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 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 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 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 Status of White Sturgeon in the Kootenai River written by Patrick Graham and published by . This book was released on 1981 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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.
Download or read book White Sturgeon written by U.S. Fish and Wildlife Service. Region 1 and published by . This book was released on 1997 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kootenai River White Sturgeon Acipenser Transmontanus Fine scale Habitat Selection and Preference Kootenai River Near Bonners Ferry Idaho 2017 written by Ryan L. Fosness and published by . This book was released on 2021 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kootenai River White Sturgeon Studies written by Paul J. Anders and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kootenai River White Sturgeon Studies written by Paul J. Anders and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Plan for the White Sturgeon Acipenser Transmontanus written by Kootenai River White Sturgeon Recovery Team (U.S.) and published by . This book was released on 1999 with total page 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 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 and Experimental Culture 1989 1990 Annual Report written by and published by . This book was released on 1991 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Setline and angling techniques were used to sample 332 sturgeon from the river between Kootenai Falls and Kootenay Lake during 1989 and 1990. Sturgeon were found in Montana within 4 km of Kootenai Falls and downstream from Bonners Ferry, Idaho to Kootenay Lake, British Columbia. Our data indicate there is a complete lack of recruitment of juveniles into the population. The youngest fish sampled was of the 1977 year class, and the population is estimated at 880 individuals with 95% confidence intervals of 638 to 1,211. Culture of one pair of sturgeon in 1990 was of limited success. Less than 5% of eggs hatched with 50% initial mortality of fry. The contribution of contaminants found in eggs (aluminum, copper, zinc, lead, and organochlorides) toward this poor survival is unknown. Handling problems with the eggs at the time of spawning complicated our results. An ongoing sonic telemetry study has revealed definite long distance movements. Sturgeon regularly move across the British Columbia-Idaho border and seek out deep holes or migrate to Kootenay Lake during late fall. Seasonal differences in use of depth and velocity parameters were found between sexes and among seasons. No relationships were found between sturgeon movement and month, water temperature, flow, and flow change. However, multiple regression analysis indicated that up to 30% of the variance in individual sturgeon movement was explained by the combination of the four variables.
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:
