Blar i Articles på forfatter "Aure, Jan"
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Climatic variability in the Skagerrak and coastal waters of Norway
Albretsen, Jon; Aure, Jan; Sætre, Roald; Danielssen, Didrik S. (Journal article; Peer reviewed, 2011-12-18)The Institute of Marine Research in Norway collects marine data from all national waters. Data are primarily collected from vessels, but observation buoys, manual measurements, and oceanographic gliders are also used. The ... -
Coastal water darkening and implications for mesopelagic regime shifts in Norwegian fjords
Aksnes, Dag Lorents; Dupont, Nicolas; Staby, Arved; Fiksen, Øyvind; Kaartvedt, Stein; Aure, Jan (Journal article; Peer reviewed, 2009-07-28)The light regime of the water column has a strong structuring effect on aquatic food webs and it has been previously hypothesized that coastal water darkening has increased the success of tactile predators relative to ... -
Dispersion of salmon lice in the Hardangerfjord
Asplin, Lars; Johnsen, Ingrid A.; Sandvik, Anne Dagrun; Albretsen, Jon; Sundfjord, Vibeke; Aure, Jan; Boxaspen, Karin (Journal article; Peer reviewed, 2013-10-15)The abundance of salmon lice in the Hardangerfjord is potentially large enough to be a threat to the wild fish stocks of the fjord. The salmon louse spends a period of 2–4 weeks in its planktonic stages drifting in the ... -
Multi-decadal warming of Atlantic water and associated decline of dissolved oxygen in a deep fjord
Aksnes, Dag Lorents; Aure, Jan; Johansen, Per-Otto; Johnsen, Geir Helge; Salvanes, Anne Gro Vea (Journal article; Peer reviewed, 2019)Previous studies have shown decline in dissolved oxygen of the ocean basins. A hypothesis for this development is that ocean warming through increased stratification has caused reduced ventilation of the interior ocean. ... -
Oceanographic conditions in the Sandsfjord system, western Norway, after a bloom of toxic prymnesiophyte Prymnesium parvum Carter in August 1990
Aure, Jan; Rey, Francisco (Journal article; Peer reviewed, 1992-02-20)As in 1989 the algal bloom was toxic and mortal to Atlantic salmon and rainbow trout in fish-farms. The brachish layer, with salinities between 5 and 25 %o, was characterized by a high N : P ratio reflecting the low ... -
Primary production enhancement by artificial upwelling in a western Norwegian fjord
Aure, Jan; Strand, Øivind; Erga, Svein Rune; Strohmeier, Tore (Journal article; Peer reviewed, 2007-12-20)To enhance primary production rate for shellfish cultivation in fjords, a large-scale artificial upwelling experiment was carried out in a western Norwegian fjord during the summers of 2004 and 2005. Pumping 2 m3 s–1 ... -
Regional impact from fin-fish farming in an intensive production area (Hardangerfjord, Norway)
Husa, Vivian; Kutti, Tina; Ervik, Arne; Sjøtun, Kjersti; Hansen, Pia Kupka; Aure, Jan (Journal article; Peer reviewed, 2013-10-15)The Hardangerfjord is one of the largest salmon-farming areas in Norway, with an annual production of approximately 70,000 metric tonnes. The regional impact of fin-fish farming in a fjord environment was studied during ... -
Regional impact from fin-fish farming in an intensive production area (Hardangerfjord, Norway)
Husa, Vivian; Kutti, Tina; Ervik, Arne S; Sjøtun, Kjersti; Hansen, Pia Kupka; Aure, Jan (Peer reviewed; Journal article, 2014) -
Significance of advection for the carrying capacities of fjord populations
Aksnes, Dag Lorents; Aure, Jan; Kaartvedt, Stein; Magnesen, Thorolf; Richard, J. (Journal article; Peer reviewed, 1989-02-02)Advective rates of nutrients, phytoplankton and zooplankton were estimated for the Masfjord, western Norway, in June and October 1985. The advective contribution to the phytoplankton biomass formation was dearly less ... -
Temporal and spatial variation in food availability and meat ratio in a longline mussel farm (Mytilus edulis)
Strohmeier, Tore; Duinker, Arne; Strand, Øivind; Aure, Jan (Journal article; Peer reviewed, 2008-02-11)The influence of temporal and spatial variation in food availability on mussel meat ratio and biomass was studied in a longline mussel farm (100 m wide and 250 m long, Mytilus edulis) during an eight-month period. Current ... -
UV transmission in Norwegian marine waters: controlling factors and possible effects on primary production and vertical distribution of phytoplankton
Erga, Svein Rune; Aursland, Kjetil; Frette, Øyvind; Hamre, Børge; Lotsberg, Jon Kåre; Stamnes, Jakob J.; Aure, Jan; Rey, Francisco; Stamnes, Knut (Journal article; Peer reviewed, 2005-12-23)We investigated the ultraviolet radiation (UVR) transmission properties of Norwegian oceanic, coastal and fjord waters, and how they influence the primary production and vertical distribution of phytoplankton. Values of ...