Arid
DOI10.1016/j.jaridenv.2012.06.010
Differential seedling performance and environmental correlates in shrub canopy vs. interspace microsites
Boyd, C. S.; Davies, K. W.
通讯作者Boyd, C. S.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2012
卷号87页码:50-57
英文摘要

Shrubs in semi-arid ecosystems promote micro-environmental variation in a variety of soil properties and site characteristics. However, little is known regarding post-fire seedling performance and its association with environmental variation in former shrub canopy and interspace microsites. We compared post-fire seeding success and various soil properties important for seedling establishment between shrub canopy and interspace microsites in Wyoming big sagebrush (Artemisia tridentata) plant communities in southeast Oregon, U.S.A. We burned 5, 20 x 20 m sites and established paired canopy and interspace micro-transects seeded with bluebunch wheatgrass (Pseudoroegneria spicata, 193 seeds/m) or crested wheatgrass (Agropyron cristatum, 177 seeds/m). At one year post-fire, seedling density was 69% higher (p = 0.012) for crested wheatgrass (compared to bluebunch wheatgrass) and 75% higher (p = 0.019) for interspace microsites (compared to canopy). However, tiller and leaf area production were over twice as high (p < 0.05) in canopy microsites. Soil color and soil temperature, explained 19-32% of variation in seedling performance metrics. Shrub effects on seeding success are complex and interact with abiotic disturbances, but patterns of increased seedling performance in canopy microsites and their relationships to soil variables may suggest tactics for increasing success of restoration practices. Published by Elsevier Ltd.


英文关键词Heterogeneity Islands of fertility Resource island Revegetation Sagebrush Wildfire
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000312687000007
WOS关键词PRESCRIBED FIRE ; SPATIAL-DISTRIBUTION ; PLANT ESTABLISHMENT ; PERENNIAL GRASS ; SOIL NUTRIENTS ; ORGANIC-MATTER ; NATIVE PLANTS ; DESERT ; RESTORATION ; CHEATGRASS
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/2XILL650/173302
作者单位ARS, USDA, EOARC, Burns, OR 97720 USA
推荐引用方式
GB/T 7714
Boyd, C. S.,Davies, K. W.. Differential seedling performance and environmental correlates in shrub canopy vs. interspace microsites[J],2012,87:50-57.
APA Boyd, C. S.,&Davies, K. W..(2012).Differential seedling performance and environmental correlates in shrub canopy vs. interspace microsites.JOURNAL OF ARID ENVIRONMENTS,87,50-57.
MLA Boyd, C. S.,et al."Differential seedling performance and environmental correlates in shrub canopy vs. interspace microsites".JOURNAL OF ARID ENVIRONMENTS 87(2012):50-57.
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