干旱区生态环境知识资源中心(Arid): Perennial plant patches are sinks for seeds in semi-arid woodlands in varying condition

Arid

DOI	10.1111/avsc.12486
	Perennial plant patches are sinks for seeds in semi-arid woodlands in varying condition
	Val, James; Travers, Samantha K.; Oliver, Ian; Eldridge, David J.
通讯作者	Val, J
来源期刊	APPLIED VEGETATION SCIENCE
ISSN	1402-2001
EISSN	1654-109X
出版年	2020
卷号	23 期号:3 页码:377-385
英文摘要	Questions Understanding the processes that influence resilience in semi-arid woodland communities is of critical importance in landscapes where livestock grazing is the dominant land use and an important driver of site condition. Seed banks are a critical component of site resilience as their persistence can be crucial for recovering from disturbances. We predicted that site condition and landscape structural elements (perennial plant patches) would strongly influence the richness and density of the soil seed bank. Location New South Wales, Australia. Methods We conducted a seedling emergence study to investigate the germinable seed bank in semi-arid woodland. Soil samples were collected from three woodland communities (Cypress pine, Black box, Red gum) from sites in three levels of site condition (poor, average, good) and from four patch types (tree, shrub, grass, open). Seed bank species were assigned to three plant trait groups based on: (a) origin; (b) lifespan; and (c) palatability. We used linear models to assess the effects of community, site condition and patch type on the richness and seed density of the germinable seed bank. Results Site condition did not affect the seed bank density or richness, except for a lower density of highly palatable species at poor-condition sites. Across all communities the importance of patch type on the soil seed bank density and richness varied with plant traits. The seed bank of perennial plant patches had a greater density of perennial species, a lower density of low palatability plants, and a greater richness of native and perennial species than interspaces. Conclusions Our results demonstrate that the germinable soil seed bank in semi-arid woodlands can be relatively resilient to degradation. This suggests that disturbed sites where perennial patches remain, may still have the ability to recover, because these patches act as important seed reservoirs.
英文关键词	density grazing patch type plant traits resilience richness seed bank
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000543807700006
WOS关键词	ARID GRAZING LANDS ; SPECIES COMPOSITION ; SEASONAL-VARIATION ; CENTRAL AUSTRALIA ; BANK DIVERSITY ; SOIL ; VEGETATION ; GRASSLAND ; DISPERSAL ; DESERT
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324857
作者单位	[Val, James] Off Environm & Heritage, POB 363, Buronga, NSW, Australia; [Travers, Samantha K.; Eldridge, David J.] Univ New South Wales, Sch Biol Earth & Environm Sci, Ctr Ecosyst Sci, Sydney, NSW, Australia; [Oliver, Ian] Off Environm & Heritage, Gosford, NSW, Australia; [Eldridge, David J.] Univ New South Wales, Sch Biol Earth & Environm Sci, Off Environm & Heritage, Sydney, NSW, Australia
推荐引用方式 GB/T 7714	Val, James,Travers, Samantha K.,Oliver, Ian,et al. Perennial plant patches are sinks for seeds in semi-arid woodlands in varying condition[J],2020,23(3):377-385.
APA	Val, James,Travers, Samantha K.,Oliver, Ian,&Eldridge, David J..(2020).Perennial plant patches are sinks for seeds in semi-arid woodlands in varying condition.APPLIED VEGETATION SCIENCE,23(3),377-385.
MLA	Val, James,et al."Perennial plant patches are sinks for seeds in semi-arid woodlands in varying condition".APPLIED VEGETATION SCIENCE 23.3(2020):377-385.