Full scale tests of improved longline gear

A new type of bottom set longline was tested in trials during the cod fishery off Finnmark November-December 1984. This gear differed from traditional longloine, by being rigged with swivel-mounted monofilament gangions and a new hooktype. Compared with traditional gear, the new longline gave an improved catch rate of 72% (average)

Field studies on the abundance, growth and biofouling of the harvestable red alga Vertebrata lanosa (Linnaeus) T.A.Christensen

Macroalgae have an important ecological role as primary producers and habitat engineers for fauna in coastal areas, and many species can also be used for human consumption. Like vegetables, macroalgae contain essential vitamins and minerals, and red algae can also contain large amounts of protein. Vertebrata lanosa is a small red alga and an obligate epiphyte on seaweed. It grows almost exclusively on knotted wrack, Ascophyllum nodosum, which is commonly found in sheltered, upper intertidal habitats. With the exception of the Baltic sea and Greenland, V. lanosa is distributed along the coasts of the North Atlantic Ocean. The alga has lately received culinary attention in Scandinavia for its truffle-like taste and has been given the nickname “truffle of the sea”. This study has focused on distribution, growth and biofouling to gain valuable knowledge related to harvest of V. lanosa. 27 locations South of Bergen were included in an abundance study of both V. lanosa and its host A. nodosum, where physical factors as exposure, geographical orientation, temperature, salinity, inclination and vertical position in the tidal zone were assessed. V. lanosa was more abundant in areas of relatively high exposure and inclination and less abundant in more sheltered and flatter areas with large canopies of A. nodosum. This is likely due to increased physical impact on A. nodosum fronds at exposed sites which results in wounds and scratches. Damaged areas on the fronds of A. nodosum have higher settlement and survival of V. lanosa spores, likely due to favourable hydrodynamic conditions and limited epidermal shedding in wounded areas which increase the chance of rhizoid anchoring by V. lanosa. In total, 19 different epiphytic species were identified growing on V. lanosa, and the number and size of epiphytes were substantially higher in November than in February, suggesting that late winter and early spring is the best harvest time to ensure a clean product. For further studies, the growth of V. lanosa needs to be assessed in more detail and over longer time periods to gain knowledge on how to harvest the alga sustainably.Masteroppgave i biologiMAMN-BIOBIO39

Tagging of saithe (Pollachius virens L.) at a Norwegian fish farm : preliminary results on migration

Wild fish, particularly saithe (Pollachius virens L.) are commonly observed in the vicinity of fish farm sea cages on the Norwegian west coast and the fish are known to feed on excess salmon food pellets. To investigate residence time at the farm site and subsequent migration pattern, saithe were tagged and released once monthly during the period Nov 1990 to Nov 1991 at the sea cage facility of the Austevoll Marine Research Station, near Bergen, Norway. A total of 2607 saithe were tagged. Preliminary results from tag recoveries show that the saithe can stay in the vicinity of the farm cages for several months before offshore migration to the North Sea, Shetland, Faroe Islands and Iceland

Full scale fishing trials for tusk (Brosme brosme) and cod (Gadus morhua) with a collapsible fish trap

A collapsible fish trap with low weight and low stacking volume has been developed and tested in full scale fishing operations. The catch rates of tusk were promising, while the catches of cod were too low and variable to commercial fishing operation

The Discursive Governing of Elementary School Student Identity in Norwegian Educational Policy 2000–2015

Drawing on a study of five Norwegian white papers from the period 2003–2013, this article illuminates how student identity is discursively negotiated and constructed in educational policy documents in a period of transformation in Norwegian education. By employing discourse analysis using ‘the student’ as a nodal point, the white papers are analysed in four phases: (1) identify identity resources, (2) construct subject positions, (3) cluster subject positions into student identities, and (4) identify the discursive governing of student identities. Our analysis of the documents shows how the policy documents draw on traditional and well-known educational discourses, but also how a new discourse, ‘The discourse of compliance’, emerges in this period. In particular, the article discusses possible challenges and dilemmas that might arise, such as the challenge of ‘metonymic transfer’ and ‘the temporal dilemma’, when student identity is negotiated and constructed in the intersection of different educational ideologies and discourses. The article also elucidates how ‘The discourse of compliance’ is relevant for the development of the new Norwegian educational reform of 2020. Our findings are of interest for all actors within the educational context and underscore the importance of investigating student identity in policy research. The article also lays the groundwork for several suggested approaches for further research on the topic.publishedVersio