hiding in plain sight · 2017. 9. 18. · hiding in plain sight s. galatowitsch& j. bohnen...
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Hiding in Plain Sight
S. Galatowitsch & J. Bohnen
University of MN--MAISRC—September 13 2017
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Which is the invasive Phragmites?
Native Invasive
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What makes
Phragmites invasive?
How did it get here?
What might it affect?
Can it be controlled?
How can you help?
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• Habitat loss for
water birds
• Alters river corridors
• Reduces wetland
biodiversity
• Alters water use and
access.
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• Now found in all lower 48 states and
all Canadian provinces.
• Colonizes natural wetlands as well
as human-made habitats such as
ditches.
• 18% of MN counties have no record
of invasive Phragmites.
• 82% of MN counties have one or
more records of invasive Phragmites.
• 3% of MN counties have 10+
documented occurrences.
EDDMapS 2017
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Kettenring et al. 2011
What we know from the earliest invasions
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New colonies Established Populations
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Photos: J. Bartok, UK Wildlife
How can risks be minimized?
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MN PHRAG
Increase awareness
Find MN populations
Develop & deploy
effective control
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What MN PHRAG volunteers do
• Locate potential infestations
• Determine if Phragmites is
native or invasive
• If invasive, submit report & samples
• Samples genetically tested
• Report is added to EDDMapS
Find 5 images corresponding to the
bullets—click animation to illustrate
each point.
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Find 5 images corresponding to the
bullets—click animation to illustrate
each point.
MN PHRAG—control strategies for Minnesota
• Lessons learned elsewhere
• Response options – established
populations (seed producing)
• Response options – new colonies
• Situation-dependent
• Minimizing non-target risks
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Now is a good time to spot invasive Phragmites
Sign up at the showcase or
Contact Julia Bohnen at
[email protected] of Packet available at the showcase
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MN PHRAG is funded by:
Questions?