2017).Estimating abundance of striped hyenas (Hyaena hyaena) in the Negev Desert of Israel using camera traps and closed capture-recapture models.EUROPEAN JOURNAL OF WILDLIFE RESEARCH,63(1). |
MLA | Tichon, Jonathan,et al."Estimating abundance of striped hyenas (Hyaena hyaena) in the Negev Desert of Israel using camera traps and closed capture-recapture models".EUROPEAN JOURNAL OF WILDLIFE RESEARCH 63.1(2017). |
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