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.
2003
Forfattere
Knut Rydgren Rune H. Økland Tonje ØklandSammendrag
Det er ikke registrert sammendrag
Forfattere
Rune H. Økland Knut Rydgren Tonje ØklandSammendrag
Previous studies point at biogeographic (i.e. evolutionary and demographic) and ecological (i.e. habitat differentiation and disturbance) processes as the most important causes of spatial variation in species richness and species composition. We examined patterns of variation in similarity of vascular plant and bryophyte species composition among 150 1-m2 plots distributed semi-randomly over 11 Norwegian boreal swamp-forest localities that were species-rich islands in an otherwise species-poor forest landscape. For each plot, 53 environmental variables were recorded. By using CCA analyses, we found that c. 20% of the explainable variation in species composition was due to swamp-forest affiliation, in addition to the c. 35% that was due to environmental differences between swamp-forest localities. The unique component of the species composition of each swamp forest was also emphasised by analyses of floristic dissimilarity: plots were significantly more floristically dissimilar if situated in different than if situated in the same swamp forest, even after environmental differences had been corrected for. The lack of any significant relationship between floristic dissimilarity and geographical distance or swamp-forest area indicated that this pattern was not mainly due to demographic processes. We argue that the floristic distinctness of swamp forests, in particular those richer in species and soil nutrients, is due to a combination of factors among which randomness in establishment in infrequently occurring gaps ( ‘windows of opportunity’) are likely to be important. The unique combination of important determinants of the species composition found for boreal swamp forests supports the view that there exists a diversity of explanations for diversity and that these, to a large extent, are system- and/or area-specific.
Forfattere
Tonje Økland Knut Rydgren Rune H. Økland Ken Olaf Storaunet Jørund RolstadSammendrag
Det er ikke registrert sammendrag
Forfattere
Geir-Harald StrandSammendrag
Det er ikke registrert sammendrag
Forfattere
Arne Sandnes Toril Drabløs EldhusetSammendrag
Det er ikke registrert sammendrag
2002
Forfattere
Ole Martin Eklo Jens Kværner Eivind Solbakken Ivar Solberg Stein SorknesSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Gro Hylen John Y. LarssonSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Vibeke LindSammendrag
Det er ikke registrert sammendrag