Arid
DOI10.1016/j.jaridenv.2006.10.017
The influence of Artemsia tridentata ssp wyomingensis on microsite and herbaceous vegetation heterogeneity
Davies, K. W.; Bates, J. D.; Miller, R. F.
通讯作者Davies, K. W.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
出版年2007
卷号69期号:3页码:441-457
英文摘要

The spatial distribution of Artemisia tridentata ssp. wyomingensis (Beetle & A. Young) S.L. Welsh within plant communities creates two distinct zones; underneath (subcanopy) and between shrub canopies (interspace). The purpose the study was to determine the influence of subcanopy and interspace zones on microsite characteristics and herbaceous vegetation. Study sites were located at the Northern Great Basin Experimental Range (NGBER) (56 km west of Burns, OR) and Baker Pass (80 km southeast of Burns, OR). At the NGBER, microsite and vegetation differences existed between subcanopy and interspace zones. Compared to the interspace, subcanopy zones were characterized by lower fluctuations in soil temperature, higher levels of soil organic matter, nitrogen, carbon, and water, and greater herbaceous biomass, cover, and density. A. tridentata ssp. wyomingensis appears to strongly influence the spatial arrangement of herbaceous vegetation at the NGBER. Zonal vegetation differences measured at the NGBER were not found at Baker Pass, a location with a more north-facing aspect than the NBGER. Our results suggest that the influence of A. tridentata ssp. wyomingensis on herbaceous spatial heterogeneity may be greater as sites become warmer and drier. Our study demonstrated the potential of A. tridentata ssp. wyomingensis to create herbaceous spatial heterogeneity, elucidated that the relationships between A. tridentata ssp. wyomingensis and herbaceous species are complex, and can be site specific. Published by Elsevier Ltd.


英文关键词wyoming big sagebrush micro-environment subcanopy interspace plant interactions
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000245349300008
WOS关键词GREAT-BASIN PERENNIALS ; SAGEBRUSH-GRASS RANGE ; BIG SAGEBRUSH ; EASTERN OREGON ; ARTEMISIA-TRIDENTATA ; ISOTOPE COMPOSITION ; COMPETITION ; PATTERNS ; DESERT ; PLANTS
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/2XILL650/154772
作者单位(1)USDA ARS, Eastern Oregon Agr Res Ctr, Burns, OR 97720 USA
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GB/T 7714
Davies, K. W.,Bates, J. D.,Miller, R. F.. The influence of Artemsia tridentata ssp wyomingensis on microsite and herbaceous vegetation heterogeneity[J],2007,69(3):441-457.
APA Davies, K. W.,Bates, J. D.,&Miller, R. F..(2007).The influence of Artemsia tridentata ssp wyomingensis on microsite and herbaceous vegetation heterogeneity.JOURNAL OF ARID ENVIRONMENTS,69(3),441-457.
MLA Davies, K. W.,et al."The influence of Artemsia tridentata ssp wyomingensis on microsite and herbaceous vegetation heterogeneity".JOURNAL OF ARID ENVIRONMENTS 69.3(2007):441-457.
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