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Table 6 Linear mixed-effect models to predict the nutrient concentrations (% (C) and mg∙g−1) 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

  C−2 lnN sqrtP logS sqrtCa lnK lnMg lnMn
Conditional R2 62.3 58 42 65.3 66.4 72 67.9 79.1
Marginal R2 49.4 52 32.1 65.3 66.3 61.8 57.6 32.4
Random factor 12.9 5.99 10 0 0.11 10.2 10.3 46.7
Decomptime – – –11.8 +++ 14.7 – –4.24 +++ 22.6 +++ 37.1 – –8.03 + 3.58 +++ 14.9
Spec – – –35 – – –16.2 – – –12.6 – – –8.03   – – –32.4 – – –19.4 +4.81
Diam 2.54 – – –7.02   – – –14.9 – –2.73   – –8.04 2.57
Decomptime:Spec   +++ 14.1 +++ 15.2 +++ 19.8 – – –26.4 +++ 21.4 – – –26.6 – – –10.2
  1. Values are Eta squared with direction of effect (increase (+) or decrease (−)) according to significance level (0: ‘***’, 0.001: ‘**’, 0.01: ‘*’ and 0.05: ‘.’)