干旱区生态环境知识资源中心(Arid): Establishment of Salsola tragus on aeolian sands: A Southern Colorado Plateau case study

Arid

DOI	10.1017/inp.2019.7
	Establishment of Salsola tragus on aeolian sands: A Southern Colorado Plateau case study
	Thomas, Kathryn A.1; Redsteer, Margaret Hiza 2
通讯作者	Thomas, Kathryn A.
来源期刊	INVASIVE PLANT SCIENCE AND MANAGEMENT
ISSN	1939-7291
EISSN	1939-747X
出版年	2019
卷号	12 期号:2 页码:124-132
英文摘要	Russian-thistle (Salsola tragus L.), is a nonnative, C-4 photosynthesizing, annual plant that infests disturbed and natural areas in the arid U.S. Southwest. Land managers of natural areas may need to decide whether a S. tragus infestation is potentially harmful and whether it should be actively managed. One factor informing that decision is an understanding of the conditions under which this weed emerges and establishes and how those processes affect where and when infestations occur. We studied S. tragus establishment on aeolian (windblown) sandy soils at Petrified Forest National Park, AZ. Our sites were a previously disturbed sand sheet and a semistabilized sand dune. Measurements in plots on these sites over two growing seasons revealed a similar number of S. tragus seedlings emerging on both sites early in the 2015 growing season. As the season progressed, S. tragus cover (seedling survival and growth) was lower on the sand dune, except for a plot placed entirely on a coppice mound. In 2016, S. tragus seedling emergence and development of cover, measured on plots at both sites, was exceptionally low, as was summer rainfall. A growth chamber assay of seedling emergence from soil and litter samples collected at each site showed emergence was greatest from samples collected where S. tragus litter remained on the soil surface, and otherwise was infrequent. Our study suggests that S. tragus emergence and early establishment are sensitive to low precipitation and that soil-surface microtopography and grass and shrub cover may be determinants of the spatial pattern of infestation on sandy soils. As aeolian sands occur throughout drylands of the U.S. Southwest, deeper understanding of the conditions under which S. tragus seedlings emerge and establish can inform management of this invasive annual in those habitats.
英文关键词	Drylands dune destabilization dunes establishment invasive plants nonnative annual plants Petrified Forest National Park sand sheets seedling emergence
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000482292900006
WOS关键词	NAVAJO NATION ; WATER-USE ; KALI L ; GERMINATION ; CHENOPODIACEAE ; TEMPERATURE ; ENVIRONMENT ; COMPETITION ; RESPONSES ; INVASION
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216545
作者单位	1.US Geol Survey, Southwest Biol Sci Ctr, Tucson, AZ USA; 2.Univ Washington, Interdisciplinary Arts & Sci, Bothell, WA USA
推荐引用方式 GB/T 7714	Thomas, Kathryn A.,Redsteer, Margaret Hiza. Establishment of Salsola tragus on aeolian sands: A Southern Colorado Plateau case study[J]. United States Geological Survey,2019,12(2):124-132.
APA	Thomas, Kathryn A.,&Redsteer, Margaret Hiza.(2019).Establishment of Salsola tragus on aeolian sands: A Southern Colorado Plateau case study.INVASIVE PLANT SCIENCE AND MANAGEMENT,12(2),124-132.
MLA	Thomas, Kathryn A.,et al."Establishment of Salsola tragus on aeolian sands: A Southern Colorado Plateau case study".INVASIVE PLANT SCIENCE AND MANAGEMENT 12.2(2019):124-132.