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.
2026
Forfattere
Andony Melathopoulos Nicole Anderson Ramesh SagiliSammendrag
Det er ikke registrert sammendrag
Forfattere
Siv Mari Aurdal Alexander T. Sentinella Gerald Schmilewski James Altland Jean Caron Paul Alexander Martine Holtkamp Bart Vandecasteele Beatrix W. AlsaniusSammendrag
The term “sustainable growing media” is widely used in horticultural research, policy, and industry, yet its meaning remains ambiguous, inconsistently applied, and often unsupported by evidence, undermining the very decisions it is meant to guide. Materials are frequently characterised as sustainable based on single attributes, such as being peat-free, recycled, renewable or aligned with policy priorities, without demonstrating reliable horticultural performance, economic viability, social responsibility or reduced environmental impact within real production systems. This paper examines why defining sustainable growing media has proven persistently challenging and why a single, universal definition may be neither achievable nor even useful. Drawing on existing literature and policy initiatives, we analyse sustainability through its environmental, economic and social pillars, highlighting how narrow or assumption-based assessments obscure trade-offs and shift, rather than reduce, environmental and social burdens. We argue that sustainability in growing media is not an inherent material property but a context-dependent outcome that must be demonstrated within a defined production system. Rather than proposing a new definition, we outline eight minimum conditions for responsible use of the term, emphasising measurable impacts, functional performance, economic feasibility, and explicit treatment of trade-offs. Where such evidence is lacking, precise, verifiable descriptors should replace broad sustainability claims.
Sammendrag
Abstract Timothy ( Phleum pratense L.) is a perennial grass widely grown for livestock feed in temperate regions of the world. It is one of the primary forage grasses grown for seed in Scandinavia due to good cold tolerance and high‐quality feed characteristics. Changes to European Union requirements for use of organic seed in organic forage and livestock production are expected and will soon increase demand for organic timothy seed in the region. An inadequate nitrogen (N) supply is a key yield‐limiting challenge on many arable farms in Norway's main seed‐growing region. In this study, we investigated methods to produce organic timothy seed with limited access to manure, by intercropping seven legume species sown with timothy in the same row or in alternate rows. Timothy seed was harvested for two seed production years in three field experiments in southeastern Norway. Sowing annual legumes with timothy increased seed yield by 10%–25% in first‐year stands. Berseem clover ( Trifolium alexandrinum L.) and subterranean clover ( Trifolium subterraneum L.) sown in the same row with timothy provided the most consistent seed yield increases. Perennial legume intercrops decreased seed yield by 10%–36% in first‐year stands, but black medic ( Medicago lupulina L.) provided 21%–64% seed yield increases in second‐year stands. Seed yield increases in response to legume intercrops were attributable to panicle number and seed number but not seed weight. Timothy seed purity standards can be met if the legume has a seed size and shape that can be removed during seed cleaning.
Forfattere
Arne SteffenremSammendrag
Det er ikke registrert sammendrag
Sammendrag
Errors in thematically detailed land-cover maps have large consequences for downstream applications. Moreover, simulation-based studies suggest that land-cover classifiers are sensitive to errors in reference data. We (1) quantified the expected error from field interpretation of land-cover types; (2) the sensitivity of classifiers to reference data errors; and (3) the error transferred from reference data to classifiers. Lastly, we (4) recommended strategies to reduce errors. The study area was mapped by 12 field interpreters divided into three equal-sized experience-level groups. The field-based land-cover maps were aggregated to three thematic resolutions and used to train 6804 land-cover classifiers by varying inputs, algorithm, and hyperparameter values. Separately from the first field campaign, four field interpreters classified validation data points, which were used to quantify error for each field interpreter and land-cover classifier, as the proportion of incorrectly classified validation points. We observed (1) generally high and varying levels of interpreter error; (2) a strong relationship between interpreter and classifier error; and (3) a net positive transfer of errors from reference data to classifiers. Because classifier error seems largely driven by interpreter error at the levels commonly observed in thematically detailed land-cover mapping, we (4) recommend strategies to reduce interpreter error before modelling.
Forfattere
Liv Guri VelleSammendrag
Dette er en NiN3-forelesning som adresserer NiN3 og variabelsystemet i tillegg til systemer som påvirkningsfaktorer og forringelser, miljødirektoratets kartleggingsinstruks, fagsystemet for økologisk tilstand, arealrepresentativ naturovervåking, arealplanlegging og KU.
Annen presentasjon – Kampen om naturen, om økosystemer, arter og naturens tålegrenser
Liv Guri Velle
Forfattere
Liv Guri VelleSammendrag
Kampen om naturen, om økosystemer, arter og naturens tålegrenser. Dette er eit talkshowformat som leverer formidling og diskusjon om eitt aktuelt tema. Målet er eit meir opplyst og kunnskapsbasert offentleg ordskifte.
Forfattere
Edward Carbezas-Garcia Vibeke Lind Linus Kiprotich J. Gakige Chris S. Jones Claudia ArndtSammendrag
Det er ikke registrert sammendrag
Forfattere
Liv Guri VelleSammendrag
Nyheitssak på NRK Kveldsnytt om landskapsbrannen i Ålesund. Intervju om årsaker til brannen og viktigheita av brannfare i kommunale ROS-analyser.
Forfattere
Liv Guri VelleSammendrag
Ei nyheitssak i NRK Møre og Romsdal om årsaker til ukontrollerte brannar i landskapet, og faren for at dette kan skje igjen. Intervju som blei til skriftleg sak på NRK sine nettider.