number of redback voles trapped on logged and unlogged 

 areas in Colorado when the slash was left on the ground. 

 Logged habitats seem to support redback voles only when 

 logs or other debris are present (Tevis 1956; Simons 

 1985). Redback voles apparently prefer moist habitats 

 with an abundant litter of stumps and rotting logs 

 (Merritt 1981). 



Other species of small mammals were either trapped 

 or observed in the Douglas-fir forest. Only a few shrews 

 were caught during the study, and those only in the un- 

 logged forest (table 2). The forest environment was ap- 

 parently sufficiently altered by the selection cut that it 

 became a less suitable habitat for shrews, at least in the 

 short term. Western jumping mice were trapped only in 

 the moist streamside zones found on the generally north- 

 facing watershed. The species prefers the wet meadows, 

 bogs, and brushy streamsides associated with riparian 

 habitats (Thomas 1979). Incidental numbers of the 

 northern flying squirrel, longtail weasel, water vole, and 

 northern pocket gopher were trapped. Red squirrels were 

 common on both the logged and unlogged plots. The mar- 

 ten was rarely observed and only in the unlogged forest. 

 The trapping methods used are not an effective means of 

 determining the numbers of most of these species. 



REFERENCES 



Blake, John G. 1982. Influence of fire and logging on 

 nonbreeding bird communities of ponderosa pine for- 

 ests. Journal of Wildlife Management. 46(2): 404-415. 



Burleigh, Thomas D. 1972. Birds of Idaho. Caldwell, ID: 

 Caxton. 467 p. 



Campbell, Thomas M., Ill; Clark, Tim W. 1980. Short- 

 term effects of logging on red-backed voles and deer 

 mice. Great Basin Naturalist. 40(2): 183-189. 



Diem, Kenneth L.; ZevelofF, Samuel I. 1980. Ponderosa 

 pine bird communities. In: DeGraff, Richard M., tech. 

 coord. Proceedings of the workshop on management of 

 western forests and grasslands for nongame birds; 1980 

 February 11-14; Salt Lake City, UT. Gen. Tech. Rep. 

 INT-86. Ogden, UT: U.S. Department of Agriculture, 

 Forest Service, Intermountain Forest and Range Ex- 

 periment Station: 170-197. 



Dunning, John B., Jr. 1984. Body weights of 686 species 

 of North American birds. Monogr. 1. Tucson, AZ. 

 Western Bird Banding Association. 38 p. 



Franzreb, Kathleen E.; Ohmart, Robert D. 1978. The 

 effects of timber harvesting on breeding birds in a 

 mixed-coniferous forest. Condor. 80(4): 431-441. 



Gashwiler, Jay S. 1970. Plant and mammal changes on 

 a clearcut in west-central Oregon. Ecology. 51(6): 

 1018-1026. 



Halvorson, Curtis H. 1982. Rodent occurrence, habitat 

 disturbance, and seed fall in a larch-fir forest. Ecology. 

 63(2): 423-433. 



Harris, A. S. 1968. Small mammals and natural reforest- 

 ation in southeast Alaska. Res. Note PNW-75. Portland, 

 OR: U.S. Department of Agriculture, Forest Service, 

 Pacific Northwest Forest and Range Experiment 

 Station. 7 p. 



Hill, M. O. 1973. Diversity and evenness: a unifying nota- 

 tion and its consequences. Ecology. 54(2): 427-432. 



Hooven, Edward F.; Black, Hugh C. 1976. Effects of some 

 clearcutting practices on small-mammal populations in 

 western Oregon. Northwest Science. 50(4): 189-208. 



International Bird Census Committee. 1970. An interna- 

 tional standard for a mapping method in bird census 

 work. Audubon Field Notes. 24(6): 722-726. 



Martell, Arthur M. 1983. Changes in small mammal com- 

 munities after logging in north-central Ontario. 

 Canadian Journal of Zoology. 61(5): 970-980. 



McKenzie, Vernon R. 1987. [Personal communication]. 

 December 4. Emmett, ID: U.S. Department of Agricul- 

 ture, Forest Service, Boise National Forest, Emmett 

 Ranger District. 



Medin, Dean E. 1985. Breeding bird responses to 



diameter-cut logging in west-central Idaho. Res. Pap. 

 INT-355. Ogden, UT: U.S. Department of Agriculture, 

 Forest Service, Intermountain Research Station. 12 p. 



Medin, Dean E. 1986. Small mammal responses to 

 diameter-cut logging in an Idaho Douglas-fir forest. 

 Res. Note INT-362. Ogden, UT: U.S. Department of 

 Agriculture, Forest Service, Intermountain Research 

 Station. 6 p. 



Megahan, Walter F. 1983. Hydrologic effects of clearcut- 

 ting and wildfire on steep granitic slopes in Idaho. 

 Water Resources Research. 19(3): 811-819. 



Megahan, Walter F., Seyedbagheri, Kathleen A.; Dodson, 

 Patrick C. 1983. Long-term erosion on granitic roadcuts 

 based on exposed tree roots. Earth Surface Processes 

 and Landforms. 8(1): 19-28. 



Merritt, Joseph F. 1981. Clethrionomys gapperi . Mammal- 

 ian Species No. 146. Shippensburg, PA: American Soci- 

 ety of Mammalogists. 9 p. 



Oelke, Hans. 1981. Limitations of the mapping method. 

 In: Ralph, C. John; Scott, J. Michael, eds. Estimating 

 numbers of terrestrial birds: Proceedings, international 

 symposium; 1980 October 26-31; Asilomar, CA. Studies 

 in Avian Biology 6. Ithaca, NY: Cooper Ornithological 

 Society: 114-118. 



Overton, W. Scott; Davis, David E. 1969. Estimating the 

 numbers of animals in wildlife populations. In: Giles, 

 Robert H., Jr., ed. Wildlife management techniques. 3d 

 ed. Washington, DC: The Wildlife Society: 403-455. 



Petticrew, B. G.; Sadleir, R. M. F. S. 1974. The ecology of 

 the deer mouse, Peromyscus maniculatus , in a coastal 

 coniferous forest. I. Population dynamics. Canadian 

 Journal of Zoology. 52(1): 107-118. 



Rickard, W. H. 1960. The distribution of small mammals 

 in relation to the climax vegetation mosaic in eastern 

 Washington and northern Idaho. Ecology. 41(1): 99-106. 



Root, Richard B. 1967. The niche exploitation pattern of 

 the blue-gray gnatcatcher. Ecological Monographs. 

 37(4): 317-350. 



Ryker, Russell A. 1973. Habitat type map of Silver Creek 

 logging demonstration area. On file at: U.S. Depart- 

 ment of Agriculture, Forest Service, Intermountain 

 Research Station, Forestry Sciences Laboratory, 

 Boise, ID. 



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