Browsing NTNU Open by Author "Handå, Aleksander"
Now showing items 1-18 of 18
-
A new Norwegian bioeconomy based on cultivation and processing of seaweeds: Opportunities and R&D needs
Skjermo, Jorunn; Aasen, Inga Marie; Arff, Johanne; Broch, Ole Jacob; Carvajal, Ana Karina; Christie, Hartvig C; Forbord, Silje; Olsen, Yngvar; Reitan, Kjell Inge; Rustad, Turid; Sandquist, Judit; Solbakken, Roar; Steinhovden, Kristine; Wittgens, Bernd; Wolff, Robert; Handå, Aleksander (Research report, 2014) -
Automation Concepts for Industrial-Scale Production of Seaweed
Solvang, Torfinn; Bale, Emil Scott; Broch, Ole Jacob; Handå, Aleksander; Alver, Morten (Peer reviewed; Journal article, 2021)In order to industrialize macroalgal cultivation in Norway, new automated methods and solutions for seeding, deployment and harvesting need to be developed. Today's solutions are time and resource demanding, still yielding ... -
Chemical composition and release rate of waste discharge from an Atlantic salmon farm with an evaluation of IMTA feasibility
Wang, Xinxin; Andresen, Kjersti; Handå, Aleksander; Jensen, Bjørn; Reitan, Kjell Inge; Olsen, Yngvar (Journal article; Peer reviewed, 2013)The carbon (C), nitrogen (N) and phosphorus (P) compositions of salmon feed, fish and faeces were studied at a salmon farm in Badstuvika (63°31’N, 9°9’E) in central Norway. These data were used to estimate the release rates ... -
Cultivation of mussels (Mytilus edulis) : Feed requirements, Storage and Integration with Salmon (Salmo salar) farming
Handå, Aleksander (Doktoravhandlinger ved NTNU, 1503-8181; 2012:108, Doctoral thesis, 2012)Norwegian salmon production doubled from 0.43 million tons in 1999 to 0.86 million tons in 2009, with further growth expected. A considerable amount of the feed used is released into the surrounding waters as respiratory ... -
Effect of seeding methods and hatchery period on sea cultivation of Saccharina latissima (Phaeophyceae): a Norwegian case-study
Forbord, Silje; Steinhovden, Kristine; Solvang, Torfinn; Handå, Aleksander; Skjermo, Jorunn (Journal article; Peer reviewed, 2019)To reach the goal of an industrialised macroalgae industry in Norway and other high-cost countries in the near future, a standardised seedling production method to improve quality control and predictability of cultivated ... -
Effect of seeding methods and hatchery periods on sea cultivation of Saccharina latissima (Phaeophyceae): a Norwegian case study
Forbord, Silje; Steinhovden, Kristine; Solvang, Torfinn; Handå, Aleksander; Skjermo, Jorunn (Peer reviewed; Journal article, 2020)To reach the goal of an industrialised macroalgae industry in Norway and other high-cost countries in the near future, a standardised seedling production method to improve quality control and predictability of cultivated ... -
Growth and nutritional composition of the polychaete Hediste diversicolor (OF Müller, 1776) cultivated on waste from land-based salmon smolt aquaculture
Wang, Haiqing; Seekamp, Inka; Malzahn, Arne; Hagemann, Andreas; Carvajal, Ana Karina; Slizyte, Rasa; Standal, Inger Beate; Handå, Aleksander; Reitan, Kjell Inge (Journal article; Peer reviewed, 2019)Increased aquaculture production will result in increased amounts of waste produced, and these wastes are highly underexploited. Polychaetes might effectively consume such waste and transfer them into compounds as marine ... -
Incorporation of feed and fecal waste from salmon aquaculture in great scallops (Pecten Maximus) co-fed by different algal concentrations
Bergvik, Maria; Stensås, Lene; Handå, Aleksander; Reitan, Kjell Inge; Strand, Øivind; Olsen, Yngvar (Journal article; Peer reviewed, 2019)Juvenile scallops of Pecten maxiumus were studied to see the capability to clear out and incorporate salmon feed and feces (30 µg L-1). Algae were also given, in a low and high concentration in addition to feed and faeces, ... -
Latitudinal, seasonal and depth-dependent variation in growth, chemical composition and biofouling of cultivated Saccharina latissima (Phaeophyceae) along the Norwegian coast
Forbord, Silje; Matsson, Sanna; Brodahl, Guri Ellila; Bluhm, Bodil; Broch, Ole Jacob; Handå, Aleksander; Metaxas, Anna; Skjermo, Jorunn; Steinhovden, Kristine; Olsen, Yngvar (Journal article; Peer reviewed, 2020)The Norwegian coastline covers more than 10° in latitude and provides a range in abiotic and biotic conditions for seaweed farming. In this study, we compared the effects of cultivation depth and season on the increase in ... -
MacroBiomass En kompetansebase for industriell taredyrking
Forbord, Silje; Handå, Aleksander; Broch, Ole Jacob; Arff, Johanne; Dahle, Stine Veronica Wiborg; Fredriksen, Stein; Reitan, Kjell Inge; Steinhovden, Kristine; Størseth, Trond Røvik; Tangen, Karl; Lüning, Klaus (Research report, 2013)MacroBiomass Prosjektet MacroBiomass har hatt som mål å bygge en kompetansebase med fokus på biologiske utfordringer i storskala dyrking av makroalger (tare) til bioenergi. Prosjektet har jobbet med hele produksjonssyklusen ... -
Miljøkonsekvensanalyse: Integrert havbruk i Norge. September 2017
Karlsson-Drangsholt, Anders; van Nes, Solveig; Fieler, Reinhold; Hansen, Pia Kupka; Chapman, Annelise Sabine; Stévant, Pierrick Francois Denis; Rebours, Celine; Siikavuopio, Sten Ivar; Mortensen, Atle; Robertsen, Roy; Reitan, Kjell Inge; Øie, Gunvor; Handå, Aleksander; Hognes, Erik Skontorp; Rånes, Stein Arne; Tørud, Brit; Lillehaug, Atle (Research report, 2017)Det er fortsatt knyttet stor grad av usikkerhet til noen av miljøeffektene ved IMTA sammenlignet med konvensjonell fiskeoppdrett. Mye av dette er knyttet til mangel på kunnskap fra reelle anlegg i kommersiell skala, siden ... -
Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway
Broch, Ole Jacob; Ellingsen, Ingrid H.; Forbord, Silje; Wang, Xinxin; Volent, Zsolt; Alver, Morten; Handå, Aleksander; Andresen, Kjersti; Slagstad, Dag; Reitan, Kjell Inge; Olsen, Yngvar; Skjermo, Jorunn (Journal article; Peer reviewed, 2013)A 3-dimensional hydrodynamic−ecological model system (SINMOD) was used to estimate the full-scale cultivation potential of the brown alga Saccharina latissima in integrated multi-trophic aquaculture (IMTA) with Atlantic ... -
Potential of the polychaete Hediste diversicolor fed on aquaculture and biogas side streams as an aquaculture food source
Wang, Haiqing; Hagemann, Andreas; Reitan, Kjell Inge; Ejlertson, Jørgen; Wollan, Håvard; Handå, Aleksander; malzahn, Arne (Journal article; Peer reviewed, 2019)We evaluated the potential of the marine bristleworm Hediste diversicolor (Polychaeta) to recycle side streams from aquaculture and biogas production. Polychaetes were fed along a gradient from pure aquaculture sludge (SS) ... -
The role of manipulating photoperiod and temperature in oocyte development of the polychaete hediste diversicolor (O.F. Müller, 1976)
Wang, Haiqing; Hagemann, Andreas; Malzahn, Arne; Handå, Aleksander; Uhre, Marianne; Kjørsvik, Elin; Reitan, Kjell Inge (Peer reviewed; Journal article, 2020)Three different experiments were conducted to examine the oocyte development of the polychaete Hediste diversicolor in response to changing photoperiod and temperature at three different periods of oogenesis. In experiment ... -
Seasonal changes in growth and composition of the kelp Saccharina latissima cultivated in salmon-driven IMTA
Fossberg, Julia Leivestad (Master thesis, 2014)The primary objective of this Master s thesis was to study the growth and biochemical composition of Saccharina latissima in salmon-driven IMTA. The differences in the seasonal changes in growth and composition between ... -
The Potential for Upscaling Kelp(Saccharina latissima) Cultivation in Salmon-Driven Integrated Multi-Trophic Aquaculture (IMTA)
Fossberg, Julia; Forbord, Silje; Broch, Ole Jacob; Malzahn, Arne; Jansen, Henrice M; Handå, Aleksander; Førde, Henny; Bergvik, Maria; Fleddum, Anne Lise; Skjermo, Jorunn; Olsen, Yngvar (Journal article; Peer reviewed, 2018)Integrated multi-trophic aquaculture (IMTA) has the potential of reducing open-cage fish farming impacts on the environment while also introducing new value chains. The aim of this study was to investigate the growth and ... -
Tilrettelegging for dyrking av butare i Trøndelag.
Skjermo, Jorunn; Forbord, Silje; Steinhovden, Kristine; Handå, Aleksander (Research report, 2014)Butare Alaria esculenta er en av de store tareartene som vokser langs Trøndelagskysten og som er attraktiv å begynne å dyrke med tanke på anvendelse til flere ulike produkter. Den vokser raskt, produserer mye biomasse og ... -
Utilization of excess nutrients from land-based aquaculture facilities by Hediste diversicolor (O.F. Müller, 1776) - Production of polychaete biomass and its potential use in fish feed
Seekamp, Inka (Master thesis, 2017)Farming of Atlantic salmon (Salmo salar) is highly dependent on marine resources such as fish meal and fish oil. In Norway, supply of high quality raw materials and control of waste discharges from aquaculture are factors ...