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This paper uses data series of returns & at-sea survivals of Atlantic salmon to monitored rivers in eastern Canada in order to address three issues: whether returns & survivals in 1997 were unusual; whether there were spatial and/or temporal correlations in the returns & sea survivals; and whether there are spatial patterns in the returns trends in the last decade. The trends in returns of small & large salmon provide a geographically segregated picture of abundance patterns for four geographic areas of eastern Canada: the Bay of Fundy & Atlantic coast of Nova Scotia; rivers in Quebec; southern Gulf of St. Lawrence; and insular Newfoundland rivers.
The Atlantic salmon is one of the most prized and exploited species worldwide, being at the centre of a massive sports fishing industry and increasingly as the major farmed species in many countries worldwide. Atlantic Salmon Ecology is a landmark publication, both scientifically important and visually attractive. Comprehensively covering all major aspects of the relationship of the Atlantic salmon with its environment, chapters include details of migration and dispersal, reproduction, habitat requirements, feeding, growth rates, competition, predation, parasitsm, population dynamics, effects of landscape use, hydro power development, climate change, and exploitation. The book closes with a summary and look at possible future research directions. Backed by the Norwegian Research Council and with editors and contributors widely known and respected, Atlantic Salmon Ecology is an essential purchase for all those working with this species, including fisheries scientists and managers, fish biologists, ecologists, physiologists, environmental biologists and aquatic scientists, fish and wildlife department personnel and regulatory bodies. Libraries in all universities and research establishments where these subjects are studied and taught should have copies of this important publication. Comprehensive and up-to-date coverage of Atlantic Salmon Atlantic Salmon is one of the world's most commercially important species Backed by the Norwegian Research Council Experienced editor and internationally respected contributors
This paper compiles data from the Big Salmon River stock collected since 1951 and uses the data to assess changes in Atlantic salmon population since that time. The maximum likelihood method is used to model the catch-effort, juvenile electrofishing, adult fence, stream-side, & dive counts and the redd count data to obtain estimates of the annual escapements & returns during the time period of interest. The results indicate a range of spawning run sizes and several estimates of the percent decline in the Big Salmon River Atlantic salmon population over the last 30 years.
The status of Atlantic salmon (Salmo salar) stocks of Newfoundland and Labrador was determined using information on annual returns to rivers and spawning escapements relative to conservation requirements, abundance of smolts and trends in marine survival. Overall, of 22 rivers in insular Newfoundland assessed relative to conservation requirements, 14 stocks met or exceeded their requirements, one river was at 65% of conservation, while 7 rivers were at 50% or less than their spawning requirements. Of the latter rivers, three were located in Bay St. George (SFA 13), while three others were enhanced stocks that have been, or are undergoing colonization programs. Some salmon populations continue to remain at low levels of abundance, while others that have experienced increased spawning escapements, have shown no enhanced adult production resulting from this increase in the number of spawners. Marine survival remains low. Limited information from Labrador indicated that while salmon runs were generally low overall, numbers increased over previous years as evidenced by returns to two counting facilities. Factors potentially contributing to low abundance of some stocks and overall poor marine survival are identified along with suggestions as to how some of the factors could be further investigated.
The Atlantic salmon is one of the most prized and exploited species worldwide, being at the centre of a massive sports fishing industry and increasingly as the major farmed species in many countries worldwide. Atlantic Salmon Ecology is a landmark publication, both scientifically important and visually attractive. Comprehensively covering all major aspects of the relationship of the Atlantic salmon with its environment, chapters include details of migration and dispersal, reproduction, habitat requirements, feeding, growth rates, competition, predation, parasitsm, population dynamics, effects of landscape use, hydro power development, climate change, and exploitation. The book closes with a summary and look at possible future research directions. Backed by the Norwegian Research Council and with editors and contributors widely known and respected, Atlantic Salmon Ecology is an essential purchase for all those working with this species, including fisheries scientists and managers, fish biologists, ecologists, physiologists, environmental biologists and aquatic scientists, fish and wildlife department personnel and regulatory bodies. Libraries in all universities and research establishments where these subjects are studied and taught should have copies of this important publication. Comprehensive and up-to-date coverage of Atlantic Salmon Atlantic Salmon is one of the world's most commercially important species Backed by the Norwegian Research Council Experienced editor and internationally respected contributors