Table 6.

Summary of ANOVA results for effects of elevated CO₂ and increased nitrogen fertilization on development and digestibility of O. furnacalis.

Measurement	Treatment	df	F	P
Larvae stage duration	CO2	1	15.14	<0.01
	N	2	30.97	<0.01
	CO2∗N	2	2.43	0.15
Pupal stage duration	CO2	1	8.02	0.02
	N	2	1.78	0.23
	CO2∗N	2	0.09	0.91
Body mass	CO2	1	7.44	0.03
	N	2	4.36	0.05
	CO2∗N	2	0.17	0.85
Food consumption	CO2	1	5	0.06
	N	2	3.73	0.07
	CO2∗N	2	0.14	0.87
MRGR	CO2	1	16.21	<0.01
	N	2	27.64	<0.01
	CO2∗N	2	1.8	0.23
ECI	CO2	1	6.89	0.03
	N	2	4.33	0.05
	CO2∗N	2	0.14	0.87
ECD	CO2	1	5.81	0.04
	N	2	2.48	0.15
	CO2∗N	2	0.05	0.95
AD	CO2	1	0.06	0.81
	N	2	3.56	0.08
	CO2∗N	2	0.74	0.51

^∗MRGR, mean relative growth rate; ECI, efficiency of conversion of ingested food; ECD, efficiency of conversion of digested food; AD, approximate digestibility, N, low N fertilization level (100 mg N/kg soil mixture), middle N fertilization level (200 mg N/kg soil mixture), and high N fertilization level (300 mg N/kg soil mixture); CO₂, ambient CO₂ concentrations (∼380 ppm) and elevated CO₂ concentrations (∼750 ± 15 ppm); n = 3.