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.
2005
Sammendrag
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Redaktører
Kåre HobbelstadSammendrag
SNS-meeting 2004 in Nordic Forest Inventory was held at Sjusjøen, Norway, September 6-8, 2004. This publication is a collection of all the subjects dealt with at the meeting. The articles are written by the speakers on the meeting. The subjects were country and team reports, lidar measurements in forest inventory, national forest inventory, remote sensing studies, forest planning and current topics in forest modelling.
Forfattere
Per Holm NygaardSammendrag
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Forfattere
Halvor SolheimSammendrag
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Sammendrag
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Sammendrag
We investigate ecosystem dynamics by analyzing time series of measured variables. The information content and the complexity of these data are quantifed by methods from information theory.When applied to runoff (stream discharge) from catchments, the information/complexity relation reveals a simple non-trivial property for a large ensemble (more than 1800) of time series. This behaviour is so far not understood in hydrology.Using a multi-agent network receiving input resembling rainfall and producing output, we are able to reproduce the observed behaviour for the first time. The reconstruction is based on the identification and subsequent replacement of general patterns in the input. We thus consider runoff dynamics as the expression of an interactive learning problem of agents in an ecosystem.
Forfattere
Jolanda Roux Halvor Solheim Michael J. WingfieldSammendrag
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Forfattere
Dan AamlidSammendrag
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Forfattere
Kjell AndreassenSammendrag
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Forfattere
Lisbeth Mehli Trygve D. Kjellsen Frances M. Dewey Ari M. HietalaSammendrag
Strawberry Fragariax ananassa (cv. Korona) was inoculated with Botrytis cinerea by dipping berries in a conidial suspension. The colonization of the pathogen was monitored with real-time PCR, ELISA and ergosterol assays, the first showing the highest sensitivity. The expression of pathogen -tubulin and six polygalacturonases (Bcpg1-6) and three host defense genes (polygalacturonase inhibiting protein (FaPGIP) and two class II chitinases) were monitored with real-time RT-PCR. The maximum transcript levels of the host defense genes occurred at 16 hours post inoculation (hpi), at the presumed initial penetration stage.The unique transcript profile of Bcpg2 over the 96-hour-long incubation time and its high transcript levels relative to those of the other Bcpgs at 8 to 24 hpi suggest that the gene has a specific role in the penetration stage.Bcpg1 was constitutively expressed at a relatively high level in actively growing mycelia throughout the experimental period. Comparison of the transcript profiles indicated that Bcpg1 and Bcpg3-6 were co-ordinately regulated.