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Mean (±s.e.) nitrogen isotopic composition (δ15N) in offspring ramets in ammonium and nitrate treatments (A) and in connected and severed offspring ramets in water-stressed and well-watered treatments (B). (C, D) Mean (±s.e.) nitrogen isotopic composition (δ15N) in offspring ramets in water-stressed and well-watered treatments and growing in nitrate or ammonium nitrogen for connected ramets (C) and severed offspring ramets (D). See Table 4 and text for ANOVA parameters.
