Range Point- Invasive Species Eradication Project
Bird Vetch under the spotlight!
In 2018, the Yukon Invasive Species Council (YISC) has made Bird Vetch its priority. The largest weed pull project took place at Range Point. Located close to downtown Whitehorse, this trail is a popular recreation area and is crossed by the Yukon River and McIntyre Creek which are salmon bearing waters. Thus, Range Point is of great ecological and social value and it is important to maintain its ecosystem healthy.
Bird Vetch is a perennial plant with numerous soft stems and compound leaves with tendrils. The tendrils allow this plant to attach to any support including herbaceous vegetation which can get suffocated by Bird Vetch. Because this species spreads very efficiently via seeds and by underground horizontal rootstocks, infestations grow rapidly.
Once it is established, Bird Vetch is difficult to eradicate. The restoration of the natural biodiversity requires an effort that spans over several years. Hand-pulling can be effective for small infestations, but the area needs to be monitored closely and treated for multiples years. For larger infestation, mowing and herbicide application can be effective.
In 2017, during the initial year of the Range Point project, YISC mapped invasive plants, removed and disposed of a layer of topsoil and invasive plants, pulled invasive plants and collected native seeds of species such as yarrow, locoweed and fireweed. In 2018, YISC, along with numerous volunteers, led three Bird Vetch weed pulls at Range Point. During the last pull, YISC conducted an experiment; volunteers pulled one half of the area, on the other half of the site, test plots were delineated, and a concentrated vinegar solution was applied to each Bird Vetch plant with the goal of weakening the roots. Over a third area, topsoil was spread to deeply cover any root fragments possibly present in the soil and the native seeds that were previously collected were scattered. This experiment will allow YISC to determine which methods are most effective in controlling the proliferation of Bird Vetch.
The fast-approaching spring will reveal the degree to which our efforts have been successful. Range Point is YISC’s first major eradication project and is a success thanks to the collaboration of the public, the City of Whitehorse, Ta’an Kwäch’an Council and to the Environmental Damages Fund as our funder. YISC hopes that native vegetation will soon take over Range Point! Stay tuned for updates about our Range Point project.
Contact info@yukoninvasives for more info.