Mean fitness ± 95% confidence intervals predicted from a Poisson log-normal GLMM of Arabidopsis plants from coastal and inland habitats measured as silique number in both field and controlled common gardens. Plants from coastal (black diamonds) and inland (gray circles) demes cultivated in the coastal common garden in Blanes and the inland common garden in Santa Coloma de Farners in 2013 (A) and 2014 (B) and a controlled environment common garden (C) in soil excavated from the sites used for the coastal and inland common gardens; n = 10 plants per deme and 10 demes each from coastal and inland habitats (for details, see Supplemental Table S2).