Table 2.

F stats, degrees of freedom (df) and p-values (P) for linear mixed effects models predicting biological responses of focal P. jamesii individuals

Biological response	Effect	F	df	P
	Treatment	0.96	2	0.414
	Date	39.05	5	< 0.001*
	Treatment:Date	0.57	10	0.833
	Block	0.88	5	0.526
δ13C	Treatment	7.24	2	0.011*
	Block	0.63	5	0.682
Final Biomass	Treatment	4.34	2	0.048*
	Initial Biomass	38.54	1	< 0.001*
	Block	2.59	5	0.102
Absolute % Green	Treatment	6.74	2	0.014*
	Date	60.69	11	< 0.001*
	Treatment:Date	1.92	22	0.012*
	Block	3.17	5	0.057