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. Author manuscript; available in PMC: 2012 May 30.
Published in final edited form as: Fla Entomol. 2005 Jan 1;88(4):372–382. doi: 10.1653/0015-4040(2005)88[372:EOEACO]2.0.CO;2

Table 1.

Repeated-measures ANOVA for water quality parameters. Litter = leaf litter present or absent; environment = ambient CO2, elevated CO2, or control environments. AR(1) = autoregressive order 1 covariance estimate with subject = block(litter × environment). Decimal df values resulted from Satterthwaite-type df calculation.

Covariance
Parameter Estimates
Factor df F P AR(1) Residual
Nitrate Litter   1, 60.6 18.80 <0.0001 0.6173 0.2755
Environment   2, 60.6 5.78 0.0051
Time   7, 281 48.00 <0.0001
Litter × Environment   2, 60.6 0.54 0.5829
Litter × Time   7, 281 0.80 0.5899
Environment × Time 14, 289 1.45 0.1277
Litter × Environment × Time 14, 289 1.00 0.4555
pH Litter   1, 45.3 6.95 0.0114 0.8373 0.4592
Environment   2, 45.3 2.35 0.1073
Time   5, 203 37.69 <0.0001
Litter × Environment   2, 45.3 1.76 0.1830
Litter × Time   5, 203 4.07 0.0015
Environment × Time 10, 205 1.25 0.2637
Litter × Environment × Time 10, 205 1.02 0.4251
DO Litter   1, 74.9 297.20 <0.0001 0.3740 0.0053
Environment   2, 74.9 1.65 0.1983
Time   7, 271 130.80 <0.0001
Litter × Environment   2, 74.9 0.81 0.4498
Litter × Time   7, 271 3.16 0.0032
Environment × Time 14, 285 2.35 0.0043
Litter × Environment × Time 14, 285 1.16 0.3083