News

The second MAREANO cruise in 2013 maps the seabed along the Russian border in the Barents Sea. Over large parts of the Barents Sea, the seabed is full of pockmarks. The processes that create pockmarks are important for both fauna and climate, and the ongoing MAREANO cruise will provide data that will contribute to resolving questions related to these.

Cruise diary: MAREANO often writes cruise-reports about all the beautiful and exciting things we observe with out video-rig. This is of course a very important part of the MAREANO-programme, and much of our cruise-time is allocated to filming our videolines. These data are the backbone in our descriptions of nature types, and they are the basis for our maps (e.g. maps of vulnerable nature types). But don’t believe that all we do on a cruise is to sit in the dark videoroom watching the sea-floor. We sample using quite a lot of other methods as well!

Cruise diary: June 19, after half of the planned stations at Skjoldryggen was covered (30 video locations of which seven were also bottom sampling stations), the first leg of the cruise ended in Kristiansund. We have seen small dead coral skeletons (coral rubble) at several locations when using the video-rig Campod. Then, we have most likely passed reefs in their outskirts.

Cruise diary: During the first leg of this summer’s first MAREANO cruise we have been sampling seabed sediments in the northern part of Skjoldryggen, on the mid-Norwegian margin. Skjoldryggen is a large terminal moraine deposited during the last glaciation, when the Scandinavian ice Sheet extended to the edge of the continental shelf. It is about 65 km long from north to south, up to 6 km wide and 100-150 m high.

Cruise Diary: MAREANO's first biology / geology / chemistry survey in 2013 started on Wednesday 12 June from Kristiansund, west of Norway. This time the research ship "Johan Hjort" is used.

As many as six vessels will participate in MAREANO surveys in 2013. Among other areas in the Norwegian Sea, the shelf edge is to be mapped down to depths of ca. 1.000 meters. In the Barents Sea, the Norwegian part of the previously disputed area along the Russian border will also be surveyed.

Apparently undisturbed by the light from the video rig, the little octopus "dances" in front of the camera at the Moskenes fishing ground off the Lofoten archipelago in northern Norway. It moves around in the water with small, almost transparent wings, while the rest of the animal has sharp colors. As most cephalopods, this species also has arms, ready to catch a passing prey.

MAREANO’s map service now includes an updated map showing the predicted distribution of biotopes across the Tromsøflaket-Eggakanten region.

As the focus of the MAREANO programme moves southwards to the mid-Norwegian continental shelf, there is a large area of seabed to be mapped.

The second leg of MAREANO’s spring cruise has now been south to the Mid-Norwegian shelf. One area 3900 square kilometre large between Kristiansund and Halten, and a second 2900 square kilometre on the northern part Storegga have been mapped by video.

Cruise report: During the 2012 MAREANO autumn cruise, scientists onboard RV ”G.O. Sars” discovered 15 new coral reefs off the coast of Trøndelag and Møre and Romsdal counties.

An expert group has for several years been working to identify new bristle worm (Polychaeta) species in the MAREANO seabed samples. Recently, the Norwegian Biodiversity Information Centre, allocated 2.6 million Norwegian kroner (ca. 350.000 €), enabling further research on this material.

Around 55 million years ago there was volcanic activity in the northeastern part of Mørebanken, offshore mid-Norway. Today we can find remains of this volcanism in the form of a steep sided column-like mountain rising from an otherwise fairly flat seabed, which now provides a home for a variety of fish and other bottom dwelling animals.

On this year’s autumn expedition, in addition to the usual mix of scientists and technicians, we had the pleasure of having two guests. They were the artist Pippip Ferner and the journalism student Silje Pileberg, who hoped to expand their horizons for the benefit of their own projects, while also shedding light on our research in ways that we would be unable to do.

Cruise report: The Sula Reef area in mid-Norway is known to contain numerous coral reefs, but less is known about coral reefs outside the designated protection area where trawling is prohibited. During transit between the Iverryggen and the Sula reef marine protected area (MPA), we used the opportunity to look for new and undiscovered coral reefs.

Cruise report: While using a video-rig to map the biodiversity of the sea-bottom, we often observe animal tracks crossing the seafloor. Such tracks can be holes, mounds or traces that are a result of the animals’ movement. This last week we have seen many such very decorative tracks on the seafloor in the area of Sunnmørsbankene at around 200 m depth, and the amount and density of the tracks bear witness of quite heavy “traffic” in some areas.

The vessel MS Hydrograf is currently acquiring bathymetry data as part of the MAREANO project. This is a short presentation of some bathymetric features recorded across the Sularevet reef, which has been surveyed this summer.

MAREANO has obtained access to existing bathymetric data acquired by other operators. The data are very valuable and will contribute to the progress of the programme.

The map service which shows seabed terrain has been updated with data from the Norwegian Sea.

In mid-September, R/V G.O. Sars embarked upon the 2012 MAREANO (Marine AREA database for Norwegian coastal and sea areas) fall survey. This year’s study area includes: coral reefs at Sula Reef outside South Trøndelag; several fishing areas along the route Kristiansund - Halten; and selected areas of the Møre Bank and Storegga North.

International workshop on methods and technology for seabed mapping – Trondheim 17th-18th October 2012.

Dozens of new polychaete species unknown to science have been detected in seabed samples collected by MAREANO in the Norwegian Sea during the last couple of years. In addition, scientists have been able to extend the known area of occurrence of a number of species. The findings contribute to an increased understanding of species diversity in the little-known and "invisible" animal world within the deep-water bottom sediments off the North-Norwegian coast.

As MAREANO extends into previously unmapped areas it is prudent to see if costs can be reduced by using alternative sources of bathymetry data, rather than full coverage multibeam data. A new report from the Geological Survey of Norway and the Institute for Marine Research tests out one possible source of alternative bathymetry data and evaluates the use of these data in future MAREANO work.

Three marine survey vessels are currently acquiring bathymetry data for the MAREANO project. Mapping has got off to a slow start because of strong winds and high seas, but we are hoping to make up some of the lost time.

The first MAREANO cruise this year has been successfully finished after a one month survey off Vesterålen/Nordland VI and off North-Trøndelag and Møre. The last 2-3 days were used for video filming in the northern part of the Storegga where both depth and fauna communities varied. In deep water the communities were affected by sub-zero temperatures and a thousands of years old underwater slide.

Cruise report: The second part of MAREANO's "spring cruise" is underway and is due to end in Tromsø 22 May after a 10-day cruise off the coast of Trøndelag, mid-Norway. After two days of investigations three unknown coral reefs have been found, of which one is probably a couple of hundred meters long.

Cruise report: MAREANO continues to accumulate many samples and a multitude of marine organisms. Many of these will be held in the Bergen University Museum and made available for researchers all over the world. The description and classification of organisms is a prime function of museum staff and such taxonomic research has brought us from the National Museum of Wales to the Norwegian Sea.

Cruise report: MAREANO's spring-cruise with R/V G.O. Sars has now been going on for about one week. The purpose of this first part of the cruise is to complete the mapping of habitats, benthic fauna and pollutants in the Nordland VI area off Lofoten, while in the second part video-filming will take place in the Storegga area and an area between Kristiansund and Halten.

Ida Bendixen Leinebø recently finished a master’s programme in environmental chemistry at the Department of Chemistry, University of Bergen. During the past two years, she has done her experimental master work at the Chemistry Laboratory at the Institute of Marine Research: analyses of radionuclides in sediment cores collected as part of the MAREANO programme.

So far, the MAREANO project has focused on areas off the counties of Nordland, Troms and Finnmark. This year, areas off Møre og Romsdal will also be surveyed. The aim is to produce biotope maps to assist with the revision of the management plan for the Norwegian Sea by September 2013.