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.
2014
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Alexander Kopatz Rune Andreassen Hans Geir Eiken Siv Aarnes Camilla Tobiassen Rolf Randa Steinar Wikan Snorre HagenSammendrag
Knowledge on the number of female brown bears, especially reproducing females, is important for the wildlife management. One of the largest and densest populations of brown bears in Norway is located in Sør-Varanger, Finnmark, Northern Norway. Observations of females with cubs are reported regularly in the region. Information on the relatedness among individuals is often unknown as well as specifics on the number of reproductions and relatedness among females within this population. We have utilized genetic data originating from feces and hair samples collected in Sør-Varanger in the years 2004-2014 to investigate female brown bear localities. In the same period, personnel from the Norwegian State Nature Inspectorate (SNO) have observed 9 female brown bears with potential female cubs (a priori probability of 0.5). Sampling areas of those female brown bears and their potential offspring showed substantial geographical vicinity suggesting overlapping home ranges. We then calculated the likelihood ratios for these relationships using the forensic software Familias for 18-mother-female cub relationships. For 10 of 18 such relationships, the genetic relationship between mother and female cub were confirmed as their observation in the field was suggestive of. Of the initially observed 9 female bears, 6 have produced 10 female cubs, which here could be confirmed by genetic methods. The remaining 3 females were not excluded to be mothers to their potential cubs, but these relationships cannot be confirmed without additional DNA analyses. Another family relationship could also be confirmed between two observed female bears, but the type of relationship could not be determined.
Sammendrag
This study compared the forage quality of Festulolium entries of festucoid (Hykor) and loloid attributes (Felopa and Norwegian candivars) with major cultivars of the parent species perennial ryegrass and meadow fescue, and with timothy. Forage NDF, iNDF, kdNDF and DDM were analysed at vegetative stage, early heading, heading and anthesis during spring growth (SG) and two subsequent regrowths over two production years at two locations in Norway. NDF and iNDF increased and kdNDF and DDM decreased with advancing maturity, mostly expressed in SG, with negative correlations between DDM and NDF and iNDF and ADL and strong positive correlations with kdNDF. In SG, across years and locations, the content of NDF at heading stage was 30% higher and iNDF 400% higher in stems than in leaves, while stem kdNDF was about 50% of that in leaves. In general, timothy cv. Grindstad and Festulolium cv. Hykor had the highest NDF and iNDF and the lowest kdNDF values. Loloid entries of Festulolium were quite similar to perennial ryegrass, although the tetraploid entry proved better than the others with respect to forage quality. Regarding nutritive value, the festucoid and loloid types of Festulolium should be considered separate groups. The effect of year was more pronounced than that of location, for which the ranking of entries was quite similar. Loloid Festulolium is prone to winter damage and, although it has higher nutritive value than the parent species, its use will depend on the conditions for winter survival.
Forfattere
Einar StrandSammendrag
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Sammendrag
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Sammendrag
Nett-TV:Se hva som skjer når regn og snø drar med seg jord og næringsstoffer fra ulike jordbruksareal, og noen av tiltakene som kan settes inn for å begrense vannforurensning.
Forfattere
Oskar PuschmannSammendrag
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Forfattere
Gunn Mari StrømengSammendrag
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Forfattere
Gunn StrømengSammendrag
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Sammendrag
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