Lessons Learned: Goats, Goatgrass, Fire, and Fuel Reduction...Sarah Minnick & Pete Frye November...
Transcript of Lessons Learned: Goats, Goatgrass, Fire, and Fuel Reduction...Sarah Minnick & Pete Frye November...
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Lessons Learned:
Goats, Goatgrass, Fire,
and Fuel Reduction
Sarah Minnick & Pete Frye
November 2018
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• Introductions to:
o Goats
o Fuel Reduction
o Goatgrass
• Weed management, wildfire preparedness, grazing 2.
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• Super cute
• Eat lots of stuff
G O AT S !
3.
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• Open Space District
o 34 preserves
o 16,000 acres
o 3,400 backyards
• Coordinating with 14 fire
service agencies
• Focus of fuel reduction
o Defensible space
o Ignition prevention
o Ingress/egress
o Fuelbreaks
W I L D F I R E P R E PA R E D N E S S A N D F U E L R E D U C T I O N
4.
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• Winter annual
• High threat to annual
rangelands
• B-rated agricultural pest in
Marin
• Control mandated by the
County Agricultural
Commissioner
• Threat to serpentine
grasslands & rare species
B A R B ( E D ) G O AT G R A S S ( A e g i l o p s t r i u n c i a l i s )
5.
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• Oregon to San Diego
• Concentrations in the
Central Valley foothills
• Sparse distribution
within Coast Ranges
R E G I O N A L E X T E N T
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M A R I N C O U N T Y E X T E N T
7. Mount Burdell
Deer Island
Terra Linda/
Sleepy Hollow
Divide
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Terra Linda / Sleepy Hollow Divide
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• The largest populations of barbed goatgrass in
Marin County are on the serpentine slopes of
Terra Linda
• Serpentine grasslands are a refuge for rare
species that adapted to the harsh conditions
P R O B L E M
9.
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• Controlled burns
• Weed whipping
• Herbicide treatments
• Flaming
• Grazing
• Hand pulling
T R E AT M E N T S – I N T E G R AT E D P E S T M A N A G E M E N T
10.
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C O N T R O L L E D B U R N S
• Most effective treatment
• Can reduce large areas to hand pull sites
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C O N T R O L L E D B U R N S
• Burning in 2 successive years is best
• Ideal timing: before July when seeds drop
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2007
2008
2009
2004
2005
2010
2011
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• Difficult to burn in sparsely-
vegetated serpentine
• Limited burn days due to air
quality concerns
• Staffing constraints
• Community concerns
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W E E D W H I P P I N G
• After flowering and before seed is mature
• Large areas and difficult terrain are not feasible
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H E R B I C I D E T R E AT M E N T S
• Broadcast with Fusilade (Nov/Dec)
• Spot treat with Roundup (May)
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H A N D P U L L I N G
• Hand pull small or sparse areas
• Follow-up treatment in mow and/or herbicide areas
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I N T E G R AT E D P E S T M A N A G E M E N T
• Mow, spot spray, hand pull combination works
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H E R B I C I D E T R E AT M E N T S
• Goal of reduction in herbicide use
• Potential for secondary forb invasion
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• Burn seeds on the
ground surface
• Best in sparse vegetation
(e.g. serpentine)
• Need dry conditions to
burn through dense
thatch
• Time-intensive, large
areas not feasible
F L A M I N G
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Terra Linda / Sleepy Hollow Divide
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• Large regional grazing partnership
o Local fire protection district
o Private ranch lands
o Private school property
o Marin County Open Space District
G R A Z I N G
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Terra Linda / Sleepy Hollow Divide Rocking H
Ranch
San Domenico
School
Triple C
Ranch
Terra Linda / Sleepy Hollow
Open Space Preserve
Sleepy Hollow
Fire Protection District
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G R A Z I N G
• Total partnership: 200 acres – $171,900
• 80 acres – 125 days of grazing – $50,000
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Terra Linda / Sleepy Hollow Divide
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• 2 herds of 400 animals each
• Wether goat herd + mixed young goats/sheep
• 83 herd days + 43 herd days (April – June)
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G R A Z I N G
27.
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• Intensity and timing are important for goatgrass
• Early grazing grew back; later grazing more
effective if grazed heavy
• Potential for increased disturbance
• Too late and the goats are spreading seeds!
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• Dense areas took a long time
• Extra areas were grazed
• Some areas skipped – too dense or ran out of time
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• Herder logistics – camps, water sources/transport
• Visitor interactions – good, bad, ugly
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• Some good stuff was eaten
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• Some good stuff was eaten
• Some good stuff was eaten
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• Continue integrated mow, spot spray, hand pull
• Work with grazing to improve timing and
intensity
• Start working toward additional controlled burns
o Increased fire crew capacities
o More community awareness around benefits
of controlled burns – also more fear of fire
• Continue to partner with adjacent landowners
o Acknowledge and work to minimize trade offs
between multiple goals
o Pursue opportunities to coordinate on weed
management goals (containment, early
detection)
L O O K I N G F O R WA R D
34.
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Thank you Pete Frye
Sleepy Hollow Fire Protection District
Rocking H Ranch
Triple C Ranch
Starcreek Land Stewards
Go Native
Marin County Parks Resource Seasonals
Sarah Minnick
© 2018 MARIN COUNTY PARKS