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.
2010
Forfattere
Inger HansenSammendrag
I Norge er det allerede flere aktive vokterhundmiljøer. Dette prosjektet kalt “Styrking av vokterhundmiljøet i Troms” skulle bidra til å stimulere bruken av vokterhunder som forebyggende tiltak mot tap av beitedyr til rovvilt i fylket.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
This study focused on a suite of vascular plant species (six herbs and two grasses) common to traditionally managed, species-rich grasslands in Western Norway. We assessed the suitability of two species transfer methods (seed sowing and soil seed bank) for restoration of species-rich grassland on a newly established road verge. We compared the species\" frequencies one and three years after they were sown on a naked, newly created road verge with their frequencies in aboveground vegetation and soil seed banks of comparable, local grasslands. Species frequencies in the aboveground vegetation differed significantly from those in the seed banks. Moreover, the frequencies in the seed banks differed from those recorded one year after sowing, and the frequencies in the aboveground vegetation differed from those recorded three years after sowing. Avenula pubescens and Knautia arvensis, found in more than 25% of the aboveground grassland plots, did not germinate from any of the seed bank samples. Festuca rubra, Galium verum, Pimpinella saxifraga and Silene vulgaris were more frequent in the aboveground plots than in the seed bank samples. Pimpinella saxifraga, Galium verum and Lychnis viscaria emerged quite well both from sown seeds and from the seed bank. Avenula pubescens was frequent in the aboveground vegetation, but did not germinate from sown seeds. Six species established well from seeds, and most increased in frequency in the sown plots from the first to the third year. No species was found in the sown plots only, but three years after sowing, three species were more frequent in the sown plots than in the aboveground vegetation of donor grassland plots. Our fine-scale, point-to-point study demonstrates that different restoration methods produce widely differing species composition even when the donor material is identical. We propose that different substrates and a combination of establishment methods (sowing and hay transfer) are needed as supplements to seed banks to re-establish species-rich grassland.
Forfattere
Hanne Gro Wallin Tom Joar KristiansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Hanne Gro Wallin Tom Joar KristiansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Olav SkjegstadSammendrag
Intervju med Liv Solemdal om matkurs for barnehageansatte.
Forfattere
Lone Ross GobakkenSammendrag
Det er ikke registrert sammendrag
Forfattere
Dag-Ragnar Blystad Randi Knudsen Carl Jonas Jorge Spetz Sissel Haugslien Kari Ørstad Mariano Cambra Tor MuntheSammendrag
In 1998 Plum pox virus (PPV) wasdetected for the first time in Norway. Virus-like symptoms were observed on several trees in a collection ofplum cultivars at Njøs Research Station in the Sogn og Fjordane County in WestNorway. The Norwegian Food SafetyAuthority and the Norwegian Crop Research Institute immediately startedsurveying other variety collections around the country, nuclear stock materialand orchards in all important plum-growing areas. Since 1998 we have surveyed themain part of the commercial plum orchards in Norway. About 75 000 individualtrees have been tested. About 1 % of the trees have been found infected by PPV.Only the PPV-D strain has been found. It is suspected that the main infectionsource was infected plums or apricots imported to Njøs around 1970 or earlier.In most plum orchards in Norway,the spread of PPV by aphids is relatively slow. Therefore, we expect to be ableto eradicate PPV from commercial plum orchards in the near future.The eradication work iscontinuing.