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    • Rangeland Ecology & Management, Volume 67 (2014)
    • Rangeland Ecology & Management, Volume 67, Number 2 (March 2014)
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    Vegetation responses to Pinyon-Juniper treatments in Eastern Nevada

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    Author
    Provencher, L.
    Thompson, J.
    Issue Date
    2014-03
    Keywords
    Black sagebrush
    Chaining
    Feller-buncher
    Great Basin
    Mastication
    Perennial grass
    
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    Citation
    Provencher, L., & Thompson, J. (2014). Vegetation responses to Pinyon-Juniper treatments in Eastern Nevada. Rangeland Ecology & Management, 67(2), 195–205.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/657026
    DOI
    10.2111/REM-D-12-00126.1
    Additional Links
    https://rangelands.org/
    Abstract
    Comparisons of tree-removal treatments to reduce the cover of single-leaf pinyon (Pinus monophylla Torr. and Frém.) and Utah juniper (Juniperus osteosperma Torr. Little), and subsequently increase native herbaceous cover in black sagebrush (Artemisia nova A. Nelson), are needed to identify most cost-effective methods. Two adjacent vegetation management experiments were initiated in 2006 and monitored until 2010 in eastern Nevada to compare the costs and efficacy of various tree reduction methods. One Department of Energy (DOE) experiment compared a control to five treatments: bulldozing imitating chaining ($205-·-ha-1), lop-pile-burn ($2-309-·-ha-1), lop-and-scatter ($1-297- ·-ha-1), feller-buncher and chipper ($4-940-·- ha-1), and mastication ($1-136-·-ha-1), whereas a second Bureau of Land Management (BLM) experiment compared one-way chaining ($205-·-ha-1) to a control treatment. Chaining and bulldozing resulted in the least reduction of tree cover among the treatments. In the DOE experiment, forb cover only decreased in the mastication treatment. Litter increased in all methods. Slash cover was lowest in the control and lop-pile-burn treatments, intermediate in the feller-buncher and mastication treatments, and highest in the bulldozing and lop-and-scatter treatments. By 2010, forb cover and the combined cover of dead shrubs and trees were increased and decreased, respectively, by chaining in the BLM experiment. Nonnative annual grass and biotic crust were absent or uncommon before and after treatment implementation. In both experiments, tree removal resulted in a nonsignificant increase in perennial grass cover even 4 yr post-treatment. An ecological return-on-investment (EROI) metric was developed to compare perennial grass cover and tree cover per unit area cost of each active treatment. By 2010, chaining or bulldozing, followed by mastication, showed the highest EROI for improving perennial grass and decreasing tree cover. Mastication is recommended for restoration of smaller tree-encroached areas, whereas land managers should reconsider smooth chaining, despite its negative perceptions, for rapid and cost-efficient restoration of large landscapes obligates. © 2014 The Society for Range Management.
    Type
    Article
    text
    Language
    en
    ISSN
    0022-409x
    ae974a485f413a2113503eed53cd6c53
    10.2111/REM-D-12-00126.1
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 67, Number 2 (March 2014)

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