Arid
DOI10.1016/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
ISSN0140-1963
EISSN1095-922X
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
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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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