Litter spiders as bio-indicators of recovery after clearcutting in a western coniferous forest

The litter spiders of the H. J. Andrews Experimental Forest inwestern Oregon were pitfall-trapped through eight consecutive sea-sons from June 1982 to May 1984. Traps were placed in 29 mid-elevation sites (1,400-3,000 ft; 450-950 m) that differed from oneanother with respect to moisture (based on the classification of Dyr-ness, Franklin, Moir 1974; Bulletin 4, Coniferous Forest Biome, USIPB)and succession (6, 19, 31 years after clearcutting, and old growth).