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
Jian LiuSammendrag
Det er ikke registrert sammendrag
Forfattere
Dario Isidro Ojeda Alayon Max John Robert L. Hammond Riitta Savolainen Kari Vepsäläinen Torstein KvammeSammendrag
The Formicoxenus genus-group comprises six genera within the tribe Crematogastrini. The group is well known for repeated evolution of social parasitism among closely related taxa and cold-adapted species with large distribution ranges in the Nearctic and Palearctic regions. Previous analyses based on nuclear markers (ultraconserved elements, UCEs) and mitochondrial genes suggest close relationship between Formicoxenus Mayr, 1855, Leptothorax Mayr, 1855 and Harpagoxenus Forel, 1893. However, scant sampling has limited phylogenetic assessment of these genera. Also, previous phylogeographic analyses of L. acervorum (Fabricius, 1793) have been limited to its West-Palearctic range of distribution, which has provided a narrow view on recolonization, population structure and existing refugia of the species. Here, we inferred the phylogenenetic history of genera within the Formicoxenus genus-group and reconstructed the phylogeography of L. acervorum with more extensive sampling. We employed three datasets, one data set consisting of whole mitochondrial genomes, and two data sets of sequences of the COI-5P (658 bp) with different number of specimens. The topologies of previous nuclear and our inferences based on mitochondrial genomes were overall congruent. Further, Formicoxenus may not be monophyletic. We found several monophyletic lineages that do not correspond to the current species described within Leptothorax, especially in the Nearctic region. We identified a monophyletic L. acervorum lineage that comprises both Nearctic and Palearctic locations. The most recent expansion within L. acervorum probably occurred within the last 0.5 Ma with isolated populations predating the Last Glacial Maximum (LGM), which are localized in at least two refugial areas (Pyrenean and Northern plateau) in the Iberian Peninsula. The patterns recovered suggest a shared glacial refugium in the Iberian Peninsula with cold-adapted trees that currently share high-altitude environments in this region.
Forfattere
Arne Stensvand Natalia A. Peres David M. Gadoury Belachew Asalf Tadesse Aruppillai SuthaparanSammendrag
Det er ikke registrert sammendrag
Sammendrag
The efficacy of currently available fungicides against apple scab, caused by the fungal pathogen Venturia inaequalis, was investigated in relation to when growers spray (ahead, during, or after rain) and how the spray reaches the target. The adaxial surface of individual leaves of potted trees were sprayed and then inoculated with ascospores of V. inaequalis, to establish dose-response curves for each fungicide. Discriminatory doses providing 50 and 90% symptom inhibition (EC50 and EC90, respectively) in sprays mimicking applications ahead of rain were used for experiments imitating alternative spray timings. Sprays were either applied during the spore germination phase or early or late after infection onset (either 336 or 672 degree-hours after inoculation, respectively), corresponding to grower spray schedules. Experiments were also carried out with sprays applied on the abaxial leaf surface to investigate fungicide efficacy through the leaf lamina. For all fungicides, the best efficacy was observed when sprays were applied during germination, followed by applications ahead of inoculation. Some products maintained equal or better efficacy at early infection, while efficacy in late infection dropped for all products, clearly indicating that this spray timing should be avoided. Some products with postinfection efficacy also showed translaminar efficacy. The close relationship found between EC50 of the active ingredients on potted trees and the label rate could help improve spraying decisions and reduce costs.
Forfattere
Paul Eric Aspholm Simo Maduna Juho Vuolteenaho Cornelya Klutsch Hallvard Jensen Ida Marie Luna Fløystad Ingrid Helle Søvik Ane-Sofie Bednarczyk Hansen Josefine Bergs Benedicte Beddari Helena Klöckener Snorre HagenSammendrag
Det er ikke registrert sammendrag
Forfattere
Paul Eric Aspholm Juho Vuolteenaho Cornelya Klutsch Ida Marie Luna Fløystad Ingrid Helle Søvik Ane-Sofie Bednarczyk Hansen Josefine Bergs Snorre HagenSammendrag
Det er ikke registrert sammendrag
Forfattere
Trond Simensen Willeke Anna Josephina A'Campo Andreas Atakan Jan Eirik Heggdal Linda Aune-Lundberg Andreas Vagnildhaug Øystein Kristensen Gunnar Ogwyn LindaasSammendrag
Arealplanlegging, planlagt utbygging, konsekvensutredning, Norge
Forfattere
Ingrid TengeSammendrag
Det er ikke registrert sammendrag
Sammendrag
I forbindelse med nydyrking på eiendom med bruksnummer og gårdsnummer 163/5 og 163/11 i Nes kommune er NIBIO engasjert for å planlegge og prosjektere fangdammer som skal rense avrenningsvann fra landbruksområdet som drenerer til bekken Drogga. Målet med anleggelsen av fangdammer er å minimere avrenning, forurensingseffekt og flompåvirkning på Drogga. Planlegging og detaljprosjektering av fangdammene er gjort med hensyn til nedbørsfeltet, terreng og perioder med flom. Det er prosjektert tre fangdammer, to sedimentasjonsdammer og sedimentasjonsdam med våtmarksfilter. Fangdamsystemet følger et søkk i terrenget hvor vannet naturlig drenerer mot. Sedimentasjonsdammene har areal på 1,9 og 1,2 daa og sedimentasjonsdammen med våtmarksfilter har et areal på 1 daa. Dette gir et samlet fangdamareal på 4,1 daa som oppfyller anbefaling om størrelse på fangdamareal i forhold til tilførende areal for avrenning.
Forfattere
Tove Vaaje-KolstadSammendrag
Det er ikke registrert sammendrag