Fig. 2From: Staying alive on an active volcano: 80 years population dynamics of Cytisus aeolicus (Fabaceae) from Stromboli (Aeolian Islands, Italy)Estimated number of individuals of C. aeolicus in Stromboli, based on the cross correlation between the results of image interpretation and field surveys. Bars refer to 95% confidence interval. ‘Isolated’ refers to the number of isolated individuals (counts); ‘Clumped’ refers to the number of individuals in dense vegetation patches (estimates); ‘Surface’ refers to the area of occupancy of the dense vegetation patches (in m2)Back to article page