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.
2023
Forfattere
Jennifer James Chedly Kastally Katharina B. Budde Santiago C. González-Martínez Pascal Milesi Tanja Pyhäjärvi Martin Lascoux Paraskevi Alizoti Ricardo Alía Olivier Ambrosio Filippos A Aravanopoulos Georg Von Arx Albet Audrey Francisco Auñón Camilla Avanzi Evangelia Avramidou Francesca Bagnoli Marko Bajc Eduardo Ballesteros Evangelos Barbas José M García Del Barrio Cristina C Bastias Catherine Bastien Giorgia Beffa Raquel Benavides Vanina Benoit Frédéric Bernier Henri Bignalet Guillaume Bodineau Damien Bouic Sabine Brodbeck William Brunetto Jurata Buchovska Corinne Buret Melanie Buy Ana M Cabanillas-Saldaña Bárbara Carvalho Stephen Cavers Fernando Del Caño Sandra Cervantes Nicolas Cheval José M Climent Marianne Correard Eva Cremer Darius Danusevičius Benjamin Dauphin Jean-Luc Denou Bernard Dokhelar Alexis Ducousso Bruno Fady Patricia Faivre-Rampant Anna-Maria Farsakoglou Patrick Fonti Ioannis Ganopoulos Olivier Gilg Nicolas De Girardi René Graf Alan Gray Delphine Grivet Felix Gugerli Christoph Hartleitner Katrin Heer Enja Hollenbach Agathe Hurel Bernard Issenhuth Florence Jean Véronique Jorge Arnaud Jouineau Jan-Philipp Kappner Robert Kesälahti Florian Knutzen Sonja T Kujala Timo A Kumpula Katri Kärkkäinen Mariaceleste Labriola Celine Lalanne Johannes Lambertz Gregoire Le-Provost Vincent Lejeune Isabelle Lesur-Kupin Joseph Levillain Mirko Liesebach David López-Quiroga Ermioni Malliarou Jérémy Marchon Nicolas Mariotte Antonio Mas Silvia Matesanz Benjamin Meier Helge Meischner Célia Michotey Sandro Morganti Tor Myking Daniel Nievergelt Anne Eskild Nilsen Eduardo Notivol Dario Isidro Ojeda Alayon Sanna Olsson Lars Opgenoorth Geir Østreng Birte Pakull Annika Perry Sara Pinosio Andrea Piotti Christophe Plomion Nicolas Poinot Mehdi Pringarbe Luc Puzos Annie Raffin José A Ramírez-Valiente Christian Rellstab Dourthe Remi Oliver Reutimann Sebastian Richter Juan J Robledo-Arnuncio Odile Rogier Elisabet Martínez Sancho Outi Savolainen Simone Scalabrin Volker Schneck Silvio Schueler Ivan Scotti Sergio San Segundo Vladimir Semerikov Lenka Slámová Ilaria Spanu Jørn Henrik Sønstebø Jean Thevenet Mari Mette Tollefsrud Norbert Turion Fernando Valladares Giovanni G. Vendramin Marc Villar Marjana Westergren Johan WestinSammendrag
New mutations provide the raw material for evolution and adaptation. The distribution of fitness effects (DFE) describes the spectrum of effects of new mutations that can occur along a genome, and is, therefore, of vital interest in evolutionary biology. Recent work has uncovered striking similarities in the DFE between closely related species, prompting us to ask whether there is variation in the DFE among populations of the same species, or among species with different degrees of divergence, that is whether there is variation in the DFE at different levels of evolution. Using exome capture data from six tree species sampled across Europe we characterized the DFE for multiple species, and for each species, multiple populations, and investigated the factors potentially influencing the DFE, such as demography, population divergence, and genetic background. We find statistical support for the presence of variation in the DFE at the species level, even among relatively closely related species. However, we find very little difference at the population level, suggesting that differences in the DFE are primarily driven by deep features of species biology, and those evolutionarily recent events, such as demographic changes and local adaptation, have little impact.
Sammendrag
Field trials with Norway spruce seedlings from 84 full-sib families from a factorial cross in Opsahl Seed Orchard and 11 provenances were planted at eight sites between altitudes between 600 and 900 m in Oppland County in Norway. Measurements of tree heights and assessments of stem and branch defects were made at regular intervals until 34 years from seed. Data from measurements made in nursery trials and from artificial freezing trials were also available. The families from the seed orchard had on average 12 % better height growth than the provenances. For volume growth per hectare, measured in two of the trials 30 years after planting, the families had a superiority of more than 30 %. A large variation among families was present for height growth and additive genetic variation was the main genetic factor. For the maternal half-sib families, the ranking of families for height was stable after 15 years from seed, and the five best families selected for height at that age were at age 34 years 6 % taller and produced 13 % more volume per hectare compared with the mean of all families. Weak relationships were present between traits measured in the nursery trial, the freezing test and the field trials. Assessments were made of cone production at age 20 years after planting and showed variation among families for the frequency of trees with cones.
Sammendrag
Artificial freezing tests were performed on seedlings from Norway spruce families at the end of the first growing season. Similar tests were made on twigs collected from trees in a progeny test at the end of growing season nine. The 26 families in the early test were included in the short-term progeny test with 100 full-sib families from a 10 x 10 factorial cross. All families were also planted in seven field trials in Norway, Sweden and Finland, from which data on mortality, tree heights and stem damage at age 10 years are available. Significant difference was found among families for freezing test injuries on whole intact seedlings at the end of the first growing season and for lethal temperature of needles on detached twigs collected at the end of growing season nine. However, no relationships were found between the freezing test scores of families in the two types of tests or few between these scores and the traits measured in the short-term and field trials. The results show that frost hardiness testing of families at a young age, grown under artificial temperature and light conditions in nursery, is a weak predictor of their performance under natural conditions in field at older ages.
Forfattere
Jørgen E. Olesen Robert M. Rees Sylvie Recous Marina Azzaroli Bleken Diego Abalos Ishita Ahuja Klaus Butterbach-Bahl Marco Carozzi Chiara De Notaris Maria Ernfors Edwin Haas Sissel Hansen Baldur Janz Gwenaëlle Lashermes Raia S. Massad Søren O. Petersen Tatiana Francischinelli Rittl Clemens Scheer Kate E. Smith Pascal Thiébeau Arezoo Taghizadeh-Toosi Rachel E. Thorman Cairistiona F. E. ToppSammendrag
Crop residues are important inputs of carbon (C) and nitrogen (N) to soils and thus directly and indirectly affect nitrous oxide (N2O) emissions. As the current inventory methodology considers N inputs by crop residues as the sole determining factor for N2O emissions, it fails to consider other underlying factors and processes. There is compelling evidence that emissions vary greatly between residues with different biochemical and physical characteristics, with the concentrations of mineralizable N and decomposable C in the residue biomass both enhancing the soil N2O production potential. High concentrations of these components are associated with immature residues (e.g., cover crops, grass, legumes, and vegetables) as opposed to mature residues (e.g., straw). A more accurate estimation of the short-term (months) effects of the crop residues on N2O could involve distinguishing mature and immature crop residues with distinctly different emission factors. The medium-term (years) and long-term (decades) effects relate to the effects of residue management on soil N fertility and soil physical and chemical properties, considering that these are affected by local climatic and soil conditions as well as land use and management. More targeted mitigation efforts for N2O emissions, after addition of crop residues to the soil, are urgently needed and require an improved methodology for emission accounting. This work needs to be underpinned by research to (1) develop and validate N2O emission factors for mature and immature crop residues, (2) assess emissions from belowground residues of terminated crops, (3) improve activity data on management of different residue types, in particular immature residues, and (4) evaluate long-term effects of residue addition on N2O emissions.
Forfattere
Ishita AhujaSammendrag
Det er ikke registrert sammendrag
Forfattere
Ishita AhujaSammendrag
Det er ikke registrert sammendrag
Forfattere
Per Holm NygaardSammendrag
Skogtilstanden i høyereliggende arealer i Nord-Østerdalen som ble overutnyttet i ved gruvedrift frem til ca. 1900 viser fortsatt stort innslag av fjellbjørk og glisne furuskoger med et stående volum varierende rundt 3-6 m3 per dekar. Den dårlige gjenveksten av furu i området kan trolig delvis forklares ut fra endret lokalklima etter rovhogstene, mangel på frø, vedvarende hardt beitetrykk og lokal forurensning fra smeltehyttene. I områder som ble klassifisert som skogreisingsarealer (70.000 daa) er det utført ulike kulturtiltak som viser at disse arealene har et langt større produksjonspotensiale. En tidobling av stående volum vil være mulig med aktiv kultursatsing og treslagsskifte om formålet er størst mulig produksjon og karbonbinding. Vrifuru kan være et bra alternativ på mange lokaliteter. Vektlegges restaurering av den tidligere furuskogen vil det naturlige treslagsvalget være stedegen furu. Per i dag er det begrenset tilgang på frø og plantemateriale fra høydelag 7, men mulighetene for naturlig foryngelse bør klarlegges. De siste tiårene med gunstigere temperatur har trolig medført økt andel modent frø i høyereliggende furuskog. Langtidsvirkninger av kølbrenning på bonitet og næringstilgang er tema i en masteroppgave knyttet til prosjektet og vil utgjøre endelig rapportering når oppgaven foreligger i 2024.
Forfattere
Tor MykingSammendrag
Det er ikke registrert sammendrag
Forfattere
Tor MykingSammendrag
Det er ikke registrert sammendrag
Forfattere
Tor MykingSammendrag
Det er ikke registrert sammendrag