Life History Migrations Of Adult Yellowstone Cutthroat Trout In The Upper Yellowstone River

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Life History Migrations of Adult Yellowstone Cutthroat Trout in the Upper Yellowstone River

Author : Brian D. Ertel
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Life History Migrations of Adult Yellowstone Cutthroat Trout in the Upper Yellowstone River by : Brian D. Ertel

Download or read book Life History Migrations of Adult Yellowstone Cutthroat Trout in the Upper Yellowstone River written by Brian D. Ertel and published by . This book was released on 2017 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of salmonid life history types at the watershed scaleis increasingly recognized as a cornerstone for effective management. In this study, we used radiotelemetry to characterize the life history movements of Yellowstone Cutthroat Trout Oncorhynchus clarkii bouvieri in the upper Yellowstone River, an extensive tributary that composes nearly half of the drainage area of Yellowstone Lake. In Yellowstone Lake, Yellowstone Cutthroat Trout have precipitously declined over the past 2 decades primarily due to predation from introduced Lake Trout Salvelinus namaycush. Radio tags were implanted in 152 Yellowstone Cutthroat Trout, and their movements monitored over 3 years. Ninety-six percent of taggedtrout exhibited a lacustrine?adfluvial life history, migrating upstream a mean distance of 42.6 km to spawn, spending an average of 24 d in the Yellowstone River before returning to Yellowstone Lake. Once in the lake, complex postspawning movements were observed. Only 4% of radio-tagged trout exhibited a fluvial or fluvial?adfluvial life history. Low prevalence of fluvial and fluvial?adfluvial life histories was unexpected given the large size of the upper river drainage. Study results improve understanding of life history diversity in potamodromous salmonids inhabiting relatively undisturbed watersheds and provide a baseline for monitoring Yellowstone Cutthroat Trout response to management actions in Yellowstone Lake.

Distribution, Movements, and Life-history Characteristics of Yellowstone Cutthroat Trout Oncorhynchus Clarkii Bouvieri in the Upper Yellowstone River Drainage

Download Distribution, Movements, and Life-history Characteristics of Yellowstone Cutthroat Trout Oncorhynchus Clarkii Bouvieri in the Upper Yellowstone River Drainage PDF Online Free

Author : Brian Daniel Ertel
Publisher :
ISBN 13 :
Total Pages : 274 pages
Book Rating : 4.:/5 (748 download)

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Book Synopsis Distribution, Movements, and Life-history Characteristics of Yellowstone Cutthroat Trout Oncorhynchus Clarkii Bouvieri in the Upper Yellowstone River Drainage by : Brian Daniel Ertel

Download or read book Distribution, Movements, and Life-history Characteristics of Yellowstone Cutthroat Trout Oncorhynchus Clarkii Bouvieri in the Upper Yellowstone River Drainage written by Brian Daniel Ertel and published by . This book was released on 2011 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distribution and abundance of Yellowstone cutthroat trout, Oncorhynchus clarkii bouvieri, has declined across the historic range because of anthropogenic influences. Habitat has been fragmented and non-native species have been introduced that compete with, feed upon, or interbreed with cutthroat trout. As a result, many cutthroat trout populations are now isolated in headwater streams and life-history forms are lost or reduced. The upper Yellowstone River basin, above Yellowstone Lake, offers a rare opportunity to study Yellowstone cutthroat trout in a large, intact, river system with few anthropogenic influences. Understanding of life-history forms present in the upper Yellowstone River basin assist in proper conservation and management of the watershed. To determine cutthroat trout life-history forms present, their abundance, and habitat preferences, a combination of radio-telemetry, electrofishing, underwater census, habitat assessment, and age and growth were used. Movements of 151 cutthroat trout were tracked by aircraft, 2003-2005. Most relocated fish (98%) followed a lacustrine-adfluvial life history migration pattern, spending an average 24 days in the river. Cutthroat began entering the river in April and most emigrated by August. Fish migrated as far as 67 km to spawn and spawning aggregations within the system were found in only 11 locations. Underwater census and electrofishing surveys were used to determine fish distribution and abundance in the Yellowstone River and its tributaries. Main stem cutthroat trout densities were low and not evenly distributed. A mean of 8 fish/500 m reach were sampled with the majority in 8 reaches. Juvenile (150 mm, 2 years old) and large adult (330 mm,4 years old) cutthroat trout were found in the main stem, but fish from 151-330 mm (age 3) were absent. Within tributaries, fish densities ranged from 1.7-49.5 fish/100 m reach. Fish up to 305 mm were sampled and ranged 1 to 4 years in age. Data from this study suggest most cutthroat trout in the upper Yellowstone River express a lacustrine-adfluvial life history, however, some fluvial fish are present in tributaries. These findings will be important in driving conservation and management decisions in this drainage and provide critical information in future ESA listing considerations.

Mortality Studies on Cutthroat Trout in Yellowstone Lake [by] Orville P. Ball and Oliver B. Cope

Author : Orville P. Ball
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Mortality Studies on Cutthroat Trout in Yellowstone Lake [by] Orville P. Ball and Oliver B. Cope by : Orville P. Ball

Download or read book Mortality Studies on Cutthroat Trout in Yellowstone Lake [by] Orville P. Ball and Oliver B. Cope written by Orville P. Ball and published by . This book was released on 1961 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a study of the Yellowstone Lake cutthroat trout, Salmo clarki lewisi, by the U.S. Fish and Wildlife Service, effects of environment on mortality of eggs, immature fish, spawners, and postspawners were measured for various components of the population in Yellowstone Lake (Wyoming). Five methods for estimating mortality of adults on spawning runs are described, with counting and tagging as the principal procedures. Of the total number of eggs deposited in the gravel, 60 to 75 percent died before hatching, and 99.6 percent had died by the time the fingerlings enetered Yellowstone Lake. In Arnica Creek runs, 48.6 percent died in the stream, 40.2 died later in the lake of natural causes, 7.6 were taken by fishermen, and 3.6 percent were alive 2 years later. The white pelican is a serious predator on cutthroat trout in Yellowstone Lake. From 1949 to 1953 fishermen caught 11.6 percent of the catchable trout available to them. Migrations of adult fish in Yellowstone Lake were traced through tagging.

Life-history Organization of Cutthroat Trout in Yellowstone Lake and Its Management Implications

Author : Robert E. Gresswell
Publisher :
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.:/5 (364 download)

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Book Synopsis Life-history Organization of Cutthroat Trout in Yellowstone Lake and Its Management Implications by : Robert E. Gresswell

Download or read book Life-history Organization of Cutthroat Trout in Yellowstone Lake and Its Management Implications written by Robert E. Gresswell and published by . This book was released on 1994 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Life-history organization of the cutthroat trout (Oncorhvnchus clarki) may be viewed at various levels, including species, subspecies, metapopulation, population, or individual. Each level varies in spatial scale and temporal persistence, and components at each level continually change with changes in environment. Cutthroat trout are widely distributed throughout the western USA, and during its evolution the species has organized into fourteen subspecies with many different life-history characteristics and habitat requirements. Within subspecies, organization is equally complex. For example, life-history traits, such as average size and age, migration strategy, and migration timing, vary among individual spawning populations of Yellowstone cutthroat trout (Oncorhvnchus clarki bouvieri) in tributary streams of Yellowstone Lake. In this study specific life-history traits of adfluvial cutthroat trout spawners from Yellowstone Lake were examined in relation to habitat of tributary drainages and subbasins of the lake. Results suggest that stream drainages vary along gradients that can be described by mean aspect, mean elevation, and drainage size. Approximately two-thirds of the variation in the timing of annual cutthroat trout spawning migrations and average size of spawners can be described by third-degree polynomial regressions with mean aspect and elevation as predictor variables. Differences in average size and growth of cutthroat trout suggested metapopulation substructure related spatial heterogeneity of environmental characteristics of individual lake subbasins. Evidence that polytypic species can adapt to heterogenous environments, even within a single lake, has implications for the conservation, restoration, and management of many freshwater fishes. Understanding the consequences of human perturbations on life-history organization is critical for management of the cutthroat trout and other polytypic salmonid species. Loss of diversity at the any hierarchical level jeopardizes long-term ability of the species to adapt to changing environments, and it may also lead to increased fluctuations in abundance and yield and increase risk of extinction. Recent emphasis on a holistic view of natural systems and their management is associated with a growing appreciation of the role of human values in these systems. The recreational fishery for Yellowstone cutthroat trout in Yellowstone National Park is an example of the effects of management on a natural-cultural system. Although angler harvest has been drastically reduced or prohibited, the recreational value of Yellowstone cutthroat trout estimated by angling factors (e.g., landing rate or size) ranks above all other sport species in Yellowstone National Park. To maintain an indigenous fishery resource of this quality with hatchery propagation is not economically or technically feasible. Nonconsumptive uses of the Yellowstone cutthroat trout including fish-watching and intangible values, such as existence demand, provide additional support for protection of wild Yellowstone cutthroat trout populations. A management strategy that reduces resource extraction has provided a means to sustain a quality recreational fishery while enhancing values associated with the protection of natural systems.

Atlas of Yellowstone

Author : W. Andrew Marcus
Publisher : Univ of California Press
ISBN 13 : 0520976924
Total Pages : 366 pages
Book Rating : 4.5/5 (29 download)

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Book Synopsis Atlas of Yellowstone by : W. Andrew Marcus

Download or read book Atlas of Yellowstone written by W. Andrew Marcus and published by Univ of California Press. This book was released on 2022-01-11 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of the award-winning Atlas of Yellowstone contains 50% new material, making it the authoritative reference for the world’s first national park on its 150th anniversary. The publication of the Atlas of Yellowstone, Second Edition coincides with the 150th anniversary of the founding of Yellowstone National Park—a major international event. The atlas is an accessible, comprehensive guide that presents Yellowstone’s story through compelling visualizations rendered by award-winning cartographers at the University of Oregon. Readers of this new edition of the Atlas of Yellowstone will explore the contributions of Yellowstone to preserving and understanding natural and cultural landscapes, to informing worldwide conservation practices, and to inspiring national parks around the world, while also learning about the many struggles the park faces in carrying out its mission. Ranging from Indigenous Americans and local economies to geysers and wildlife migrations, from the life of one wolf to the threat of wildfires, each page provides leading experts’ insights into the complexity and significance of Yellowstone. Key elements of the atlas include: More than 1,000 maps, graphics, and photographs Contributions from more than 130 experts Detailed topographic maps of Yellowstone and Grand Teton National Parks Exploration of Yellowstone National Park’s influence over 150 years on conservation practice, park management, and American culture New, detailed visualizations of wildlife that take advantage of modern GPS technology to track individual animals and entire herds Place-name origins for Yellowstone and Grand Teton National Parks and the surrounding region

Influence of Basin-scale Physical Variables on Life History Characteristics of Cutthroat Trout in Yellowstone Lake

Author : Robert E. Gresswell
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Influence of Basin-scale Physical Variables on Life History Characteristics of Cutthroat Trout in Yellowstone Lake by : Robert E. Gresswell

Download or read book Influence of Basin-scale Physical Variables on Life History Characteristics of Cutthroat Trout in Yellowstone Lake written by Robert E. Gresswell and published by . This book was released on 1997 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Individual spawning populations of Yellowstone cutthroat trout Oncorhynchus clarki bouvieri differ in life history characteristics associated with broad spatial and temporal environmental patterns, but relationships between specific life history characteristics of Yellowstone cutthroat trout and physical apsects of the environment are poorly understood. We examined basin-scale physical characteristics of tributary drainages and subbasins of Yellowstone Lake in relation to timing (peak and duration) of lacustrine-adfluvial Yellowstone cutthroat trout spawning migrations and mean length of cutthroat trout spawners in 27 tributaries to the lake. Stream drainages varied along gradients that can be described by mean aspect, mean elevation, and drainage and stream size. Approximately two-thirds of the variation in the timing of the peak of the annual cutthroat trout spawning migrations and average length of spawners was explained by third-order polynomial regressions with mean aspect and basin area as predictor variables. Because most cutthroat trout ascend tributaries soon after peak runoff, it appears that the influence of basin-scale physical variables on the date of the migration peak is manifested by the pattern of stream discharge. Spawner length does not seem to be a direct function of stream size in the Yellowstone Lake watershed, and aspect of the tributary basin seems to have a greater influence on the body length of cutthroat trout spawners than does stream size. Mechanisms that explain how the interaction of basin-scale physical variables influence spawner length were not investigated directly; however, we found evidence of distinct aggregations of cutthroat trout that are related to physical and limnological characteristics of the lake subbasins, and there is some indication that lake residence may be related to tributary location.

Yellowstone Fishes

Author : John D. Varley
Publisher : Stackpole Books
ISBN 13 : 9780811727778
Total Pages : 170 pages
Book Rating : 4.7/5 (277 download)

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Book Synopsis Yellowstone Fishes by : John D. Varley

Download or read book Yellowstone Fishes written by John D. Varley and published by Stackpole Books. This book was released on 1998 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This richly illustrated and thoroughly researched reference covers all the species of fish and every aspect of their existence in one of the most famous sport fisheries in the world. This edition includes new material on the impact of forest fires and the introduction of non-native species; an expanded chapter on angling; and an assessment of recent management policies. Full color plates and historic b&w photos.

Cutthroat

Author : Pat Trotter
Publisher : Univ of California Press
ISBN 13 : 9780520254589
Total Pages : 572 pages
Book Rating : 4.2/5 (545 download)

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Book Synopsis Cutthroat by : Pat Trotter

Download or read book Cutthroat written by Pat Trotter and published by Univ of California Press. This book was released on 2008 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cutthroat tells the full story of the genuine native trout of the American West. This new edition, thoroughly revised and updated after 20 years, synthesizes what is currently known about one of our most interesting and colorful fishes, includes much new information on its biology and ecology, asks how it has fared in the last century, and looks toward its future. In a passionate and accessibly written narrative, Patrick Trotter, fly fisher, environmental advocate, and science consultant, details the evolution, natural history, and conservation of each of the cutthroat's races and incorporates more personal reflections on the ecology and environmental history of the West's river ecosystems. The bibliography now includes what may be the most comprehensive and complete set of references available anywhere on the cutthroat trout. Written for anglers, nature lovers, environmentalists, and students, and featuring vibrant original illustrations by Joseph Tomelleri, this is an essential reference for anyone who wants to learn more about this remarkable, beautiful, and fragile western native.

Life History Characteristics and the Effects of Climate on Growth of Yellowstone Cutthroat Trout in Headwater Basins

Author : Patrick Ryan Uthe
Publisher :
ISBN 13 :
Total Pages : 85 pages
Book Rating : 4.:/5 (926 download)

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Book Synopsis Life History Characteristics and the Effects of Climate on Growth of Yellowstone Cutthroat Trout in Headwater Basins by : Patrick Ryan Uthe

Download or read book Life History Characteristics and the Effects of Climate on Growth of Yellowstone Cutthroat Trout in Headwater Basins written by Patrick Ryan Uthe and published by . This book was released on 2015 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Yellowstone Cutthroat Trout was historically distributed throughout the Upper Yellowstone and Upper Snake River drainages, but now occupies only 42% of its original range because of habitat degradation and introduced salmonid species. Many of the current strongholds are located on public land in mountainous watersheds with low human disturbance. However, knowledge of life history characteristics of headwater populations is limited. Moreover, streams throughout the Rocky Mountains have already exhibited symptoms of climate change through alterations in thermal and hydrologic regimes, but it is unknown how these changes will affect fish populations. To address these needs, we implemented a mark-recapture study on five populations of trout from Spread Creek, Wyoming, and Shields River, Montana, to estimate annual growth, survival rates, and movement patterns, and document the effects of discharge, temperature, and food availability on summer growth patterns. Survival rates were high compared to survival rates of other Cutthroat Trout subspecies and large trout generally had lower survival rates than small trout. Downstream movements out of streams by tagged trout were substantial. Annual growth rates varied among streams and size classes, but were relatively low compared to populations of Yellowstone Cutthroat Trout from large, low elevation streams. Trout grew more in length than weight in summer, suggesting an investment in structural growth rather than accumulation of reserve tissues. Temperature and discharge had strong effects on summer growth, but the effect of discharge was greater for growth in weight than in length, probably resulting from increased prey availability at high discharges. Temperature interacted with fish length such that small trout responded favorably to increased average daily temperatures near physiological optima and increased growing season length, whereas large trout responded negatively to warming temperatures. These estimates of key demographic parameters are useful in developing management and conservation strategies. Additionally, we documented that even under thermally suitable conditions, discharge can have significant effects on growth, making it important to consider multiple factors affected by climate change when devising climate adaptation strategies for coldwater fishes.

Life-history Organization of Yellowstone Cutthroat Trout (Oncorhynchus Clarki Bouvieri) in Yellowstone Lake 1994, Gresswell, Robert E.; Liss, W. J.; Larson, Gary L.

Download Life-history Organization of Yellowstone Cutthroat Trout (Oncorhynchus Clarki Bouvieri) in Yellowstone Lake 1994, Gresswell, Robert E.; Liss, W. J.; Larson, Gary L. PDF Online Free

Author : Robert E. Gresswell
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Life-history Organization of Yellowstone Cutthroat Trout (Oncorhynchus Clarki Bouvieri) in Yellowstone Lake 1994, Gresswell, Robert E.; Liss, W. J.; Larson, Gary L. by : Robert E. Gresswell

Download or read book Life-history Organization of Yellowstone Cutthroat Trout (Oncorhynchus Clarki Bouvieri) in Yellowstone Lake 1994, Gresswell, Robert E.; Liss, W. J.; Larson, Gary L. written by Robert E. Gresswell and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Life-history organization of the cutthroat trout (Oncorhynchus clarki) may be viewed at various levels, including species, subspecies, metapopulation, population, or individual. Each level varies in spatial scale and temporal persistence, and components at each level continually change with changes in environment. Cutthroat trout are widely distributed throughout the western United States, occurring in such diverse environments as coastal rivers of the Pacific Northwest and interior streams of the Great Basin. During its evolution the species has organized into 14 subspecies with many different life-history characteristics and habitat requirements. Within subspecies, organization is equally complex. For example, life-history traits, such as average size and age, migration strategy, and migration timing, vary among individual spawning populations of Yellowstone cutthroat trout (Oncorhynchus clarki bouvieri) in tributary streams of Yellowstone Lake. Understanding the effects of human perturbations on life-history organization is critical for management of the cutthroat trout and other polytypic salmonid species. Loss of diversity at any hierarchical level jeopardizes the long-term ability of the species to adapt to changing environments, and it may also lead to increased fluctuations in abundance and yield and increase the risk of extinction.

Temporal Segregation in Spawning Between Yellowstone Cutthroat Trout and Rainbow Trout

Author : John Martin Fennell
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.5/5 (381 download)

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Book Synopsis Temporal Segregation in Spawning Between Yellowstone Cutthroat Trout and Rainbow Trout by : John Martin Fennell

Download or read book Temporal Segregation in Spawning Between Yellowstone Cutthroat Trout and Rainbow Trout written by John Martin Fennell and published by . This book was released on 2021 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Native cutthroat trout populations in western North America have faced substantial declines in part due to interactions with non-native species. One such interaction, hybridization with introduced rainbow trout, is recognized as one of the most pressing concerns facing native cutthroat trout populations. I explored how one mechanism of reproductive isolation, temporal segregation, may be limiting hybridization between Yellowstone cutthroat trout and rainbow trout in the North Fork Shoshone River drainage in northwest Wyoming. Using data on adult fish spawning migration timing paired with high resolution genomic data, we provide evidence that Yellowstone cutthroat trout spawn on average 2-4.5 weeks later in the drainage than both rainbow trout and Yellowstone cutthroat trout x rainbow trout hybrids (hybrids). Additional data collected on the size and ancestry of juvenile fish in study tributaries provides further evidence that Yellowstone cutthroat trout spawn later in the spawning season compared to rainbow trout and hybrids. I also investigated how changing water temperature and discharge in the drainage throughout the spawning season may explain differences in the timing of spawning migrations between Yellowstone cutthroat trout, rainbow trout, and hybrids. Yellowstone cutthroat trout were more likely to migrate into the spawning tributary on days after the seasonal peak in stream discharge and on days where water temperature stayed at or above 6 degrees Celsius longer. While Yellowstone cutthroat trout are entering spawning tributaries later, on average, than both rainbow trout and hybrids, disproportionately high numbers of rainbow trout and hybrids paired with extended spawning seasons leads to substantial overlap between when Yellowstone cutthroat trout, rainbow trout, and hybrids are spawning in the system. Thus, I conclude that while temporal segregation in spawn timing may play some role in the persistence of unadmixed Yellowstone cutthroat trout in the drainage, additional mechanisms of reproductive isolation likely exist between the two species.

Temporal Reproductive Separation of Fluvial Yellowstone Cutthroat Trout from Rainbow Trout and Hybrids in the Yellowstone River

Author : James N. DeRito
Publisher :
ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Temporal Reproductive Separation of Fluvial Yellowstone Cutthroat Trout from Rainbow Trout and Hybrids in the Yellowstone River by : James N. DeRito

Download or read book Temporal Reproductive Separation of Fluvial Yellowstone Cutthroat Trout from Rainbow Trout and Hybrids in the Yellowstone River written by James N. DeRito and published by . This book was released on 2010 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yellowstone cutthroat trout Oncorhynchus clarkii bouvierii are genomically extinct throughout much of their historic range because of displacement by and introgression with introduced rainbow trout O. mykiss. However, fluvial Yellowstone cutthroat trout still retain their genetic integrity while coexisting with rainbow trout in the Yellowstone River. We assessed whether spatial or temporal reproductive isolation, or both, occurs between these taxa. Time and place of spawning was determined by radiotelemetry. We implanted 164 trout (98 cutthroat trout, 37 rainbow trout, and 29 cutthroat trout ? rainbow trout hybrids) with radio tags before the 2001, 2002, and 2003 spawning seasons in four sections of a 140-km segment of the main-stem Yellowstone River. Of the 164 radio-tagged fish, 73 (44 Yellowstone cutthroat trout, 15 rainbow trout, and 14 hybrids) were assumed to have spawned; 55 (75.3%) used 16 tributaries, 17 (23.3%) used 7 river side channels, and 1 (1.4%) used the main channel of the Yellowstone River for spawning. The majority of fish that spawned (62%) used five spawning areas. Spawning area and spawning reach overlap index values were high among all taxa. In contrast, the mean migration and spawning dates of rainbow trout and hybrids were 5?9 weeks earlier than those of cutthroat trout. Rainbow trout and hybrids began migrating and spawning in April and May when Yellowstone River discharges were lower and water temperatures were colder than during cutthroat trout migration and spawning in June and July. The spawning period overlap index values (rainbow trout and hybrids versus cutthroat trout) were typically less than half the spatial overlap index values. Therefore, the difference in time of spawning is probably the predominant mechanism maintaining reproductive isolation among fluvial trout. Management actions focused on protecting and enhancing later-spawning cutthroat trout in tributaries may enhance their temporal reproductive separation from earlier-spawning rainbow trout and hybrids.

Biology, Status, and Management of Yellowstone Cutthroat Trout

Author : Robert E. Gresswell
Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Biology, Status, and Management of Yellowstone Cutthroat Trout by : Robert E. Gresswell

Download or read book Biology, Status, and Management of Yellowstone Cutthroat Trout written by Robert E. Gresswell and published by . This book was released on 2011 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yellowstone cutthroat trout Oncorhynchus clarkii bouvieri were historically distributed in the Yellowstone River drainage (Montana and Wyoming) and the Snake River drainage (Wyoming, Idaho, Utah, Nevada, and probably Washington). Individual populations evolved distinct life history characteristics in response to the diverse environments in which they were isolated after the last glaciation. Anthropogenic activities have resulted in a substantial decline (42% of the historical range is currently occupied; 28% is occupied by core [genetically unaltered] populations), but the number of extant populations, especially in headwater streams, has precluded listing of this taxon under the Endangered Species Act. Primary threats to persistence of Yellowstone cutthroat trout include (1) invasive species, resulting in hybridization, predation, disease, and interspecific competition; (2) habitat degradation from human activities such as agricultural practices, water diversions, grazing, dam construction, mineral extraction, grazing, timber harvest, and road construction; and (3) climate change, including an escalating risk of drought, wildfire, winter flooding, and rising temperatures. Extirpation of individual populations or assemblages has led to increasing isolation and fragmentation of remaining groups, which in turn raises susceptibility to the demographic influences of disturbance (both human and stochastic) and genetic factors. Primary conservation strategies include (1) preventing risks associated with invasive species by isolating populations of Yellowstone cutthroat trout and (2) connecting occupied habitats (where possible) to preserve metapopulation function and the expression of multiple life histories. Because persistence of isolated populations may be greater in the short term, current management is focused on isolating individual populations and restoring habitats; however, this approach implies that humans will act as dispersal agents if a population is extirpated because of stochastic events.

Catching Yellowstone's Wild Trout

Author : Chris Hunt
Publisher : Arcadia Publishing
ISBN 13 : 1439667128
Total Pages : 151 pages
Book Rating : 4.4/5 (396 download)

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Book Synopsis Catching Yellowstone's Wild Trout by : Chris Hunt

Download or read book Catching Yellowstone's Wild Trout written by Chris Hunt and published by Arcadia Publishing. This book was released on 2019-06-17 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: This history and guide to the fly-fishing waters of Yellowstone National Park is a loving homage to the region’s iconic wild trout. Yellowstone National Park is home to some of the most storied destinations in the history of fly fishing. Casting in the Firehole River is like going back in time to when bison roamed nearly every meadow in the West. Restored to their natal streams after near extinction, native Arctic grayling can once again be plucked from icy water at the foot of breathtaking waterfalls. Meanwhile, a daylong hike into true wild country rewards an angler with a chance to catch trophy native cutthroat trout on a lonely mountain lake. In Catching Yellowstone’s Wild Trout, local journalist and experienced angler Chris Hunt explores the rich history of these beloved and bountiful waters.

The Imperiled Cutthroat

Author : Greg French
Publisher : Patagonia
ISBN 13 : 1938340582
Total Pages : 268 pages
Book Rating : 4.9/5 (383 download)

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Book Synopsis The Imperiled Cutthroat by : Greg French

Download or read book The Imperiled Cutthroat written by Greg French and published by Patagonia. This book was released on 2016-05-16 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yellowstone, the world’s first national park and one of America’s truly great trout fisheries, has been a crucible for ideas on how to look after wild places. Renowned Australian fishing writer Greg French gives a sparkling firsthand account of how the park’s history, landscapes, wildlife, and people have touched anglers worldwide — and why this matters. The Imperiled Cutthroat is a travelogue that covers the story of the Yellowstone cutthroat trout: its discovery, biology, decimation, modern-day allure, and uncertain future. Although set against the dramatic backdrop of Yellowstone, comparisons to Australia, New Zealand, and Europe are inevitable. It is a cautionary tale too, ending up in Mongolia, which is as pristine as Montana once was. The Yellowstone fishery is at a crossroads, and debate about what to do is dangerously narrow. Anglers everywhere need to be constantly reminded that hatcheries are far from a panacea for ailing fisheries: fostering conservation of the natural environmental delivers far better outcomes at a fraction of the cost. The power of Greg’s stories comes not just from the quality of the writing but also from the quirks and passions of the people he meets. Greg's compelling storytelling enthralls anglers and naturalists the world over.

BTWE Yellowstone River - July 28, 1991 - Yellowstone National Park

Author : Gary David Blount
Publisher : [email protected]
ISBN 13 :
Total Pages : 50 pages
Book Rating : 4./5 ( download)

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Book Synopsis BTWE Yellowstone River - July 28, 1991 - Yellowstone National Park by : Gary David Blount

Download or read book BTWE Yellowstone River - July 28, 1991 - Yellowstone National Park written by Gary David Blount and published by [email protected]. This book was released on 2016-08-31 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gary David Blount’s Rocky Mountain Fishing Journals: Perpetual Wild Trout Recapture Angling Journal “A Public Fisheries Project” The purpose of this: Perpetual Wild Trout Recapture Angling Journal “A Public Fisheries Project” is to be the initial public Social Media generated “Wild Trout Fisheries” data base site to monitor and publish the variable changes in our “Wild Trout” fisheries for Perpetuity”. This is an invitation for you, your friends or your fishing club to participate in conducting recaptures: “Angling Day’s” published in all of Gary David Blount Rocky Mountain Fishing Journals. These Rocky Mountain Fishing Journals encompass 35-years and contain over 1,500 - “Angling Day’s” documenting the daily “Wild Trout” catch rates, water temperature, water level, water turbidity, air temperature, weather conditions, daily hatches, stomach analysis from “Wild Trout” landed, “GDB” Custom Flies fished, fly fishing presentations, trout species, trout lengths and geographic location on over 35-different bodies of water in Montana, Wyoming, Yellowstone National Park, Idaho and Washington. This Perpetual cursory research projects objective is to ascertain skilled or professional anglers at [email protected] and have them return to each body of water on the precise date, geographic location and time period fished contained in every one of my Rocky Mountain Fishing Journals. Each ascertain skilled or professional angler will document their “Angler Day” using the same format I used in each one of my Rocky Mountain Fishing Journals along with their “Angler Day” photographs in “JPEG” format. Each skilled or professional anglers “Angling Day” written documentation and photographs will be e-mailed to [email protected] and I will publish them in Gary David Blount “Yearly” Perpetual Rocky Mountain Fishing Journal. To preview excerpts from each one of Gary David Blount Rocky Mountain Fishing Journals go to books.google.com and to view on You Tube.com in the search bar type Gary David Blount Rocky Mountain Fishing Journals. Introduction The Yellowstone River within Yellowstone National Park is the world’s best Yellowstone Cutthroat Trout fishery. The Yellowstone River within the park can be divided into three-distinctive sections. The headwaters of the Yellowstone River begin on the east side of the Continental Divide from the Shoshone Mountain Range of Wyoming. The Yellowstone River flows northerly into Yellowstone Lake, elevation 7,733-feet. Yellowstone Lake is the largest lake at this elevation on the continent. The mid-section of the Yellowstone River, which flows out of Yellowstone Lake downstream to the Upper Falls of the Yellowstone River lies the world renown section of the Yellowstone River where hundreds of people flock to on July 15th “Opening Day” every year. The lower section, below the Lower Falls of the Yellowstone River flows through the Canyon of the Yellowstone downstream to the Yellowstone National Park Boundary, by the town of Gardner, Montana is probably the least fished section of the Yellowstone River. The fishing seasons opens July 15th every year which allows the Yellowstone Cutthroat Trout Brood Stock to spawn and gives the Yellowstone Cutthroat Fry time to emerge from the redds before the wade fishermen can step on them. The headwaters and mid-section of the Yellowstone River are the major spawning areas for the Yellowstone Lake Cutthroat Trout Fishery. The Yellowstone River is a premiere dry fly fishing river with prolific hatches of May Flies: Early Blue-Winged Olive (Baetis tricaudatus), Late Blue-Winged Olive (Baetis parvus), Little Western Blue-Winged Olive (Ephemerella margarita), Western Green Drake (Drunella grandis), Pale Morning Dun (Ephemerella inermis and Ephemerella infrequens) and Small Western Green Drake (Ephemerella flavilinea); Stone Flies: Salmon Fly (Pteronarcys californica), Western Big Golden Stone Fly (Calineuria californica), Western Medium Golden Brown Stone Fly (Isoperla sp.) and Little Yellow Stone Fly (Alloperla pallidula); Caddis: Green Sedge (Ryacophila sp.), Little Tan Short Horn Sedge (Glossosoma sp.), Spotted Sedge (Hydropsyche sp.) and Giant Orange Sedge (Dicosmoecus sp.).

BTWE Yellowstone River - August 15, 1989 - Yellowstone National Park

Author : Gary David Blount
Publisher : [email protected]
ISBN 13 :
Total Pages : 51 pages
Book Rating : 4./5 ( download)

DOWNLOAD NOW!

Book Synopsis BTWE Yellowstone River - August 15, 1989 - Yellowstone National Park by : Gary David Blount

Download or read book BTWE Yellowstone River - August 15, 1989 - Yellowstone National Park written by Gary David Blount and published by [email protected]. This book was released on 2016-08-31 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gary David Blount’s Rocky Mountain Fishing Journals: Perpetual Wild Trout Recapture Angling Journal “A Public Fisheries Project” The purpose of this: Perpetual Wild Trout Recapture Angling Journal “A Public Fisheries Project” is to be the initial public Social Media generated “Wild Trout Fisheries” data base site to monitor and publish the variable changes in our “Wild Trout” fisheries for Perpetuity”. This is an invitation for you, your friends or your fishing club to participate in conducting recaptures: “Angling Day’s” published in all of Gary David Blount Rocky Mountain Fishing Journals. These Rocky Mountain Fishing Journals encompass 35-years and contain over 1,500 - “Angling Day’s” documenting the daily “Wild Trout” catch rates, water temperature, water level, water turbidity, air temperature, weather conditions, daily hatches, stomach analysis from “Wild Trout” landed, “GDB” Custom Flies fished, fly fishing presentations, trout species, trout lengths and geographic location on over 35-different bodies of water in Montana, Wyoming, Yellowstone National Park, Idaho and Washington. This Perpetual cursory research projects objective is to ascertain skilled or professional anglers at [email protected] and have them return to each body of water on the precise date, geographic location and time period fished contained in every one of my Rocky Mountain Fishing Journals. Each ascertain skilled or professional angler will document their “Angler Day” using the same format I used in each one of my Rocky Mountain Fishing Journals along with their “Angler Day” photographs in “JPEG” format. Each skilled or professional anglers “Angling Day” written documentation and photographs will be e-mailed to [email protected] and I will publish them in Gary David Blount “Yearly” Perpetual Rocky Mountain Fishing Journal. To preview excerpts from each one of Gary David Blount Rocky Mountain Fishing Journals go to books.google.com and to view on You Tube.com in the search bar type Gary David Blount Rocky Mountain Fishing Journals. Introduction The Yellowstone River within Yellowstone National Park is the world’s best Yellowstone Cutthroat Trout fishery. The Yellowstone River within the park can be divided into three-distinctive sections. The headwaters of the Yellowstone River begin on the east side of the Continental Divide from the Shoshone Mountain Range of Wyoming. The Yellowstone River flows northerly into Yellowstone Lake, elevation 7,733-feet. Yellowstone Lake is the largest lake at this elevation on the continent. The mid-section of the Yellowstone River, which flows out of Yellowstone Lake downstream to the Upper Falls of the Yellowstone River lies the world renown section of the Yellowstone River where hundreds of people flock to on July 15th “Opening Day” every year. The lower section, below the Lower Falls of the Yellowstone River flows through the Canyon of the Yellowstone downstream to the Yellowstone National Park Boundary, by the town of Gardner, Montana is probably the least fished section of the Yellowstone River. The fishing seasons opens July 15th every year which allows the Yellowstone Cutthroat Trout Brood Stock to spawn and gives the Yellowstone Cutthroat Fry time to emerge from the redds before the wade fishermen can step on them. The headwaters and mid-section of the Yellowstone River are the major spawning areas for the Yellowstone Lake Cutthroat Trout Fishery. The Yellowstone River is a premiere dry fly fishing river with prolific hatches of May Flies: Early Blue-Winged Olive (Baetis tricaudatus), Late Blue-Winged Olive (Baetis parvus), Little Western Blue-Winged Olive (Ephemerella margarita), Western Green Drake (Drunella grandis), Pale Morning Dun (Ephemerella inermis and Ephemerella infrequens) and Small Western Green Drake (Ephemerella flavilinea); Stone Flies: Salmon Fly (Pteronarcys californica), Western Big Golden Stone Fly (Calineuria californica), Western Medium Golden Brown Stone Fly (Isoperla sp.) and Little Yellow Stone Fly (Alloperla pallidula); Caddis: Green Sedge (Ryacophila sp.), Little Tan Short Horn Sedge (Glossosoma sp.), Spotted Sedge (Hydropsyche sp.) and Giant Orange Sedge (Dicosmoecus sp.).