Post by: Aneoakleaf on July 07, 2009, 01:24:38 PM
Couldn't tell what they were doing with them but they threw back the small ones and kept the big ones...Maybe Bull Trout? Three WDFW Boats working it. Long drive for nuttin
Post by: jackelope on July 07, 2009, 01:32:55 PM
Quote
Bonneville Power Administration
FY 2003 Provincial Project Review
PART 2. Narrative
Project ID: 31027
Title: Movements and Survival of Juvenile and Adult Bull Trout
Section 9 of 10. Project description
a. Abstract
Efforts to manage populations of bull trout have been hampered by a dearth of life history data. It is the goal of this study to provide population data on bull trout for the Columbia River Basin by studying the Lewis River stock as a model system. Bull trout within the Rush Creek watershed will be tagged with 23 mm PIT tags and monitored. A remote stationary interrogation system will bound the downstream end while an impassable waterfall will provide an upper boundary. Emigrating bull trout will be captured in a screw trap operated by WDFW below the stationary interrogation system. The proportion of recaptured bull trout will be used to estimate the total number of migrants. In stream recapture will be used to estimate population size. Back pack interrogation will be used to quantify year class survival and migratory success. Ongoing WDFW efforts to capture adult fish within the upper end of Swift Reservoir will provide opportunities to quantify the spawning migration into Rush Creek. These approaches will provide critical year class survival and migration data necessary to generate models for the long and short term management of bull trout populations within the Columbia River Basin.
http://www.cbfwa.org/FWProgram/ReviewCycle/fy2003lc/projects/31027n.doc
Post by: Aneoakleaf on July 07, 2009, 01:40:55 PM