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Research, Policy and Practice

Table 2 Repeated-measures ANOVA testing interactive effects of grazing intensity, pasture and year for NEE, RE, GEP

From: Influence of grazing and precipitation on ecosystem carbon cycling in a mixed-grass prairie

Effect Number Density NEE GEP RE
  DF DF F P F P F P
Intensity (I) 2 44 3.85 0.03 1.81 0.18 4.46 0.02
Pasture (P) 1 44 12.58 < 0.01 4.02 0.05 0.01 0.93
I × P 2 44 6.72 < 0.01 10.66 < 0.01 5.53 < 0.01
Year (Y) 1 44 117.32 < 0.01 410.80 < 0.01 346.68 < 0.01
Y × I 2 44 3.56 0.04 6.32 < 0.01 4.19 0.02
Y × P 1 44 0.38 0.54 6.50 0.01 15.10 < 0.01
Y × I × P 2 44 7.61 < 0.01 7.10 < 0.01 2.38 0.11
  1. NEE, net ecosystem exchange; RE, ecosystem respiration; GEP, gross ecosystem production.