By Øystein Aas, Anders Klemetsen, Sigurd Einum, Jostein Skurdal
The Atlantic salmon is without doubt one of the such a lot prized and exploited species around the world, being on the centre of a huge activities fishing and more and more because the significant farmed species in lots of international locations worldwide.Atlantic Salmon Ecology is a landmark booklet, either scientifically very important and visually beautiful. Comprehensively overlaying all significant points of the connection of the Atlantic salmon with its surroundings, chapters comprise info of migration and dispersal, copy, habitat requisites, feeding, development charges, pageant, predation, parasitsm, inhabitants dynamics, results of panorama use, hydro energy improvement, weather switch, and exploitation. The ebook closes with a precis and examine attainable destiny study directions.Backed by way of the Norwegian learn Council and with editors and members well known and revered, Atlantic Salmon Ecology is a necessary buy for all these operating with this species, together with fisheries scientists and bosses, fish biologists, ecologists, physiologists, environmental biologists and aquatic scientists, fish and natural world division group of workers and regulatory our bodies. Libraries in all universities and examine institutions the place those topics are studied and taught must have copies of this significant publication.Comprehensive and updated insurance of Atlantic SalmonAtlantic Salmon is without doubt one of the world's such a lot commercially very important speciesBacked via the Norwegian study CouncilExperienced editor and the world over revered members
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The number of resting periods may increase with migratory distance (Økland et al. 2001). In Aquatic Nomads: The Life and Migrations of the Atlantic Salmon 15 some UK rivers, where salmon may enter during any month of the year and therefore stay for longer periods in the river, resting periods may last many months, with fish leaving holding pools and migrating further upstream towards the spawning areas in the autumn (Hawkins 1989; Solomon et al. 1999). After the upstream migration, Atlantic salmon may have a residence period of one to several months with little or no movement until spawning (Thorstad et al.
Usually less than 3–6% of the mature wild salmon return to rivers other than the one they were hatched in (Stabell 1984; Jonsson et al. 2003). Precise homing may generate and maintain local adaptations through natural selection, and salmon populations in different rivers differ both ecologically and genetically (Taylor 1991; Verspoor et al. 2005; Garcia de Leaniz et al. 2007). Moreover, Atlantic salmon apparently return to the same area of the river where they spent their pre-smolt period, and ecological and genetic differences among subpopulations within rivers have been documented (Heggberget et al.
NETH. 6 Assumed geographical marine distribution of the Atlantic salmon in the North Atlantic Ocean and the associated countries that hold natural spawning populations of Atlantic salmon (given with names). Atlantic salmon occur in watersheds both along the east coast of North America and the west coast of Europe, and feed over large areas of the North Atlantic Ocean. ) 8 Atlantic Salmon Ecology Virtually all historical attempts to introduce anadromous populations of Atlantic salmon around the world have failed, indicating that the Atlantic salmon is a poor coloniser outside its native range compared to other salmonid species.