Effects of Logging on Water Temperature, and Dissolved Oxygen in Spawning Beds
- 1 January 1975
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 104 (1) , 111-121
- https://doi.org/10.1577/1548-8659(1975)104<111:eolowt>2.0.co;2
Abstract
The temperature and dissolved oxygen content of intragravel water were measured in three Oregon coastal streams between June 1968 and June 1969. In 1966, the watershed of one stream had been completely clearcut, and that of a second stream partially clearcut in staggered settings. A third watershed was left unlogged. Clearcut logging resulted in increased temperature of intragravel water in salmon and trout spawning beds and decreased concentrations of dissolved oxygen. The changes were related largely to reduced forest cover over the stream surface and to deposition of fine sediment in the gravel. No serious reduction in survival to emergence of coho salmon occurred along with the observed changes in temperature or dissolved oxygen. A decrease in the resident population of cutthroat trout after logging may have been related to these changes.Keywords
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