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Figures showing contrasting climate (a, b), seasonal water potential (c, d) and stomatal conductance (e, f) for island (a, c, e) and mainland (b, d, f) field sites. Climate figures depict monthly averages of max. Temperature (solid line), min. Temperature (dashed line) and precipitation (vertical bars) based on long-term climate data from nearby weather stations (1908–2019). Water potential and stomatal conductance plots depict mean values ±1 SE for each species.
