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AIS in Michigan:An Update on New Detections
William KeiperMI DEQ Water Resources Division
• Leaders in Environmental Stewardship• Full Partners in Economic Development• Excellent Customer Service
Water Resources Division• Protect and Monitor…
– 4 Great Lakes– 11,000 Inland Lakes– 36,000 river miles– 5 million acres of wetlands– 70,000 acres of coastal dunes…for swimming, fishing, drinking water and
healthy aquatic ecosystems.
Waterquality
Invasive species
Wateruse
Todays talk
• New invasive species in Michigan– New Zealand Mudsnail– Didymo (aka Rock snot)
• What we are doing• What can you do to help
Didymo
NZ Mudsnails
What is an invasive species?
An invasive species is defined as a species that is not native and whose introduction causes, or is likely to cause, economic or environmental
harm or harm to human health.”
Non‐native Causes harm
+ =
Invasive
Not all invasives are equal
What’s a NZ Mudsnail?
• Harmful invasive aquatic snail• Small in size • Mass produce• Asexual reproduction• Compete with native inverts• Alter food webs• Hard to kill
Native snail
New Zealand Mud Snail
Distribution
* At least 2 clones in US
Found in Michigan
• August 2015• Suspect snails• Pere Marquette River near Baldwin• Confirmed to be NZMS
Immediate Actions
• Press Release• Direct outreach• Wader wash stations
After Press Release
• Nature and extent surveys• Increase awareness• Outreach• Determine origin
Survey Results
Next Steps
• Other Rivers – 2016• Outreach • Working with volunteers• MSU project
Didymoaka “Rock Snot”
• Algae ‐ Diatom• From northern hemisphere• Massive blooms can blanket streams• Easily transported on gear• Invasive in some regions since 1980’s
What is Didymo
US Distribution: 2008
Didymo in MI• St. Marys River report in 2015• Confirmed to be didymo• Treated as an AIS• Native to Great Lakes?
Immediate response
• Press Release• Site Investigation
Results
• St. Marys Rapids = source area• Sloughing off/down stream drift
Site map
Next Steps
• LSSU Grant to study Didymo in St. Marys• Outreach and education• Understanding bloom triggers‐ Low P?
Please Report Invasive Species
http://www.michigan.gov/invasives
http://www.misin.msu.edu/
Questions?
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