Download or read book Biological Characteristics of Atlantic Salmon Salmo Salar L in the Nepisiguit River New Brunswick 1982 96 written by and published by . This book was released on 1998 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a study of the fork length, sex, and age of adult Atlantic salmon returning to the Nepisiguit River, New Brunswick. The study was conducted to determine whether those biological characteristics varied between fish of known hatchery origin (marked by a clipped fin) and presumed wild fish. Trends over time between 1982 and 1996 were also examined. Comparison is also made between the characteristics of Nepisiguit River salmon with those of the Miramichi and Restigouche rivers.
Download or read book Biological Characteristics of Atlantic Salmon Salmo Salar L in the Nepisiguit River New Brunswick 1982 1996 written by F. K. Mowbray and published by . This book was released on 1998 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of Atlantic Salmon and Brown Trout written by Bror Jonsson and published by Springer Science & Business Media. This book was released on 2011-05-03 with total page 720 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.
Download or read book Ecohydrology Hydrobiology written by and published by . This book was released on 2003 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The international journal Ecohydrology & Hydrobiology (E&H) has been created to promote the concept of Ecohydrology, which is defined as the study of the functional interrelations between hydrology and biota at the catchment scale. Ecohydrology extends from the molecular level to catchment-scale processes and is based on three principles: • framework (hydrological principle) - quantification and integration of hydrological and ecological processes at a basin scale; • target (ecological principle) - necessity of enhancing ecosystem absorbing capacity and ecosystem services; and • management tool (ecological engineering) – the use of ecosystem properties for regulation the interplay between hydrology and biota. The journal encourages the submission of manuscripts which adopt an integrative approach to aquatic sciences, explaining ecological and hydrological processes at a river-basin scale or propose practical applications of this knowledge. It will also consider papers in other hydrobiological fields. Especially welcome are papers on regulatory mechanism within biocenosis and the resistance and resilience of freshwater and costal zones ecosystems. There is no page charge for published papers. All submitted papers, written exclusively in English, should be original works, unpublished and not under consideration for publication elsewhere. All papers are peer-reviewed. The following types of papers are considered for publication in E&H: • original research papers • invited or submitted review papers, • short communications
Download or read book Biological Characteristics and Population Dynamics of Atlantic Salmon Salmo Salar from the Miramichi River New Brunswick Canada written by Gérald J. Chaput and published by . This book was released on 2016 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of Atlantic Salmon Salmo Salar in the Buctouche River New Brunswick 1992 to 2000 written by Gary Atkinson and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 1998-12 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of Adult Atlantic Salmon Salmo Salar in the Buctouche River New Brunswick 1992 2001 written by Atkinson, Gary and published by Moncton, N.B. : Fisheries and Oceans. This book was released on 2001 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of Atlantic Salmon Salmo Salar L in the Upper Lehave River Basin written by Canada. Department of Fisheries and Oceans and published by . This book was released on 1985 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of Atlantic Salmon Salmo Salar L in the Upper LaHave River Basin written by Canada. Department of Fisheries and Oceans. Scotia-Fundy Region. Freshwater and Anadromous Division and published by Halifax, N.S. : Fisheries and Oceans, Canada. This book was released on 1986 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of Adult Atlantic Salmon Salmo Salar L from the Margaree River Nova Scotia 1987 to 1996 written by Paul H. LeBlanc and published by . This book was released on 2005 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics and Population Dynamics of Atlantic Salmon Salmo Salar from the Miramichi River New Brunswick Canada written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emphasis is placed on characteristics of salmon from the Northwest Miramichi in support of a review of the risks to long-term fitness of wild Atlantic salmon of a proposed supplementation program consisting of the captive-rearing in freshwater of wild salmon smolts to the adult stage and release back to the river to spawn. [...] Freshwater dynamics of Atlantic salmon are examined to assist in the evaluation of the risks and /or benefits of the proposed supplementation activity in achieving one of the stated goals which is to increase abundance of adult Atlantic salmon to the river. [...] Emphasis is placed on characteristics of salmon from the Northwest Miramichi in support of a review of the risks to long-term fitness of wild Atlantic salmon of a proposed supplementation program consisting of the captive-rearing in freshwater of wild salmon smolts to the adult stage and release back to the river to spawn (DFO 2016). [...] The two main branches of the Miramichi River are each comprised of two main rivers which join near the head of tide; the Renous and Southwest Miramichi rivers join at the head of tide in the Southwest Branch of the Miramichi, the Little Southwest and Northwest Miramichi rivers join at the head of tide in the Northwest branch of the Miramichi (Fig. [...] There was no statistically significant association between the proportion of the early tagged salmon which ascended to the facilities prior to September 1 and neither the elevation nor the distance of the facility from the head of tide (Fig.
Download or read book Evolutionary Biology of the Atlantic Salmon written by Tomislav Vladić and published by CRC Press. This book was released on 2015-08-10 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic salmon (Salmo salar, L) is an anadromous species contributing to major fishery catches and comprising a significant part of the aquaculturally produced fish for human consumption. The aim of this book is to incite the interest in the field of knowledge gathered from a broad scope of disciplines that have investigated this fish species. Und
Download or read book Migrations Biological Characteristics of Atlantic Salmon Salmo Salar Smolts from the Northwest Miramichi River 1998 to 2000 written by P. Hardie and published by . This book was released on 2002 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Proceedings of the International Workshop Entitled Integrating Across Scales Predicting Patterns of Change in Atlantic Salmon written by Martha Ellen Mather and published by . This book was released on 1998 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status of Atlantic Salmon in the Nepisiguit River New Brunswick in 1982 1993 written by A. Locke and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relative Abundance of Farmed Atlantic Salmon Salmo Salar L 1758 Juveniles in Wild Samples from Three Southwestern New Brunswick Rivers written by Michael J. W. Stokesbury and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A procedure of classification using a discriminant function analysis was developed to determine the farmed or native natal origin of Atlantic salmon juveniles in the Magaguadavic River, New Brunswick. Farmed juveniles enter this river as escapees from three commercial aquaculture hatcheries. The procedure evaluated measured scale characteristics from the first year of growth, of farmed and native juveniles of known origin, for their power as predictors of derivation. Eight scale characteristics proved to be significant predictors of origin. In a jackknife cross-validation, the function developed from the characteristics proved to be 90.3% accurate in predicting the origin of juvenile Atlantic salmon in the Magaguadavic River. The procedure was then applied to unknown origin juveniles sampled from the Magaguadavic, Waweig and Digdequash rivers in New Brunswick. All of these rivers support hatcheries. Juvenile salmon sampled in the Magaguadavic River in 1996, 1997 and 1998, were determined to be 34%, 63% and 42% of farmed origin, respectively. During 1998, 9% of the juveniles from the Digdequash River were of farmed origin, and 42% of the juveniles in the Waweig River were of farmed origin. The study indicated that substantial numbers of farmed juveniles escaped from hatcheries and occupied juvenile salmon habitat in all three rivers.
