Arid
DOI10.1890/13-1774.1
Granivory of invasive, naturalized, and native plants in communities differentially susceptible to invasion
Connolly, B. M.1; Pearson, D. E.2,3; Mack, R. N.1
通讯作者Connolly, B. M.
来源期刊ECOLOGY
ISSN0012-9658
EISSN1939-9170
出版年2014
卷号95期号:7页码:1759-1769
英文摘要

Seed predation is an important biotic filter that can influence abundance and spatial distributions of native species through differential effects on recruitment. This filter may also influence the relative abundance of nonnative plants within habitats and the communities’ susceptibility to invasion via differences in granivore identity, abundance, and food preference. We evaluated the effect of postdispersal seed predators on the establishment of invasive, naturalized, and native species within and between adjacent forest and steppe communities of eastern Washington, USA that differ in severity of plant invasion. Seed removal from trays placed within guild-specific exclosures revealed that small mammals were the dominant seed predators in both forest and steppe. Seeds of invasive species (Bromus tectorum, Cirsium arvense) were removed significantly less than the seeds of native (Pseudoroegneria spicata, Balsamorhiza sagittata) and naturalized (Secale cereale, Centaurea cyanus) species. Seed predation limited seedling emergence and establishment in both communities in the absence of competition in a pattern reflecting natural plant abundance: S. cereale was most suppressed, B. tectorum was least suppressed, and P. spicata was suppressed at an intermediate level. Furthermore, seed predation reduced the residual seed bank for all species. Seed mass correlated with seed removal rates in the forest and their subsequent effects on plant recruitment; larger seeds were removed at higher rates than smaller seeds. Our vegetation surveys indicate higher densities and canopy cover of nonnative species occur in the steppe compared with the forest understory, suggesting the steppe may be more susceptible to invasion. Seed predation alone, however, did not result in significant differences in establishment for any species between these communities, presumably due to similar total small-mammal abundance between communities. Consequently, preferential seed predation by small mammals predicts plant establishment for our test species within these communities but not between them. Accumulating evidence suggests that seed predation can be an important biotic filter affecting plant establishment via differences in consumer preferences and abundance with important ramifications for plant invasions and in situ community assembly.


英文关键词biotic resistance eastern Washington, USA exclosure forest plant communities invasibility invasiveness recruitment seed addition seed bank seed predation steppe plant communities
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000339470500006
WOS关键词SEED PREDATION ; BIOTIC RESISTANCE ; POPULATION DYNAMICS ; BROMUS-TECTORUM ; REMOVAL ; RODENTS ; DESERT ; ABUNDANCE ; SIZE ; 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/2XILL650/181710
作者单位1.Washington State Univ, Sch Biol Sci, Pullman, WA 99164 USA;
2.US Forest Serv, Rocky Mt Res Stn, USDA, Missoula, MT 59801 USA;
3.Univ Montana, Div Biol Sci, Missoula, MT 59812 USA
推荐引用方式
GB/T 7714
Connolly, B. M.,Pearson, D. E.,Mack, R. N.. Granivory of invasive, naturalized, and native plants in communities differentially susceptible to invasion[J],2014,95(7):1759-1769.
APA Connolly, B. M.,Pearson, D. E.,&Mack, R. N..(2014).Granivory of invasive, naturalized, and native plants in communities differentially susceptible to invasion.ECOLOGY,95(7),1759-1769.
MLA Connolly, B. M.,et al."Granivory of invasive, naturalized, and native plants in communities differentially susceptible to invasion".ECOLOGY 95.7(2014):1759-1769.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Connolly, B. M.]的文章
[Pearson, D. E.]的文章
[Mack, R. N.]的文章
百度学术
百度学术中相似的文章
[Connolly, B. M.]的文章
[Pearson, D. E.]的文章
[Mack, R. N.]的文章
必应学术
必应学术中相似的文章
[Connolly, B. M.]的文章
[Pearson, D. E.]的文章
[Mack, R. N.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。