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Invasive plants in our coastal sand dunes

The first rows of coastal dunes function as a natural barriers against floods following sea level rise. Marram grass is here-in a keystone species as its ts matted roots help to stabilise sand dunes and allowing them to grow up. Exotic plant species are currenly invading our coastal dunes, and have a negative impact on the performance of this highly beneficial grass. 
Help us mapping these invasives!