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DOI:	10.1371/journal.pone.0092613
论文题名:	Satellites, the All-Seeing Eyes in the Sky: Counting Elephant Seals from Space
作者:	Clive R. McMahon; Hamish Howe; John van den Hoff; Rachael Alderman; Henk Brolsma; Mark A. Hindell
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-3-20
卷:	9, 期:3
语种:	英语
英文关键词:	Seals ; Confidence intervals ; Antarctica ; Census ; Cryptic speciation ; Marine mammals ; Seabirds ; Wildlife
英文摘要:	Regular censuses are fundamental for the management of animal populations but, are logistically challenging for species living in remote regions. The advent of readily accessible, high resolution satellite images of earth mean that it is possible to resolve relatively small (0.6 m) objects, sufficient to discern large animals. To illustrate how these advances can be used to count animals in remote regions, individual elephant seals (Mirounga leonina) were counted using satellite imagery. We used an image taken on 10/10/2011 to count elephant seals (n = 1790±306 (95%CL)) on the isthmus of Macquarie Island, an estimate which overlapped with concurrent ground counts (n = 1991). The number of individuals per harem estimated using the two approaches were highly correlated, with a slope close to one and the estimated intercept also encompassing zero. This proof of concept opens the way for satellites to be used as a standard censusing technique for inaccessible and cryptically coloured species. Quantifying the population trends of higher order predators provides an especially informative and tractable indicator of ecosystem health.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0092613&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/19635
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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journal.pone.0092613.PDF（3033KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia;Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia;Australian Antarctic Division, Channel Highway, Kingston, Tasmania, Australia;Threatened Species & Marine Section, Department of Primary Industries, Water and the Environment, Hobart, Tasmania, Australia;Australian Antarctic Division, Channel Highway, Kingston, Tasmania, Australia;Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia

Recommended Citation:

Clive R. McMahon,Hamish Howe,John van den Hoff,et al. Satellites, the All-Seeing Eyes in the Sky: Counting Elephant Seals from Space[J]. PLOS ONE,2014-01-01,9(3)

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