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.
2006
Sammendrag
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Sammendrag
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Forfattere
Volkmar TimmermannSammendrag
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Sammendrag
In this study, forest treated with different strengths of selective cutting (2570 % of volume removed) was remeasured after twelve years in 2005. At each of the sixteen 0.2 ha plots, including four repeats of each treatment, all trees larger than dbh 2.5 cm were calipered. We investigated growth, changes in stand structure, tree age, tree damage and crown condition.The diameter distribution displayed a reverse J-curve at all plots both before and after the cuttings. Twelve years later the curve is only slightly changed. Increment cores from 300 trees were taken to analyse annual growth reactions in different diameter classes. Most trees reacted with increased growth from the second or third year after the cutting.This improved growth accelerated the following six or seven years with 20-80% increase. Both small and large trees reacted, including severely suppressed trees. The initial crown volume and crown vitality after cutting is essential for the increased growth since several years are necessary to build up a larger and better crown. The relationship between increased growth and reduced volume per hectare indicates less competition between trees regarding nutrients and light after the cutting.
Sammendrag
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Sammendrag
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Forfattere
Kjell Mangerud Lars Olav Brandsæter Svein Magne Birkenes Birgitte Henriksen Richard Meadow Theo Ruissen Reidar Holmøy Helge Sjursen Guro BarstadSammendrag
Utgitt av Gan Forlag AS, Oslo. Øvrige bidragsytere: Richardo Holgado, Bonsak Hammeraas, Linnea Wang, Jan Netland, Gunn Mari Strømeng, Linda Gordon Hjeljord, Ingeborg Klingen, Solveig Haukeland, Trond Hofsvang, Atle Wibe, Sverre Kobra og Guro Brodal.
Sammendrag
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Forfattere
Anna Holefors Anne Katrine Ree Rosnes Lars Morten Opseth Carl Gunnar Fossdal Jorunn Elisabeth OlsenSammendrag
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Sammendrag
The life-cycle, overwintering stategy and control of Arion lusitanicus in Norway is documented and discussed.