Download or read book Bull Trout Spawning and Rearing Habitat Requirements Summary of the Literature written by Baxter, J. S and published by . This book was released on 1996 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a literature review summarizing the spawning and rearing habitat requirements of bull trout, Salvelinus confluentus, during the stream phases of the fish's life history. The literature search focused primarily on literature that is difficult to obtain for most fisheries biologists. The data from 42 articles that contained information pertaining to rearing and spawning habitat use are summarized in a tabular format. The habitat variables summarized for rearing bull trout are: water temperature, water depth, water velocity, cover, and substrate. Measures of habitat use that are summarized are: water depth, cover water velocity, and substrate.

Download or read book Demographic and Habitat Requirements for Conservation of Bull Trout written by Bruce E. Rieman and published by . This book was released on 1993 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Native Fish Habitat Conservation Plan Proposed Permit for Taking of Federally Listed Native Fish Species on Plum Creek Timber Company Inc Lands WA MT ID written by and published by . This book was released on 1999 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Using a Spatially Explicit Approach to Evaluate Bull Trout Spawning Habitat Selection written by James Slayton Lamperth and published by . This book was released on 2012 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Watershed scale Monitoring Protocol for Bull Trout written by Dan Isaak and published by . This book was released on 2009 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Demographic and Habitat Requirements for Conservation of Bull Trout written by Bruce E. Rieman and published by Cascade Geographic Society. This book was released on 1997-04-01 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spawning and Early Life history Characteristics of Bull Trout in a Headwater lake Ecosystem written by Lora Beth Tennant and published by . This book was released on 2010 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bull trout, Salvelinus confluentus, are in decline throughout their native range. Interaction with nonnative species is considered to be one of the drivers of bull trout decline. Bull trout exhibit a variety of life-history strategies and lacustrine-adfluvial bull trout seem to be particularly susceptible to population decline when nonnative lake trout, S. namaycush, invade or are introduced into lakes where bull trout are the dominant salmonid. Quartz Lake in Glacier National Park, Montana, provided a unique opportunity to gather information on the spawning and early life-history characteristics of a bull trout population prior to anticipated declines in bull trout abundance due to lake trout invasion. The objectives of this study were (1) to characterize the spatial and temporal dynamics of bull trout spawning migrations and associate areas of high redd accumulation to abiotic factors, and (2) to quantify the influence of abiotic factors on the distribution of subadult bull trout in tributary streams of Quartz Lake. Stream surveys were conducted to quantify physical habitat characteristics in the study area, backpack electrofishing was used to sample subadult bull trout rearing in lake tributaries, and redd surveys were used to investigate the spatial and temporal trends in the accumulation of bull trout redds. Bull trout redds and subadult bull trout were found throughout the study area; however, bull trout spawning and rearing appeared to be concentrated in lower Quartz Creek. This area was low gradient, and there was a high percent of gravel and cobble substrates. Bull trout spawning began in late September, peaked in early October, and concluded in mid-October. These data provide important information on bull trout life-history in headwater lakes and provide biologists with baseline data that will be useful for assessing the effects of lake trout suppression efforts that began in 2009.

Download or read book Canadian Journal of Zoology written by and published by . This book was released on 1999 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitat Conditions Affecting Bull Trout Salvelinus Confluentus Spawning Areas Within the Yakima River Basin Washington written by Scott David Craig and published by . This book was released on 1997 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Demographic and Habitat Requirements for Conservation of Bull Trout written by 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 North American Journal of Fisheries Management written by and published by . This book was released on 1997 with total page 1222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Relationship Between Land Management Activities and Habitat Requirements of Bull Trout written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report INT written by and published by . This book was released on 1993 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigations of Bull Trout Salvelinus Confluentus Steelhead Trout Oncorhynchus Mykiss and Spring Chinook Salmon O Tshawytscha Interactions in Southeast Washington Streams written by Steven W. Martin and published by . This book was released on 1992 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Bull trout (Salvelinus confluentus) are native to many tributaries of the Snake River in southeast Washington. The Washington Department of Wildlife (WOW) and the American Fisheries Society (AFS) have dentified bull trout as a species of special concern which means that they may become threatened or endangered by relatively minor disturbances to their habitat (Williams et al.1989). Steelhead trout/rainbow trout (Oncorhynchus mykiss) and spring chinook salmon (O. tshawytscha) are also native to several tributaries of the Snake River in southeast Washington. These species of migratory fishes are depressed, partially due to the construction of several dams on the lower Snake River. In response to decreased run size, large hatchery programs were initiated to produce juvenile steelhead and salmon to supplement repressed tributary stocks, a practice known as supplementation. There is a concern that supplementing streams with artificially high numbers of steelhead and salmon may have an impact on resident bull trout in these streams. Historically, these three species of fish existed together in large numbers, however, the amount of high-quality habitat necessary for reproduction and rearing has been severely reduced in recent years, as compared to historic amounts. The findings of the first year of a two year study aimed at identifying species interactions in southeast Washington streams are presented in this report. Data was collected to assess population dynamics, habitat utilization and preference, feeding habits, fish movement and migration, age, condition, growth, and the spawning requirements of bull trout in each of four streams. A comparison of the indices was then made between the study streams to determine if bull trout differ in the presence of the putative competitor species. Bull trout populations were highest in the Tucannon River (supplemented stream), followed by Mill Creek (unsupplemented stream). Young of the year bull trout utilized riffle and cascade habitat the most in all four streams. Juvenile bull trout utilized scour pool and run habitat the most in all four streams. YOY bull trout preferred plunge pool and scour pool habitat, as did juvenile bull trout in all four streams. These data show that while in the presence of the putative competitors, bull trout prefer the same habitat as in the absence of the putative competitors. Juvenile bull trout preferred mayflies and stoneflies in Mill Creek, while in the presence of the competitor species they preferred caddisflies, stoneflies, and Oligochaeta. It is felt that this difference is due to the differences in food items available and not species interactions; bull trout consume what is present. Adult bull trout were difficult to capture, and therefore it was difficult to determine the migratory habits in the Tucannon River. It is recommended that future studies use radio telemetry to determine the migratory habitat of these fish. The age, condition, and growth rates of bull trout differed only minimally between streams, indicating that if competitive interactions are occurring between these species it is not reflected by: 1) The length at age of bull trout; 2) The length-weight relationship of bull trout; or, 3) The rate of growth of bull trout. The spawning habits of bull trout and spring chinook salmon are similar in the Tucannon River, however it was found that they spawn in different river locations. The salmon spawn below river kilometer 83, while 82% of bull trout spawn above that point. The peak of spawning for salmon occurred 10 days before the peak of bull trout spawning, indicating that very little competition for spawning locations occurs between these species in the Tucannon River. Future species interactions study recommendations include the use of electrofishing to enumerate bull trout populations, snorkeling to identify micro-habitat utilization, seasonal diet analysis, and radio transmitters to identify seasonal migration patterns of bull trout"--Document.

Download or read book Bull Trout Spawning Survey Report written by Ray Perkins and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wallowa Whitman National Forest N F Hells Canyon National Recreation Area N R A Comprehensive Management Plan Baker County Wallowa County written by and published by . This book was released on 1996 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wild Trout VII written by and published by . This book was released on 2000 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: