Arid
DOI10.1007/s00442-008-1231-7
Microsite and herbaceous vegetation heterogeneity after burning Artemisia tridentata steppe
Davies, Kirk W.; Bates, Jonathan D.; James, Jeremy J.
通讯作者Davies, Kirk W.
来源期刊OECOLOGIA
ISSN0029-8549
出版年2009
卷号159期号:3页码:597-606
英文摘要

Woody vegetation can create distinct subcanopy and interspace microsites, which often result in resource islands in subcanopies compared to interspaces. This heterogeneity in soil resources contributes to herbaceous vegetation heterogeneity in plant communities. However, information detailing the impact of disturbance, such as fire, that removes the woody vegetation on microsites and herbaceous vegetation heterogeneity is limited. The purpose of this study was to determine the influence of burning on microsites and herbaceous vegetation in subcanopies and interspaces. Six study sites (blocks) were located at the Northern Great Basin Experimental Range in shrub (Artemisia tridentata ssp. wyomingensis (Beetle & A. Young) S.L. Welsh)-bunchgrass plant communities and one half of each block was burned to remove A. tridentata. Herbaceous vegetation and microsite characteristics were measured 2 years post-fire in intact and burned subcanopies and interspaces. Burning resulted in microsite and herbaceous vegetation differences between intact and burned subcanopies and intact and burned interspaces. However, burned subcanopies and burned interspaces appeared to be relatively similar. The similarity in microsite characteristics probably explains the lack of differences in herbaceous vegetation cover and biomass production between burned subcanopies and burned interspaces (P > 0.05). However, some microsite and herbaceous vegetation characteristics differed between burned subcanopies and burned interspaces. Our results suggest that disturbances that remove woody vegetation reduced microsite and herbaceous vegetation heterogeneity within plant communities, but do not completely remove the resource island effect. This suggests soil resource heterogeneity may influence post-fire community assembly and contribute to diversity maintenance.


英文关键词Coexistence Disturbance Micro-environment Prescribed fire Resource island
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000263418800012
WOS关键词SAGEBRUSH-GRASS RANGE ; BIG SAGEBRUSH ; NITROGEN MINERALIZATION ; ISOTOPE COMPOSITION ; DESERT ECOSYSTEMS ; RESOURCE ISLANDS ; EASTERN OREGON ; SOILS ; PATTERNS ; PLANTS
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/2XILL650/162070
作者单位USDA, ARS, Eastern Oregon Agr Res Ctr, Burns, OR 97720 USA
推荐引用方式
GB/T 7714
Davies, Kirk W.,Bates, Jonathan D.,James, Jeremy J.. Microsite and herbaceous vegetation heterogeneity after burning Artemisia tridentata steppe[J],2009,159(3):597-606.
APA Davies, Kirk W.,Bates, Jonathan D.,&James, Jeremy J..(2009).Microsite and herbaceous vegetation heterogeneity after burning Artemisia tridentata steppe.OECOLOGIA,159(3),597-606.
MLA Davies, Kirk W.,et al."Microsite and herbaceous vegetation heterogeneity after burning Artemisia tridentata steppe".OECOLOGIA 159.3(2009):597-606.
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