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
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
Sammendrag
CORINE Land Cover (CLC) er en sammenstilling av nasjonale arealdekkekart som til sammen utgjør et sømløst arealdekkekart for Europa. Kartet er laget i henhold til standardiserte krav til geometri og nomenklatur. CLC2000 ble ferdigstilt for Norge høsten 2008. Høsten 2009 ble også CLC2006 ferdig. Kartene skal i prinsippet representere arealdekket i Europa i hhv. år 2000 og år 2006. Med disse produktene inngår Norge i et felles europeisk arealdekkekart. CLC er oversiktskart som viser bebyggelse, jordbruk, skog, annen fastmark, myr og vann. Kartene foreligger på tre nivåer med 5, 15 og 44 klasser. I Norge er hhv. 5, 14 og 31 klasser representert. Kartene er egnet til visualisering av arealdekket i Norge i målestokk mindre enn ca 1:250 000. CLC har minsteareal på 250 dekar. Hverken CLC2000- eller CLC2006-data kan brukes til å undersøke arealdekket lokalt eller regionalt i Norge. Datasettene bør heller ikke brukes til å lage statistikk for hele eller deler av landet. I et så forenklet datasett som CLC vil arealtallene alltid være forventningsskjeve. Klasser som er sjeldne, blir som oftest underrepresentert, og klasser som er dominerende, blir som oftest overrepresentert. Datasettene er laget med hensikt å komplettere det europeiske miljøbyråets (EEA) ”CORINE Land Cover”-database for Europa og for å oppnå et homogent europeisk arealdekkekart til bruk i europeisk målestokk. CORINE Land Cover inngår som ett av fire arealressurskart (AR5, AR50, AR250 og CLC) ved Norsk institutt for skog og landskap. CLC er produsert med støtte fra EEA og Miljøverndepartementet. EEA har delt eierskap til CLC. I Norge distribueres CLC fritt gjennom den nasjonale geodatainfrastrukturen Norge digitalt.
Forfattere
Eva Solbjørg Flo HeggemSammendrag
Det er ikke registrert sammendrag
Forfattere
Anne Bøen Ola HanserudSammendrag
Mined phosphorus (P) is introduced to food production from mineral fertilizers and feedstuffs, where fertilizer is the most important. Only a small part of this P ends up on our forks. The agricultural soil itself is the most important sink for mined P in Norway. An extensive surplus of manure P in livestock-dense areas is one of the factors explaining lack of efficiency in P utilization in plant production. However, on the way from the fields to the fork phosphorus is lost in many waste streams - the most important being slaughtering waste. In addition to slaughtering waste, wastewater is the dominant sink for phosphorus from society. As a seafood producer, Norway also harvests considerable amounts of P from the sea – which is an interesting alternative source of P. There are large potentials in replacing mined P with recycled P, and the poster depicts some of the future phosphorus loops looked into in Norway.
Sammendrag
Vegetation height information is one of the most important variables for predicting forest attributes such as timber volume and biomass. Although airborne laser scanning (ALS) data are operationally used in forest planning inventories in Norway, a regularly repeated acquisition of ALS data for large regions has yet to be realized. Therefore, several research groups analyze the use of other data sources to retrieve vegetation height information. One very promising approach is the photogrammetric derivation of vegetation heights from overlapping digital aerial images. Aerial images are acquired over almost all European countries on a regular basis making image data readily available. The Norwegian Forest and Landscape Institute (Skog og Landskap) invited researchers and practitioners that produce and utilize photogrammetric data to share their experiences. More than 30 participants followed the invitation and contributed to a successful event with interesting presentations and discussions. We wish to thank the speakers for their contributions and hope that all participants found the seminar useful. These short proceedings of the seminar include summaries of the talks. The presentations, which provide more information, can be found at the end of this document.