Starry stonewort: A new aquatic invasive species in...
Transcript of Starry stonewort: A new aquatic invasive species in...
![Page 1: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/1.jpg)
Starry stonewort: A new aquatic
invasive species in Minnesota
Dan Larkin
April 15, 2016
Photo: Dan Larkin
![Page 2: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/2.jpg)
![Page 3: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/3.jpg)
Overview
• Introduction to starry stonewort
• Applied research on starry stonewort
– Risk assessment
– Control
• Takeaways
– Identification
– Citizen science opportunities
Photo: Dan Larkin
![Page 4: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/4.jpg)
Starry stonewort
Nitellopsis obtusa
• New AIS in Minnesota
• Charophyte (green
algae)
Photo: Paul Skawinski
![Page 5: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/5.jpg)
Starry stonewort
• Native to Europe, Asia
– Endangered in Japan
– Special concern in UK
(JNCC 2010,
Kato et al. 2014)
Photo: Scott Brown
![Page 6: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/6.jpg)
Starry stonewort
• Closely related to
stoneworts /
muskgrasses native
to Minnesota
McCourt et al.
1996
Chara aspera C. contraria Nitella flexilis
![Page 7: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/7.jpg)
Starry stonewort
• Relatively new invader
• Quickly gaining ground
• Increasing concern for AIS management
![Page 8: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/8.jpg)
Starry stonewort
• Relatively new invader
• Quickly gaining ground
• Increasing concern for AIS management
![Page 9: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/9.jpg)
Starry stonewort
• Relatively new invader
• Quickly gaining ground
• Increasing concern for AIS management
![Page 10: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/10.jpg)
Starry stonewort
• Relatively new invader
• Quickly gaining ground
• Increasing concern for AIS management
![Page 11: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/11.jpg)
Starry stonewort
• Lake Koronis (Stearns Co.)
Photos: Google Earth
![Page 12: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/12.jpg)
Starry stonewort
• Reported as highly
invasive in some areas
• Reductions in plant
diversity
• Potential impacts to
spawning habitats
(Pullman and Crawford
2010, Sleith et al. 2015) Photo: Paul Skawinski
![Page 13: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/13.jpg)
Starry stonewort
Michigan
• 128 lakes
• e.g., L. Houghton
– 0 – 3,000 acres in 5y (M. Heilman pers. comm.)
– Frequency nearly
tripled 2013–2015 (Progressive AE)
Photo: Google Earth
![Page 14: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/14.jpg)
Starry stonewort
• How at risk is Minnesota?
• What can we do?
– Limited ecological knowledge
– Limited control toolkit
– High uncertainty
Photo: Dan Larkin
![Page 15: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/15.jpg)
Invasion process
Prevention
Species
absent
Eradication
Rare,
localized
Containment
Rapidly
increasing
Long-term
management
Widespread and
abundant
Invasion stage
(time→)
Ab
un
da
nc
e
![Page 16: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/16.jpg)
Invasion process
Prevention
Species
absent
Eradication
Rare,
localized
Containment
Rapidly
increasing
Long-term
management
Widespread and
abundant
Invasion stage
(time→)
Ab
un
da
nc
e
curlyleaf
pondweed
hydrilla
![Page 17: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/17.jpg)
Invasion process
Prevention
Species
absent
Eradication
Rare,
localized
Containment
Rapidly
increasing
Long-term
management
Widespread and
abundant
Invasion stage
(time→)
Ab
un
da
nc
e
starry
stonewort
×
![Page 18: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/18.jpg)
Invasion process
Prevention
Species
absent
Eradication
Rare,
localized
Containment
Rapidly
increasing
Long-term
management
Widespread and
abundant
Invasion stage
(time→)
Ab
un
da
nc
e
starry
stonewort
Little impact so far
But high uncertainty
about the future
×
![Page 19: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/19.jpg)
Overview
• Introduction to starry stonewort
• Applied research on starry stonewort
– Risk assessment
– Control
• Takeaways
– Identification
– Citizen science opportunities
Photo: Dan Larkin
![Page 20: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/20.jpg)
Risk assessment
• Ecological niche modeling
– Collaboration with Nick Phelps (MAISRC /
Vet Med) and postdoc Luis Escobar
![Page 21: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/21.jpg)
Risk assessment
• Ecological niche modeling – Occurrences from native and invaded ranges
– Model distribution in relation to climate and environmental data
– Predict potential for range expansion
http://www.unil.ch/
![Page 22: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/22.jpg)
Risk assessment
• Ecological niche modeling
Escobar et al. In review
![Page 23: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/23.jpg)
Risk assessment
• Ecological niche modeling
– Exploiting “novel” climate niche in invaded range
Escobar et al. In review
![Page 24: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/24.jpg)
Risk assessment
• Predictions of suitable habitat
Escobar et al. In review
![Page 25: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/25.jpg)
Risk assessment
• As-yet uninvaded areas (Mid-Atlantic, Great Plains, Intermountain West) potential high suitability
Escobar et al. In review
![Page 26: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/26.jpg)
Risk assessment
• Minnesota may have limited suitability
Escobar et al. In review
![Page 27: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/27.jpg)
Next steps
• Investigate these
predictions through:
– Finer-scale risk
assessment for MN lakes
– Climate tolerance
experiments
– Desiccation tests
Figure: DH Montgomery, Pioneer Press
![Page 28: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/28.jpg)
Scaling down to MN lakes
• Chemistry of SSW lakes:
– Fairly clear/low-nutrient
• Oligo-meso to mesotrophic
(S. Brown, MLSA)
– Alkaline (Sleith et al. 2015)
– High calcium carbonate
(Fuller & Taricska 2011)
• Positive feedbacks? (Kufel
& Kufel 2002)
Charophyte meadow in Poland Photo: Piotr Panek
![Page 29: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/29.jpg)
Scaling down to MN lakes
• Chemistry of SSW lakes:
– Fairly clear/low-nutrient
• Oligo-meso to mesotrophic
(S. Brown, MLSA)
– Alkaline (Sleith et al. 2015)
– High calcium carbonate
(Fuller & Taricska 2011)
• Positive feedbacks? (Kufel
& Kufel 2002)
What lakes is it found in now?
What are physiochemical conditions of these lakes?
Which Minnesota lakes overlap with these conditions?
![Page 30: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/30.jpg)
Scaling down to MN lakes
• Chemistry of SSW lakes:
– Fairly clear/low-nutrient
• Oligo-meso to mesotrophic
(S. Brown, MLSA)
– Alkaline (Sleith et al. 2015)
– High calcium carbonate
(Fuller & Taricska 2011)
• Positive feedbacks? (Kufel
& Kufel 2002)
What lakes is it found in now?
What are environmental conditions of these lakes?
Which Minnesota lakes overlap with these conditions?
![Page 31: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/31.jpg)
Scaling down to MN lakes
• Chemistry of SSW lakes:
– Fairly clear/low-nutrient
• Oligo-meso to mesotrophic
(S. Brown, MLSA)
– Alkaline (Sleith et al. 2015)
– High calcium carbonate
(Fuller & Taricska 2011)
• Positive feedbacks? (Kufel
& Kufel 2002)
What lakes is it found in now?
What are environmental conditions of these lakes?
Which Minnesota lakes overlap with these conditions?
![Page 32: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/32.jpg)
Climate tolerance
• Testing climate predictions
– Correlative models
– Nature full of surprises
– Is MN climate limiting for
starry stonewort?
Escobar et al. In review
![Page 33: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/33.jpg)
Climate tolerance
• Growth experiments
– Culture starry stonewort
in new MAISRC lab
– Mimic winter conditions
predicted to be range-
limiting
• Duration
• Photoperiod
• Light quality
![Page 34: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/34.jpg)
Climate tolerance
• Current and
future climate
– Typical
– Severe
– Mild
– Variable
(Hellmann et al. 2008, US
EPA 2008, NOAA 2016) Photo: MAISRC Facebook
![Page 35: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/35.jpg)
Spread risk
• Dioecious, only males
identified in U.S. to date
• Spread by fragments
and “bulbils”
• Concentrated near
accesses / high-use
areas
Sleith et al. (2015)
![Page 36: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/36.jpg)
Spread risk
• Unintentional human
movement fragments
and bulbils
• If contaminated boat…
how long does material
stay viable?
Photo: NYS DEC
![Page 37: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/37.jpg)
Spread risk
Desiccation trials
• Undergrad Carli Wagner
• Environmentally controlled chambers
• Still able to grow after 12h, 24h, 2d, 5d….?
• Different materials
– Fragments
– Bulbils
– Different sized clumps
Photo: Milwaukee Journal Sentinel
![Page 38: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/38.jpg)
Spread risk
Desiccation trials
• Different materials
– Fragments
– Bulbils
– Different sized clumps
Photo: Milwaukee Journal Sentinel
![Page 39: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/39.jpg)
Overview
• Introduction to starry stonewort
• Applied research on starry stonewort
– Risk assessment
– Control
• Takeaways
– Identification
– Citizen science opportunities
Photo: Dan Larkin
![Page 40: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/40.jpg)
Control
• Difficult to control
starry stonewort
– “Haircut” w/ dead
upper but live lower
parts, able to resprout
Pullman and Crawford 2010
![Page 41: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/41.jpg)
Control
• Difficult to control
starry stonewort
– “Seedbank” of bulbils
left behind
– Herbicide sensitivity of
bulbils unknown
Photo: www.mymuskegonow.com/
![Page 42: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/42.jpg)
Control
• Testing sensitivity of
plants and bulbils to
different herbicides
Photo: www.mymuskegonow.com/
![Page 43: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/43.jpg)
Control
• Testing sensitivity of
plants and bulbils to
different herbicides
– Small-scale, high-
replication assays
Photo: MAISRC Facebook
![Page 44: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/44.jpg)
Control
• Testing sensitivity of
plants and bulbils to
different herbicides
– Small-scale, high-
replication assays
• Chelated copper
formulations
• Non-copper herbicides
(diquat, alkylamine
endothall)
Photo: MAISRC Facebook
![Page 45: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/45.jpg)
Control
• Testing sensitivity of
plants and bulbils to
different herbicides
– Larger-scale, more
realistic tests of
promising treatments
Photo: NOAA NCCOS
![Page 46: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/46.jpg)
Control
• Testing non-target
effects on native
charophytes and
vascular plants
Photos: Ville Karvinen, articulo.mercadolibre.com.ec/,
Gary Fleming, C. B. Hellquist)
![Page 47: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/47.jpg)
Extension
• Starry stonewort
working group (June)
– Bringing together
experts from around the
country
Photo: Dan Larkin
![Page 48: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/48.jpg)
Extension
• Starry stonewort
working group (June)
– Synthesizing what is
known: ecology,
impacts, management
– Setting research
agenda Photo: Dan Larkin
![Page 49: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/49.jpg)
Extension
• Starry stonewort
working group (June)
– Synthesizing what is
known: ecology,
impacts, management
– Setting research
agenda
![Page 50: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/50.jpg)
Overview
• Introduction to starry stonewort
• Applied research on starry stonewort
– Risk assessment
– Control
• Takeaways
– Identification
– Citizen science opportunities
Photo: Dan Larkin
![Page 51: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/51.jpg)
Identification
• May grow dense, tall
– Can have robust,
plant-like appearance
underwater
Photo: Paul Skawinski
![Page 52: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/52.jpg)
Identification
• May grow dense, tall
– Can form thick mats
Photos: Dan Larkin,
Minnesota DNR
![Page 53: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/53.jpg)
Identification
• Whorls of 4-6
long branchlets
Photo: Paul Skawinski
![Page 54: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/54.jpg)
Identification
• Small, star-
shaped bulbils
Photos, L-R: Dan Larkin, MN DNR, Paul Skawinski
![Page 55: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/55.jpg)
Volunteer/citizen science opportunities
AIS Detectors AIS Trackers
![Page 56: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/56.jpg)
AIS Detectors program
• Front line for AIS early
detection
• Network of trained
volunteers
• Watershed focus
Sue Galatowitsch (MAISRC Director) and
Eleanor Burkett (Extension Educator)
![Page 57: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/57.jpg)
AIS Trackers program
• Monitoring AIS
population changes in
response to
management
• Use findings to guide
AIS management
![Page 58: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/58.jpg)
Photo: Dan Larkin
Acknowledgments
• Funding: Environment and Natural Resources
Trust Fund
• Collaborators: Luis Escobar, Nick Phelps,
Huijie Qiao
• Undergraduate researcher: Carli Wagner
![Page 59: Starry stonewort: A new aquatic invasive species in …freshwater.org/wp-content/uploads/2016/05/Dan-Larkin-Starry-Stone...Starry stonewort: A new aquatic invasive species in Minnesota](https://reader034.fdocuments.in/reader034/viewer/2022051723/5ab0b5877f8b9a7e1d8b7af6/html5/thumbnails/59.jpg)
Photo: Dan Larkin
For more information
MAISRC
• http://www.maisrc.umn.edu
• Sign up for our newsletter
• Follow @AISResearchMN on Twitter
• And like us on Facebook!
Koronis Lake Association (see Kevin Farnum)
• Starry stonewort public information meeting
• Presentation by Prof. John Rodgers, Clemson University
• April 26, 2016 at 7:00 PM
• Paynesville High School Auditorium