Table 1. Example of a case data table of a species from multiple surveys. Such data can be used to induce an initial network structure or to refine probabilities of relations in an existing network. Column headings refer to case number, and input and output nodes in the model for the rare fungus Bridgeoporus nobilissimus (B. nob.; Fig. 3a). * = missing data. (Data sources: T. O’Dell and T. Dreisbach, personal communication).


Input nodes
Output node
Case number
Node X: Abies procera boles, cm dbh
Node Y: Abies procera snags, cm dbh
Node Z: Abies procera stumps, cm dbh
Node B: Other bold conks
Node C: Mesic indicator plants
Node J2: Vegetative cover, %
Node A: B. nob. presence
1
0
0
130
rare to absent
sparse
85
present
2
0
0
110
present
abundant
85
present
3
0
0
130
present
abundant
80
present
4
100
100
0
present
abundant
85
present
5
90
0
100
present
abundant
45
absent
6
*
*
*
*
abundant
95
absent
7
100
*
*
*
abundant
100
absent
8
75
*
*
*
sparse
100
absent
9
75
50
75
*
sparse
100
absent
10
75
*
*
*
absent
70
absent
11
150
150
150
*
abundant
100
absent
12
150
*
*
*
sparse
100
absent
13
150
*
*
*
abundant
100
absent
14
100
100
100
*
absent
*
absent
15
75
50
*
*
abundant
100
absent
16
100
0
0
*
absent
80
absent
17
75
75
75
*
sparse
50
absent
18
80
50
50
*
abundant
100
absent
19
*
*
*
*
abundant
80
present
20
*
*
107
*
abundant
100
present
21
*
*
*
*
abundant
100
present
22
*
*
122
*
abundant
*
present
23
*
*
*
*
abundant
*
present
24
50
100
0
present
sparse
90
present
25
100
100
0
present
abundant
75
present
26
0
0
100
rare to absent
sparse
75
present
27
100
0
100
present
sparse
70
present
28
100
0
100
present
abundant
90
present
29
0
0
100
rare to absent
abundant
93
present
30
100
100
0
rare to absent
abundant
85
present
31
0
0
100
rare to absent
abundant
95
present
32
100
0
100
rare to absent
sparse
70
present
33
100
100
*
present
sparse
90
present
34
100
0
100
present
sparse
90
present
35
0
0
100
present
abundant
95
present
36
100
0
100
rare to absent
abundant
95
present
37
100
30
0
rare to absent
abundant
80
present
38
30
30
100
present
abundant
80
present
39
30
0
100
present
sparse
44
present
40
100
10
100
rare to absent
sparse
85
present
41
100
0
100
present
sparse
95
present
42
100
30
100
present
abundant
85
present
43
10
0
100
present
abundant
75
present
44
30
0
100
rare to absent
abundant
70
present
45
100
0
100
present
sparse
58
present