干旱区生态环境知识资源中心(Arid): Low soil nitrogen and moisture limit the expansion of the invasive grass, Megathyrsus maximus (Guinea grass) in semi-arid soils

Arid

DOI	10.1016/j.jaridenv.2022.104788
	Low soil nitrogen and moisture limit the expansion of the invasive grass, Megathyrsus maximus (Guinea grass) in semi-arid soils
	Holland, E. Penelope; Thomas, Vanessa; Soti, Pushpa
通讯作者	Soti, P
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2022
卷号	204
英文摘要	The goal of this study was to predict the range expansion potential of an invasive forage grass, Guinea grass (Megathyrsus maximus). We collected rhizosphere soil samples of M. maximus and coexisting species from 150 different locations and analysed them for soil properties. We estimated the probability of M. maximus presence as a function of soil moisture, organic matter, pH, salinity, total N, and CN ratio using logistic regression. Presence of M. maximus was associated with higher soil moisture, higher organic matter, pH, and nitrogen, but lower salinity and CN ratio. Soil nitrogen and moisture were key factors for predicting the presence of M. maximus. Our results show that while M. Maximus prefers high nitrogen soils, coexisting plants are better adapted to soils with low nitrogen availability. Wetter soil with high nitrogen concentrations gives M. maximus a strong competitive advantage over other species as more nitrogen reduces the effect of otherwise adverse environmental conditions and allows M. maximus to capitalize on moisture. We expect that a regional climate shift towards a wetter rainfall regime in semi-arid regions would facilitate a range expansion by M. maximus further into the rangelands, countering efforts to protect and restore native plant communities.
英文关键词	Soil nitrogen Soil moisture Range expansion Invasive grasses Habitat management
类型	Article
语种	英语
开放获取类型	Green Accepted, Bronze
收录类别	SCI-E
WOS记录号	WOS:000804593400004
WOS关键词	PHENOTYPIC PLASTICITY ; COMMUNITY STRUCTURE ; ALLIARIA-PETIOLATA ; ALIEN PLANTS ; IMPACTS ; COMPETITION ; STRATEGIES ; THORNSCRUB ; PHYSIOLOGY ; ECOLOGY
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393299
推荐引用方式 GB/T 7714	Holland, E. Penelope,Thomas, Vanessa,Soti, Pushpa. Low soil nitrogen and moisture limit the expansion of the invasive grass, Megathyrsus maximus (Guinea grass) in semi-arid soils[J],2022,204.
APA	Holland, E. Penelope,Thomas, Vanessa,&Soti, Pushpa.(2022).Low soil nitrogen and moisture limit the expansion of the invasive grass, Megathyrsus maximus (Guinea grass) in semi-arid soils.JOURNAL OF ARID ENVIRONMENTS,204.
MLA	Holland, E. Penelope,et al."Low soil nitrogen and moisture limit the expansion of the invasive grass, Megathyrsus maximus (Guinea grass) in semi-arid soils".JOURNAL OF ARID ENVIRONMENTS 204(2022).