a hydrilla project in ohio’s lake erie basinhydrillacollaborative.com/content/files/us ace glhc...
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A Hydrilla project in
Ohio’s Lake Erie Basin
Detection, Control, and Prevention
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I. Introduction
II. Hydrilla in CM
III.Detection
IV.Control
V. Prevention
VI.Conclusion
Itinerary 2
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•18 Reservations
• Founded in 1917
• 23,000+ acres
• Emerald Necklace
around Cleveland
• Three marinas
• 10-15% wetlands
• 100+ sites, checked
annually for hydrilla
Cleveland Metroparks
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Cleveland Metroparks Hydrilla Discovery
Greathouse Wetlands, West Creek Reservation, Parma, Ohio 2011 4
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Infestations
• Hydrilla first detected in 2011
• Accidentally moved w/ P. cordata
• High retention sites
• 90+ sites surveyed in 2012
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Infestations
• Sediment curtain piloted
• Dredge of wetlands considered
• Herbicide test plots created
• Restricted fishing, swimming, boating at Wallace Lake
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Lake Erie Basin
• outreach/training • joint surveys • shared resources • fund, treat s d d25 new acres
Early Detection and Rapid Response in Lake Erie Basin
Cleveland Metroparks
Cuyahoga AOC
• expanded detection • collaborate
CM Hydrilla Project (2017-2018)
• 100+ sites • 23,000+ acres
GL – 00E01923 7
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Detection
Milton Bradley 8
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219 sites: 116 external sites 103 internal (CM) sites Prioritized: publicly accessible waterbodies human interest points (i.e. boat launch) downstream of infested sites 9
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219 sites: 116 external sites 103 internal (CM) sites Prioritized: publicly accessible waterbodies human interest points (i.e. boat launch) downstream of infested sites 10
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Methods: Detection June - October
Rake Tosses
Boat surveys
Wader surveys
Sediment (tuber) sampling
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Photo and physical vouchers
Stored at several Ohio herbaria
Rite in the rain paper
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Year Funding source(s) Herbicide Cost
2011 CM operating budget Reward, Cutrine Plus $39.10
2012 ODNR, CM operating budget Reward, Cutrine Plus, Sonar
$2,794.02
2013 ODNR, CM operating budget Sonar AS, Sonar Q $12,820.39
2014 ODNR, CM operating budget Sonar Genesis $14,448.96
2015 ODNR, CM operating budget Sonar One, Sonar AS, Sonar Genesis
$35,575.00
2016 ODNR, CM operating budget Sonar One, Sonar AS $33,475.00
2017 GLRI Sonar One, Sonar AS, Sonar H4C
$34,117.00
2018 GLRI, CM operating budget Sonar One, Sonar AS, Sonar H4C
$33,475.00
CM – Cleveland Metroparks ODNR – Ohio Department of Natural Resources GLRI – Great Lakes Restoration Initiative
Contractor and Herbicide Funding
Total: $166,771.47
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Records in 29 states, 20171
1EDDMapS
Hydrilla Distribution
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Control Three examples
Cleveland Metroparks Parma Medina
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Greathouse Wetland s 2 - 4 feet deep Hydrologically dynamic accept runoff from a capped landfill Flood in spring Dry in the summer Challenge to maintain fluridone concentrations Now use Sonar H4C, results encouraging
Hydrilla in shallow wetlands
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Greathouse Wetlands Sonar H4C
May – October Fluidone 6ppb, target
FasTESTs every ~ two weeks
Wallace Lake Sonar AS
Control
2017 charts courtesy of 17
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Tuber sampling in Cleveland Metroparks
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Wallace Lake Sanctuary Marsh Sunset Pond Greathouse Upper
Greathouse Lower
Washout Wetlands
Blue Heron Marsh
Sprouted + Unsprouted Hydrilla Tubers in Cleveland Metroparks
2014
2015
2016
2017
2018
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Dr. Rob Richardson, US ACE Great Lakes Hydrilla Collaborative, 2018
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Cleveland Metroparks: Winding down treatment and monitoring
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Parma, Ohio, private residence Backyard pond feature ~25 square feet 3 feet deep
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8-8-18
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Control: Physical Removal
Homeowner correctly identified hydrilla, found CM through Google search
Provided homeowner list of native plants
Hydrilla free so far…
Hydrilla tuber in typha root wad Removed all vegetation, vacuumed clean
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Medina, Ohio
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Medina Co. 8-30-18
1.89 acres 9 feet max depth ~5 foot avg 90-95% hydrilla coverage 33 core samples = 99 tubers
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A different perspective on hydrilla
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Control: Herbicides
Nautique: ~1.5 gallons per surface acres Sonar One: 30 ppb targeted Contact herbicide to damage, facilitate better uptake of Sonar Discovered 8-28-18, applied on 9-24-18 Set to revisit every 15 days Did not apply Nautique, Needed to recheck safety protocol
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Tubers pulled from waders
8-8-18
Prevention
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Prevention: Decontamination
Virkon, 3% bleach solution
Clean between sub watersheds
Distributed kits to partners
Promote national programs
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9-8-18 8-8-18
Prevention: Detective Work
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Prevention: Detective Work
Confirmed hydrilla Reported to ODA Still a need to human Intervention & enforcement
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Worked with 43 landowners from 2017 - 2018 - joint surveys
- distributed AIS guides
Work closely with Ohio Sea Grant
Detection and decontamination kits in 2018
Crooked River Cooperative Weed Management Area
Upload observations to USGS, GLANSIS, EDDMapS, iNaturalist
Prevention: Education and Outreach
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Other AIS detected by Cleveland Metroparks
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Leveraged CM volunteers – “Hydrilla Hunters” 1. Investigate waterbodies 2. Toss small rakes 3. Identify hydrilla, share observations with CM Three site reports to date
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Early Detection and Rapid Response in Lake Erie Basin
Ohio’s investment in hydrilla management
$102,704.41*
$316,830
$143,900
$563,434.41
Contractor and herbicide
GL- 00E01923
2019 ODNR funding
*To avoid double counting, contractor/herbicide costs from GL – 00E01923 removed from cost
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Review
1.) Cleveland Metroparks hydrilla project funded through 2019 - ready to stop proactive herbicide treatment at many CM sites 2.) Easily accessible data helps everyone - range, abundance, occurrences… Better able to stop the spread with accurate, h k timely observations 3.) An educated network of AIS detectors with reporting pathways is critical - share your observations with non-scientists - find a bigger voice (social network, press releases) 4.) Great Lakes Hydrilla Collaborative help to close aquaculture hydrilla vector - empowered, aware consumer culture 5.) Decontamination protocols are important, replicable
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Kyle Lanzer, Cleveland Metroparks 39
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Mark Warman, Hydrilla Project Coordinator Cleveland Metroparks 4550 Valley Parkway
Fairview Park, Ohio 44126 216.346.2234
Thank You Claire Weldon
Grant Manager Jennifer Hillmer
Quality Assurance Manager
Kerrie Bercher, Shannon Hustosky, Scott McDougald, Scott Nelson Hydrilla Strike Team
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A Hydrilla project in
Ohio’s Lake Erie Basin
Detection, Control, and Prevention
Great Lakes Restoration Initiative
GL- 00E01923
2017-2018
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Jeff Reibe, Naturalist, Cleveland Metroparks, Artist
Hydrilla caricature
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Angela Oster, Independent Artist in Rocky River, Ohio
Hydrilla alien invader