Table 8.— Ravine cover and volume means for ravine stands. Stands 7, 10, and 14 were not visited 

 in all years and are not included in the means 







Cover 







Volume 





1978 



1979 



1982 



1978 



1979 



1982 





Percent or m^/0.01 ha 





-mVO.OI ha- 





Shrub*?' 















Acer glabrum 



2.0 



5.6 



8.9 



4.0 



10.5 



24.2 



Amelanchier ainifolia 



1.2 



2.1 



3.5 



1.5 



4.2 



7.0 



Physocarpus malvaceus 



3.6 



6.2 



11.5 



2.0 



5.0 



36.9 



Rubus parviflora 



10.2 



13.8 



15.5 



4.8 



8.5 



10.1 



Spiraea betulifolia 



4.8 



4.8 



3.3 



1.6 



1.9 



1.4 



Symphoricarpos albus 



5.9 



6.7 



17.1 



3.3 



4.1 



36.4 



Vaccinium globulare 





.5 



.4 



— 



.1 



.1 



Total shrubs 



29.3 



43.2 



64.1 



18.8 



38.4 



105.3 



Herbs: 















Seeded grasses 















Agropyron trichoptiorum 



.1 



.6 



1.8 



.1 



.7 



1.1 



Bromus inermis 



.1 



.5 



.8 



V 



.3 



.5 



Dactylis glomerata 



6.0 



13.7 



10.9 



2.4 



9.9 



3.2 



Festuca arundinacea 



.1 



7 

 ./ 



1 



— 



— 



— 



Total seeded grass 



7.5 



18.1 



13.6 



2.5 



10.9 



4.8 



Other Heros 















Aster conspicuus 



1.4 



2.1 



2.0 



.6 



.9 



.6 



Calamagrostis rubescens 



1.0 



2.3 



1.3 



A 



A 



1.1 





Galium triflorum 



1.6 



2.4 



.5 



.3 



.5 



.1 



Mitella stauropetala 



.4 



1.8 



1.2 



T 



.1 



.1 



Osmorhiza ctiilensis 



1.0 



1.3 



T 



.3 



.4 



T 



Total herbs2 



48.1 



51.8 



42.8 



13.9 



23.7 



11.9 



Total vascular plants 



77.4 



95.0 



106.9 



32.7 



62.1 



117.2 



= trace. 



2May Include shrubs under 5 dm tall with less than one-sixth cover in individual plots. 



ravines the relationship between burn severity and 

 moisture was of particular importance. In the moist, 

 lower ravines where the fire was severe enough to com- 

 pletely expose minereil soil, the seeded grasses exhibit 

 high cover and volume (fig. 10). In microsites where the 

 ravine was wettest, the fire effects were minimal. In 

 these latter areas natural revegetation by the ground 

 layer plants and the presence of unburned duff 

 prevented establishment of seeded grasses on the ravine 

 floor. In steeper, drier ravines the seeded grass either 

 established well, but did not attain the height or cover 

 in comparison to the moist areas, or was absent 

 altogether. 



Table 9 compares stands originally without seeded 

 grasses with the steeper, well-drained sites having seeded 

 grasses and with the moist lower ravines having seeded 

 grasses. 



Observations in the moist lower ravines indicate that 

 there were some reductions in low shrubs and native her- 

 baceous species during 1978 and 1979; competition with 

 seeded grasses may have been a factor. Herbaceous 

 species also declined in 1982 which appears to be 

 related to shrub shading in aU the ravine stands. 



FUEL LOADING ON STUDY AREA 



Fuel inventory and analysis. Studies of the fuels dur- 

 ing the first 3 yeeu-s following the fire were done as a se- 

 cond feature of the two primary studies of vegetative 

 recovery. Fuel loading measurements were carried out 

 according to the method recently described by Brown, 



Figure 10.— Seeded grass sprouting In June 

 1978 within one of the severely burned, 

 moist, lower ravines where the seeded 

 grasses did best. 



13 



