Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.
CHANGES IN STREAM TEMPERATURE AND CANOPY COVER FOLLOWING TIMBER HARVESTING ADJACENT TO NON-FISH BEARING HEADWATER STREAMS
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Watershed ManWatershed Management to Meet Water Quality Standards and TMDLS (Total Maximum Daily Load) Proceedings of the 10-14 March 2007, San Antonio, Texas 701P0207.(doi:10.13031/2013.22483)
Authors: Kelly Maren Kibler, Arne Edward Skaugset
Keywords: Keywords: Stream temperatures, timber harvest, aquatic habitat, salmonid, shade, percent cover
Summer stream temperatures were measured for four years in six headwater streams before four of the streams were clearcut without buffers according to modern forest practice rules. Stream temperatures were monitored for one additional year following the harvest treatment. Percent cover was sampled along the streams before and following harvest and measurements taken after harvest measured shade provided by understory vegetation and logging debris as well as overstory vegetation. Stream temperatures in the four treatment streams responded variably to treatment as compared to the unharvested control streams. Two streams warmed significantly, one stream cooled significantly, and the fourth stream showed no significant change. Before and after stream cover comparisons that considered only overstory vegetation indicated mean changes in cover ranging from 81 to 94% in treatment streams and 3 to 5% in control streams whereas surveys that incorporated cover from understory vegetation and logging slash quantified mean changes in cover ranging from 17 to 42% in treatment streams and 11 to 15% in control streams.(Download PDF) (Export to EndNotes)