ecological site based shrubland management for utah by rebecca mann, usu
DESCRIPTION
TRANSCRIPT
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Ecological Site Based Shrubland Management
For Utah
Rebecca Mann, MS Ecology, Utah State University Tom Monaco, USDA-Agricultural Research Station Kari Veblen, Wildlands Resources Department, Utah State University
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Sandy Loam bottoms, Alkali sacaton
Steep and shallow loamy hillsides, Salina wildrye
Land grouped by:
• Soil type
• Landscape position
• Climate
• Hydrology
• Potential natural plant communities
Slide by Jamin Johanson, NRCS
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Steep and shallow loamy hillsides, Salina wildrye
Sandy Loam bottoms, Alkali sacaton
Slide by Jamin Johanson, NRCS
Different potential plant communities across different sites
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Ecological Sites: A Tool for Effective
Management
Ecological Site-Based Management
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Ecological Site-Based Management
Experimental Framework
Shrub Reduction • Herbicide Application • Mowing
Herbaceous Understory Increase • Broadcast Seeding
8 Ecological Sites
Landscape scale & Small-plot scale
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Goal 1
Determine the magnitude of shrub reduction in response to herbicide and mowing, and rate of recovery of four target shrubs in the Great Basin study area.
Research Objectives
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Goal 2
Determine the magnitude and duration of herbaceous species increase following reduction of four target shrubs in the Great Basin study area.
Research Objectives
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Goal 3
Evaluate how outcomes of shrub management tactics vary due to Ecological Site, at the small plot scale and the landscape scale.
Research Objectives
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Cedar Fort: Snakeweed Gutierrezia sarothrae
Birdseye: Rubber Rabbitbrush Ericameria nauseosus
Bear Lake: Sagebrush Artemisia spp.
Park Valley: Greasewood Sarcobatus vermiculatus
Study Area
Two Ecological Sites per ranch
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Experimental Design
Ecological Site B
Ecological Site A
Untreated Control
Sampling transects
Herbicide Treatment
1½ -acre study area
80-400 Acres
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Location
Dominant
Shrub Herbicide
Application
Rate Ecological Sites
Associated Soil
Series
Upland Loam
(Wyoming Big Sagebrush) Kerl Loam
Upland Stony Loam
(Black Sagebrush) Lonjon Silt Loam
Semidesert Loam
(Wyoming Big Sagebrush) Lembos Loam
Semidesert Alkali Loam
(Black Greasewood) Kunzler Loam
Upland Shallow Hardpan
(Pinyon-Utah Juniper)
Borvant Cobbly
Loam
Upland Stony Loam
(Mountain Big Sgebrush)
Donnardo Stony
Loam
Upland Loam
(Basin Big Sagebrush) Ant Flat Loam
Upland Loam
(Mountain Big Sagebrush) Doyce Loam
Tebuthiuron 20P
(Alligare)
Escort XP
(DuPont)
Cimmaron Max
(DuPont)
Picloram + D
(Alligare)
Low
(2.5lbs/acre)
Med-High
(2.0 oz/acre)
Low
(1.0 oz/acre)
Med-High
(4 pts/acre)
Park Valley
Bear Lake
Cedar Fort
Birdseye
Black
Greasewood
Wyoming Big
Sagebrush
Snakeweed
Rubber
Rabbitbrush
Site Summary
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Shrub Density
• 1m x 20m belt transect
• By age class
• Live vs. dead
Herbaceous Cover, Frequency
• Ten, ¼ m2 quadrats
Herbaceous Biomass
• Two ¼ m2 quadrats/year
Landscape Scale Measurements
2013 - 2016
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Small Plot Experimental Design
SP RE CM CT KI CM RE CT KI SP
KI RE SP CT CMO
RE CM KI SP CT
CM SP RE KI CT KI SP CT RE CM
20'
CT CM KI RE SP KI CT CM SP RE
40'
20'
10'
Rep 1
Rep 2
Rep 3
Rep 4
Gate
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Small Plot Experimental Design
SP CM KI RE CT RE KI CT SP CM
Mowing
Improved Seed Mix
Non-seeded Control
Standard Seed Mix
Code Trade name Active Ingredient
SP Spike Tebuthiron 20P
CM Cimmaron Max2,4-D, Dicamba, +
Metsulfuron methyl
KI Kindra Aminocyclopyrachlor
+ 2,4-D
RE RejuvraAminocyclopyrachlor
+ Metsulfuron methyl
CT Nontreated Control
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SP RE CM CT KI CM RE CT KI SP
KI RE SP CT CMO
RE CM KI SP CT
CM SP RE KI CT KI SP CT RE CM
20'
CT CM KI RE SP KI CT CM SP RE
40'
20'
10'
Rep 1
Rep 2
Rep 3
Rep 4
Gate
5 herbicide treatments x 3 seed treatments x 2 mowing treatments x 4 replicates
= 120 plots per experimental area
In 8 Ecological Sites
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Shrub Density
• 10’ x 20’ plot
• By age class
• Live vs. dead
Shrub Cover
• 40’ Line-Intercept
Herbaceous Cover, Frequency
• Eight ¼ m2 quadrats
Herbaceous Biomass
• Eight ¼ m2 quadrats in 2016
Small-Scale Plot Measurements 2013 - 2016
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Project Progress Landscape-scale herbicide
application at each ranch (Fall 2012 - Summer 2013)
Fenced 1½ acre Experimental Areas established (Fall 2012)
Pretreatment Field Measurements (Summer 2013)
Treatment in small plots: Herbicide application and mowing (Summer 2013 – Fall 2013)
Seeding will occur in Fall 2014
Analysis is ongoing; Finalized 2017
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Field Tours of Experimental Sites 2016
USU Extension Shrubland Management Project
https://extension.usu.edu/rangelands/htm/utah-projects/utah-shrub-project
Utah Shrubland Management Handbook
• Review of Literature
• Analysis of state management datasets
• Utah Watershed Restoration Initiative
• Division of Wildlife Resources Range Trend
Outreach and Additional Aspects
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Treatments very in their capacity to reduce shrub cover and improve herbaceous understory.
Variability due to
• Ecological Site
• Biology of shrub
• Site History
Assessment of shrub manipulation treatments
implemented through Utah’s Watershed
Restoration Initiative since 2005 (T. Monaco,
unpublished data).
Management Approach Matters
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Ecological Site-Based Handbook for Shrubland Management in Utah
• Use best information available: contemporary data sets, current knowledge, up to date technology for brush management and range planting.
• Highlight how Ecological Sites influence effectiveness of range
improvement practices (for wildlife, livestock, etc).
• Use Ecological Sites to improve predictability of management
outcomes.
• Applicable for shrub-dominated sites throughout Utah
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Field Tours of Experimental Sites 2016
USU Extension Shrubland Management Project https://extension.usu.edu/rangelands/htm/utah-projects/utah-shrub-project
Utah Shrubland Management Handbook
• Review of Literature
• Analysis of state management datasets
• Utah Watershed Restoration Initiative
• Division of Wildlife Resources Range Trend
Associated Questions
• Seed Production in response to shrub management at project site
• Competitive ability of native grass ecotypes across sites/stresses
Outreach and Additional Aspects
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Project Contributors Dr. Tom Monaco, Justin Williams USDA-Agricultural Research Service
Dr. Kari Veblen Wildlands Resources Department, Utah State University
Research Cooperators
Beth Burrit, Dr. Roger Banner USU Extension
Jamin Johanson, Jamison Jewkes, Matthew Phillippi USDA Nat. Res. Cons. Service
Troy Forrest, Ashley Hansen UDAF Utah Grazing Improvement Program
Bill Kral, John Cantlon, Nevin DuPleissis DuPont
Bill Robinson, Lance Westmoreland, Rial Berry, Monty Weston Landholders
Field Assistance
Justin Chutich, Brittany Duncan, Sarahi Felix, Joe Lamb, Jessica Walker
Additional Support
Veblen Research Lab
University Agricultural Experiment Station
Ecology Center Utah State University
Wildlands Resources Dept., College of Natural Resources, Utah State University
Acknowledgements
Rebecca Mann, Wildlands Resources Dept,
Utah State University [email protected]