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1 November 2018 Plant Community Responses to Mastication and Mulching of One-Seed Juniper (Juniperus monosperma)
Rachel L. Rubin, Carla M. Roybal
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Mechanical cutting and mastication of juniper trees aims to restore grassland habitat by reducing the density of encroaching woody species. However, the associated soil disturbance may also create conduits for invasive species, a risk that must be mitigated by land managers. We characterized herbaceous communities in treated and adjacent untreated areas in a piñon-juniper (Pinus edulis and Juniper monosperma) woodland in northern Arizona 2.5 years after treatment. Untreated plots had 4× the herbaceous cover (82%) than treated plots (21%). Within treated plots, native species cover (19%)was 10× higher than invasive species cover (2%). Furthermore, treated plots exhibited greater plant community variability and diversity than untreated plots, driven by an increase in the diversity of native grasses and non-native forbs. No new recruits were Arizona listed noxious weeds, indicating that, at least in the short term, mastication is not producing invasive species hot spots in this piñon-juniper woodland.

© 2018 The Society for Range Management. Published by Elsevier Inc. All rights reserved.
Rachel L. Rubin and Carla M. Roybal "Plant Community Responses to Mastication and Mulching of One-Seed Juniper (Juniperus monosperma)," Rangeland Ecology and Management 71(6), 753-756, (1 November 2018).
Received: 7 July 2017; Accepted: 18 April 2018; Published: 1 November 2018
grassland restoration
invasive species
northern Arizona
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