干旱区生态环境知识资源中心(Arid): Soil nutrients and variation in biomass rather than native species richness influence introduced plant richness in a semi-arid grassland

Arid

DOI	10.1016/j.baae.2021.03.002
	Soil nutrients and variation in biomass rather than native species richness influence introduced plant richness in a semi-arid grassland
	Akin-Fajiye, Morodoluwa; Schmidt, Amanda C.; Fraser, Lauchlan H.
通讯作者	Akin-Fajiye, M (corresponding author), Thompson Rivers Univ, Dept Nat Resource Sci, 805 TRU Way, Kamloops, BC V2C 0C8, Canada.
来源期刊	BASIC AND APPLIED ECOLOGY
ISSN	1439-1791
EISSN	1618-0089
出版年	2021
卷号	53 页码:62-73
英文摘要	Several different hypotheses account for the success of introduced species in new environments. Experimental studies show a negative native-exotic richness relationship (NERR), while observational studies suggest that this relationship is usually positive. Increased resource availability and environmental variation can also enable introduced species to establish in new environments. We conducted an observational study in a semi-arid grassland in the Thompson-Nicola District of British Columbia to examine the biotic and abiotic factors that account for variation in introduced and native species richness. In each of 12 sites, an 8 x 8 m area was set up, containing 64, 1-m(2) plots. We identified and categorized plant species in each site into introduced and native species. We tested the relationship between introduced species richness and native species richness at the 1-m(2) sampling grain and at sampling grains up to 64 m(2). We also analysed the relationship between native and introduced species, and within-plot biomass, and between native and introduced species and variation in biomass. For a representative subset of four sites, we tested the relationship between introduced and native species richness and nitrogen, phosphorus and potassium. We found no NERR at the 1 m(2) sampling grain, nor for the other sampling grains up to 64 m(2). Introduced species richness increased with phosphorus and nitrogen availability, and was also positively related to biomass heterogeneity. Our results indicate that introduced species richness in these grasslands is likely influenced by phosphorus and nitrogen, and by variation in vegetation biomass, but not by native species. More non-native plants are likely to occupy nutrient-rich plots compared to nutrient-poor plots in these grasslands. Variation in biomass can leave gaps for the establishment of introduced species. These results should inform management considerations for the control of invasive species to optimize preservation of grasslands. (C) 2021 Gesellschaft fur Okologie. Published by Elsevier GmbH. All rights reserved.
英文关键词	Nitrogen Phosphorus Introduced plant richness Invasive plants Native species richness Semi-arid Grasslands
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000651370700006
WOS关键词	EXOTIC INVASIVE PLANTS ; BIOTIC RESISTANCE ; NITROGEN DEPOSITION ; UNIMODAL RELATIONSHIP ; SPATIAL SCALES ; CO-LIMITATION ; DIVERSITY ; PRODUCTIVITY ; IMPACTS ; DISTURBANCE
WOS类目	Ecology
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/2XILL650/367783
作者单位	[Akin-Fajiye, Morodoluwa; Schmidt, Amanda C.; Fraser, Lauchlan H.] Thompson Rivers Univ, Dept Nat Resource Sci, 805 TRU Way, Kamloops, BC V2C 0C8, Canada
推荐引用方式 GB/T 7714	Akin-Fajiye, Morodoluwa,Schmidt, Amanda C.,Fraser, Lauchlan H.. Soil nutrients and variation in biomass rather than native species richness influence introduced plant richness in a semi-arid grassland[J],2021,53:62-73.
APA	Akin-Fajiye, Morodoluwa,Schmidt, Amanda C.,&Fraser, Lauchlan H..(2021).Soil nutrients and variation in biomass rather than native species richness influence introduced plant richness in a semi-arid grassland.BASIC AND APPLIED ECOLOGY,53,62-73.
MLA	Akin-Fajiye, Morodoluwa,et al."Soil nutrients and variation in biomass rather than native species richness influence introduced plant richness in a semi-arid grassland".BASIC AND APPLIED ECOLOGY 53(2021):62-73.