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Table 5 Characteristics of the MLR models for the relationship between the log-transformed (ln) HM contents and N concentrations in mosses and the predictors

From: Correlating elements content in mosses collected in 2015 across Germany with spatially associated characteristics of sampling sites and their surroundings

Variable Target variable (element content in moss samples)
ln Cd In Cu ln Hg In Ni In Pb ln Zn N
Axis intercept (intercept)
 MossSpecies::Hypcup − 4.1259*** 2.1396*** − 2.8503*** − 0.6498*** − 1.0461*** 3.2543*** 1.4662***
 MossSpecies::Plesch − 4.5237*** 2.2703*** − 2.9865* − 1.0266*** − 1.2981*** 3.2504 1.3841
 MossSpecies::Psepur − 4.1519 2.3067*** − 3.0545*** − 1.1412*** − 1.398*** 3.569*** 1.68***
Slope (slope)
 agr5 1.0823*       
 agr10 − 1.4968**       
 agr75   − 0.8641*** − 5.2626***     
 agr100    4.7779***     
 agr150      − 2.8215**   − 0.7759**
 agr200      5.0957***   
 agr300 3.8929***       
 CDistSea     − 0.0402**    
 DistTreeCrownsAverage       − 0.0042** − 0.0078***
 DistTreeCrownsMax   − 0.0078***      
 for5 1.379**      0.3196***  
 for10 − 1.6679***     0.9194**   − 0.5501***
 for25      − 1.6428***   
 for50     − 1.56***    
 for75    − 4.8525***     
 for100    6.0917*** 3.7169***    
 for200    − 2.3588***     
 For250 − 5.6749*      − 1.135*** − 5.5923***
 for300 4.8276* − 1.4352***      5.0524**
 LAI 0.0332***       
 LAI2   0.0315**     0.0346***  
 LE_all_N        0.0016***
 LE_all_NH4        − 0.0017***
 pegwind_1        0.1112**
 popdens100 0.0017***    0.0014***    
 popdens5      − 0.0003* − 0.0003**  
 popdens50   0.0007***     0.0004***  
 pre1315_gk 0.0005***     0.0009***   
 pre90 days    − 0.0068***     
 ShrubCoverage    − 0.0046**     
 SlopeGradient 0.0078**       
 TreeCoverage − 0.004*       
 TreeShrubCoverage 0.0067**   0.0028**     
 TsLayerHeightAverage    0.0082**     0.0114***
 TsLayerHeightMin 0.0085**     0.0117***   
 urb1      0.9271**   
 urb10       1.5446**  
 urb25      2.575***   − 1.2321**
 urb150 − 4.7086*       
Model quality indices
 DF 369 381 385 393 386 379 386
 RSE 0.4285 0.289 0.4383 0.4849 0.4797 0.2863 0.3451
 R2 0.36 0.38 0.21 0.32 0.32 0.36 0.42
 adjR2 0.33 0.37 0.19 0.31 0.31 0.35 0.40
  1. ln log-transformed values, DF degree of freedom, RSE root of residual standard error, R2 coefficient of determination, adjR2 corrected coefficient of determination
  2. Significance codes: * = 0.05; ** = 0.01; *** = 0.001