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.
2024
Forfattere
Svein Øivind Solberg Ievina Sturite Kari Bysveen Thomas Julseth Brown Randi Berland FrøsethSammendrag
Det er ikke registrert sammendrag
Sammendrag
En oppsummering av utprøvinger med halsklaver på lam fra 1990-tallet viste at klaver kan ha tapsforebyggende effekt, spesielt i områder hvor gaupe er den dominerende rovdyrarten Carlsen m.fl. 2006, Hansen & Carlsen 2006). I disse forsøkene var Os kvikk-klave for lam en av klavetypene som skilte seg positivt ut. Denne klavetypen er også prøvd ut på reinkalver som forebyggende tiltak mot ørn og gaupe, med en tydelig tapsreduserende effekt (Eilertsen 2021). Intensjonen er at klaven fysisk skal hindre dødelige bitt fra rovvilt i hals/nakkeregionen (Mysterud & Warren 1994). Bruk av halsklaver på lam er et kostnadseffektivt tiltak som enkelt kan iverksettes på stor skala i sauenæringa, men den tapsforebyggende effekten har ikke tidligere vært testet mot kongeørn. NIBIO utførte derfor et to-årig prosjekt for å teste effekten av halsklaver på lam i et kongeørneutsatt område.
Forfattere
Jørund JohansenSammendrag
Forskar Jørund Johansen (NIBIO) og Lene Granli i NRK P1 tar ein tur til fasiliteringsstasjonen for pollinerande insekt i Nygårdsparken i Bergen, kvar det er satt opp insektshotell, sandbed for solitære bier, humlekasser og blomsterkasser med stadeigne planter.
Forfattere
Arne StensvandSammendrag
Det er ikke registrert sammendrag
Sammendrag
Uneven-aged forests set certain challenges for cut-to-length harvesting work. It is a challenge to cost-effectively remove larger trees while leaving a healthy understory for regrowth. The study’s aim was to evaluate productivity and costs of harvesting two-storied silver birch (Betula pendula Roth) and Norway spruce (Picea abies (L.) H. Karst.) stands by creating time consumption models for cutting, and using existing models for forwarding. Damage to the remaining understory spruce was also examined. Four different harvesting methods were used: 1) all dominant birches were cut; 2) half of them thinned and understory was preserved; compared to 3) normal thinning of birch stand without understory; and 4) clear cutting of two-storied stand. Results showed the time needed for birch cutting as 26–30% lower when the understory was not preserved. Pulpwood harvesting of small sized spruces that prevent birch cutting was expensive, especially because of forwarding of small amounts with low timber density on the strip roads. Generally, when taking the cutting and forwarding into account, the unit cost at clear cuttings was lowest, due to lesser limitations on work. It was noted that with increasing removal from 100 to 300 m3 ha–1, the relative share of initial undamaged spruces after the harvest decreased from 65 to 50% when the aim was to preserve them. During summertime harvesting, the amount of stem damage was bigger than during winter. In conclusion, two-storied stands are possible to transit to spruce stands by accepting some losses in harvesting productivity and damages on remaining trees.
Forfattere
Kim Viggo Paulsen Weiby Sophie Julie Krizsan Ingjerd Dønnem Liv Østrem Margrete Eknæs Håvard SteinshamnSammendrag
Det er ikke registrert sammendrag
Forfattere
Eva BrodSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
This study investigated the variation in health- and sensory-related phytochemicals and agronomic characteristics of 26 head cabbage cultivars grown in randomized block field trials under commercial cultivation conditions in three different harvest seasons. The main goal was to provide increased knowledge on the nutritional quality of current and potential new cabbage cultivars to allow for a substantiated choice of cultivars for growers, industry, and consumers. Providing a wide diversity, all cultivars performed well with regard to agronomic characteristics that determine market quality and revenue. Sugar content, an important parameter for consumer acceptance, was surprisingly similar in all cultivars, although higher and more variable in the winter cultivars. Red cabbages were among the highest in vitamin C, total phenolics, and glucosinolate content, especially in the coveted glucoraphanin, the precursor to sulforaphane. Savoy cabbage was highest in glucosinolate content and high in vitamin C but more like white cabbages in all other phytochemical parameters. Among the 20 white cultivars across all three seasons, there were small but significant differences in phytochemical content. Thus, the potential for product differentiation among this selection of cabbages was high.
Sammendrag
Det er ikke registrert sammendrag