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Habitat And Food Segregation Among Two Stream Dwelling Fishesjuvenile Atlantic Salmon Salmo Salar And Blacknose Dace Rhinichthys Atratulus
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Book Synopsis Habitat and Food Segregation Among Two Stream-dwelling Fishes,juvenile Atlantic Salmon (Salmo Salar) and Blacknose Dace (Rhinichthys Atratulus) by : Leanne R. Simpson
Download or read book Habitat and Food Segregation Among Two Stream-dwelling Fishes,juvenile Atlantic Salmon (Salmo Salar) and Blacknose Dace (Rhinichthys Atratulus) written by Leanne R. Simpson and published by . This book was released on 1995 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The American Midland Naturalist by :
Download or read book The American Midland Naturalist written by and published by . This book was released on 1995 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: A refereed, broad-spectrum journal publishing basic research in diverse disciplines in biology and varied taxa.
Book Synopsis Interactive Segregation Between Juvenile Atlantic Salmon (Salmo Salar) and Rainbow Trout (Salmo Gairdneri) in Experimental Stream Channels by : Walter Andrew Popp
Download or read book Interactive Segregation Between Juvenile Atlantic Salmon (Salmo Salar) and Rainbow Trout (Salmo Gairdneri) in Experimental Stream Channels written by Walter Andrew Popp and published by . This book was released on 1988 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Habitat Suitability Information by :
Download or read book Habitat Suitability Information written by and published by . This book was released on 1983 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Habitat Suitability Index Models by : Jon G. Stanley
Download or read book Habitat Suitability Index Models written by Jon G. Stanley and published by . This book was released on 1995 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Model was developed by evaluating individual suitability indices of 17 environmental variables that have been shown to afffect productivity or survival of nonmigratory freshwater life history stages of Atlantic salmon (Salmo salar L.).
Book Synopsis Age, Growth, and Mortality of Juvenile Atlantic Salmon in Streams by : Patrick W. Bley
Download or read book Age, Growth, and Mortality of Juvenile Atlantic Salmon in Streams written by Patrick W. Bley and published by . This book was released on 1987 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Habitat Requirements of Anadromous Salmonids by : D. W. Reiser
Download or read book Habitat Requirements of Anadromous Salmonids written by D. W. Reiser and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Testing Habitat Models for Blacknose Dace and Atlantic Salmon by : Joan Garner Trail
Download or read book Testing Habitat Models for Blacknose Dace and Atlantic Salmon written by Joan Garner Trail and published by . This book was released on 1989 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology of Atlantic Salmon and Brown Trout by : Bror Jonsson
Download or read book Ecology of Atlantic Salmon and Brown Trout written by Bror Jonsson and published by Springer. This book was released on 2011-05-06 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance. The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species.
Book Synopsis Habitat Variability and the Individual Variability of Juvenile Atlantic Salmon (Salmo Salar). by : Mathieu Roy
Download or read book Habitat Variability and the Individual Variability of Juvenile Atlantic Salmon (Salmo Salar). written by Mathieu Roy and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Habitat Suitability Index Models by : Jon G. Stanley
Download or read book Habitat Suitability Index Models written by Jon G. Stanley and published by . This book was released on 1995 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Habitat Suitability Index model was developed by evaluating individual suitability indices of 17 environmental variables that have been shown to affect productivity or survival of nonmigratory freshwater life history stages of Atlantic salmon (Salmo salar L.). These stages included egg, embryo, fry, and parr but not smolt. During summer base flows, the most suitable habitats had temperatures of 16-19 deg C, oxygen percent saturation exceeding 60%, and pH between 5.5 and 6.8. The most suitable current velocity was 1030 cm/s for fry and 10-40 cm/s for parr. The most suitable depth was 10-40 cm for fry and 20-50 cm for parr. The Habitat Suitability Index model is useful for evaluating stream habitat for production and survival of juvenile Atlantic salmon when these variables cannot practically be measured directly.
Book Synopsis Age, Growth and Mortality of Juvenile Atlantic Salmon in Streams by : Patrick W. Bley
Download or read book Age, Growth and Mortality of Juvenile Atlantic Salmon in Streams written by Patrick W. Bley and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reintroduction of Fish and Wildlife Populations by : David S. Jachowski
Download or read book Reintroduction of Fish and Wildlife Populations written by David S. Jachowski and published by Univ of California Press. This book was released on 2016-09-13 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reintroduction of Fish and Wildlife Populations provides a practical step-by-step guide to successfully planning, implementing, and evaluating the reestablishment of animal populations in former habitats or their introduction in new environments. In each chapter, experts in reintroduction biology outline a comprehensive synthesis of core concepts, issues, techniques, and perspectives. This manual and reference supports scientists and managers from fisheries and wildlife professions as they plan reintroductions, initiate releases of individuals, and manage restored populations over time. Covering a broad range of taxonomic groups, ecosystems, and global regions, this edited volume is an essential guide for academics, students, and professionals in natural resource management.
Book Synopsis Microhabitat Use by Juvenile Atlantic Salmon Sheltering During the Day in Summer by : Gabriel Gries
Download or read book Microhabitat Use by Juvenile Atlantic Salmon Sheltering During the Day in Summer written by Gabriel Gries and published by . This book was released on 1997 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Foraging and Growth in Relation to Habitat Use of Young-of-the-year Atlantic Salmon (Salmo Salar) by : Isabelle Girard
Download or read book Foraging and Growth in Relation to Habitat Use of Young-of-the-year Atlantic Salmon (Salmo Salar) written by Isabelle Girard and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using snorkeling observations, I examined the habitat use and preference of 216 individually tagged young-of-the-year Atlantic salmon in their first summer of life, using both a univariate and a multivariate approach. Habitat preference was determined by comparing the habitat used by fish to that available in the stream. The univariate analyses showed that salmon preferentially used a wide range of current velocity (6-48 cm·s -1) and water depth (20-39 cm) and a narrower range of cover (complete cover from aerial predators) and substrate (pebbles). However, a multivariate logistic regression approach showed that only water depth and current velocity were key variables in habitat selection. Indeed, habitat preference of salmon increased with current velocity and water depth and then decreased at water depths above 30 cm. Drift rate within the stream was surveyed in order to predict food abundance for each fish in the study site. Correlates of fitness (i.e. foraging rate and growth rate) were also measured to relate individual fitness of each fish to their habitat choice. The results showed that y-o-y Atlantic salmon did not grow at a faster rate in the preferred habitats, despite the increase in food abundance and a higher foraging rate. I suggest that young-of-the-year salmon can grow reasonably well in a variety of habitat types and that the ideal free distribution may be a better description of their habitat use than the ideal despotic distribution.
Book Synopsis Habitat Use and Selection by Juvenile Atlantic Salmon in Two National Forest Streams in Vermont and New Hampshire by : Daniel B. McKinley
Download or read book Habitat Use and Selection by Juvenile Atlantic Salmon in Two National Forest Streams in Vermont and New Hampshire written by Daniel B. McKinley and published by . This book was released on 1992 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dispersal and Density-dependent Growth of Early Juvenile Atlantic Salmon (Salmo Salar) by : Eric Brunsdon
Download or read book Dispersal and Density-dependent Growth of Early Juvenile Atlantic Salmon (Salmo Salar) written by Eric Brunsdon and published by . This book was released on 2015 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dispersal from nesting sites and habitat selection are essential for the fitness of young individuals and shapes the distribution, growth and persistence of populations. These processes are important to consider when releasing captive bred young individuals into the wild to restore extirpated or depleted populations. However, few studies have evaluated how manipulating densities during release affects the dispersal and growth of individuals with respect to crucial life history traits. I manipulated the density of young-of-the-year (YOY) Atlantic salmon to evaluate the effect of two stocking techniques on the life history characteristics of surviving fish. Salmon were either point-stocked (all fish released in a small area at the upstream end of a reach) or spread-stocked (fish were released evenly over the entire reach) in 14 reaches of the Boquet River, New York. I used snorkeling and electrofishing surveys to characterize the density, dispersal, growth and survival of salmon stocked via each technique. Density decreased and growth rate increased with distance downstream in point-stocking reaches, whereas density and growth were relatively constant within spread-stocking reaches. Overall, density, growth and survival did not differ between the two stocking techniques due to the greater-than-expected degree of dispersal observed in point-stocking reaches. YOY dispersed up to 1600m, with 41% moving over 200m downstream. Growth rate of individual fish was density-dependent, following the negative power curve observed in previous studies. My results provide insights into how the growth and survival of released individuals are altered via stocking techniques, ultimately shaping their distribution and persistence.
