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.
2020
Forfattere
Mindaugas Liaudanskas Rugile Okuleviciute Juozas Lanauskas Darius Kviklys Kristina Zymone Tamara Rendyuk Vaidotas Žvikas Nobertas Uselis Valdimaras JanulisSammendrag
The aim of this study was to determine the composition and content of phenolic compounds in extracts of plum fruit. Fruit of 17 plum cultivars were analyzed. Fruit samples were collected in 2019 from fruit trees with “Myrobalan” (P. cerasifera Ehrh.) and “Wangenheim Prune” (P. domestica L.) rootstocks. The following glycosides of the flavonol group were identified: avicularin, isorhamnetin-3-O-rutinoside, isoquercitrin, hyperoside, rutin, and an aglycone quercetin. Compounds of the flavan-3-ol group were identified, such as (+)-catechin, procyanidin C1, and procyanidin A2, along with chlorogenic acid attributed to phenolic acids and a non-phenolic cyclitol–quinic acid. Of all the analytes identified in plum fruit samples, quinic acid predominated, while chlorogenic acid predominated among all the identified phenolic compounds, and rutin predominated in the flavonol group. Hierarchical cluster analysis (HCA) and principal component analysis (PCA) revealed that fruit samples of “Kubanskaya Kometa”, “Zarechnaya Raniaya”, “Duke of Edinburgh”, “Jubileum”, and “Favorita del Sultano” cultivars had different quantitative content of phenolic compounds from that observed in other samples. The highest total amount of phenolic compounds was found in the European plum samples of the “Zarechnaya Rannyaya” cultivar, while the amount of quinic acid was the highest in plum fruit samples of the “Jubileum” cultivar.
Forfattere
Abdelhameed Elameen Vera M. Kosman Mette Thomsen Olga N. Pozharitskaya Alexander N. ShikovSammendrag
Rhodiola rosea L. (roseroot) is an adaptogen plant belonging to the Crassulaceae family. The broad spectrum of biological activity of R. rosea is attributed to its major phenyletanes and phenylpropanoids: rosavin, salidroside, rosin, cinnamyl alcohol, and tyrosol. In this study, we compared the content of phenyletanes and phenylpropanoids in rhizomes of R. rosea from the Norwegian germplasm collection collected in 2004 and in 2017. In general, the content of these bioactive compounds in 2017 was significantly higher than that observed in 2004. The freeze-drying method increased the concentration of all phenyletanes and phenylpropanoids in rhizomes compared with conventional drying at 70 °C. As far as we know, the content of salidroside (51.0 mg g−1) observed in this study is the highest ever detected in Rhodiola spp. Long-term vegetative propagation and high genetic diversity of R. rosea together with the freeze-drying method may have led to the high content of the bioactive compounds observed in the current study.
Sammendrag
Seedlings from seeds collected in three natural populations of Norway spruce (Picea abies (L. Karst)) in each of 21 provenances distributed between latitudes 63ºN to 66º20’N and altitudes from 25 to 500 m in Trøndelag og Nordland counties were tested in nursery trials and one long-term field trial. Large provenance variation was found for phenology traits and early height growth in the nursery trials. A strong clinal variation was found for these traits relative to latitude and altitude. These relationships were weaker for height and diameter at ages 26 and 40 years. The timing of bud flush was strongly related to the temperature conditions at the seed collection sites, whilst terminal bud set and lammas shoot percentages showed high correlation coefficients with the provenance latitude. Provenances in the same geographic region showed large differences in height and diameter Growth in the field trial. The long-term experimental site Spelrem is situated within the northern Natural range of Norway spruce and the general trend in this material is that provenances from the Northern part of the range perform better compared with provenances from more southern areas. Hence, the gain from provenance transfer seems to be limited under the present climatic conditions in this region.
Forfattere
Annika M. Felton Emma Holmström Jonas Malmsten Adam Felton Joris P.G.M. Cromsigt Lars Edenius Göran Ericsson Fredrik Widemo Hilde Karine WamSammendrag
Diet quality is an important determinant of animal survival and reproduction, and can be described as the combination of different food items ingested, and their nutritional composition. For large herbivores, human landscape modifications to vegetation can limit such diet-mixing opportunities. Here we use southern Sweden’s modified landscapes to assess winter diet mixtures (as an indicator of quality) and food availability as drivers of body mass (BM) variation in wild moose (Alces alces). We identify plant species found in the rumen of 323 moose harvested in Oct-Feb, and link variation in average calf BM among populations to diets and food availability. Our results show that variation in calf BM correlates with variation in diet composition, diversity, and food availability. A varied diet relatively rich in broadleaves was associated with higher calf BM than a less variable diet dominated by conifers. A diet high in shrubs and sugar/starch rich agricultural crops was associated with intermediate BM. The proportion of young production forest (0–15 yrs) in the landscape, an indicator of food availability, significantly accounted for variation in calf BM. Our findings emphasize the importance of not only diet composition and forage quantity, but also variability in the diets of large free-ranging herbivores.
Forfattere
Inger MartinussenSammendrag
Det er ikke registrert sammendrag
Foredrag – Vegetasjon og beite i området Asbjørnsdalen – Grøndalen - Tverrfjellet
Magnus Stenbrenden
Forfattere
Magnus StenbrendenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Norsk institutt for bioøkonomi utførte somrene 2018 og 2019 vegetasjonskartlegging i Lesja kommune. I denne rapporten sammenstilles resultater fra i alt 151 km². Kartlegginga er gjort etter instruks for kartlegging i målestokk 1:20 000–50 000 (VK25). Det er laga vegetasjonskart og 2 avleda temakart for beite for sau og storfe. Denne rapporten beskriver metoden for kartlegging, registrerte vegetasjonstyper og deres fordeling i området. Det er gitt en omtale av beiteverdi og beitekapasitet, og noen råd til skjøtsel av kulturlandskap og beite i kartområdet.
Sammendrag
Norsk institutt for bioøkonomi har vegetasjonskartlagt to jevnstore områder i Meråker kommune på i alt 103 km². Av det kartlagte arealet er 17 % over skoggrensa, litt i bjørkeskogbeltet og det meste i nordboreal barskog. Kartlegginga er gjort etter instruks for kartlegging i målestokk 1:20 000 - 50 000 (VK25). Det er laga vegetasjonskart og to temakart for beitekvalitet for sau og storfe. Denne rapporten beskriver metode for kartlegging, registrerte vegetasjonstyper og hvor de opptrer. Det er også gitt en omtale av beiteverdi og beitekapasitet for hvert område.
Sammendrag
Norsk institutt for bioøkonomi utførte somrane 2018-19 vegetasjonskartlegging i Røros kommune. Samla areal var 200 km². Kartlegginga er gjort etter instruks for kartlegging i målestokk 1:20 000 - 50 000 (VK25). Det er laga vegetasjonskart og 3 avleia temakart for beite for sau og storfe, og barmarksbeite for rein. Denne rapporten beskriv metode for kartlegging, registrerte vegetasjonstypar og deira fordeling i området. Det er gjeve ein omtale av beiteverdi og beitekapasitet, samt nokre råd kring skjøtsel av kulturlandskap og beite i kartområdet.
Sammendrag
Det er ikke registrert sammendrag