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.
2011
Forfattere
Leif SundheimSammendrag
Det er ikke registrert sammendrag
Forfattere
Leif SundheimSammendrag
Risk assessment of two introduced pseudofungi.
Forfattere
May-Guri Saethre Nina Oseth Svendsen Børge Holen Francoise Assogba-Komlan Ignace GodonouSammendrag
Det er ikke registrert sammendrag
Forfattere
Karen Hjorth Kim Johansen Børge Holen A Andersson H. B. Christensen K Siivinen M ToomeSammendrag
Det er ikke registrert sammendrag
Forfattere
Lise Gunn Skretteberg Agnethe ChristiansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Nina JohansenSammendrag
Topics: a) What is pesticide resistance?, b) History of pesticide resistance c) Concequenses of pesticide resistance, d) Resistance risk factors, e) Pesticide Resistance Management, f) Regulation of the placement of pesticides on the market, g) National action plan, h) International cooperation and coordination of pesticide resistance management.
Forfattere
Ketil HaarstadSammendrag
Det er ikke registrert sammendrag
Forfattere
Lita Greve Kjell Magne Olsen Sverre KobroSammendrag
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Forfattere
Ole Petter Laksforsmo Vindstad Snorre Hagen Jane Uhd Jepsen Lauri Teemu Kapari Tino Schott Rolf Anker ImsSammendrag
Population cycles of the winter moth (Operophtera brumata) in sub-arctic coastal birch forests show high spatiotemporal variation in amplitude. Peak larval densities range from levels causing little foliage damage to outbreaks causing spatially extensive defoliation. Moreover, outbreaks typically occur at or near the altitudinal treeline. It has been hypothesized that spatiotemporal variation in O. brumata cycle amplitude results from climate-induced variation in the degree of phenological matching between trophic levels, possibly between moth larvae and parasitoids. The likelihood of mismatching phenologies between larvae and parasitoids is expected to depend on how specialized parasitoids are, both as individual species and as a guild, to attacking specific larval developmental stages (i.e. instars). To investigate the larval instar-specificity of parasitoids, we studied the timing of parasitoid attacks relative to larval phenology. We employed an observational study design, with sequential sampling over the larval period, along an altitudinal gradient harbouring a pronounced treeline outbreak of O. brumata. Within the larval parasitoid guild, containing seven species groups, the timing of attack by different groups followed a successional sequence throughout the moth’s larval period and each group attacked 1–2 instars. Such phenological diversity within parasitoid guilds may lower the likelihood of climate-induced trophic mismatches between victim populations and many/all of their enemies. Parasitism rates declined with increasing altitude for most parasitoid groups and for the parasitoid guild as a whole. However, the observed spatiotemporal parasitism patterns provided no clear evidence for or against altitudinal mismatch between larval and parasitoid phenology.
Forfattere
Abdelhameed Elameen Arild Larsen Sonja Klemsdal Siri Fjellheim Leif Sundheim Susan Msolla Esther Masumba Odd Arne RognliSammendrag
Det er ikke registrert sammendrag