UBC Okanagan examine to search out out the place Eurasian water yarrow is present in lakes

The UBC pilot mission within the Okanagan goals to higher establish and map places the place Eurasian water yarrow (EWM) infestation happens in giant lakes within the Okanagan Valley watershed.

If this pilot mission is profitable, it may turn out to be a mannequin for different jurisdictions to comply with of their battles with this aquatic plant or different invasive aquatic species, says UBCO affiliate professor Mathieu Bourbonnet.

Bourbonnais, with the Irving C. Barber College of Science, is overseeing the mission with the help of graduate scholar Mackenzie Clark.

The information modeling prototype makes use of topobathymetric lidar expertise, the science of concurrently measuring and recording three totally different surfaces — land, water, and submerged land as much as 20 meters beneath the water floor — utilizing onboard infrared imaging laser sensors.

Bourbonnet says having the ability to higher establish potential or small patches of yarrow will present higher administration instruments for the Okanagan Basin Water Authority’s water yarrow harvesting program, which presently runs about $800,000 a yr, to attempt to management development and restrict injury. invasive aquatic plant.

It may additionally probably goal particular water yarrow habitats earlier than they get uncontrolled close to lowland lake areas that Surroundings Canada considers susceptible to Rocky Mountain Vary mussel conservation.

He stated EWM has been a formidable invasive aquatic plant species that must be managed because it was launched into the Okanagan Valley lake system about 40 years in the past.

It additionally demonstrated to the Water Board the should be strict in attempting to keep away from the introduction of zebra mussels and quagga into the lake system.

Like water yarrow, there isn’t any answer for eradicating mussels as soon as they’ve entered the lake system. It’s a longtime underwater plant present in shallow lakes all through North America.

EWM originated in Asia, Europe and North Africa and unfold quickly, launched to North America with ship ballast water or aquarium actions.

Bourbonnais stated a lake infested with water yarrow impacts biodiversity and meals webs depending on the lake’s habitat, alters water temperatures, and impacts its leisure use for swimmers and boaters.

“The impression of invasive species on our lake water programs is value billions of {dollars} throughout the nation. It positively has an impression on each the atmosphere and the economic system,” he stated.

The fieldwork for the pilot mission can be accomplished by early spring, he stated, and he hopes they’ll present knowledge from which to find out areas to reap, resulting in a allow utility course of subsequent yr.

“The purpose is for the Okanagan Basin Water Board to make use of the information generated from this analysis mannequin and liaise with the province and the federal authorities on learn how to transfer ahead,” he stated.

“We hope this can assist information technique for the place to ship lake cultivators to drag out vegetation.”


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