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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

Sammendrag

Simultaneously expanding and persistent Trifolium repens patches were studied in a nutrient-poor lawn that was frequently cut. Trifolium repens primary stolon growth strategies were analysed in relation to their location inside the patch, and according to patch size. It was hypothesised that different growth strategies inside a patch can explain a both persistent and expanding patch of Trifolium repens, and that growth strategies were different between patch sizes. The result indicated different growth strategies inside and at the border of patches. Trifolium repens stolons at the border were long, grew fast, had few lateral stolons and grew out of the patch while, stolons inside the patch were smaller, grew slowly, and had more lateral stolons and a wide range of growth directions. Growth strategies were not different between patch sizes. The directional growth and the high growth rate at the border will increase the patch size with time, while the growth strategy near the centre consolidates the patch in space and time, by placing ramets inside the patch. These growth strategies together in a patch result in Trifolium repens patches that are simultaneously persistent and on the increase. The results also indicate a division of labour among primary Trifolium repens stolons in a patch.

Sammendrag

We have mapped the quality of pasture resources for sheep grazing outdoor all year on ten localities along the west coast of Norway, using a classification scheme developed for this purpose. The classes reflect fodder value throughout the year. We performed an accuracy assessment, and identified possible sources of error. The accuracy is relatively low, and like others, we found that separating heath classes is a challenge. However, most errors can be explained by special mislocation and temporal change. Our further work with exploring grazing habits and landscape use of Old Norse sheep will include a GPS study of sheep movements overlaid with our pasture maps. We will update the map on that locality through field visits to enhance its accuracy.

Sammendrag

Kjøtproduksjon på kastratar er lite utbreidt i Norge. Berre 0,5 % av storfèslakta i Norge er kastratar, medan ung okse utgjer ca 43 %. Beite utgjer gjerne 40-50 % av kastraten sitt fôrbehov, og ei omlegging av deler av oksekjøtproduksjonen til kastratproduksjon vil føre til auka biomasseuttak på innmarks- og utmarksbeite. Dette vil kunne redusere attgroinga på Sør- og Vestlandet.