Bunchberry Dogwood (Cornus canadensis)
When I first arrived on Haida Gwaii (Queen Charlotte Islands) I took a job as a research assistant with a crew that was working with introduced species. I knew about introduced species but I was not aware of their impact on native species and especially on islands.
Fairyslipper (calypso bilbosa)
Islands often have rare or genic specific species which are found nowhere else in the world therefore making them vulnerable to extinction by invasive species
Visitors often comment on how beautiful the forests of Haida Gwaii are with all their moss however this is a result of introduced deer which dine on the understory.
The above photos show the difference between forests of Haida Gwaii on an island with deer (left) and on an island without deer (right). Photos courtesy of RGIS
Scotch Broom (Cytisus scoparius)
Other destructive forces are introduced plants which are fast spreading and change the chemistry of the soil therefore killing off native plants and taking over. Scotch broom was introduced by settlers in the early 20th Century.
BC Parks has a vigorous removal program but if individual property owners don't "buy in" the problem is an on-going one.
Wild Strawberry(Fragaria vesca)
The lands of Haida Gwaii are home to endemic species
Grey beach peavine (L. littoralis)
which have been used for centuries by First Nation peoples for food and medicinal purposes.
Seashore Lupine (Lupine Littoralis)
With the lose of these plants due to man's carelessness by introducing animals and plants many of these unique plants have and will become extinct.
Early Blue Violet (Viola adunca)It is important to know what you are planting in your gardens, they may look lovely but can change our world as we know it.
Western Bitter-Cress (Cardamine occidentalis)
The only plant in this series of photos that is introduced is the Scotch Broom, all the others are native to the islands.
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