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.
2012
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Oddvar H. Ottesen Jim Treasurer Richard FitzGerald Julie Maguire Celine ReboursSammendrag
The use of wrasse to clean salmon of sea lice during production in sea cages is growing as an alternative to therapeutic treatments. Since wild wrasse populations are limited, the transnational EcoFish Project is working to develop hatchery production methods and improved farming practices with wrasse. The Eco-Fish partners have established breeding stocks, and although still variable, egg fertilization and hatching rates have improved. It takes about two years for wrasse to reach stocking size.
Forfattere
Jack D´Arcy Eugenia Dunaevskaya Jim W. Treasurer Oddvar Ottesen Julie Maguire Nona Zhuravleva Åsbjørn Karlsen Céline Rebours Richard D. FitzGeraldSammendrag
Eight primary embryonic developmental stages were assigned to eggs of ballan wrasse Labrus bergylta using key morphological features following standardized nomenclature: Ia, Ib, II, III, IV, V, VI and VI+, reared from single family clutches under comparable environmental conditions in Ireland and Norway. Development in L. bergylta is typical of demersal marine finfish species with a short egg stage. Hatching occurred c. 123 h post-fertilization (hpf) equivalent to 62・5 degree days at 12・2 } 1・10◦ C (mean } s.d.), after which the larvae swam intermittently near the surface of the water column.
Forfattere
alena gibalova Eivind Vangdal A. LeufvénSammendrag
The flavor of apples after storage is important to the consumers. Most often factors like decay, firmness and the contents of soluble solids and acidity are regarded as the limiting factors for storability of apples. The amount of volatile aroma compounds is less studied. Using head space analyses the amounts of 8 compounds known to be important to aroma of apples were studied during storage. Some compounds increased while others decreased during storage. Apples of three cultivars and from trees treated with foliar fertilization with nitrogen and calcium were included. The early ripening cultivar ‘Discovery’ had more aroma compounds in November and less in February. In the late ripening cultivar ‘Elstar’ the content of aroma compounds was low in November. However, the amounts were more than doubled in February. The foliar fertilization with nitrogen tended to reduce the amount of aroma compounds while the highest content was found in apples from trees treated with calcium. However, these tendencies were not statistically significant. In ‘Discovery’ the content of aroma compounds may be a limiting factor to the storability of this cultivar.
Forfattere
Arild AndersenSammendrag
The present paper comments on thirty-three of the forty-seven species belonging to six Agromyzidae genera and presently known to occur in Norway. Thirteen species are reported new to the Norwegian fauna belonging to the family Agromyzidae. The species are: Amauromyza (Cephalomyza) chenopodivora Spencer, 1971, Amauromyza (Cephalomyza) monfalconensis (Strobl, 1909), Cerodontha (Butomomyza) rohdendorfi Nowakowski, 1967, Cerodontha (Butomomyza) scutellaris (Roser, 1840), Cerodontha (Cerodontha) fulvipes (Meigen, 1830), Cerodontha (Cerodontha) stackelbergi Nowakowski, 1972, Cerodontha (Dizygomyza) caricicola (Hering, 1926), Cerodontha (Icteromyza) capitata (Zetterstedt, 1848), Cerodontha (Poemyza) pygmina (Hendel, 1931), Metopomyza flavonotata (Haliday, 1833), Metopomyza scutellata (Fallen, 1823), Metopomyza xanthaspioides (Frey, 1946) and Aulenagromyza buhri (de Meijere, 1938). In addition new regional data is given for twenty species previously reported from Norway. The biology of the larva, when known, and the distribution in Norway and Europe are commented on for each of the species.
Forfattere
Kristin DaugstadSammendrag
A project funded by the Norwegian Genetic Resource Center started in 2003, the purpose being to make new landraces of the most common meadow species in Norway. These are the two grasses timothy ( Phleum pratense) and meadow fescue( festuca pratensis), and the legume red clover (Trifolium pratense) For each species the goal is to develop several local populations adapted to different climatic conditions and differentfarming systems. To achieve this we must restart the processes that developed our first landraces.
Forfattere
Liv Guri Velle Vigdis Vandvik Liv S. NilsenSammendrag
Our study demonstrates that old stands do develop characteristic heathland vegetation and structure after fire, and while potential invasives into the system such as trees and rhizomatous species are present, they do not impair Calluna regeneration or vegetation development towards the target heathland community composition and structure. Further, as our young stands are only in their second fire rotation after restoration, we suggest that characteristic dynamics of managed heathlands can re-establish relatively rapidly, even in severely degenerated sites (50 years since last fire). Site-specific factors also need to be considered. We conclude that there is restoration potential in old heaths, despite slow dynamics in the first rotation.
Forfattere
Carl-Einar AmundsenSammendrag
Hovedmålet for prosjektet var å bestemme om det var forskjeller i innhold av metaller og organiske forurensninger i den organiske avfallsfraksjonen fra sentralsortert og kildesortert avfall. Det ble tatt ut grønne poser med kildesortert matavfall fra Oslo, kildesortert avfall fra Hadeland og Ringerike Avfallsselskap (HRA) og sentralsortert avfall fra Bjørnhyttan avfallsanlegg, Ludvika kommune, i Sverige. Kort kontakttid og liten kontaktflate mellom organisk avfall og fremmedlegemer gjør det mulig å redusere innholdet av tungmetaller og organiske forurensninger i det organiske avfallet. Kildesortering av husholdningsavfall er med på å redusere kontakttiden og er således et første viktig steg for å sikre høy kvalitet på organisk avfall som råstoff til biogass- og komposteringsprosesser. Fjerning av fremmedlegemer før oppmaling av innsamlet avfall vil redusere innholdet av tungmetaller og organiske forurensninger i organisk avfall. En nærmere vurdering av de høye nivåene av ftalater i det organiske avfallet fra HRA og Ludvika og hvilken betydning dette har for utnyttelse av sluttproduktet etter behandlingsprosessen, bør gjennomføres
Forfattere
Grete K. Hovelsrud Ingrid Kvalvik Halvor Dannevig Inger Hanssen-Bauer Sigridur Dalmannsdottir Lars Rønning Eivind Uleberg Bob van OortSammendrag
An interdisciplinary study, based on downscaled climate change scenarios and interviews with local farmers in Northern Norway, has assessed biological and agronomic effects of climate change, and interaction with political, economic and social factors. The study confirms that farmers are facing complex challenges. Negative effects from climate change combine with other challenges.
Forfattere
Ashraful Islam Sissel Haugslien Dag-Ragnar Blystad Sissel Torre Jorunn Elisabeth Olsen Henrik Lütken Jihong Liu ClarkeSammendrag
Poinsettia is one of the most important potted ornamentals for Christmas. Appropriate plant height is an important trait in poinsettia production. Concern about the negative effects of chemical growth retardants has limited their availability and use. Generation of compact poinsettia plants by genetic transformation has become a promising approach.