. Some effects of clearcutting on salmon habitat of two southeast Alaska streams. Fishes Alaska Effect of logging on; Logging Environmental aspects Alaska Prince of Wales Island; Pink salmon Alaska Reproduction; Chum salmon Alaska Reproduction; Clearcutting Environmental aspects Alaska Prince of Wales Island. Figure 5 — A productive forest soil commonly jound in the study area, Mollis, Alaska (scale in feet). deeper and more pronounced at lower elevations. The study area soils have been mapped and described by Gass et al. (1967). A typical forest soil profile is shown in figure 5. Forests. — T
. Some effects of clearcutting on salmon habitat of two southeast Alaska streams. Fishes Alaska Effect of logging on; Logging Environmental aspects Alaska Prince of Wales Island; Pink salmon Alaska Reproduction; Chum salmon Alaska Reproduction; Clearcutting Environmental aspects Alaska Prince of Wales Island. Figure 5 — A productive forest soil commonly jound in the study area, Mollis, Alaska (scale in feet). deeper and more pronounced at lower elevations. The study area soils have been mapped and described by Gass et al. (1967). A typical forest soil profile is shown in figure 5. Forests. — The study area was densely forested with western hemlock (Tsuga heterophylhi (Raf.) Sarg ), Sitka spruce (P/ccd site hen sis (Bong.) Carr.), Alaska- cedar (Chauiiiecyparis nootkateusis (D. Don) Spach), and western redcedar (Thuja fjlicdtii Donn.) comprising 76, 20, 2, and 2 percent of the stand, respectively. Stands of commercial value usually grew at ele- vations below 1,500 feet and occupied about one-third of the watershed area. Nonforested bogs occupied about one- sixth of the land area, the balance being noncommercial forest, alpine meadow, and rock outcrop (Gass et al. 1967). Godman (1952) has described in considerable detail the composition of old-growth forests typical of southeast Alaska. Watershed characteristics. — The de- scription in table 1 is drawn primarily from James (1956), who previously dis- cussed the study area streams. Fish. — Pink salmon (Oucorhynchns gorhtischa (Walbaum)) and chum salmon (O. keta (Walbaum)) are the major spec- ies maintaining spawning populations in the study streams. Coho salmon (O. kis- utch (Walbaum)) occur in smaller num- bers, and a few sockeye salmon (O. nerka (Walbaum)) are observed in some years. Harris River and Maybeso Creek also sup- port populations of steelhead trout (Sahtio gairdneri Richardson). Table 1—Some characteristics of uatersheds near Mollis, Alaska Characteristic Maybeso 1 Harris Indian Creek River Creek
Size: 1306px × 1914px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
