Commerial Take of Wild Steelhead to be Increased! - Page 3 - Fly Fishing Forum
Pacific Northwest Sea Run Forum No such thing as rainbow trout, only landlocked steelhead

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  #31  
Old 01-20-2004, 05:55 AM
Plunker Plunker is offline
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Here are some numbers OC

The non-tribal impact is limited to less than 2% on each of the ESA listed stocks.

The following is taken from the file at this link:
http://www.nwr.noaa.gov/1sustfsh/doc..._CRharvest.pdf

One of the provisions of the agreement (U.S. v Oregon parties 2001) and associated Biological Opinion (NMFS 2001) is that the combined incidental mortality rate in all non-Indian fisheries will be 2% or less for each of the affected steelhead ESU's.

For steelhead (O. mykiss) -
The ESU's as published in the Federal Register are:
62 FR 43937 (8/18/97) - Upper Columbia River (Endangered
62 FR 43937 (8/18/97) - Snake River Basin (Threatened)
63 FR 13347 (3/19/98) - Lower Columbia River (Threatened)
64 FR 14517 (3/25/99) - Upper Willamette River (Threatened)
64 FR 14517 (3/25/99) - Middle Columbia River (Threatened)

The U.S. v. Oregon Technical Advisory Committee (TAC) tangle net fishery report (TAC 2003) estimated that the incidental mortality rate on winter steelhead during the 2002 fishery (including Upper Willamette steelhead and the winter run portions of the Lower Columbia River and Middle Columbia River ESUs) likely ranged between 5.6% - 14.5%.

Catch-and-release mortality associated with 8-inch and 4.25-inch mesh size for wild winter steelhead is currently estimated at 35% and 20%, respectively. The catch-and-release long-term mortality associated with 8-inch and 4.25-inch mesh size for winter steelhead currently used may change as a result of additional data collected in 2003 and beyond.

Effects of the 2002 Fishery (Not Including the Additional Management Guidelines) Steelhead catch in the commercial spring chinook tangle-net selective fishery greatly exceeded the preseason catch expectations due to the extremely large winter steelhead run in 2002, the timing of the fishery, and the gear employed in the fishery. A total of 20,900 steelhead were handled in this fishery, of which 8,400 were marked and 12,400 were unmarked. Unmarked steelhead include wild fresh run winter and summer steelhead, unmarked hatchery fresh run winter and summer steelhead, and spawned out winter and summer steelhead kelts. The wild winter steelhead total terminal run size (tributary returns) for 2002 is estimated to have been about 34,100 fish. The total number of wild winter steelhead mortalities in the 2002 tangle net fishery is estimated to have ranged between 1,800 and 5,800 fish. The estimated impact rate on wild winter steelhead for the affected ESU's in 2002 therefore ranges from 4.9% to 14.5%. Additionally, there were impacts on wild winter steelhead in the mainstem sport fishery during March and April of 2002. The total number of release mortalities is estimated to have been 22 fish in the 2002 sport fishery. The impact rate from the 2002 sport fishery was about 0.06%. Combined commercial and sport fishery impacts on wild winter steelhead in 2002 is estimated to have been between 5.0% and 14.6%.

Exceeding the allowable incidental take for the affected steelhead ESUís reduced escapements below what they would have been in 2002 by 3-13%.

The TAC attempted to analyze impacts to wild summer steelhead for 2002; however, because of the presence of several ESUs and the difficulty in determining ESU-specific run reconstruction, the estimates are not as reliable as for winter steelhead. Impacts on wild summer-run steelhead stocks were likely less than 2%.

Effects of the 2003 Fishery (Including the Additional Management Guidelines) The wild winter steelhead total terminal run size (tributary returns) for 2003 is estimated to have been about 15,500 fish. The total number of winter steelhead released in the 2003 fishery was 2,184, out of which 1,086 were natural-origin winter steelhead. The total number of wild winter steelhead mortalities in the 2003 tangle net fishery is estimated to have been 189 fish, or 1.538% of the river mouth runsize estimate. The states had allocated 1.6%-1.8% mortality rate to wild winter steelhead for this fishery in 2003. Upon reaching a 1.538% mortality rate mark, the states closed this fishery for the year.

Additionally, there are recreational fishery impacts on wild winter steelhead in 2003 that need to be considered. The total impact rate from the 2003 recreational fishery is expected to be less than 0.1%. Combined commercial and recreational fishery impacts on wild winter steelhead in 2003 will be less than 2%.

The TAC will attempt to analyze impacts on wild summer steelhead post-season in 2003; however, because of the presence of several ESUs and the difficulty in determining ESU-specific run reconstruction the summer steelhead estimates are not as reliable as for winter steelhead. Impacts on wild summer-run steelhead stocks were likely less than 2%.


For Chinook salmon (O. tshawytscha) -
The ESU's as published in the Federal Register are:
64 FR 14308 (3/24/99) - Upper Columbia River Spring (Endangered
64 FR 14308 (3/24/99) - Lower Columbia River (Threatened)
64 FR 14308 (3/24/99) - Upper Willamette River (Threatened)
57 FR 14653 (4/22/92) - Snake River Spring/Summer (Threatened)

Impacts on the listed chinook were as follows:

In 2002, the first year of the commercial spring chinook tangle-net selective fishery, a total of 28,727 spring chinook were handled during this fishery, of which 14,238 were kept and 14,489 were released. Based on CWT and Visual Stock Identification (VSI) data, the kept spring chinook catch was comprised of 8,237 upriver stock; 5,242 Willamette stock; 473 Cowlitz, Kalama, Lewis, and Sandy stock; and 286 Select Area Fishery Enhancement (SAFE) stock, while the released catch was comprised of 12,396 upriver stock; 958 Willamette stock; 28 Cowlitz, Kalama, Lewis, and Sandy stock; and 1,105 SAFE stock. The large number of upriver and SAFE stock spring chinook released in this fishery in 2002 reflect the fact that not all hatchery fish returning to these areas that year were mass marked with an adipose fin-clip. The impact rate on wild upriver spring chinook in 2002 was 0.70% which is similar to the preseason management guideline of 0.68% for 2002. Impacts on naturally produced Willamette spring chinook in 2002 totaled 0.60%. In both cases the overall impact rate was 2.0%, one third of which was allocated to the commercial tangle-net fishery.

In 2003, the second year of the commercial spring chinook tangle-net selective fishery, and the first year using the additional management guidelines which are the subject of this Supplemental Biological Opinion, a total of 5,667 spring chinook were handled during this fishery, of which 3,173 were kept and 2,494 were released. Based on CWT and VSI data, the kept spring chinook catch was comprised of 2,012 upriver stock; 918 Willamette stock; 137 Cowlitz, Kalama, Lewis, and Sandy stock; and 106 SAFE stock while the released catch was comprised of 2,203 upriver stock; 234 Willamette stock; 7 Cowlitz, Kalama, Lewis, and Sandy stock; and 50 SAFE stock. Most of the spring chinook released in this fishery were of upriver origin. The fishery targets unlisted Willamette spring chinook. The catch composition (kept and released) reflect the fact that upriver chinook returning to the fishing area in 2003 were early or that the Willamette spring chinook were late. The impact rate on naturally produced upriver spring chinook in 2003 was 0.668%, which is greater than the guideline of 0.59% for this fishery, but less than the total allowable impact of 2%. Impacts on wild Willamette spring chinook in 2003 totaled 0.295%. Catch-and-release mortality associated with 8-inch and 4.25-inch mesh size for wild spring chinook are currently estimated at 50% and 25%, respectively. Recreational fisheries were also managed inseason with time and area closures to ensure that the overall impact rate of 2% was not exceeded.

Hyvš Kalastus! - Plunk

Last edited by Plunker; 02-05-2004 at 01:36 AM.
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  #32  
Old 01-20-2004, 08:05 AM
Moonlight Moonlight is offline
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Thanks Plunk...

Your post certainly helped to clear up some of my confusion by seperating the Apples from the Oranges. Thank you!
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