Invasive Species

Alberta lakes are threatened by invasive species. These are non-native species that grow along the shorelines and aquatic species that live in the water.

If you’re interested in helping out with monitoring for invasive mussel species on your own property, click here. Looking to upload your substrate results? Simply report results here!

Why are invasive species a threat?

They can damage your lake by:

  • Reducing the diversity or abundance of native species or the ecological stability of the lake environment
  • Impeding use of the lake for recreational, agricultural, or commercial activities dependent on water

Aquatic Invasive Species, in particular, are a threat to the economy especially to the agriculture, tourism, and recreation sectors. They destroy natural lake ecosystems and fisheries, and cost millions of dollars each year.

The species of greatest concern in Alberta currently are:

  • Dressenid mussels: Quagga and Zebra mussels
  • Aquatic Weeds: Eurasian Water-milfoil, Flowering Rush

Other aquatic invasive species of concern including emergent, submerged and shoreline plant species can be seen below:

  • Salt Cedar Salt Cedar
  • purpleloosetrife1 purpleloosetrife1
  • Hydrilla Hydrilla
  • Flowering Rush3_good Flowering Rush3_good
  • CurlyleavedPondweed1 CurlyleavedPondweed1
  • eurasianwatermilfoil1 eurasianwatermilfoil1
  • HimBalsam2 HimBalsam2
  • salt cedar 2 salt cedar 2
  • purpleloostrife2 purpleloostrife2
  • FloweringRush3 FloweringRush3
  • HimBalsam1 HimBalsam1
  • curly-leaf-pondweed curly-leaf-pondweed
  • FloweringRush2 FloweringRush2

How do Aquatic Invasive Species spread?

Aquatic Invasive Species are primarily spread through the transportation of watercraft from infected waters to unaffected areas. Eurasian watermilfoil is found in BC lakes and throughout the USA. Mussel infected lakes have been found in Manitoba (Lake Winnipeg), Utah, South West USA, and eastern North America. Boaters are discouraged from transporting boats from these areas to Alberta lakes.

Many shoreline invaders are ornamental plants that have escaped from people’s gardens.

Does Alberta have aquatic invasive species? What can I do?

Invasive Mussels have not been detected yet in Alberta lakes – let’s keep it that way. Prevention is the most effective way of managing Aquatic Invasive Species.

Flowering Rush is the only aquatic invasive plant currently found in Alberta. When traveling to different lakes ensure that your boat is free of aquatic plant debris.

What can I do to prevent the spread of Aquatic Invasive Species?

    • Learn to identify water invaders
    • Anglers and Boaters: Clean, Drain and Dry your boat and equipment before departing a site. Aquatic Invasive Species like quagga and zebra mussles can spread quickly and can live out of water for up to 30 days. Weeds like Eurasian watermilfoil spread by tiny fragments attached to boats and gear. Learn more from Alberta Environment & Parks.
    • Off-highway Vehicle Users: Remove any vegetation or clumps of mud or debris from the vehicle and thoroughly clean the underside of vehicles, tires and parts before moving to another area.
    • Purchasers of Recreational Equipment from Outside Alberta: help prevent the spread of harmful freshwater mussels and other invasive alien species to Alberta, clean and decontaminate boats and off-highway vehicles (OHVs) purchased or used out of province before returning home.
    • Gardeners and Lakeside Landowners: Learn about invasive plants before going to gardening stores and do not buy plants or seed mixes that may become invasive. download weedwise garden brochure
    • If you suspect you have an invasive species in or around your lake or on your lake property, you can call the nearest Fish and Wildlife office at 310-0000.

Where do I call to report something suspicious on my boat or equipment?

1-855-336-2628 (BOAT)

What is ALMS doing about aquatic invaders?

We are monitoring for aquatic invasive species as part of our LakeWatch program. ALMS is involved in education and outreach on this issue and can provide you with information about invasive species at your lake. The map below shows locations where LakeWatch and other initiatives around the province have recently monitored for juvenile invasive mussels (veligers).

If you would like to monitor your lake please contact us and we can provide equipment.

What additional resources can I access?

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