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
Ingeborg KlingenSammendrag
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Forfattere
Ingeborg KlingenSammendrag
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Forfattere
Ingeborg KlingenSammendrag
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Forfattere
Christer MagnussonSammendrag
The capacity for research and services in Plant Nematology has decreased much in the last 20 years. This is happening world wide and in the Nordic region the staff in Nematology has been reduced by 2/3 since 1994. We have already entered a situation where the capacity in most countries is insufficient to meet actual needs for research and development, as well as the needs for diagnostic services. Today the critical mass of the Nordic region is dangerously low. The scientific support required in decision making demonstrates a need to ensure the engagement of a sufficient number of nematologists. The present decrease in lecturing and training activities threatens recruitment and development. This situation can only be solved by an increase in research collaboration between Nordic countries.
Forfattere
Christer MagnussonSammendrag
Det er ikke registrert sammendrag
Forfattere
Christer MagnussonSammendrag
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Forfattere
Christer MagnussonSammendrag
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Forfattere
Christer MagnussonSammendrag
In the Nordic countries the total forest area is 67 million hectars, with conifers covering 38 milllion hectars. The Nordic standing crop of conifer wood is about 5 million m3, with an almost equal share of pine (Pinus sylvestris) and spruce (Picea abies). Because of this large and precious forest resource, the recent spread of pinewood nematode (PWN) Bursaphelenchus xylophilus in Europe is of great concern to Nordic countries. The expression of pine wilt disease requires summer temperatures higher than normal for Scandinavia. However, in the area of the recent outbreak in Galicia in Spain, temperatures seem modest, with mean values for July and August at or just above 20oC. Climate change may push the Nordic area into warmer conditions. Available models suggest that damage to Nordic forests is expected to be small in a 50 years perspective. Long-term models are scarce, but in view of pine tree production cycles of up to 120 years, mortality may occur more frequently within one or a few forest generations. Since PWN may exist in trees free of wilt symptoms its distribution in Europe becomes unclear. Monitoring of the pest in Nordic forests requires sampling of cutting waste with signs of activity from vector insect in the genus Monochamus. In the Nordic area more than 9000 samples have so far been analyzed from risk areas and risk commodities. A recent simulation PWN spread in Norwegian forests indicates that 14 years may elapse before detection by the present level of 400 samples annually. We are convinced that large sampling volumes and strict import regulations are vital strategies for keeping the Nordic area free from PWN.
Forfattere
Geir Kjølberg Knudsen Anders AakSammendrag
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Sammendrag
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