Climate is commonly defined as the weather averaged over a period of time. The periode of time is ranging from months to years or even longer time scales. Climate encompasses the statistics of temperature, humidity and wind. Ocean climate consists of average environmental components occuring over a long periode of time. Temperature, salinity and current.read more
Sea lice are the most common parasite on farmed salmon, and the biggest health issue for the industry. For a number of years, oral and bath treatments have been used to combat sea lice. Our monitoring of sea lice shows that their numbers are increasing noticeably, and that in some cases they are developing resistance to the favoured treatment. Sea lice belong to the copepod family, and are found naturally throughout the northern hemisphere.read more
Mackerel is a pelagic and fast swimming fish species. It is distributed in the Northeast Atlantic from the Northwestern part of Africa north to the Barents Sea, and westwards in the Norwegian Sea to Iceland and Jan Mayen. Mackerel also enters the Baltic Sea, and furthermore exists in the Mediterranean Sea and Black Sea.read more
A new spatial information system helps managers; mussel and oyster farmers find the best locations for shellfish production in Normandy. The system is developed within the French-Norwegian project SISQUONOR. The key success factors are strong networks; common understanding and complementing knowledge between the two cooperating countries.read more
A new species of sideswimmers (amphipod) has been found on the continental slope off northern Norway. The new species is approximately 1 cm long, and appears to prefer water temperatures below 0 °C and depths of 1,000-2,600 metres. In total, 50 specimens of the new species were found.read more
A recent study has demonstrated that genetic changes giving the salmon louse partial resistance towards one of the most commonly used delousing chemicals in marine aquaculture (emamectin benzoate/Slice) have spread to salmon lice in the entire North Atlantic in a maximum of just 11 years.read more
Oslo/Arendal/Bergen, 13 November – The Norwegian Institute for Water Research (NIVA), GRID-Arendal and the Institute of Marine Research (IMR) have become the pioneering founders of a new Norwegian initiative to strengthen and share national competence on ‘blue forest’ habitats.read more
In focus: European lobster
The European lobster has been found from the Mediterranean Sea to Northern Norway and west to the Shetland Island and western Ireland. It is usually found in shallow waters less than 40 m deep, where it is night active and shelter in burrows during daytime.
Their preferred habitat is moderately exposed areas with a complex bottom substrate of a mixture of sand and rocks. The lobster has a wide diet, hunting live prey and scavenging on dead organisms.