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DOI10.1007/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
ISSN1612-4642
EISSN1439-0574
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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