Fig. 1From: Genetic and morpho-physiological differentiation in a limpet population across an intertidal gradienta Nonmetric multidimensional scaling (NMDS) ordination plot of Siphonaria lessonii shell shape variation in two-dimensional space. Different colors indicate different shore heights. b Mean shape, + 2 and − 2 standard deviation (S.D.) along each principal componentBack to article page