Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2011
Forfattere
Tibor Ferenczi Kenneth J. Thomson John Marshall BrydenSammendrag
Det er ikke registrert sammendrag
Forfattere
Johannes BreidenbachSammendrag
Digital aerial images over Vestfold county were acquired by TerraTec in summer 2007 with a Vexcel UltraCamX sensor. The flying height above-ground was approximately 2800-3000 m which resulted in images of approximately 1880x2880 m size. The images were acquired in north-south oriented flight strips with a 20% side and 60% within-strip overlap. Panchromatic image data were acquired in 20 cm ground sampling distance (GSD). Near infrared, red, green and blue image bands were acquired in 60 cm GSD but were pansharpened to a 20 cm pixel size by the data vendor. The original radiometric resolution of the images (12 bit) was resampled to 8 bit for archival storage. The plane location and orientation during image acquisition were logged using a GPS and an inertial navigation system (INS). To increase the accuracy of the external orientation, an aerial triangulation was performed based on 34 ground control points using the software Match-AT.
Sammendrag
Agriculture contributes a significant portion of the nutrient supply to the environment, being to a large degree responsible for the eutrophication of inland waters and coastal zones. Agricultural practices, climatic conditions, topography and geological conditions are important factors in determining these losses. However, also hydrological flow processes and pathways play an important role in the nutrient and soil loss processes. This chapter presents the results of a comparison of the hydrology in three catchments, two of which are located in Norway and one in Poland.
Forfattere
John Marshall Bryden Sjur Baardsen Katja Strøm Cappelen Kjersti Nordskog Karen RefsgaardSammendrag
Det er ikke registrert sammendrag
Forfattere
AnneLise Chapman Kjell Inge Reitan Celine Rebours Øyvind StrandSammendrag
Integrated multi-trophic aquaculture (IMTA) is a strategy to utilize all resources in an aquaculture system (i.e. primarily fish farms in Norway) in a holistic manner. In Norway, farmed salmon is fed on high-quality fish feed, mainly based on wild catches. Therefore, optimizing the utilization of this type of primary resource is economically, ecologically and socially sensible. To develop relevant IMTA systems in Norway, new species should be integrated into sea-based farming of salmon, thereby providing a method for re-cycling nutrients in the culture system while ameliorating potential environmental problems. Inorganic nutrients from fish farms can be taken up by primary producers such as seaweeds (Neori et al. 2004). In addition to nutrients, seaweeds also assimilate CO2 from surrounding waters, thus producing oxygen. Through both mechanisms - excess nutrient assimilation and oxygen production - seaweed farming will improve the water quality of the locality. Organic particles originating from the fish farm (e.g. from faeces or excess fish feed) can be cleared from the water by filter-feeding organisms such as bivalves. In addition, deposit feeding species (e.g. holothurians or other echinoderms) could be added to an IMTA system to re-cycle particles deposited under the farms at the sea floor. However, the placement and design of integrated farming systems requires an understanding of the transport and distribution of nutrients and particles in the marine system. Co-location of farms may lead to water transport reduction from frictional forces, and consumption of compounds vital for the farmed organisms (e.g. nutrients and oxygen) may cause depletion that affects the production capacity of the farm (Aure et al. 2007). Any reduction in water transport due to "shading" and consequently potential production losses need to be considered when addressing the benefits gained from IMTA. IMTA systems will contribute to our ecological understanding in the planning process of aquaculture operations and increased sustainability of the aquaculture industry as a whole. This is important for the continued development of the aquaculture industry in Norway.
Forfattere
Lampros LamprinakisSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Jarle Werner Bjerke Stef Bokhorst Matthias Zielke Terry V. Callaghan Francis W Bowles Gareth K. PhoenixSammendrag
Det er ikke registrert sammendrag
Forfattere
Matthias Zielke Jarle W. Bjerke Stef Bokhorst Terry V. Callaghan Francis W. Bowles Gareth K. PhoenixSammendrag
Det er ikke registrert sammendrag
Forfattere
Trygve S. AamlidSammendrag
Det er ikke registrert sammendrag