Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2012.08.013 |
Influence of aboveground vegetation on seed bank composition and distribution in a Great Basin Desert sagebrush community | |
Pekas, K. M.; Schupp, E. W. | |
通讯作者 | Pekas, K. M. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2013 |
卷号 | 88页码:113-120 |
英文摘要 | The quantity, composition, and spatial dispersion of seed banks can greatly affect community dynamics. While seed banks of hot deserts have been studied extensively, little is known about seed banks in cold deserts, in particular the relationship between the seed bank and the aboveground vegetation. We investigated the relationship between the seed bank and aboveground vegetation and the effect of microhabitat (shrub interspace or beneath shrub) and aboveground community phase (high or low perennial bunchgrass cover) on the seed bank of a Great Basin Desert sagebrush community. The seed bank and aboveground vegetation differed in their most dominant species, resulting in moderately dissimilar species compositions as determined by Sorensen’s similarity index and Bray-Curtis distance. In contrast, comparing the seed bank species composition to the aboveground vegetation structure (functional groups) using non-metric multidimensional scaling (NMDS) revealed a correspondence between the two communities. Shrub seed densities were higher beneath shrubs. Neither microhabitat nor community phase explained variation in total seed density or species richness. Therefore, our measures of the aboveground vegetation did not influence seed density across functional groups or species richness, and the similarity between the seed bank and aboveground vegetation varied depending on the aboveground organizational level used in comparisons. (c) 2012 Elsevier Ltd. All rights reserved. |
英文关键词 | Aboveground vegetation Great Basin Desert Microhabitat Seed bank Shrub Similarity |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000313392900015 |
WOS关键词 | SPATIAL-PATTERN-ANALYSIS ; SOIL ; GRASSLAND ; RESERVES ; SIMILARITY ; DISPERSAL ; LIFE |
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/2XILL650/177993 |
作者单位 | (1)Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA;(2)Utah State Univ, Ctr Ecol, Logan, UT 84322 USA |
推荐引用方式 GB/T 7714 | Pekas, K. M.,Schupp, E. W.. Influence of aboveground vegetation on seed bank composition and distribution in a Great Basin Desert sagebrush community[J],2013,88:113-120. |
APA | Pekas, K. M.,&Schupp, E. W..(2013).Influence of aboveground vegetation on seed bank composition and distribution in a Great Basin Desert sagebrush community.JOURNAL OF ARID ENVIRONMENTS,88,113-120. |
MLA | Pekas, K. M.,et al."Influence of aboveground vegetation on seed bank composition and distribution in a Great Basin Desert sagebrush community".JOURNAL OF ARID ENVIRONMENTS 88(2013):113-120. |
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