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Book Effects of Urbanization and Pollution on the Home Range and Movements of Brown Trout Salmo Trutta in Valley Creek Valley Forge Pennsylvania

Download or read book Effects of Urbanization and Pollution on the Home Range and Movements of Brown Trout Salmo Trutta in Valley Creek Valley Forge Pennsylvania written by Jason Henry Knouft and published by . This book was released on 1996 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Urbanization on Brown Trout Salmo Trutta Other Fishes and Macroinvertebrates in Valley Creek Valley Forge Pennsylvania

Download or read book Effects of Urbanization on Brown Trout Salmo Trutta Other Fishes and Macroinvertebrates in Valley Creek Valley Forge Pennsylvania written by Stanley and James R. Spotila Kemp and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Communications

Download or read book Communications written by and published by . This book was released on 1994 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Urbanization on Fish Communities in Valley Creek Valley Forge PA

Download or read book Effects of Urbanization on Fish Communities in Valley Creek Valley Forge PA written by Stanley Joseph Kemp and published by . This book was released on 1994 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Brown Trout Population and Habitat Changes Associated with Increased Minimum Low Flows in Douglas Creek Wyoming

Download or read book Brown Trout Population and Habitat Changes Associated with Increased Minimum Low Flows in Douglas Creek Wyoming written by U.S. Fish and Wildlife Service and published by . This book was released on 1990 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Interactions Between Native and Nonnative Species

Download or read book Interactions Between Native and Nonnative Species written by Julie Kay Henry Zimmerman and published by . This book was released on 2005 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although previous research has investigated competition between native and nonnative trout, few studies have examined effects of introduced trout on other species in coldwater stream communities. I designed a field experiment to examine interactions between native brook trout versus nonnative brown trout with native slimy sculpin to investigate whether introductions of nonnative trout affect food web relationships in small streams. I hypothesized that brown trout would compete with sculpin and reduce sculpin growth, whereas competition would not occur between brook trout and sculpin, based on the premise that brook tout and slimy sculpin have coevolved in Minnesota streams. Enclosures (1m2) were stocked with fish according to six treatments: combined-species treatments (juvenile brown trout with sculpin, juvenile brook trout with sculpin), single-species controls, and no fish. Fish were stocked at three densities to examine intraspecific versus interspecific competition. Replicates of each treatment were placed in riffles in Valley Creek, Minnesota, and six 38-day experiment trials were conducted over three summers (2002-2004). Enclosures did not reduce abundance of drifting invertebrate prey. Interactions between brown trout and sculpin led to reduced growth of both large sculpin and large brown trout in enclosures, whereas presence of brook trout was not associated with changes to sculpin growth. Presence of brown trout also led to indirect effects on food web dynamics that may have resulted in these observed changes in growth. Brown trout was the only species associated with a decrease in abundance of a benthic invertebrate taxon, suggesting that brown trout may feed in the benthos to a greater extent than brook trout. Brown trout were also associated with shifts in sculpin diets, indicating a change in sculpin feeding behavior when sculpin were with brown trout that was not evident when sculpin were alone or with brook trout. Feeding behavior and intraspecific interactions among brown trout, along with shifts in feeding behavior of sculpin when brown trout were present, likely was a mechanism underlying reduced growth of both species. My research shows that introduced brown trout have effects on the stream community in Valley Creek that are different than native brook trout.

Book Migration in Brown Trout Salmo Trutta

Download or read book Migration in Brown Trout Salmo Trutta written by Jonas C. E. Pettersson and published by . This book was released on 2002 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Effects of Reservoir Fluctuations on Brown Trout Salmo Trutta L Spawning Success in Rush Creek Tributary to Grant Lake Mono County California

Download or read book The Effects of Reservoir Fluctuations on Brown Trout Salmo Trutta L Spawning Success in Rush Creek Tributary to Grant Lake Mono County California written by Donald Ward Sada and published by . This book was released on 1977 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Introduced Brown Trout Salmo Trutta on Habitat Use and Mortality Rates of Native Stream Fishes of Central Utah

Download or read book Effects of Introduced Brown Trout Salmo Trutta on Habitat Use and Mortality Rates of Native Stream Fishes of Central Utah written by Darren G. Olsen and published by . This book was released on 2000 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Urbanization Effects on Overwintering Brook and Brown Trout

Download or read book Urbanization Effects on Overwintering Brook and Brown Trout written by and published by . This book was released on 2013 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The combined impacts of urbanization and winter conditions on stream ecosystems and their fish communities is an important area of study that has previously been unaddressed. Urbanized streams commonly exhibit low fish richness and are susceptible to species and diversity loss. Additionally, winter is a period of increased mortality for stream fishes due to physiological and environmental changes. To increase winter survival, fish need sufficient energy reserves, access to good winter habitat, and a decreased likelihood for high risk activities. This study assessed the interactive effects of urbanization and wintertime on brook and brown trout condition and movement. Over the course of two winters, two urban and two rural streams in the Upper Peninsula of Michigan were compared for fish condition and movement using electrofishing and telemetry. Significantly higher mean fish condition was seen in the urban streams for both brook and brown trout, in several size classes, during both winters. Higher mean fish condition was also seen during winter 2 for both brook and brown trout, in most size classes. Mean percentage of recaptured fish that showed movement was not significantly different between the urban and rural streams or between winters. This study suggests stream temperature, water velocity, and fragmentation may explain higher fish condition in urban streams.

Book Effects of Anthropogenic Stream Alteration on Brown Trout Habitat Movement and Physiology

Download or read book Effects of Anthropogenic Stream Alteration on Brown Trout Habitat Movement and Physiology written by Tyler Jeffrey Ross and published by . This book was released on 2012 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anthropogenic stream alterations are caused by various factors, such as dams and water diversions that often change the flow, temperature and turbidity regimes of the aquatic ecosystems they occur in. Altered, unfavorable stream conditions are known to affect fishes at multiple levels of biological organization. These effects range from primary (e.g., blood cortisol concentrations) to secondary (e.g., serum chemistry) to tertiary levels (e.g., growth and condition) and can be manifested at any and all biological levels. Knowledge of fish responses to altered stream conditions at these levels of organization provides insight into population-level effects of anthropogenic alterations on brown trout Salmo trutta, which can be used to inform management decisions and mitigation actions. The response of brown trout to altered temperature, turbidity and flow regimes in upper Esopus Creek, New York were evaluated at multiple biological levels during summers 2010 and 2011. Secondary and tertiary-level effects were compared between trout in a stream segment receiving cold, turbid water releases from an aqueduct originating in a nearby reservoir and trout in a stream segment above the confluence of the aqueduct (i.e., unaffected by releases from the aqueduct). A fish health assessment was conducted to evaluate secondary and tertiary-level responses in summer 2010, and radio-telemetry, capture-recapture and intensive habitat surveys were used to evaluate additional tertiary-level responses in summer 2011. Results from summers 2010 and 2011 indicated that trout in all reaches of upper Esopus Creek were stressed at the secondary (i.e., serum chemistry) and tertiary-level (i.e., body condition, growth rates and movement rates), and that trout immediately downstream from the aqueduct were less stressed. In addition, summer 2011 habitat data indicated that greater amounts of habitat that was optimal for adult trout existed downstream from the aqueduct, and adults preferred these types of habitats. Stream conditions upstream from the aqueduct were warm and low-flow (i.e., stressful for trout), and the water was clear and not turbid during both summers. Conversely stream conditions immediately downstream from the aqueduct were turbid (i.e., stressful for trout), fastflowing and cold. Therefore, stream conditions throughout upper Esopus Creek during both summers were stressful for trout to some extent, and this was reflected in serum chemistry, body condition, movement and growth. Stream temperature is a dominant factor affecting fish growth and performance, which may explain why trout immediately downstream from the aqueduct were less stressed. Results from the present study have local and broad implications. They could be used locally to inform future management decisions of the water and fishery resources of upper Esopus Creek, as well as to educate the various stakeholder groups of the stream and its resources. They could be used broadly to inform management decisions and mitigation actions to benefit fishery resources in other aquatic ecosystems affected by humans (e.g., tailwater trout fisheries).

Book The Impacts of Brown Trout Salmo Trutta in Streams

Download or read book The Impacts of Brown Trout Salmo Trutta in Streams written by William F. Elvey and published by . This book was released on 2002 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: