Table 1.

Effects of drought, sampling time and the interaction term (drought × time) on carbon (C) and nitrogen (N) pools (a) before mowing, also given as percentage of controls, calculated from mean values for data obtained during drought treatment until mowing, and (b) after mowing, evaluated by two-way repeated-measures ANOVA

	(a) Before mowing							(b) After mowing
	Drought			Time		Drought × time		Drought		Time		Drought × time
	(%)	F(1)	P	F(2)	P	F (1, 2)	P	F (1)	P	F (1)	P	F (1,1)	P
Aboveground biomass	−17.4	1.96	ns	0.01	ns	0.01	ns
Fine roots	+ 43.8	2.99	ns	0.05	ns	0.32	ns	1.34	ns	0.00	ns	0.02	ns
Soil	−0.8	0.03	ns	0.83	ns	0.20	ns	0.44	ns	1.91	ns	1.28	ns
EOC	+ 26.9	2.35	ns	1.76	ns	0.79	ns	4.02	ns	0.87	ns	2.41	ns
TEN	+ 22.4	1.31	ns	2.26	ns	1.25	ns	1.30	ns	1.52	ns	0.00	ns
NH4+	+ 20.9	1.41	ns	12.77	**	2.60	ns	5.20	ns	1.45	ns	0.06	ns
NO3−	−55.4	4.70	*	1.24	ns	0.14	ns	2.64	ns	0.04	ns	0.11	ns
Total PLFAs	+ 116.2	33.57	***	1.33	ns	0.97	ns	1.27	ns	0.02	ns	0.46	ns
Fungitot	+ 107.3	37.28	***	0.72	ns	1.10	ns	0.36	ns	0.26	ns	0.12	ns
Fungigen	+ 102.1	37.79	***	0.78	ns	0.79	ns	0.01	ns	0.42	ns	0.01	ns
16:1ω5	+ 117.2	28.82	***	2.66	ns	1.37	ns	1.54	ns	0.08	ns	0.34	ns
Bacteriatot	+ 121.5	31.20	***	1.39	ns	0.80	ns	1.40	ns	0.01	ns	0.56	ns
Gram-negative	+ 100.7	29.39	***	1.17	ns	0.72	ns	2.54	ns	0.00	ns	0.57	ns
Gram-positive	+ 181.7	30.21	***	1.86	ns	1.24	ns	0.48	ns	0.00	ns	0.42	ns
Fungi:bacteria	−9.1	2.20	ns	3.68	ns	0.78	ns	1.06	ns	1.60	ns	1.67	ns

Before mowing, n = 9 (for fine roots, n = 6); after mowing, n = 6. After mowing, no data for aboveground biomass were available. Values in bold show significant effects of drought calculated by one-way ANOVA. Asterisks indicate levels of significance (ns, not significant; ^*, P < 0.05; ^**, P < 0.01; ^***, P < 0.001).

Bacteria_tot, total bacterial PLFAs; EOC, extractable organic carbon; Fungi_gen, general fungal PLFAs; Fungi_tot, total fungal PLFAs; PLFA, phospholipid fatty acid; TEN, total extractable nitrogen.