>summary (Lmm.spalten.corr) ID.Transekt Distance Cracks Cover 11 : 6 Min. :1.0 Min. : 0.00 Min. : 0.000 12 : 6 1st Qu.:2.0 1st Qu.: 6.00 1st Qu.: 0.000 14 : 6 Median :3.5 Median : 25.00 Median : 0.100 16 : 6 Mean :3.5 Mean : 31.77 Mean : 1.133 17 : 6 3rd Qu.:5.0 3rd Qu.: 45.00 3rd Qu.: 0.700 18 : 6 Max. :6.0 Max. :244.00 Max. :33.650 (Other):450 Site Brueggele :162 Kirchler :168 Plaetzwiese:156 #Subset of 20 randomly selectet Transects from Lmm.spalten.corr: Grouped Data: Cover ~ Cracks + Distance | Site/ID.Transekt ID.Transekt Distance Cracks Cover Site 1 11 1 25 0.14 Plaetzwiese 2 11 2 30 7.10 Plaetzwiese 3 11 3 53 0.80 Plaetzwiese 4 11 4 25 0.70 Plaetzwiese 5 11 5 25 0.90 Plaetzwiese 6 11 6 28 0.00 Plaetzwiese 19 14 1 10 0.00 Plaetzwiese 20 14 2 10 0.00 Plaetzwiese 21 14 3 0 0.00 Plaetzwiese 22 14 4 10 0.00 Plaetzwiese 23 14 5 0 0.00 Plaetzwiese 24 14 6 0 0.00 Plaetzwiese 31 16 1 25 0.00 Plaetzwiese 32 16 2 20 0.00 Plaetzwiese 33 16 3 38 8.20 Plaetzwiese 34 16 4 45 16.00 Plaetzwiese 35 16 5 60 6.50 Plaetzwiese 36 16 6 0 0.00 Plaetzwiese 49 19 1 45 0.18 Plaetzwiese 50 19 2 17 0.10 Plaetzwiese 51 19 3 7 0.00 Plaetzwiese 52 19 4 8 0.00 Plaetzwiese 53 19 5 0 0.00 Plaetzwiese 54 19 6 5 0.00 Plaetzwiese 67 22 1 44 0.00 Plaetzwiese 68 22 2 25 0.00 Plaetzwiese 69 22 3 0 0.00 Plaetzwiese 70 22 4 0 0.00 Plaetzwiese 71 22 5 14 0.26 Plaetzwiese 72 22 6 0 0.00 Plaetzwiese 85 25 1 65 0.35 Plaetzwiese 86 25 2 43 0.81 Plaetzwiese 87 25 3 31 2.00 Plaetzwiese 88 25 4 0 0.00 Plaetzwiese 89 25 5 0 0.00 Plaetzwiese 90 25 6 6 0.00 Plaetzwiese 109 29 1 0 0.00 Plaetzwiese 110 29 2 0 0.00 Plaetzwiese 111 29 3 105 0.85 Plaetzwiese 112 29 4 20 0.80 Plaetzwiese 113 29 5 5 0.10 Plaetzwiese 114 29 6 0 0.00 Plaetzwiese 199 44 1 72 0.85 Kirchler 200 44 2 20 0.05 Kirchler 201 44 3 3 0.00 Kirchler 202 44 4 0 0.00 Kirchler 203 44 5 9 0.00 Kirchler 204 44 6 0 0.00 Kirchler 205 45 1 35 1.75 Kirchler 206 45 2 35 1.20 Kirchler 207 45 3 19 0.30 Kirchler 208 45 4 48 0.25 Kirchler 209 45 5 30 0.00 Kirchler 210 45 6 17 0.00 Kirchler 223 48 1 48 0.12 Kirchler 224 48 2 5 0.00 Kirchler 225 48 3 10 0.00 Kirchler 226 48 4 43 2.25 Kirchler 227 48 5 39 2.90 Kirchler 228 48 6 46 0.75 Kirchler 235 50 1 24 0.25 Kirchler 236 50 2 93 0.25 Kirchler 237 50 3 0 0.00 Kirchler 238 50 4 7 0.00 Kirchler 239 50 5 0 0.00 Kirchler 240 50 6 7 0.00 Kirchler 295 60 1 55 3.10 Kirchler 296 60 2 27 1.50 Kirchler 297 60 3 50 3.60 Kirchler 298 60 4 75 5.50 Kirchler 299 60 5 65 1.25 Kirchler 300 60 6 0 0.00 Kirchler 307 62 1 75 2.00 Kirchler 308 62 2 20 0.20 Kirchler 309 62 3 10 0.30 Kirchler 310 62 4 0 0.00 Kirchler 311 62 5 10 0.00 Kirchler 312 62 6 50 2.00 Kirchler 319 64 1 109 5.20 Kirchler 320 64 2 48 2.72 Kirchler 321 64 3 67 8.00 Kirchler 322 64 4 23 0.00 Kirchler 323 64 5 0 0.00 Kirchler 324 64 6 0 0.00 Kirchler 331 66 1 76 0.01 Kirchler 332 66 2 83 1.30 Kirchler 333 66 3 24 0.30 Kirchler 334 66 4 100 13.80 Kirchler 335 66 5 25 0.00 Kirchler 336 66 6 0 0.00 Kirchler 349 69 1 103 6.05 Kirchler 350 69 2 63 1.35 Kirchler 351 69 3 20 0.00 Kirchler 352 69 4 15 0.20 Kirchler 353 69 5 0 0.00 Kirchler 354 69 6 15 0.00 Kirchler 367 72 1 244 0.15 Brueggele 368 72 2 180 1.55 Brueggele 369 72 3 165 11.95 Brueggele 370 72 4 137 5.90 Brueggele 371 72 5 145 7.20 Brueggele 372 72 6 93 4.30 Brueggele 397 77 1 6 0.02 Brueggele 398 77 2 7 0.00 Brueggele 399 77 3 25 0.00 Brueggele 400 77 4 60 0.20 Brueggele 401 77 5 59 0.70 Brueggele 402 77 6 42 0.05 Brueggele 433 83 1 55 1.10 Brueggele 434 83 2 45 1.00 Brueggele 435 83 3 0 0.00 Brueggele 436 83 4 25 0.00 Brueggele 437 83 5 15 0.10 Brueggele 438 83 6 5 0.00 Brueggele >cracks.lmer <- (lmer (Cover ~ Cracks + Distance + (Cracks + Distance | Site / ID.Transekt) , data = Lmm.spalten.corr, method = ("ML")) >summary (cracks.lmer) Linear mixed-effects model fit by maximum likelihood Formula: Cover ~ Cracks + Distance + (Cracks + Distance | Site/ID.Transekt) Data: Lmm.spalten.corr AIC BIC logLik MLdeviance REMLdeviance 1918 1981 -944 1888 1904 Random effects: Groups Name Variance Std.Dev. Corr ID.Transekt:Site (Intercept) 1.8358e-01 4.2846e-01 Cracks 2.1744e-03 4.6631e-02 -1.000 Distance 1.0280e-09 3.2062e-05 0.002 -0.002 Site (Intercept) 1.0328e-09 3.2137e-05 Cracks 1.0435e-09 3.2303e-05 0.044 Distance 1.0280e-09 3.2062e-05 0.057 0.122 Residual 2.0560e+00 1.4339e+00 number of obs: 486, groups: ID.Transekt:Site, 81; Site, 3 Fixed effects: Estimate Std. Error t value (Intercept) -0.585846 0.194017 -3.020 Cracks 0.040834 0.006053 6.746 Distance 0.099521 0.041494 2.398 Correlation of Fixed Effects: (Intr) Cracks Cracks -0.455 Distance -0.821 0.080 >cracks.lmer1 <- (lmer (Cover ~ Cracks + Distance + (Cracks + Distance | Site / ID.Transekt) , data = Lmm.spalten.corr, method = ("ML")) >summary (cracks.lmer1) Linear mixed-effects model fit by maximum likelihood Formula: Cover ~ Cracks + (Cracks | Site/ID.Transekt) Data: Lmm.spalten.corr AIC BIC logLik MLdeviance REMLdeviance 1910 1943 -946.9 1894 1905 Random effects: Groups Name Variance Std.Dev. Corr ID.Transekt:Site (Intercept) 1.9162e-01 4.3774e-01 Cracks 2.1710e-03 4.6594e-02 -1.000 Site (Intercept) 1.1199e-09 3.3465e-05 Cracks 1.0434e-09 3.2302e-05 0.261 Residual 2.0869e+00 1.4446e+00 number of obs: 486, groups: ID.Transekt:Site, 81; Site, 3 Fixed effects: Estimate Std. Error t value (Intercept) -0.203951 0.111849 -1.823 Cracks 0.039669 0.006037 6.571 Correlation of Fixed Effects: (Intr) Cracks -0.688