Table 1 (Con.) 



Density 



Species 



Feeding Nesting 

 guild' guild' 1975 



Unlogged 



Prelogging 



Postlogging^ 



1976 1977 



1978 1979 1975 



1976 



1977 1978 1979 Probability' 



Total pairs 

 per 100 acres 



Total individuals 



per km' 

 Standing crop 



biomass 



(g per ha)' 

 Species 



richness (n) 

 Species 



diversity 



(1/ZP') 



194.7 214.7 212.2 202.4 203.3 240.8 258.4 266.9 282.0 279.7 



974 1,074 1,061 1,012 1,016 1,204 1,292 1,334 1,410 1,398 



229 213 216 203 215 234 243 258 268 255 



15 20 19 18 20 21 23 25 23 24 



9.9 12.9 13.9 11.5 12.4 11.9 14.7 15.4 14.0 12.8 



'After Diem and Zeveloff (1980). FNI=foliage nectivore-insectivore, TDI=timber drilling insectivore, GGI=ground gleaning Inseclivore, ASUaerial-sally feeding 

 insectivore, FGI=foliage gleaning insectivore, TGO=timber gleaning omnivore, FFC)=foliage feeding omnivore, GGG=ground gleaning granivore, FGG=foliage 

 gleaning granivore. 



'After Diem and Zeveloff (1980). BTN=busfi and small tree nester, PCN=primary cavity nester, CTN=conifer tree nester, SCN=secondary cavity nester, 

 GRN=ground nester, CDN=conifer-deciduous tree nester. 

 ^Logging began in September and was completed in October 1976. 



'Probability associated with thie statistical test. A small probability suggests tfiat Xhe cfiange in pattern from thie prelogging penod to thie postlogging period was 

 different on tfie logged plot tfian on the unlogged plot. A large probability suggests no evidence for such a difference, 

 indicates that the bird species was observed on a plot, but too infrequently to delineate a territory. 

 'Specific identification of the Empidonax flycatcher was not confirmed. 

 'Species weights from Dunning (1984). 



Table 2 — Mean number of individual animals trapped per year on logged and unlogged study plots, west-central Idaho, 

 197510 1979 



Unlogged Logged 



Species 



Prelogging 



Postlogging 



Prelogging 



Postlogging 



Probability' 



Deer mouse 



26.0 



25.0 



43.0 



24.0 



0.024 



Yellow pine chipmunk 



31.5 



18.7 



21.0 



36.0 



.001 



Boreal redback vole 



12.0 



14.7 



19.0 



31.7 



.329 



Shrew 



4.0 



2.7 



5.5 







.005 



Western jumping mouse 











1.5 



2.3 



2 



Others^ 



0.5 



1.3 



5.0 



2.7 



.159 



'Probability that the observed difference in pattern between the logged and unlogged plots could occur by chance alone. 

 'Probability not computed due to failure to trap any animals on the unlogged plot. 



^ther species include the northern flying squirrel, longtail weasel, northern pocket gopher, and water vole. 



4 



