Science news articles about 'Dr Sonja Knapp'

... study confirms results obtained by Dr. Sonja Knapp and colleagues of Helmholtz Centre for Environmental Research (UFZ) in a study on the German flora ...

... for the frequency of occurrence of native species," says Dr. Sonja Knapp. A number of the most common introduced plant ... to achieve the same frequency of occurrence," says Dr. Sonja Knapp. The introduced plant species are so ...