Foliar resorption in Quercus petraea subsp. iberica and Arbutus andrachne along an elevational gradient

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Table II

Leaf traits and NRE (%), PRE (%), NRP (mg g⁻¹ and PRP (mg g⁻¹) along the elevational gradient (±SE). Means followed by the same letter are not significantly different at the 0.05 level using Tukey’s HSD test.

Species	A. andrachne						Q. petraea
Elevation	450 m		600 m		800 m		450 m		600 m		800 m
		CV		CV		CV		CV		CV		CV
N (mg/g)	23.91 ± 0.63 a	39.88	26.86 ± 0.63 a	28.67	26.13 ± 0.63a	29.76	22.60 ± 0.89a	26.94	24.70 ± 0.89a	21.48	24.35 ± 0.89a	24.24
P (mg/g)	2.57 ± 0.09a	41.71	2.71 ± 0.09a	41.62	2.51 ± 0.09a	41.25	2.52 ± 0.13a	62.21	2.24 ± 0.13b	43.44	2.14 ± 0.13b	51.58
LMA	1.90 ± 0.02ab	15.50	1.91 ± 0.02a	20.70	1.72 ± 0.02b	21.25	1.36 ± 0.03b	11.57	1.50 ± 0.03a	16.96	1.42 ± 0.03b	14.57
N/P	10.30 ± 0.45a	42.30	11.54 ± 0.45a	45.45	11.46 ± 0.45a	36.87	11.24 ± 0.64a	74.83	12.58 ± 0.64a	54.40	12.67 ± 0.64a	56.17
NRE (%)	59.14 ± 3.89a	24.51	47.56 ± 3.89a	35.90	45.77 ± 3.89a	30.40	31.61 ± 3.89a	41.48	36.07 ± 3.89a	30.46	42.42 ± 3.89a	32.76
PRE (%)	56.93 ± 5.34a	24.44	53.24 ± 5.34a	32.10	52.12 ± 5.34a	32.18	62.76 ± 5.34a	37.90	54.01 ± 5.34a	38.27	59.31 ± 5.34a	34.85
NRP (mg/g)	17.71 ± 1.11a	26.01	20.22 ± 1.11a	18.77	20.69 ± 1.11a	23.04	16.23 ± 1.11b	23.87	19.71 ± 1.11a	17.15	17.992 ± 1.11ab	19.33
PRP(mg/g)	1.82 ± 0.14a	30.68	1.45 ± 0.14a	23.02	1.94 ± 0.14a	30.58	1.08 ± 0.14a	55.56	1.35 ± 0.14a	41.31	1.34 ± 0.14a	40.14
MRT_N	2.92 ± 0.24a	35.20	2.89 ± 0.24a	32.40	1.89 ± 0.24b	23.22	0.66 ± 0.03a	16.25	0.68 ± 0.03a	18.32	0.76 ± 0.03a	17.45
MRT_P	0.67 ± 0.07a	36.51	0.68 ± 0.07a	43.92	0.73 ± 0.07a	35.96	0.19 ± 0.04a	60.39	0.28 ± 0.04a	55.47	0.25 ± 0.04a	47.44

CV: Coefficient of variation (the variability among leaves in terms of leaf traits), SE: Standard error.