干旱区生态环境知识资源中心(Arid): Long-term sand dune spatio-temporal dynamics and endemic plant habitat extent in the Athabasca sand dunes of northern Saskatchewan

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DOI	10.1002/rse2.90
	Long-term sand dune spatio-temporal dynamics and endemic plant habitat extent in the Athabasca sand dunes of northern Saskatchewan
	Attanayake, Anjika U.; Xu, Dandan; Guo, Xulin; Lamb, Eric G.
通讯作者	Lamb, EG (corresponding author), Univ Saskatchewan, Dept Plant Sci, 51 Campus Dr, Saskatoon, SK S7N 5A8, Canada.
来源期刊	REMOTE SENSING IN ECOLOGY AND CONSERVATION
EISSN	2056-3485
出版年	2019
卷号	5 期号:1 页码:70-86
英文摘要	The Athabasca sand dunes in northern Saskatchewan and north-east Alberta are a unique landscape of moving sand that hosts nine narrowly distributed endemic vascular plant taxa. We modeled the extent of habitat for each species, corresponding dune morphologies in species habitat, spatial and temporal variation in dune environments, and rates of woody vegetation encroachment at dune boundaries to support an assessment of long-term threats for the Athabasca endemic dune flora. Landsat images were used to maximize the time spans and areal coverage of the study. The Athabasca sand dunes are currently active and characterized morphologically by crescentic ridge and morphodynamically by transverse form dunes. Longitudinal sand movement parallel to the dune axis resulted in the creation of new dune areas along the east and south-east boundaries of the dune fields at a rate of 0.14 km(2) year(-1). Forest succession along the western boundaries of the dune fields resulted at an annual dune loss of 1.98 km(2) year(-1). The net extent of dune stabilization between 1985 and 2014 was 53.76 km(2) or nearly 20 percent of the total open sand dune extent. All habitat modeling methods showed robust performance (> 0.5 AUC), with the best performance in most cases from generalized linear models. Estimated total available/occupied habitat was comparatively low for the least abundant species Achillea millefolium (38.92 km(2)) and Armeria maritima (48.82 km(2)), and of those areas 53.5% and 16.29%, respectively, are influenced by dune stabilization. Continuing stabilization of the Athabasca sand dunes region may present conservation concerns for these narrowly distributed endemic taxa.
英文关键词	Athabasca sand dunes endemic vascular plants Landsat images plant habitat modeling remote sensing sand dune migration sand dune morphologies species distribution modeling
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000462652500005
WOS关键词	SPECIES DISTRIBUTION MODELS ; SAMPLE-SIZE ; DESERT ; FIELD ; STABILIZATION ; SALIX ; TAXA ; TM
WOS类目	Ecology ; Remote Sensing
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369334
作者单位	[Attanayake, Anjika U.; Lamb, Eric G.] Univ Saskatchewan, Dept Plant Sci, 51 Campus Dr, Saskatoon, SK S7N 5A8, Canada; [Xu, Dandan] Nanjing Forestry Univ, Coll Biol & Environm, Dept Ecol, 159 Longpan St, Nanjing 210037, Jiangsu, Peoples R China; [Guo, Xulin] Univ Saskatchewan, Dept Geog & Planning, 117 Sci Pl, Saskatoon, SK S7N 5C8, Canada
推荐引用方式 GB/T 7714	Attanayake, Anjika U.,Xu, Dandan,Guo, Xulin,et al. Long-term sand dune spatio-temporal dynamics and endemic plant habitat extent in the Athabasca sand dunes of northern Saskatchewan[J],2019,5(1):70-86.
APA	Attanayake, Anjika U.,Xu, Dandan,Guo, Xulin,&Lamb, Eric G..(2019).Long-term sand dune spatio-temporal dynamics and endemic plant habitat extent in the Athabasca sand dunes of northern Saskatchewan.REMOTE SENSING IN ECOLOGY AND CONSERVATION,5(1),70-86.
MLA	Attanayake, Anjika U.,et al."Long-term sand dune spatio-temporal dynamics and endemic plant habitat extent in the Athabasca sand dunes of northern Saskatchewan".REMOTE SENSING IN ECOLOGY AND CONSERVATION 5.1(2019):70-86.