. 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. 9. I I C I T -i^ I I V^~~l â ^.^l^^ â I â â I 1948 1950 1952 1954 1956 1958 1960 1962 1964 1966 Figure 14 â Estimated numbers of pink and chum salmon spawning in Hollis area streams, Prince of Wales Island, Alaska, 1948-66. spawner counts. Unfortunately, this tech- nique^ was not develope
. 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. 9. I I C I T -i^ I I V^~~l â ^.^l^^ â I â â I 1948 1950 1952 1954 1956 1958 1960 1962 1964 1966 Figure 14 â Estimated numbers of pink and chum salmon spawning in Hollis area streams, Prince of Wales Island, Alaska, 1948-66. spawner counts. Unfortunately, this tech- nique^ was not developed until 1958, so comparable alevin counts are unavailable for the prelogging period. However, Sher- idan and McNeil's data (1968) may be compared with the following standards established by the Alaska Department of Fish and Game (Hoffman 1966):^° Good production more than 250 alevins per square meter. Fair production, 100-250 alevins per square meter. Poor production, less than 100 alevins per square meter. 5 McNeil, William ). Mt)rtalit\ of pink and chum salmon and chum salmon eggs and larvae in south- east Alaska streams. 27 1 pp., 1962. ( thesis on file School of Fish., Univ. Wash.) ID These are preliminary \alues subject to change. Estimates of live pink salmon alevins (preemergent fry) per square meter in the intertidal area of Harris River (Sheridan and McNeil 1968) were: Alevins per Year square meter (Number) 1958 12 1959 107 1960 123 1961 71 1962 82 1963 168 1964 116 1965 203 These data, based on annual samples dug from the spawning beds, are a more reliable index of salmon production than 35. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Meehan, William R. cn. Juneau, Alaska : Institute of Northern Forestry, Pacific Northwest Forest and Range Experiment Station, U. S. Dept. of Agricul
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