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The Water Soldier

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by

M Y

on 2 March 2015

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Transcript of The Water Soldier

The Water Soldier
How did it get to Canada?
• Found in 2008
• Native to Central Europe and northwestern Asia
• Is sold in Canada for water gardens and aquariums
• Illegal importation
• Dumped into waterways

What is it?
Latin name: Stratiotes Aloides
Description:
• Aquatic leaves
• Resembles a spider plant
• Sharp leaves with serrated edges
• Creates dense floating masses
• White 3-petalled flowers grow from the center
• Are buoyant during the summer
• Roots can be attached to the ground or free-floating
• Can grow to be 5m
• Leaves are often 40cm long
• Leaves are bright green

Whats the problem with it?
• Forms dense stands of floating vegetation
• Excludes other submerged and or floating plants
• Destroys aquatic fauna habitats
• Clogs waterways
• Believed to have toxic effects on plankton
• Dense populations take away from recreational activities (boating, swimming)
• Sharp edges can injure swimmers or people handling the plant

Effects on the ecosystem
Believed to have toxic effects on plankton (bioamplification)
Crowds aquatic fauna habitats
It pushes native aquatic plants out of their habitats
How is the population being controlled?
• The community was asked to comment on how to solve the problem
• Most responses recommended herbicides
• Focus is controlling the spread of the invasive plant
• The herbicide “Reward” was applied between October 22nd and October 27th of 2014
• It was applied in certain areas of Lake Seymour and Crowe Bay
• In Crowe Bay 8.3 hectares of Water soldier were treated and 42 hectares were treated in Lake Seymour
• For 2015, physical removal and the continued use of “Reward”


What can the public do to help?
• Be alert for this plant
• Learn how to identify this plant
• Avoid going fast in infested areas, the watercraft can dislodge plants carrying them into non-infested areas
• Inspect your watercraft before and after use for remains of this plant
• Report sighting to the invasive species hotline
• Avoid using this plant in your water gardens and aquariums

Organizations involved
• The federal department of Fisheries and Oceans
• The Trent-Severn Waterway National Historic Site of Canada
• The Ontario Federation Anglers and Hunters
• Lower Trent Conservation
• Ministry of Natural Resources
• Parks Canada
• Ministry of the Environment


References

• www.wildlifetrusts.org/species/water-soldier
• http://www.invadingspecies.com/get-involved/water-soldier-monitoring/
• www.ontario.ca/invasivespecies
• www.invadingspecies.com
• www.Ontarioinvasiveplants.ca
• http://www.insidebelleville.com/news-story/4034743-scientists-researching-ways-to-prevent-spread-of-invasive-plant-in-trent-river/
• http://www.watersidenursery.co.uk/shop/british-native-plants/pond-surface-plant-stratiotes-aloides-water-soldier-british-native.html
• http://www.aquapage.eu/Plants.php?detail=249
• http://www.invadingspecies.com/get-involved/water-soldier-monitoring/#

By: Malea Y
Population Changes
• The Water Soldier grows on such dense mats, it’s almost impossible to tell how many there are.

• “Our estimates are that it consists of over 22,000 plants in seven colonies that stretch from Highway 30 downstream to Hardy Island,” -Eric Snyder an invasive species biologist

• This was quoted back in 2009, since then the population could’ve have grown or stayed around the same because of the herbicide

Geographical Changes
• First found in Trent River, where it can still be found today

• Now found in Lake Seymour as well as Crowe Bay

• There have not been any sightings elsewhere so far meaning the invasive plant has not spread very much.
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