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Table 8 Linear mixed-effect models (according to ANOVA table) to explain lignin concentrations (%) and amounts (% Initial amount) in logs of Fagus sylvatica, Picea abies and Pinus sylvestris

From: Nutrient retention and release in coarse woody debris of three important central European tree species and the use of NIRS to determine deadwood chemical properties

  Lignin (%) Lignin (% Initial amount)
Conditional R2 64.6 59.3
Marginal R2 58.6 39.9
Random factor 6 19.4
Decomptime +++ 14.2 – – –11.9
Spec +++ 13.5  
Diam – –4.05 +++ 5.27
Decomptime:Spec – – –26.9 +++ 22.8
  1. Values are Eta squared with direction of effect (increase (+) or decrease (−)) according to significance level (0: ‘***’, 0.001: ‘**’, 0.01: ‘*’ and 0.05: ‘’)