Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Ervik, Arne"

Viser treff 1-9 av 9

    • Case histories and new approaches to planning and modelling for Norwegian mariculture 

      Ervik, Arne; Hansen, Pia Kupka (ICES CM Documents;1994/F:26, Working paper, 1994)
      To promote a sustainable mariculture industry the environmental impact of the individual fish farm must be adjusted to the holding capacity of the site. The present regulation systems seems insufficient in achieving this. ...

    • Effects of organic waste from marine fish farms on the seabottom beneath the cages 

      Hansen, Pia Kupka; Ervik, Arne; Pittman, Karin (ICES CM Documents;1990/F:34, Working paper, 1990)
      Seven fish farms and a control station were investigated four times during one year. The farms represented a gradient of increasing accumulation of organic waste on the sea bottom. The thickness and the organic content ...

    • Environmental effects of marine Norwegian fish farms 

      Ervik, Arne; Johannessen, Per; Aure, Jan (ICES CM Documents;1985/F:37, Working paper, 1985)
      Sedimentation rates under fish farms may be very high, and high levels of fish stock may lead to harmful accumulation rates of the nutrient salt ammonia. The environmental effects of the organic load range from minor ...

    • LENKA - A nation-wide analysis of the suitability of the Norwegian coast and watercourses for aquaculture. A coastal zone management program 

      Pedersen, Tom N.; Aure, Jan; Berthelsen, Bjørn; Elvestad, Siri; Ervik, Arne; Kryvi, Håkon (ICES CM Documents;1988/F:11, Working paper, 1988)
      A coastal zone management program called LENKA was started in 1987 and is to be terminated in 1989. The aim is to make an efficient and standardized tool for coastal zone planning, which, pertaining to law, is the ...

    • Organic waste and antibiotics from aquaculture 

      Samuelsen, Ole Bent; Torsvik, Vigdis; Hansen, Pia Kupka; Pittman, Karin; Ervik, Arne (ICES CM Documents;1988/F:14, Working paper, 1988)
      During the past year three joint projects have been conducted concerning the fate of organic waste and antibiotics from various Norwegian fish farms. The projects are investigating the following topics: - decomposition ...

    • Pollution problems in Norwegian fish farming 

      Braaten, Bjørn; Aure, Jan; Ervik, Arne; Boge, Erik (ICES CM Documents;1983/F:26, Working paper, 1983)

    • Regulation of environmental effects of mariculture in Norway 

      Ervik, Arne; Hansen, Pia Kupka; Kryvi, Håkon (ICES CM Documents;1995/R:7, Working paper, 1995)
      The rapid development of the mariculture industry in Norway has caused pollution problems in the marine environment as well as conflicts with other users of the coastal zone. Research and practical experience have helped ...

    • Regulatory frameworks can support the development of aquaculture 

      Ervik, Arne (ICES CM Documents;2000/O:4, Working paper, 2000)
      Establishing new mariculture activities is difficuIt in many European countries. This is partly caused by lack of understanding of the actual environmental impact of the industry and lack of appropriate regulatory ...

    • Studies on environmental conditions and influence on salmon farm production 

      Ervik, Arne; Jørstad, Knut Eirik; Farestveit, Eva; Wennevik, Vidar; Eriksen, Anne Grete; Lerøy, Rita (ICES CM Documents;1990/F:35, Working paper, 1990)
      The study was undertaken to investigate how environmental conditions influence growth of Atlantic salmon, and how different sub groups of salmon respond to different environment. The fish were raised at five different ...