Invasive
species (also called "non-indigenous" or "non-native") are
those that adversely affect the habitats and bioregions they invade
economically, environmentally, and/or ecologically. With many invasive species,
once they have become established, they are tremendously difficult to
eliminate. Further, some invasive species can have adverse effects on other
local flora through harbouring disease or toxins.
Here on the reserve, we complete invasive species
removal tasks on a weekly basis in an attempt to try and stay on top of any
issues and prevent invasives spreading. For the smaller flora species we can
simply cut them done or complete a controlled burn to kill them off. For the
larger trees, it is not ideal to cut them down as the seeds are likely to
disperse and grow. Instead, we ‘ring bark’ the tree so that it dies. By
removing a ring of bark around the whole circumference of the tree trunk, water
and nutrients can no longer by passed up from the roots to the rest of the tree,
and so it quickly dies off. Below you can see a couple of examples of trees that we have ring barked.
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