Detecting invasive plants in Surrey Parks
Curtis Chance and Dr Nicholas Coops, in collaboration with the City of Surrey, are working to establish ways to improve the city’s active program to inventory and remove invasive plant species from their parks. Currently, city field staff are employed to both detect and remove the plants. However, field crew techniques vary slightly and with limited access due to difficult terrain in certain areas, inventories are not complete.
Two species of interest are Himalayan blackberry (Rubus armeniacus) and English ivy (Hedera helix). Remote sensing technologies, specifically hyperspectral imagery and light detection and ranging (LiDAR) provide opportunities to create a wall-to-wall map of invasive plant species distribution across the city’s parks and natural areas network.
Species distribution models can be produced by combining field data with the remotely sensed data and ancillary datasets. Output maps will allow parks managers to focus field crews on removal of these two species.