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COWI has used its Unmanned Aircraft Vehicle (UAV) to map the growth of rosehip along the west coast of Denmark (Jutland), with the purpose to study the occurrence of a particular species.
The project was carried out for the Danish Nature Agency who needed to create an overview of an invasive species of rosehip named Rosa Rugosa, as this particular species is considered a threat to the natural environment of the sand dune landscape.
Since the 1950s, the invasive rosehip, Rosa Rugosa, has slowly spread along the west coast of Denmark concurrently with the development of holiday cottage areas.
The Danish Nature Agency is working continuously to control the Rosa Rugosa. But as the species has gradually spread to 1,100 hectares of sand dunes and moorland, identifying and eradicating the plant requires a considerable amount of work.
In fall 2013, COWI was asked to map and identify the invasive species of rosehip growing along the west coast of Denmark. The size of the area was approx. 10,000 hectares, and in 2007 the Nature Agency spent around 5 weeks in the field localising approx. 2,700 occurrences of the plant in the sand dune area.
By using an UAV, these areas were mapped in three days during mid-September 2013. Subsequently, the occurrence of the species was verified with the use of advanced software.
After the mapping process, the client received maps with GPS locations and the spreading of the Rosa Rugosa.
Bente MelgaardProject ManagerTlf.: 5640 firstname.lastname@example.org
Stephan MølvigUAV specialistTlf.: 5640 email@example.com
The Danish Nature Agency
UAV mapping along 22 km of the western coast of Denmark. Data collection and data processing.