Download or read book Kootenai River White Sturgeon Investigations and Experimental Culture written by Kimberly A. Apperson and published by . This book was released on 1990 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Investigations written by Vaughn L. Paragamian and published by . This book was released on 1995 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Investigations Chapter 1 Kootenai River White Sturgeon Spawning and Recruitment Evaluation written by Vaughn L. Paragamian and published by . This book was released on 1997 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Investigations written by Patrick E. Marcuson and published by . This book was released on 1994 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Investigation written by Vaughn L. Paragamian and published by . This book was released on 1999 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Acipenser Transmontanus written by Brian Stephens and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Investigation written by Patrick E. Marcuson and published by . This book was released on 1995 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Acipenser Transmontanus 2009 2019 Investigations in Montana written by Ryan Sylvester and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Acipenser Transmontanus 2009 2020 Investigations in Montana written by Ryan Sylvester and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Investigation written by Vaughn L. Paragamian and published by . This book was released on 2001 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Investigations 1993 Annual Report written by and published by . This book was released on 1994 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: U.S. Army Corps of Engineers in concordance with Bonneville Power Administration provided a release of 324.3 m3/s (400,000 acre feet) of impounded water from Lake Koocanusa, Montana from June 2 to June 16, 1993. This release of water provided approximately 566.4 m3/s (20,000 cfs) discharge in the Kootenai River at Bonners Ferry, Idaho. Nineteen adult white sturgeon equipped with combinations of radio and sonic transmitters were monitored from mid-April to mid-July, 1993. Nine females and one male remained in the Kootenai River near the British Columbia/Idaho border and/or Kootenay Lake, British Columbia. One female was captured by the crew from the Kootenai Hatchery, operated by the Kootenai Tribe of Idaho, delivered to the hatchery, tagged, and released seven days later. She retreated to Kootenay Lake immediately after release. Eight sturgeon with transmitters formed the aggregate of unknown numbers of fish in the staging area. The monitored fish were all judged late vitellogenic and were used to characterize what was assumed reproductive behavior of white sturgeon in the Kootenai River. Four late vitellogenic females moved upriver with the lowland spring runoff (May 11), lingered around the ''staging area'' May 11-24, then retreated downriver May 21-24. Two fish retreated all the way to Kootenay Lake, British Columbia; the other two re-advanced upriver May 27-30 concurrent with the initiation of the augmented discharge on May 28. None of the monitored fish were detected beyond the U.S. Highway 95 bridge. By June 4, the remaining females began moving downriver. Male sturgeon tended to move upriver seven days earlier than the females. They arrived in staging waters about May 11. On May 21, three male sturgeon demonstrated a slight downriver run the same time as did the females. The maximum downriver travel was 14.2 km. All four of the monitored males returned upriver just prior to and during the augmented flow period. Crews fished a combined 14,714 hours with three types of gear designed to sample white sturgeon eggs and larvae. Three eggs (one fertilized, one dead, and one unfertilized) diagnosed as white sturgeon were collected in the vicinity of the highway bridge at Bonners Ferry. All were collected within a few days after the retreat of monitored females. The presence of unfertilized or dead eggs can not verify spawning. Thus the catch rate for one sturgeon egg from all sampling gear was 0.00002 eggs/h. The flow test did not produce any known recruitment to the diminishing white sturgeon population.

Download or read book Kootenai River White Sturgeon Investigations Annual Report 1993 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: US Army Corps of Engineers in concordance with Bonneville Power Administration provided a release of 324.3 m[sup 3]/s of impounded water from Lake Koocanusa, Montana from June 2 to June 16, 1993. Nineteen adult white sturgeon equipped with combinations of radio and sonic transmitters were monitored from mid-April to mid-July 1993. Nine females and one male remained in the Kootenai River near the British Columbia/Idaho border and/or Kootenay Lake, British Columbia. Eight sturgeon with transmitters formed the aggregate of unknown numbers of fish in the staging area. The monitored fish were all judged late vitellogenic and were used to characterize what was assumed reproductive behavior of white sturgeon in the Kootenai River. Four late vitellogenic females upriver with the lowland spring runoff (May 11), lingered around the ''staging area'' May 11--24, then retreated downriver May 21--24. Two fish retreated all the way to Kootenay Lake, British Columbia; the other two re-advanced upriver May 27--30 concurrent with the initiation of the augmented discharge on May 28. By June 4, the remaining females began moving downriver. Male sturgeon tended to move upriver seven days earlier than the females. They arrived in staging waters about May 11. On May 21, three male sturgeon demonstrated a slight downriver run the same time as did the females. The maximum downriver travel was 14.2 km. All four of the monitored males returned upriver just prior to and during the augmented flow period. The flow test did not produce any known recruitment to the diminishing white sturgeon population.

Download or read book Kootenai River White Sturgeon Investigations 1995 Annual Report written by and published by . This book was released on 1995 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was designed to monitor and evaluate the effect of the augmented release of water above minimal flow by Libby Dam for white sturgeon spawning and recruitment.

Download or read book Kootenai River White Sturgeon Investigation written by Vaughn L. Paragamian and published by . This book was released on 2001 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kootenai River White Sturgeon Investigation 1994 Annual Report written by and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Army Corps of Engineers in concordance with Bonneville Power Administration provided a release of 1.48 billion cubic meters (1.2 MAF, million acre feet) of impounded water from Lake Koocanusa, Montana from June 1 to June 28, 1994. This release of water provided approximately 566 To/s (20 thousand cubic feet per second, kcfs) discharge in the Kootenai River at Bonners Ferry, Idaho. Between February and early April 1994, 15 adult sturgeon (10 females, 5 males) in late vitellogenic stage were captured and fitted with combinations of radio and sonic transmitters. A total of 31 sturgeon were monitored. Ten hatchery reared juvenile white sturgeon equipped with radio and sonic tags were released in pools down river of Kootenai Falls, Montana. All ten sturgeon had moved between 60 and 97 km (37.3 and 60.3 mi) down river of release sites within one month. Movements coincided with major flow peaking associated with hydropower production at Libby Dam, located upriver of the release site.

Download or read book Kootenai River White Sturgeon Investigations White Sturgeon Spawning and Recruitment Evaluation 1999 Annual Report written by and published by . This book was released on 2001 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sampling for adult Kootenai River white sturgeon Acipenser transmontanus began in March and continued through April 1999. Forty-six adult sturgeon were captured with 4,091 hours of angling and set-lining effort, while an additional three adult sturgeon were captured during gillnetting for juveniles. Flows for Kootenai River white sturgeon spawning were expected to be high because the snow pack in the basin was estimated at 130% of normal, but runoff came very slowly. Discharge from Libby Dam from mid-March through mid-June was maintained at 113 m3/s (4,000 cfs). Flows in the Kootenai River at Bonners Ferry during early April, including local inflow, were 227-255 m3/s (8,000-9,000 cfs) but increased gradually in late April to a peak of 657 m3/s (23,200 cfs). Flows subsided in early May to about 340 m3/s (12,000 cfs), but rose to 1,031 m3/s (36,370 cfs) by Mary 26 because of local runoff, and white sturgeon began spawning. However, flows subsided again to 373 m3/s (13,200 cfs) June 11, 1999 and some female white sturgeon with transmitters began leaving the spawning reach. Water temperature ranged from about 8 C to 10 C (45 F to 50 F) during these two weeks. On June 13 (two weeks after sturgeon began spawning), spawning and incubation flows from Libby Dam began. The flow was brought up to 1,136 m3/s (40,100 cfs) and temperature rose to about 11 C (52 F). They sampled for 3,387 mat days (one mat day is a single 24 h set) with artificial substrate mats and captured 184 white sturgeon eggs. The Middle Shorty's Island reach (river kilometer [rkm] 229.6-231.5) produced the most eggs (144), with 388 mat days of effort; the Refuge section (rkm 234.8 to 237.5) with 616 mat days of effort produced 23 eggs; and the Lower Shorty's section produced 19 eggs with 548 days of mat effort. No eggs were collected above the Refuge section (> rkm 240.5) with 988 mat days of effort. They do not believe flows for sturgeon spawning in 1999 were very time for adequate spawning. Most spawning is thought to have occurred before the spawning flows, when 66% of the spawning events and 87% of the eggs were collected. Recommendations for the 2000 spawning season are given.

Download or read book Kootenai River White Sturgeon Investigations and Experimental Culture 1992 Annual Report written by and published by . This book was released on 1993 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Setline and angling techniques were used to sample 64 white sturgeon Acipenser transmontanus from the Kootenai River in 1992. Of those sampled, 15 were recaptures from previous years of this study. A total of 429 white sturgeon were captured from March 1989 through September 1992. Fork lengths of white sturgeon in the total sample ranged from 88 to 274 cm. The data indicated there was a complete lack of recruitment of juveniles into the population which was estimated in 1990 at 880 individuals with a 95% confidence interval of 638 to 1,211. Annual mortality of white sturgeon from 1982 to 1991 was 0.0374. Approximately 80% of the population was more than 20 years old and was reproductively mature. An ongoing sonic telemetry study revealed long distance movements among adults. Sturgeon regularly moved across the British Columbia-Idaho border. Sturgeon used deep holes in the river or migrated to Kootenai Lake during late fall. During spring and early summer, reproductively mature sturgeon moved from 15 to 110 kilometers upriver and congregated within 15 kilometers downriver from Bonners Ferry in areas of elevated water velocity. This behavior coincided with increasing discharge and water temperatures. The authors monitored movements of five reproductively mature female white sturgeon. The fish responded to increasing then decreasing flows by moving upriver then downriver, respectively. All five fish quickly moved to Kootenai Lake when flows dropped suddenly from higher than 20 kcfs to less than 10 kcfs. One fish was recaptured and was reabsorbing eggs. Trawling and sampling with mats of artificial substrate failed to capture white sturgeon eggs or larvae in 1992. One hundred and four age 1 and 14 age 2 hatchery-reared Kootenai white sturgeon were released into the Idaho section of the river in 1992. Telemetry of six of the larger juveniles showed general downriver movement from September into November.