Soils mediate the impact of fine woody debris on invasive and native grasses as whole trees are mechanically shredded into firebreaks in piñon-juniper woodlands

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• 作者：Zachary T. Aanderud^a ; ^{zachary_aanderud@byu.edu} ; Donald R. Schoolmaster^b ; Deborah Rigby^a ; Jordon Bybee^a ; Tayte Campbell^a ; Bruce A. Roundy^a
• 关键词：Bromus tectorum ; Mastication ; Microbial biomass ; Phosphorus ; Pseudoroegneria spicata ; Shredding
• 刊名：Journal of Arid Environments
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：137
• 期：Complete
• 页码：60-68
• 全文大小：789 K
• 卷排序：137

文摘

Fine woody debris (FWD) resulting from a fire mitigation practice increased the frequency of native and exotic grasses. Deep soil processes mediated grass frequencies following FWD but only partially explained the variation of two natives. High levels of P in FWD covered surface soils elicited no change among any grass, suggesting that P did not limit grasses. The number of years since shredding, but not fertile areas associated with tree-islands structured grass responses to FWD.