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
Vidar Selås Geir Sonerud Erik Framstad John Atle Kålås Sverre Kobro Helge B. Pedersen Tor Kristian Spidsø Øystein WiigSammendrag
Grouse and vole numbers may peak after peaks in the seed crop of bilberry (Vaccinium myrtillus) because of reduced levels of feeding deterrents in bilberry plants. We predicted that grouse reproduction depends also on summer (June-September) temperatures in the 2 previous years, because bilberry plants will be less exhausted after a high seed crop in or after warm summers, and thus rebuild their chemical defence more quickly. After berry peak years, population indices of capercaillie (Tetrao urogallus) and bank vole (Myodes glareolus) in southern Norway were negatively related to summer temperatures in the previous year or previous 2 years. Willow grouse (Lagopus lagopus) chick production in five areas in Norway was negatively related to summer temperatures in the 2 previous years when controlling for vole density. A similar pattern was found for the bilberry-feeding moth (Eulithis populata), an important prey for grouse chicks. In eastern Norway, autumn densities of capercaillie and black grouse (Tetrao tetrix) were more likely to peak in vole peak years at high altitudes, where summer temperatures are low. We conclude that high summer temperatures may limit grouse reproduction through the effect on bilberry plants and that a warm climate thus adversely affects population levels of grouse.
Forfattere
Lillian ØygardenSammendrag
Nordisk Baltisk workshop
Forfattere
Ingrid Kvalvik Sigridur Dalmannsdottir Halvor Dannevig Grete K. Hovelsrud Lars Rønning Eivind UlebergSammendrag
As a primary industry, agriculture is directly dependent on natural conditions and therefore potentially vulnerable to the consequences of climate change. In Norway and Northern Norway in particular, the future climatic changes are expected to be overall positive. Still, the consequences for agriculture are not straightforward, but dependent on the interaction between different weather and biological elements, as well as political, economic and social conditions. In this interdisciplinary study we have assessed biological and agronomic effects of climate change, and their interaction with political, economic and social factors, to identify farmers' vulnerability and adaptive capacity to climate change. The assessments are based on downscaled climate change scenarios and interviews with local farmers in the three northernmost counties in Northern Norway (latitude 65.5° to 70°). The study shows that the farmers to a degree are vulnerable to a changing climate, not mainly because of the direct effects of changing growing conditions, but because these changes are an added factor to an already tenuous situation created by Norwegian agricultural policy and socio-economic development in general. We have found that farmers are highly adaptive, to both changing growing conditions and changing agricultural policies. However, changes in policy are currently a greater challenge to farmers than climate change, and such changes are therefore a more salient driver of vulnerability.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
http://meetings.copernicus.org/egu2011 search: EGU2011-13794
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Sekhar Udaya Nagothu V. Geethalakshmi H. Annamalai A. Lakshmanan R. Srinivasan K. BhuvaneswariSammendrag
Det er ikke registrert sammendrag
Forfattere
Lillian ØygardenSammendrag
Det er ikke registrert sammendrag
Forfattere
Erlend Nybakk Pablo Crespell Eric N. HansenSammendrag
This study examines the relationships between firm financial performance and a) the climate for innovation and b) innovation strategy in the wood products industry. The focus is on the moderator effects of firm size, country of operation, and industry sector. Using a sample of 460 responses from chief executive officers and top managers of Norwegian and US firms, we conducted a regression analysis to probe for interaction effects. The sample included primary and secondary manufacturers of various sizes. Consistent with previous studies, we found a positive impact for both a climate for innovation and an innovation strategy on firm performance. In terms of moderation, only one interaction was found to be significant, representing a moderator effect of industry × size on the climate-performance relationship. Further testing showed that secondary, large manufacturers exhibited a weaker, yet still positive, relationship between climate for innovation and performance. This low level of significant interactions suggests stability of the relationship among the main factors depicted in the model, with important implications for managers and future research. These findings indicate that a positive climate for innovation and a management committed to innovation through an innovation strategy have a positive effect on the bottom line of wood products firms. This effect holds true regardless of industry, size, or country, so most firms can benefit from the implementation of these pro-innovation practices.
Sammendrag
Det er ikke registrert sammendrag