Atlantic Salmon Ecology by Øystein Aas, Anders Klemetsen, Sigurd Einum, Jostein Skurdal

By Øystein Aas, Anders Klemetsen, Sigurd Einum, Jostein Skurdal

The Atlantic salmon is without doubt one of the so much prized and exploited species world wide, being on the centre of an enormous activities fishing and more and more because the significant farmed species in lots of nations worldwide.Atlantic Salmon Ecology is a landmark booklet, either scientifically vital and visually appealing. Comprehensively overlaying all significant points of the connection of the Atlantic salmon with its surroundings, chapters contain information of migration and dispersal, copy, habitat necessities, feeding, progress premiums, festival, predation, parasitsm, inhabitants dynamics, results of panorama use, hydro strength improvement, weather switch, and exploitation. The ebook closes with a precis and view attainable destiny learn directions.Backed through the Norwegian learn Council and with editors and members well known and revered, Atlantic Salmon Ecology is a vital 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 flora and fauna division body of workers and regulatory our bodies. Libraries in all universities and study institutions the place those matters are studied and taught must have copies of this crucial publication.Comprehensive and up to date insurance of Atlantic SalmonAtlantic Salmon is among the world's such a lot commercially very important speciesBacked by means of the Norwegian learn CouncilExperienced editor and across the world revered individuals

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2). In a typical Atlantic salmon population, juveniles will rear for a number of years Atlantic Salmon Ecology, First Edition, edited by Øystein Aas, Sigurd Einum, Anders Klemetsen and Jostein Skurdal © 2011 by Blackwell Publishing Ltd. 1 Humans have exploited fish during their migrations for several thousand years, and fish migrations have historically played an important role in the settlement of human populations (Lucas & Baras 2001). Today, many migrating species have a high economic value, including the Atlantic salmon.

2007), and the majority of individuals within a population may migrate within a relatively short period (1–2 weeks). Smolts often migrate downstream in groups or ‘shoals’ (Hvidsten et al. 1995; Riley 2007), and it has even been suggested that smolts may migrate in kin-structured groups (Olsen et al. 2004). Shoaling may confer an anti-predator advantage. Autumn smolt (sometimes termed pre-smolt) migrations are reported from both North American and European rivers (Riddell & Leggett 1981; Huntingford et al.

Such differences may Aquatic Nomads: The Life and Migrations of the Atlantic Salmon 11 affect migration timing and patterns of the hatchery-reared smolts, as well as their preparedness to survive in the wild (NRC 2004). The time and site of release also affect the homing abilities of the adult fish (Finstad & Jonsson 2001). 2 Marine post-smolt migration The migration of Atlantic salmon smolts through estuaries, from fresh water to the sea, is characterised by active swimming and is a continuous movement, usually with no apparent period of acclimation to adjust to saltwater osmotic and ionic conditions (Moore et al.

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