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ARS Home » Pacific West Area » Logan, Utah » Forage and Range Research » Research » Research Project #437834

Research Project: Develop a Long-term Perspective of Vegetation Change in Reponse to Different Grazing Regimes, Seeding, and Shrub Reduction in Sagebrush Rangelands

Location: Forage and Range Research

Project Number: 2080-21000-018-29-N
Project Type: Non-Funded Cooperative Agreement

Start Date: Mar 1, 2020
End Date: Nov 15, 2020

Objective:
Characterize the long-term vegetation responses to a two-way chain harrow treatment and broadcast seeding of 12 herbaceous species applied in 2010 at eight Wyoming big sagebrush sites.

Approach:
Collaborative experiments initiated in 2010 will be evaluated to determine the effectiveness of shrub reduction, seeding, and grazing management at operational pasture scales (i.e., ~10-20-acre plots) by the Forage and Range Research, Logan, Utah, USA (hereafter FRR), and Kennecott Utah Copper, LLC. Evaluations will include measuring vegetation and ground surface cover across 8 pastures of various sizes located upon a portion of Kennecott property located in Salt Lake County, Utah, known as Barneys Ridge. Previously installed sampling locations will be visited in spring and fall 2020 to obtain detailed vegetation measurements associated with two study phases (i.e., phase 1 and 2). While phase 1 was completed in 2013, vegetation will be re-monitored to provide a longer-term understanding of how past land cultivation and seeding influence the magnitude of vegetation following the application of a harrow-seeding treatment in 2010. For phase 2, vegetation wil be monitored within four non-grazed areas at each of the eight sites to determine how post-treatment livestock grazing impact longer-term vegetation responses (i.e., 10-year).