On these bases, one could for instance define dbMEM 1, 3, and 4 as “broad
scale”, dbMEM 6, 7, 10 and 11 as “medium scale”, and dbMEM 20 as “fine scale”
descriptors. Separate RDAs with these subsets will model broad, medium and finescaled patterns, respectively.
d = 1
dbMEM 1
d = 1
dbMEM 3
d = 1
dbMEM 4
d = 1
dbMEM 6
d = 1
dbMEM 7
d = 1
dbMEM 10
d = 1
dbMEM 11
d = 1
dbMEM 20
-2.5
-1.5
-0.5 0.5 1.5 2.5
-1.5
-0.5 0.5 1.5 2.5
-2.5
-1.5
-0.5 0.5 1.5 2.5
-2.5
-1.5
-0.5 0.5 1.5 2.5
-2.5
-1.5
-0.5 0.5 1.5 2.5
-3.5
-2.5
-1.5
-0.5 0.5 1.5
-2.5
-1.5
-0.5 0.5 1.5
-2.5
-1.5
-0.5 0.5 1.5
Fig. 7.7 The 8 significant dbMEM variables with positive spatial correlation used in the dbMEM
analysis of the detrended oribatid mite data.
7.4 Eigenvector-Based Spatial Variables and Spatial Modelling
325