Viser treff 2895-2914 av 5064

    • M. Speight and P. Henderson : book review : Marine ecology : concepts and applications. 

      Jobling, Malcolm (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
    • Machine learning and the identification of Smart Specialisation thematic networks in Arctic Scandinavia 

      Moilanen, Mikko; Østbye, Stein; Jaakko, Simonen (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-16)
      The European Union (EU) has recognized that universities and research institutes play a critical role in regional Smart Specialisation processes. Our research aims to identify thematic cross-border research domains across space and disciplines in Arctic Scandinavia. We identify potential domains using an unsupervised machine-learning technique (topic modelling). We uncover latent topics based on ...
    • Machine learning for classification of an eroding scarp surface using terrestrial photogrammetry with nir and rgb imagery 

      Bernsteiner, H.; Brozova, N.; Eischeid, Isabell; Hamer, A.; Haselberger, S.; Huber, M.; Kollert, A.; Vandyk, T. M.; Pirotti, F. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-03)
      Increasingly advanced and affordable close-range sensing techniques are employed by an ever-broadening range of users, with varying competence and experience. In this context a method was tested that uses photogrammetry and classification by machine learning to divide a point cloud into different surface type classes. The study site is a peat scarp 20 metres long in the actively eroding river bank ...
    • Mackerel processing in north east coast of Iceland. Social-, economic- and adaptability analysis of the municipality of Vopnafjörður 

      Arnarsson, Sigmar (Master thesis; Mastergradsoppgave, 2013-11-17)
      Vopnafjörður is a small fisheries dependent community on the North East coast of Iceland. The community has experienced fluctuations in the fishing industry over the recent years and had to adapt. After some years of struggle, the local company Tangi was merged into a larger company, HB Grandi. The merger was a success and fish processing in the community is stable. In the recent years mackerel has ...
    • Macroalgae contribute to nested mosaics of pH variability in a subarctic fjord 

      Krause-Jensen, Dorte; Duarte, Carlos M.; Hendriks, Iris E.; Meire, L; Blicher, M.E.; Marba, Nuria; Sejr, Mikael K (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-19)
      The Arctic Ocean is considered the most vulnerable ecosystem to ocean acidification, and large-scale assessments of pH and the saturation state for aragonite (Ωarag) have led to the notion that the Arctic Ocean is already close to a corrosive state. In high-latitude coastal waters the regulation of pH and Ωarag is, however, far more complex than offshore because increased biological activity and ...
    • Macroalgal detritus and food-web subsidies along an Arctic fjord depth-gradient 

      Renaud, Paul; Løkken, Therese Smelnor; Jørgensen, Lis Lindal; Berge, Jørgen; Johnson, Beverly J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-05)
      Tight coupling between pelagic and benthic communities is accepted as a general principle on Arctic shelves. Whereas this paradigm has been useful for guiding ecological research, it has perhaps led to a disproportionate focus on POM and ice algae as the most likely sources of carbon for the benthic food web. Arctic shelves are complex systems, including banks, fjords, and trough systems up to 350 ...
    • Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach 

      Oleszczuk, Barbara; Silberberger, Marc Jürgen; Grzelak, Katarzyna; Winogradow, Aleksandra; Dybwad, Christine Schumann; Peeken, Ilka; Wiedmann, Ingrid; Kędra, Monika (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-13)
      The knowledge on benthic trophic relations is particularly important for understanding the functioning of still pristine and less studied Arctic Ocean ecosystems. This study examines the benthic food-web structure in the European sector of the Arctic Ocean and assesses if and how it differs along depth gradients in the marginal seaice zone during spring. Samples of the sediment organic matter were ...
    • Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands 

      Cotté, C.; Ariza, A.; Berne, A.; Habasque, J.; Lebourges-Dhaussy, A.; Roudaut, G.; Espinasse, Boris Dristan; Hunt, B.P.V.; Pakhomov, E.A.; Henschke, N.; Péron, C.; Conchon, A.; Koedooder, C.; Izard, L.; Cherel, Y. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-13)
      Mesopelagic communities are characterized by a large biomass of diverse macrozooplankton and micronekton (MM) performing diel vertical migration (DVM) connecting the surface to the deeper ocean and contributing to biogeochemical fluxes. In the Southern Ocean, a prominent High Nutrient Low Chlorophyll (HNLC) and low carbon export region, the contribution of MM to the vertical carbon flux of the ...
    • Main factors in choice of delivery terms. A multiple case study of Japanese and Russian importers in seafood trade with Norway. 

      Shangina, Olga Alexandrovna (Master thesis; Mastergradsoppgave, 2007-05-23)
      Export–import relationships are very complex and are regulated by different legal instruments. Incoterms 2000 is one of the most important issues in the international seafood trade. Its use varies depending on business environments, countries and companies involved. The most common factors affecting the choice of delivery terms from Incoterms 2000 are volume/value of the consignment, control over ...
    • Main risk factors associated with small and large ruminant brucellosis 

      Dadar, Maryam; Godfroid, Jacques Xavier Leon (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-22)
      Brucellosis is a neglected zoonotic bacterial disease in most of the developing world that has a significant impact on public health. The prevalence of brucellosis in livestock, particularly in large and small ruminants is variable in many countries and seems to remain high, especially amongst subsistence and small-scale livestock farmers. There are different factors that may influence the prevalence ...
    • The major threats to Atlantic salmon in Norway 

      Forseth, Torbjørn; Barlaup, Bjørn Torgeir; Finstad, Bengt; Fiske, Peder; Gjøsæter, Harald; Falkegård, Morten; Hindar, Atle; Mo, Tor Atle; Rikardsen, Audun H.; Thorstad, Eva Bonsak; Vøllestad, Leif Asbjørn; Wennevik, Vidar (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-03)
      Atlantic salmon (Salmo salar) is an economically and culturally important species. Norway has more than 400 watercourses with Atlantic salmon and supports a large proportion of the world’s wild Atlantic salmon. Atlantic salmon are structured into numerous genetically differentiated populations, and are therefore managed at the population level. Long-distance migrations between freshwater and ocean ...
    • Make it simpler and better: T90 codend improves size selectivity and catch efficiency compared with the grid-and-diamond mesh codend in the Northeast Atlantic bottom trawl fishery for gadoids 

      Brinkhof, Jesse; Larsen, Roger B.; Herrmann, Bent (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-08)
      The use of a sorting grid followed by a size-selective codend with minimum 130 mm mesh size is compulsory in the Northeast Atlantic demersal trawl fishery targeting cod (Gadus morhua), haddock (Melanogrammus aeglefinus), and saithe (Polachius virens). However, sorting grids cause some disadvantages, which possibly can be solved by removing the grid and improving codend selectivity, thus making the ...
    • Making ecosystem-based management operational: Integrated monitoring in Norway 

      Knol, Maaike (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Ecosystem-based management presupposes that the state and development trends of an ecosystem - or of ecological quality - can be measured and followed. Currently, in many coastal countries there exists a variety of monitoring practices that are concerned with single issues only, and are not an integrated part of a larger framework. With the trend towards more comprehensive forms of ecosystem-based ...
    • Making Sami Seascapes Matter : ethno-ecological governance in coastal Norway 

      Brattland, Camilla (Doctoral thesis; Doktorgradsavhandling, 2012-06-22)
      This thesis addresses the lack of knowledge production on impacts of new marine industries on coastal Sami culture in the Norwegian coastal zone. It asks how Sami culture matters in contemporary Norwegian marine governance, and discusses how ecosystem mapping practices facilitate knowledge production on Sami relations and use of the marine environment. This is done through five papers and a film, ...
    • Making the Arctic predictable: The changing information infrastructure of Arctic weather and sea ice services 

      Knol, Maaike; Arbo, Peter; Duske, Paula; Gerland, Sebastian; Lamers, Machiel; Pavlova, Olga; Sivle, Anders Doksæter; Tronstad, Stein (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-19)
      This paper explores the changing infrastructure around weather and sea ice information provisioning for Arctic marine areas. Traditionally, the most important providers of operational information on sea ice and weather conditions are the national sea ice and meteorological services. More recently, the community of Arctic information providers has become more heterogeneous with the establishment of ...
    • Makroalgesamfunn i littoralsonen på fem lokaliteter i Troms - endringer langs en enksponeringsgradient og endringer de siste 25 år 

      Nervold, Gunhild Garte (Master thesis; Mastergradsoppgave, 2008-06-05)
      Formålet med denne oppgaven var å se på kvantitative endringer av makroalge- og lavsamfunnet i littoralsonen på fem lokaliteter i Troms, langs en eksponeringsgradient fra fjord til kyst. Ofte finner man samfunnsendringer innover i fjordene som er nært korrelert med forandringer i substratets stabilitet, tekstur og lokaltopografiske forhold i fjæra (helning) (pers. med. Tor Eiliv Lein). Artsdiversiteten ...
    • Management and livelihood opportunity of Lake Tana fishery, Ethiopia 

      Chekol, Aytegeb Anteneh (Master thesis; Mastergradsoppgave, 2013-12-16)
      Agriculture plays vital role in Ethiopian economy. However, despite its importance and potential, the sector has remained at subsistence level. Animal protein is the most deficient nutrient in human diet. One of the traditional sources of animal protein of the developing world is through livestock rearing. Unfortunately, the livestock production is under increasing pressure from the combined effects ...
    • Management decisions and knowledge gaps: Learning by doing in a case of a declining population of slavonian grebe Podiceps auritus 

      Stien, Jenny; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-01)
      Species of national conservation concern require management action to reduce the threat of extinction. As part of its obligations to reduce national loss of biodiversity, the Norwegian authority for nature management (Th e Norwegian Environment Agency) published an action plan in 2010 for one of these species, the Slavonian grebe Podiceps auritus . Th e American mink Neovison vison , a non-native, ...
    • Management of Lake Ziway fisheries in Ethiopia 

      Yohannes, Felegeselam (Master thesis; Mastergradsoppgave, 2003-06-02)
      This study has been conducted in the northern most Rift Valley lake fishery – lake Ziway. Catch & effort and economic data have been used to analyze its fishery. The aim of the analysis was to review the present management situation of the lake and to apply bioeconomic theory to estimate the maximum and economic yields of the lake. The Schaefer’s surplus production model has been employed to ...