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 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
A new biotope map for the area including Troms III and the shelf edge to west Finnmark is now available on MAREANO's map service.read more
Much ice on the sea surface does not mean that the sea is cold. North of Svalbard we saw ice and melt water on the sea surface, while we measured seven degrees at 30 meters depth. During the first cruise in the project SI_Arctic, cod was the fish species caught the most places. Between the ice-free areas in the Fram Strait and the ice covered areas north of Svalbard there were clear differences in species and quantity of plankton, fish and marine mammals.read more
MAREANO's last biology-geology-pollution mapping cruise this season is finished, and once more we have had good weather in the Barents Sea. Thus, we have finished all cruise activities that were planned for this year, in addition to making a small start on next year's tasks.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.