Download or read book Investigations of Forage Fish and Lake Trout Salvelinus Namaycush Interactions in Flaming Gorge Reservior Wyoming Utah written by Daniel L. Yule and published by . This book was released on 1992 with total page 240 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 2000 with total page 1106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fisheries Review written by and published by . This book was released on 1993 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Salmonid Field Protocols Handbook written by David H. Johnson and published by . This book was released on 2007 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first publication to collect, standardize, and recommend a scientifically rigorous set of field protocols for monitoring and assessing salmon and trout populations. Includes five additional techniques that can be used with any of the 13 principle methods to supplement information gathered.Over four dozen fisheries experts throughout the U.S. Pacific Northwest and beyond contributed their time to pick, write, and review the most reliable protocols for enumerating salmonids in the field. Presented in an easy to use format, each of the 18 peer-reviewed protocols covers objectives, sample design, data handling, personnel and operational requirements, and field and office techniques, including survey forms.Standardized monitoring protocols will improve data reliability, maximize opportunities for data sharing and data set comparability, and ultimately improve the ability to assess status and trends. The Handbook will also support consistency in data collection for salmonids at the international level.

Download or read book Trophic Ecology of Lake Trout Salvelinus Namaycush in Flaming Gorge Reservoir Utah Wyoming written by Thomas C. Roberts and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Trout (Salvelinus namaycush) are apex predators that were first introduced into Flaming Gorge Reservoir, Utah-Wyoming in 1979 and have been self-sustaining since 1989. However, our understanding of their trophic ecology and subsequent effects on other fish species within this reservoir is limited. I assessed feeding dynamics of Lake Trout through traditional diet analyses and stable isotope analyses of muscle and liver tissues, and compare these outputs to patterns of Lake Trout growth rates and size structure. By integrating Lake Trout feeding dynamics with population demographics, I infer potential impacts of Lake Trout predation on prey fish. Lake Trout consumed a wide breadth of prey items across their ontogeny, but consumed a higher proportion of fish as their length increased. Stable isotope analyses suggested a higher reliance on fish prey than was described by stomach content analysis; however, estimates of feeding dynamics were comparable across methods. Growth models suggest that Lake Trout exhibited two distinct growth trajectories which indicate a divergent foraging strategy among individuals. I conclude that Lake Trout predation could be an important driver of game and non-game fish populations. While more information is needed, results suggest current length class definitions used for Lake Trout harvest regulations may not reflect observed ecological breakpoints. Further research such as bioenergetics modeling and fishing related mortality estimates are needed to fully understand ecological dynamics of this apex predator within Flaming Gorge Reservoir.

Download or read book Aquatic Sciences and Fisheries Abstracts written by and published by . This book was released on 1994-03 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology Abstracts written by and published by . This book was released on 1994 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.

Download or read book Flaming Gorge Reservoir Fisheries Investigations written by Utah. Division of Wildlife Resources and published by . This book was released on 1982 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chlorinated Hydrocarbons as a Factor in the Reproduction and Survival of Lake Trout Salvelinus Namaycush in Lake Michigan written by and published by . This book was released on 1981 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Background of Flaming Gorge Reservoir Fisheries Investigations written by Roderick C. Stone and published by . This book was released on 1979 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Green River and Flaming Gorge Reservoir written by Utah. Division of Fish and Game and published by . This book was released on 1966 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flaming Gorge Reservoir Fisheries Investigations written by Steve Brayton and published by . This book was released on 1990 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Food Habits of Trout in Flaming Gorge Reservoir written by Robert W. Wiley and published by . This book was released on 1973* with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response of Lake Trout and Rainbow Trout to Dietary Cellulose written by Hugh A. Poston and published by . This book was released on 1986 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Green River and Flaming Gorge Reservoir Post impoundment Investigations written by Utah. Division of Fish and Game and published by . This book was released on 1967* with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Affecting the Growth of Rainbow Trout in Flaming Gorge Reservoir Utah Wyoming written by Tyler M. Haddix and published by . This book was released on 2004 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Chemical Markers Identify Source and Date of Introduction of an Exotic Species Lake Trout Salvelinus Namaycush in Yellowstone Lake written by Andrew Roy Munro and published by . This book was released on 2005 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exotic species invasions pose a pervasive threat to aquatic ecosystems worldwide, yet fundamental questions about the geographic origin and timing of invasions or introductions are frequently difficult to answer. We used natural chemical markers (Sr:Ca ratios) in otoliths to identify probable source and date of introduction of exotic lake trout (Salvelinus namaycush) into Yellowstone Lake, Wyoming, USA. Otolith Sr:Ca ratios were significantly different among lake trout known to have reared in three different Yellowstone National Park lakes (Yellowstone, Heart, and Lewis lakes) and showed little variation along the otolith axis, indicating that lake trout within each lake experienced a similar, and consistent, environmental history. In contrast, suspected transplants showed a large and rapid increase in otolith Sr:Ca ratios indicative of a marked shift to water of differing chemistry. Timing of the abrupt change in Sr:Ca ratios indicated that some lake trout were introduced into Yellowstone Lake during the late 1980s, but more recent transplants also occurred. A discriminant model identified Lewis Lake as the likely source lake for lake trout transplanted into Yellowstone Lake. Our results demonstrate that chemical signatures within otoliths can serve as an important forensic tool for identifying the probable source and date of exotic fish introductions.