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.
2017
Authors
Rolf Nestby Sebastien GuéryAbstract
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Abstract
Large-scale bark beetle outbreaks in northern conifer forests have already demonstrated huge impacts on forest economy, ecosystems and carbon dynamics. In North America, a historically unprecedented outbreak of the mountain pine beetle has expanded north- and eastwards beyond its historical range, and has reached epidemic levels in areas of northern British Columbia previously thought to be unsuitable for beetle survival. In Europe, the vast northern spruce forests have been spared from bark beetle outbreaks in the past, but here we review some recent observations and research results indicating that this may be undergoing change. For example, monitoring data of the most serious tree-killing bark beetle in Europe, Ips typographus, show a several-fold increase of the populations in its northern range during warm years. In the extensive spruce forests of northern Fennoscandia and Russia, a new phenomenon of tree-killing episodes by I. typographus has occurred in the last decade. Northern localities with one beetle generation per year in the past are now having more often two. Also other bark beetle species in the genus Ips have demonstrated a fast northward expansion in Europe, including one species contributing in bark beetle outbreaks of I. typographus in Central and Southern Europe.
Authors
Håvard Steinshamn Karl-Christian Mahnert Inga Marie Aasen Spiridoula Athanasiadou Heidi L Enemark Kristin SørheimAbstract
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Authors
Håvard Steinshamn Karl-Christian Mahnert Inga Marie Aasen Spiridoula Athanasiadou Heidi L Enemark Kristin SørheimAbstract
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Abstract
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Authors
Line Diana Blytt Eva Brod Anne Falk Øgaard Erik Johannessen Maria Magdalena estevez Bjarne PaulsrudAbstract
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Abstract
NSG har satt sammen et ulldømmingssett med tilhørende opplæringsmateriel - til bruk i egen flokk. Du kan bestille ullbedømmingssett og laste ned opplæringsmateriell her: http://www.nsg.no/sau/bedom-ullkvaliteten-pa-livlam-og-soyer-article12497-494.html
Authors
Unni AbrahamsenAbstract
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Abstract
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Authors
Finn-Arne HaugenAbstract
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