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.
2025
Forfattere
Fride Høistad ScheiSammendrag
Det er ikke registrert sammendrag
Forfattere
Alexandro B. Leverkus María Medina Alba Lazaro-Gonzalez Laura Levy Olivia Lorente-Casalini Marino P. Reyes Martín Enrique Andivia Alessandro Bizzarri Henrik Böhlenius Vito E. Cambria Claudia Cocozza Branislav Cvjetkovic Giovanbattista de Dato Lenka Ehrenbergerova Peter Ferus Lorena Gomez-Aparicio Arndt Hampe Kjersti Holt Hanssen Marcin Jakubowski Ivona Kerkez Jankovic Marcin Klisz Wojciech Kowalkowski Klaus Kremer Jelena Lazarevic Dagnija Lazdina Emanuele Lingua Magnus Löf Manuel E. Lucas-Borja Adrian Łukowski Paula Maia Paola Mairota Alberto Maltoni Barbara Mariotti Raffaella Marzano Lucia Mondanelli Antonio Montagnoli Maria Cristina Monteverdi Francisco B. Navarro Reyes Juan A. Oliet Maria S. Patrício Zoran Poduska Vladan Popovic Radosław Puchałka Piotr Robakowski Piotr Sewerniak Carmen Urena-Lara Pedro Villar-Salvador Johanna Witzell Nicolo Anselmetto Inger Sundheim FløistadSammendrag
Seedling emergence constitutes a critical recruitment step, and early growth relates to plant competitive ability. Understanding their drivers has implications for forestry and forest ecosystem conservation, restoration, and adaptation to climate change. We seeded 6984 acorns in an experiment with 97 cases at 45 sites in 15 European countries, encompassing 12 oak species. We tested whether the quality of the acorn batch, site-level weather and soil characteristics, year of seeding, and species’ mean specific leaf area (SLA) affected the emergence and early growth of seedlings after the first summer. Germination potential and acorn dry weight, measured under controlled conditions, were positively associated with emergence and early growth. Seedling emergence was negatively associated with the mean monthly temperature and cumulative winter precipitation, and it was higher in the seedling cohort that was spared from the 2021 drought. Additionally, seedling emergence was positively related to soil nutrient concentration and negatively to increasing soil pH, but not to water-holding capacity, and growth was unrelated to soils. Species-level SLA was not related to either response. The four main study species –Quercus cerris, Q. ilex, Q. petraea, and Q. robur– responded similarly to weather but not to soil conditions. We conclude that, at a continental scale, and assuming that species establish within their current distributions, (a) oak seedling emergence and early growth are associated with acorn quality rather than species identity or SLA, (b) they are highest at sites with low winter precipitation and temperature, (c) emergence is reduced in dry years, and d) soil properties play a secondary role at this early recruitment stage.
Forfattere
Paulina Jedynak Mariona Bustamante Matthieu Rolland Vicente Mustieles Cathrine Thomsen Amrit Kaur Sakhi Azemira Sabaredzovic Maria Foraster Mireia Gascon Maria Dolores Gómez-Roig Elisa Llurba Ioar Rivas Isabelle Ouellet-Morin Sam Bayat Sarah Lyon-Caen Oscar J. Pozo Martine Vrijheid Jordi Sunyer Rémy Slama Payam Dadvand Claire PhilippatSammendrag
Det er ikke registrert sammendrag
Sammendrag
Methyl jasmonate (MeJA) is known to effectively protect Norway spruce (Picea abies) against pests and pathogens. However, MeJA application to spruce saplings can significantly reduce growth and is not feasible to use in protecting older trees due to cost. Seed treatment with MeJA or other priming stimulants with fewer negatives could be a practical solution to enhance Norway spruce resistance. Therefore, we assessed the potential of Norway spruce seed treatment with MeJA, pipecolic acid (PipA), lignan (Li), and chitosan (Chi) in enhancing the resistance of the emerged seedlings against Botrytis cinerea. For the first time, MeJA seed treatment was shown to reduce the mortality of the seedlings effectively after B. cinerea infection, with a growth reduction as a side effect. To understand the mechanisms underlying this phenomenon, we quantified phenolics, defense hormones, and differential transcript expressions. MeJA seed treatment increased the concentration of the flavan-3-ols catechin and proanthocyanidin B1. Transcriptomic data suggested an increase in oxidative stress protection, cell wall reinforcement, and pathogenesis-related protein production. Our data also suggested an antagonistic relationship in hormonal signaling between abscisic acid (ABA) and jasmonic acid (JA)/ethylene (ET). Overall, our findings indicated MeJA seed treatment enhanced resistance of young seedlings against B. cinerea via a multitude of defense responses, modulated by complex regulatory systems.
Sammendrag
Abstract Turfgrass winter kill due to freeze/thaw cycles and ice encasement (IE) is a problem on putting greens the Nordic countries. Our objectives were (1) to investigate how green coverage with impermeable plastic before IE affects soil temperature, O 2 and CO 2 concentrations, winter survival and spring recovery of creeping bentgrass (CRB), red fescue (RF), and annual bluegrass (AB) and (2) to explore how these turfgrasses are affected by snow and ice removal during the entire winter or parts of it. Six treatments were imposed on 5‐month‐old turf of the three species during the winters 2020/2021 and 2021/2022 at NIBIO Apelsvoll, Norway (60°42′ N). With an average soil temperature at 2‐cm depth of −0.9°C and the lowest O 2 concentrations around 5%, conditions under IE or plastic + IE treatments never became anoxic. On average for six treatments and 2 years, CRB and RF had significantly better winter survival (both 52%) than AB (25%). Turfgrass winter survival, spring color, and spring growth were significantly better (62% survival on average for species) with plastic between the grass and 10‐cm IE than with 10‐cm IE directly on the grass (23% survival). Snow and ice removal throughout the winter or before IE in early January improved turfgrass freezing tolerance in January but did not improve winter survival, green color, or spring growth compared with the control treatment with natural winter conditions. We conclude that putting greens in areas with unstable winters and risk for prolonged IE ought to be protected by impermeable plastic. Ventilation under the plastic may be necessary on old greens with more organic matter than in this experiment. On frozen uncovered greens, it is better to avoid prolonged IE by snow removal before rain or warm spell in December/early January than by mechanical ice removal in March.
Forfattere
Fride Høistad ScheiSammendrag
kogprat, representert ved Andreas og Perrine fra Pamadillo og Fride fra NIBIO, besøkte 6. klasse ved Lysekloster skole for en kreativ og lærerik dag. Målet var å få bedre innblikk i hva elevene kan og mener om skog.
Forfattere
Fride Høistad ScheiSammendrag
Skogprat på skolebenken hos 2. klasse. På spørsmålet om de likte å være i skogen, var svaret fra 2. klassingene et rungende ja! De fortalte ivrig om alt de likte å gjøre: å gå på tur, klatre høyt i trærne, tenne bål og grille både pølser og marshmallows. Mange likte å forske i skogen, og lete etter småkryp og dyr. Det var også flere som likte å bygge hytter av greiner og kvister, eller lage ting av pinner og kongler som de fant på bakken. Noen fortalte til og med at de liker å sove i skogen, men da helst i telt eller hengekøye.
Forfattere
Fride Høistad ScheiSammendrag
I denne tilsynelatande frodige skogen skjer det noko forskarane er sterkt uroa for. Alle asketre er i ferd med å døy ut. Det same skjer mange stader.
Forfattere
Fride Høistad ScheiSammendrag
Det er ikke registrert sammendrag
Forfattere
Fride Høistad ScheiSammendrag
Det er ikke registrert sammendrag