干旱区生态环境知识资源中心(Arid): Forb community responses to an extensive drought in two contrasting land-use types of a semi-arid Lowveld savanna

Arid

DOI	10.2989/10220119.2020.1726464
	Forb community responses to an extensive drought in two contrasting land-use types of a semi-arid Lowveld savanna
	Siebert, F.; Klem, J.; Van Coller, H.
通讯作者	Siebert, F.
来源期刊	AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE
ISSN	1022-0119
EISSN	1727-9380
出版年	2020
卷号	37 期号:1 页码:53-64
英文摘要	Projected increases in the frequency and severity of drought events are expected to impose changes in the ecology of native forb communities in semi-arid ecosystems. We examined the state of forb communities during, and directly after an extreme drought event across two contrasting land-use types, which included a protected area (high diversity of free roaming wild herbivores) and communal rangeland (long history of intensive cattle grazing) in a semi-arid Lowveld savanna of the Gazankulu area, South Africa. Forb floristic data were collected towards the end of the drought and repeated after the drought release a few months later. Forb community composition was significantly different among land-use types. Community changes were not induced by annual forb emergence alone, but through species-specific dominance shifts, which differed among land-use types. Forb richness, diversity and biomass were equally low at both land-use types and increased significantly after the drought release, although the magnitude of response was much stronger in the protected area, whereas drought contributed to a directional change in the protected area with a complete post-drought turnover in both annual and perennial forb species, much less variability was observed in the communal rangeland, which may suggest long-term effects imposed by land-use history.
英文关键词	climate change diversity grazing herbivory rainfall variability
类型	Article
语种	英语
国家	South Africa
开放获取类型	Green Published
收录类别	SCI-E
WOS记录号	WOS:000521279400005
WOS关键词	GRASSLAND PLANT-COMMUNITIES ; VEGETATION STRUCTURE ; LARGE HERBIVORES ; SOUTH-AFRICA ; SEED BANKS ; RAINFALL VARIABILITY ; GRAZING PRESSURE ; NORTH-AMERICA ; LIFE-HISTORY ; DYNAMICS
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/2XILL650/313913
作者单位	North West Univ, Unit Environm Sci & Management, Potchefstroom, South Africa
推荐引用方式 GB/T 7714	Siebert, F.,Klem, J.,Van Coller, H.. Forb community responses to an extensive drought in two contrasting land-use types of a semi-arid Lowveld savanna[J],2020,37(1):53-64.
APA	Siebert, F.,Klem, J.,&Van Coller, H..(2020).Forb community responses to an extensive drought in two contrasting land-use types of a semi-arid Lowveld savanna.AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE,37(1),53-64.
MLA	Siebert, F.,et al."Forb community responses to an extensive drought in two contrasting land-use types of a semi-arid Lowveld savanna".AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE 37.1(2020):53-64.