Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2018.03.004 |
Shrub cover and fire history predict seed bank composition in Great Basin shrublands | |
Barga, Sarah; Leger, Elizabeth A. | |
通讯作者 | Barga, Sarah |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2018 |
卷号 | 154页码:40-50 |
英文摘要 | Dormant seeds in the soil are an important contribution to the regenerative potential of an area. Understanding factors that affect seed bank dynamics in arid regions provides insight into how communities respond to disturbance and environmental change. We characterized seed banks in a Great Basin sagebrush steppe system, using field surveys and seed bank studies to compare 17 sites that differed in above-ground vegetation, fire history, and grazing use. We asked whether shrub cover, ground cover, climate, or disturbance history were predictive of seed densities, diversity, the presence of rare species, and similarity between above- and below-ground communities. Fire frequency and a coarse measure of grazing use were not highly predictive of seed bank dynamics, with the exception that sites that burned <10 years ago had greater above-vs. below-ground similarity. Shrub cover predicted multiple below-ground characteristics: Ericameria nauseosa was associated with increased density of introduced species, Chrysothamw viscidiflorus was associated with increased densities of native annual species, and Artemisia tridentata was associated with increased richness of rare native species. Shrub cover estimates were predictive of seed bank composition, and suggest that areas dominated by A. tridentata would have the greatest restoration potential within their seed banks. |
英文关键词 | Great Basin Disturbance Restoration Cold desert Succession Diversity |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000432764800006 |
WOS关键词 | PLANT COMMUNITY ; BIG SAGEBRUSH ; ALIEN PLANTS ; DESERT ; VEGETATION ; DYNAMICS ; RESTORATION ; GERMINATION ; SIMILARITY ; GRASSLAND |
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/2XILL650/210561 |
作者单位 | Univ Nevada, Dept Nat Resources & Environm Sci, Mail Stop 186,1664 N Virginia St, Reno, NV 89557 USA |
推荐引用方式 GB/T 7714 | Barga, Sarah,Leger, Elizabeth A.. Shrub cover and fire history predict seed bank composition in Great Basin shrublands[J],2018,154:40-50. |
APA | Barga, Sarah,&Leger, Elizabeth A..(2018).Shrub cover and fire history predict seed bank composition in Great Basin shrublands.JOURNAL OF ARID ENVIRONMENTS,154,40-50. |
MLA | Barga, Sarah,et al."Shrub cover and fire history predict seed bank composition in Great Basin shrublands".JOURNAL OF ARID ENVIRONMENTS 154(2018):40-50. |
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