Download or read book The Effects of Invasive Brook Trout Removal on Native Colorado River Cutthroat Trout in a Small Headwater Stream in Northeastern Utah written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of invasive brook trout removal on native Colorado River cutthroat trout in a small headwater stream in northeastern Utah.
Download or read book The Effects of Invasive Brook Trout Removal on Native Colorado River Cutthroat Trout in a Small Headwater Stream in Northeastern Utah written by Garn J. Birchell and published by . This book was released on 2007 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introductory Fisheries Analyses with R written by Derek H. Ogle and published by CRC Press. This book was released on 2018-09-03 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: A How-To Guide for Conducting Common Fisheries-Related Analyses in R Introductory Fisheries Analyses with R provides detailed instructions on performing basic fisheries stock assessment analyses in the R environment. Accessible to practicing fisheries scientists as well as advanced undergraduate and graduate students, the book demonstrates the flexibility and power of R, offers insight into the reproducibility of script-based analyses, and shows how the use of R leads to more efficient and productive work in fisheries science. The first three chapters present a minimal introduction to the R environment that builds a foundation for the fisheries-specific analyses in the remainder of the book. These chapters help you become familiar with R for basic fisheries analyses and graphics. Subsequent chapters focus on methods to analyze age comparisons, age-length keys, size structure, weight-length relationships, condition, abundance (from capture-recapture and depletion data), mortality rates, individual growth, and the stock-recruit relationship. The fundamental statistical methods of linear regression, analysis of variance (ANOVA), and nonlinear regression are demonstrated within the contexts of these common fisheries analyses. For each analysis, the author completely explains the R functions and provides sufficient background information so that you can confidently implement each method. Web Resource The author’s website at http://derekogle.com/IFAR/ includes the data files and R code for each chapter, enabling you to reproduce the results in the book as well as create your own scripts. The site also offers supplemental code for more advanced analyses and practice exercises for every chapter.
Download or read book Conservation Status of Colorado River Cutthroat Trout written by and published by . This book was released on 1996 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Nonnative Brook Trout on Colorado River Cutthroat Trout Populations written by Douglas P. Peterson and published by . This book was released on 2000 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brown Trout written by Javier Lobón-Cerviá and published by John Wiley & Sons. This book was released on 2017-12-18 with total page 821 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brown Trout: Biology, Ecology and Management A comprehensive guide to the most current research, history, genetics and ecology of the brown trout including challenging environmental problems The brown trout is an iconic species across its natural European distribution and has been introduced throughout the World. Brown Trout offers a comprehensive review of the scientific information and current research on this major fish species. While the brown trout is the most sought species by anglers, its introduction to various waters around the world is causing serious environmental problems. At the same time, introduction of exogenous brown trout lineages threats conservation of native gene pools of populations in many regions. The authors summarize the important aspects of the brown trout’s life history and ecology and focus on the impact caused by the species. The text explores potential management strategies in order to maintain numerous damaged populations within its natural distributional range and to ameliorate its impacts in exotic environments. The authors include information on a wide-range of topics such as recent updates in population genetics, evolutionary history, reproductive traits and early ontogeny, life history plasticity in anadromous brown trout and life history of the adfluvial brown trout and much more. This vital resource: Contains the latest research on the biology and ecology of brown trout Includes information on phylogeography, genetics, population dynamics and stock management Spotlights the brown trout’s introduction to regions around the world and the serious environmental impacts Offers a comprehensive review of conservation and management techniques Written for salmonid scientists and researchers, fishery and environmental managers, and students of population genetics, ecology and population dynamics, Brown Trout explores the most recent findings on the history, ecology and sustainability of this much-researched species.
Download or read book Conservation Plan for Colorado River Cutthroat Trout Oncorhynchus Clarki Pleuriticus for the Little Snake River Drainage in Southeastern Wyoming written by and published by . This book was released on 1994 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Colorado River cutthroat trout (Oncorhynchus clarki pleuriticus) historically occupied portions of the Colorado River drainage in Wyoming, Colorado, Utah, Arizona, and New Mexico. Today this subspecies only occupies a fraction of its historical range is primarily located in small headwater streams. Colorado River cutthroat trout is a category 2 species (one that may be appropriate for listing as threatened or endangered) by the USDI Fish and Wildlife Service and is considered a sensitive species by Region 2 of the Forest Service. This conservation strategy is a continuation of efforts started in 1987 under a comprehensive management plan for Colorado River cutthroat trout in Wyoming"--Page ii.
Download or read book The Effects of Forest Debris Removal on a Population of Resident Cutthroat Trout in a Small Headwater Stream written by Lawrence C. Lestelle and published by . This book was released on 1978 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Instream Flow Determination and Impact Evaluation of Water Diversion on the Colorado River Cutthroat Trout and Brook Trout in the North Fork and Roaring Fork of the Little Snake River Drainage written by Dennis M. Jespersen and published by . This book was released on 1979 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Habitat Degradation on Colorado River Cutthroat Trout Populations in Uinta Mountain Streams written by Dona L. Horan and published by . This book was released on 1996 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Requirements of Young Colorado River Cutthroat Trout in Relation to Alterations in Streamflow written by Frank J. Rahel and published by . This book was released on 1989 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservation Status of Colorado River Cutthroat Trout written by and published by . This book was released on 1996 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Greenback Cutthroat Trout Recovery Plan written by Greenback Cutthroat Trout Recovery Team and published by . This book was released on 1983 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trophic Roles of Native Greenback Cutthroat Trout and Non native Brook Trout in Montane Streams of Colorado written by and published by . This book was released on 2004 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The greenback cutthroat trout (Oncorhynchus clarki stomias) is classified as a threatened subspecies under the U.S. Endangered Species Act. Non-native brook trout (Salvelinus fontinalis) displace greenback cutthroat trout in montane streams, but the mechanisms for displacement are not understood. In this study, data on population dynamics, body condition, and feeding ecology of greenback cutthroat and brook trout were used in investigating competition for food and predation as potential mechanisms for displacement of greenback cutthroat trout by brook trout. During 2000 and 2001, trout populations and physical habitat were surveyed at 10 stream reaches in the South Platte and Arkansas River drainages in Colorado. Study areas included sites with (1) cutthroat trout only, (2) brook trout only, (3) both species, and (4) both species with experimental removal of brook trout. Complementary techniques, including analysis of stomach contents, stomach fullness, body condition, and stable isotopes of C and N, were used to describe the trophic niche of each species across the 10 sites.
Download or read book Native Trout Conservation written by Mary McAfee and published by . This book was released on 2001 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Movement and Habitat Use of Bonneville Cutthroat Trout Oncorhynchus Clarki Utah written by Ryan L. Lokteff and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Movement patterns and habitat use of Bonneville cutthroat trout (Oncorhynchus clarki Utah) in tributaries of the Logan River watershed are greatly affected by habitat alterations created by North American Beaver (Castor canadensis). Evaluation of cutthroat trout habitat use in these watersheds is also complicated by biotic interactions with invasive brown trout (Salmo trutta) and brook trout (Salvelinus fontinalis). My objectives in this thesis were to 1.) Evaluate the passage of beaver dams by each trout species in the Temple Fork watershed and 2.) Evaluate the habitat use of cutthroat trout in the presence of brown trout and brook trout over a range of spatial scales. To address these objectives, 1381 trout were tagged with passive integrated transponder tags. Their locations were recorded using a combination of annual capture/recapture surveys, stationary in-stream antennas, and monthly continuous mobile antenna surveys. To address objective 1, sh were located above and below 22 beaver dams to establish whether sh passed dams and to identify downstream and upstream passage; 187 individual trout were observed making 481 passes of all 22 beaver dams. Native Bonneville cutthroat trout passed dams more frequently than both non-native brown trout and brook trout. It was determined that spawning timing affected seasonal changes in dam passage for each species. Physical characteristics of dams such as height and upstream location affected the passage of each species. Movement behaviors of each trout species were also evaluated to help ex- plain dam passage. These data suggest beaver dams are not acting as barriers to movement for cutthroat and brook trout but may be impeding the movements of invasive brown trout. To address objective 2, a hierarchical classification of stream habitat was created using the River Styles framework. The River Styles framework not only establishes a relationship between habitats at dierent scales, but also attempts to understand the processes that create and maintain those habitats. The location of each sh observation was associated with habitats at the stream, landscape unit, River Style, and geomorphic unit levels. Habitat use of each species of sh was evaluated at each spatial scale using all sh observations over the four-year study period. Hotspot locations, or locations used consistently by a species of sh consistently through time, were also evaluated across the entire study period and over each year. It was found that brook trout almost exclusively use the beaver ponds and beaver-altered habitats in Spawn Creek. Brown trout were not found in the upper- most parts of both Spawn Creek and Temple Fork. They were also found more than the other species in pools created by bedrock or man-made control features, suggesting that they select highly stable habitats. Cutthroat trout were found more than brown trout in beaver-altered habitats and lateral scour pools, suggesting that they select more dynamic, naturally occurring habitats.
Download or read book The Effects of Water Temperature on Interactions Between Colorado River Cutthroat Trout Oncorhynchus Clarki Pleuriticus and Brook Trout Salvelinus Fontinalis written by James De Staso and published by . This book was released on 1993 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
