Table 1. Polypore species recorded, and the percentage of logs occupied by the species on each log type group. Species are ranked according to the total number of observations.
Species Girdled Chain-saw
felled 		Natural
decay 1 		Natural
decay 2
n = 27 n = 150 n = 28 n = 35
Trichaptum abietinum 48 99 36 60
Fomitopsis pinicola 70 91 43 63
Antrodia serialis 15 71   49
Skeletocutis carneogrisea   79 4 9
Ischnoderma benzoinum   16    
Phellinus ferrugineofuscus* 7   11 37
Skeletocutis amorpha 4 11 4  
Postia tephroleuca 7 6   14
Postia caesia 7 3   9
Phellinus viticola*     4 9
Pycnoporellus fulgens*   2    
Gloeophyllum sepiarium   1    
Fomitopsis rosea*       6
Junghuhnia luteoalba*       3
Oligoporus stipticus   1    
Antrodia sinuosa       3
Oligoporus fragilis       3
Gloeophyllum odoratum   1    
Physisporinus vitreus       3
Skeletocutis papyracea       3
Spongiporus undosus   1    
* Old-growth forest indicator species according to Niemelä (2005).
1

Fig. 1. The number of polypore species per log on natural logs of decay stage 1 (n = 28), girdled logs (n = 27), natural logs of decay stage 2 (n = 35) and chain-saw felled logs (n = 150). The horizontal lines represent medians, boxes 25% to 75% quartiles, whiskers extend to 1.5 times the height of the box or to the minimum or maximum values; circles represent extreme values that do not fall between the whiskers.

2

Fig. 2. Species accumulation curves of polypores on increasing number of logs for each of the log type groups. To increase clarity, 95% confidence intervals are not presented; see Results for statistical differences.

Table 2. The results of the χ2-test exploring the frequency of the seven most frequent polypore species on the four log type groups. The adjusted standardized residuals (ASR) indicate whether the species was more (positive values) or less (negative values) frequent than expected on the log type. Significant differences from the expected frequency are underlined.
  Girdled
n = 27 		Chain-saw
felled
n = 150 		Natural
decay 1
n = 28 		Natural
decay 2
n = 35
% logs ASR % logs ASR % logs ASR % logs ASR
Trichaptum abietinum 48 –4.5 99 9.5 36 –6.3 60 –3.3
Fomitopsis pinicola 70 –1.2 91 6.0 43 –5.0 63 –2.6
Antrodia serialis 15 –4.2 71 7.0 0 –5.7 49 –0.6
Skeletocutis carneogrisea 0 –5.4 79 11.1 4 –5.4 9 –5.5
Ischnoderma benzoinum 0 –1.3 16 3.1 0 –1.4 0 –1.7
Phellinus ferrugineofuscus 7 –0.1 0 –5.4 11 0.6 37 6.9
Skeletocutis amorpha 4 –0.9 11 2.1 4 –0.9 0 –1.2