Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s10530-016-1303-2 |
Effects of exotic annual grass litter and local environmental gradients on annual plant community structure | |
Wainwright, Claire E.1; Dwyer, John M.1,2; Mayfield, Margaret M.1 | |
通讯作者 | Wainwright, Claire E. |
来源期刊 | BIOLOGICAL INVASIONS
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ISSN | 1387-3547 |
EISSN | 1573-1464 |
出版年 | 2017 |
卷号 | 19期号:2页码:479-491 |
英文摘要 | Exotic annual grasses have been introduced into many semi-arid ecosystems worldwide, often to the detriment of native plant communities. The accumulation of litter from these grasses (i.e. residual dry biomass) has been demonstrated to negatively impact native plant communities and promote positive feedbacks to exotic grass persistence. More targeted experiments are needed, however, to determine the relative impact of exotic grass litter on plant community structure across local environmental gradients. We experimentally added exotic grass litter to annual forb-dominated open woodland communities positioned along natural canopy cover gradients in southwest Western Australia. These communities are an important component of this region’s plant biodiversity hotspot and are documented to be under threat from exotic annual grasses. After a one-year treatment period, we measured the effects of exotic grass litter, soil properties, and canopy cover on native and exotic species richness and abundance, as well as common species’ biomass and abundances. Plant community structure was more strongly influenced by soil properties and canopy cover than by grass litter. Total plant abundances per plot, however, were significantly lower in litter addition plots than control plots, a trend driven by native species. Exotic grass litter was also associated with lower abundances of one very common native species: Waitzia acuminata. Our results suggest that exotic grass litter limits the establishment of some native species in this system. Over multiple years, these subtle impacts may contribute substantially to the successful advancement of exotic species into this system, particularly in certain microenvironments. |
英文关键词 | Annual plants Community structure Exotic grass Invasion Litter Semi-arid ecosystem |
类型 | Article |
语种 | 英语 |
国家 | Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000394152300004 |
WOS关键词 | NATIVE PERENNIAL GRASSES ; RESOURCE AVAILABILITY ; WESTERN-AUSTRALIA ; SOIL NUTRIENTS ; WOODLANDS ; ESTABLISHMENT ; RESTORATION ; VEGETATION ; GERMINATION ; INVASION |
WOS类目 | Biodiversity Conservation ; Ecology |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
来源机构 | Commonwealth Scientific and Industrial Research Organisation |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/197839 |
作者单位 | 1.Univ Queensland, Ctr Ecol, Sch Biol Sci, Bldg 8, St Lucia, Qld 4072, Australia; 2.CSIRO, Land & Water, EcoSci Precinct, Dutton Pk, Qld 4102, Australia |
推荐引用方式 GB/T 7714 | Wainwright, Claire E.,Dwyer, John M.,Mayfield, Margaret M.. Effects of exotic annual grass litter and local environmental gradients on annual plant community structure[J]. Commonwealth Scientific and Industrial Research Organisation,2017,19(2):479-491. |
APA | Wainwright, Claire E.,Dwyer, John M.,&Mayfield, Margaret M..(2017).Effects of exotic annual grass litter and local environmental gradients on annual plant community structure.BIOLOGICAL INVASIONS,19(2),479-491. |
MLA | Wainwright, Claire E.,et al."Effects of exotic annual grass litter and local environmental gradients on annual plant community structure".BIOLOGICAL INVASIONS 19.2(2017):479-491. |
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