干旱区生态环境知识资源中心(Arid): Application of distance sampling for assessing abundance and habitat relationships of a rare Sonoran Desert cactus

Arid

DOI	10.1007/s11258-019-00972-7
	Application of distance sampling for assessing abundance and habitat relationships of a rare Sonoran Desert cactus
	Flesch, Aaron D.1; Murray, Ian W.2; Gicklhorn, Jeffrey M.2; Powell, Brian F.3
通讯作者	Flesch, Aaron D.
来源期刊	PLANT ECOLOGY
ISSN	1385-0237
EISSN	1573-5052
出版年	2019
卷号	220 期号:11 页码:1029-1042
英文摘要	Accurate abundance estimates of plant populations are fundamental to numerous ecological questions and for conservation. Estimating population parameters for rare or cryptic plant species, however, can be challenging and thus developing and testing new methods is useful. We assessed the efficacy of distance sampling for estimating abundance and habitat associations of the endangered Pima pineapple cactus (Coryphantha scheeri var. robustispina), a rare plant in the Sonoran Desert of southwestern North America that has traditionally been surveyed with census-based methods. Distance sampling (DS) involves measuring distances between focal objects and samples of lines or points, and modeling detection functions that adjust estimates for variation in detection probability (P). Although often used in animal systems, DS remains largely untested for plants. We encountered 105 live individuals along 36.9 km of transects in 11 study plots placed across much of the geographic range of the species, and estimated an average density of 1.47 individuals/ha (CV = 0.139). Compared to values from intensive censuses, density estimates from DS were underestimated by only 2.3% on average and highly correlated on the untransformed (r = 0.84) and logarithmic (r = 0.93) scales. Estimates of P averaged 0.49 and declined as soils became increasingly dominated by larger soil substrates, and somewhat with increasing vegetation volume and decreasing cactus height. Local densities increased with increasing slope and soil substrate size and decreased with increasing vegetation volume (P <= 0.024). Combined with careful survey design, DS offers an efficient method for estimating population parameters for uncommon and cryptic plants.
英文关键词	Abundance estimation Detection probability Distance sampling Habitat Pima pineapple cactus Population size Coryphantha scheeri var robustispina
类型	Article
语种	英语
国家	USA
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000493679000003
WOS关键词	LINE-TRANSECT METHODS ; DENSITY ; POPULATION
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
EI主题词	2019-11-01
来源机构	University of Arizona
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310472
作者单位	1.Univ Arizona, Sch Nat Resources & Environm, Desert Lab Tumamoc Hill, 1675 W Anklam Rd, Tucson, AZ 85745 USA; 2.Pima Cty Off Sustainabil & Conservat, 201 N Stone Ave, Tucson, AZ 85701 USA; 3.Pima Cty Nat Resources Pk & Recreat, 3500 W River Rd, Tucson, AZ 85741 USA
推荐引用方式 GB/T 7714	Flesch, Aaron D.,Murray, Ian W.,Gicklhorn, Jeffrey M.,et al. Application of distance sampling for assessing abundance and habitat relationships of a rare Sonoran Desert cactus[J]. University of Arizona,2019,220(11):1029-1042.
APA	Flesch, Aaron D.,Murray, Ian W.,Gicklhorn, Jeffrey M.,&Powell, Brian F..(2019).Application of distance sampling for assessing abundance and habitat relationships of a rare Sonoran Desert cactus.PLANT ECOLOGY,220(11),1029-1042.
MLA	Flesch, Aaron D.,et al."Application of distance sampling for assessing abundance and habitat relationships of a rare Sonoran Desert cactus".PLANT ECOLOGY 220.11(2019):1029-1042.