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Effect of sex (female (red) vs. male (blue)) on the concentration of (a) phosphorus (%); (b) potassium (%); (c) calcium (%); (d) magnesium (%) in needles of Juniperus communis measured at eight time points over two years. Asterisks indicate significant influence of sex (p < 0.05). Values for time points with a significant interaction between sex and soil fertilization treatment (fertilized, F vs. nonfertilized, NF) are illustrated in the insets.
