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.
2023
Forfattere
Christian PedersenSammendrag
Det er ikke registrert sammendrag
Forfattere
Eric Post Elina Kaarlejärvi Marc Macias-Fauria David A. Watts Pernille Sporon Bøving Sean M. P. Cahoon R. Conor Higgins Christian John Jeffrey T. Kerby Christian Pedersen Mason Post Patrick F. SullivanSammendrag
Biodiversity is declining globally in response to multiple human stressors, including climate forcing. Nonetheless, local diversity trends are inconsistent in some taxa, obscuring contributions of local processes to global patterns. Arctic tundra diversity, including plants, fungi, and lichens, declined during a 15-year experiment that combined warming with exclusion of large herbivores known to influence tundra vegetation composition. Tundra diversity declined regardless of experimental treatment, as background growing season temperatures rose with sea ice loss. However, diversity declined slower with large herbivores than without them. This difference was associated with an increase in effective diversity of large herbivores as formerly abundant caribou declined and muskoxen increased. Efforts that promote herbivore diversity, such as rewilding, may help mitigate impacts of warming on tundra diversity.
Forfattere
Christian PedersenSammendrag
Det er ikke registrert sammendrag
Forfattere
Christian PedersenSammendrag
Det er ikke registrert sammendrag
Forfattere
Adam Eindride Naas Anders Bryn Rune Halvorsen Peter Horvath Lasse Torben Keetz Ida Marielle Mienna Trond SimensenSammendrag
Det er ikke registrert sammendrag
Forfattere
Adam Eindride Naas Rune Halvorsen Peter Horvath Anders Kvalvåg Wollan Harald Bratli Katrine Marie Brynildsrud Eirik Aasmo Finne Lasse Torben Keetz Eva Lieungh Christine Olson Trond Simensen Olav Skarpaas Hilde R. Tandstad Michal Torma Espen Sommer Værland Anders BrynSammendrag
Det er ikke registrert sammendrag
Forfattere
Anders BrynSammendrag
Det er ikke registrert sammendrag
Forfattere
Adam Eindride Naas Rune Halvorsen Peter Horvath Anders Kvalvåg Wollan Harald Bratli Katrine Marie Brynildsrud Eirik Aasmo Finne Lasse Torben Keetz Eva Lieungh Christine Olson Trond Simensen Olav Skarpaas Hilde Tandstad Michal Torma Espen Sommer Værland Anders BrynSammendrag
Questions Field-based ecosystem mapping is prone to observer bias, typically resulting in a mismatch between maps made by different mappers, that is, inconsistency. Experimental studies testing the influence of site, mapping scale, and differences in experience level on inconsistency in field-based ecosystem mapping are lacking. Here, we study how inconsistencies in field-based ecosystem maps depend on these factors. Location Iškoras and Guollemuorsuolu, northeastern Norway, and Landsvik and Lygra, western Norway. Methods In a balanced experiment, four sites were field-mapped wall-to-wall to scales 1:5000 and 1:20,000 by 12 mappers, representing three experience levels. Thematic inconsistency was calculated by overlay analysis of map pairs from the same site, mapped to the same scale. We tested for significant differences between sites, scales, and experience-level groups. Principal components analysis was used in an analysis of additional map inconsistencies and their relationships with site, scale and differences in experience level and time consumption were analysed with redundancy analysis. Results On average, thematic inconsistency was 51%. The most important predictor for thematic inconsistency, and for all map inconsistencies, was site. Scale and its interaction with site predicted map inconsistencies, but only the latter were important for thematic inconsistency. The only experience-level group that differed significantly from the mean thematic inconsistency was that of the most experienced mappers, with nine percentage points. Experience had no significant effect on map inconsistency as a whole. Conclusion Thematic inconsistency was high for all but the dominant thematic units, with potentially adverse consequences for mapping ecosystems that are fragmented or have low coverage. Interactions between site and mapping system properties are considered the main reasons why no relationships between scale and thematic inconsistency were observed. More controlled experiments are needed to quantify the effect of other factors on inconsistency in field-based mapping.
Sammendrag
Rapporten er utarbeidet som en kortversjon av revidert NIBIO rapport 105/2023, «Kunnskapsgrunnlag for jordvernstrategi i Follo-kommunene». Den omhandler jordas og jordbruksarealenes betydning i samfunnet og beskriver jordbruket i Follo-regionen, samt fordeling av jordbruksarealene og utviklingstrekk knyttet til disse. Videre beskrives årsaker til omdisponering og ulike virkemidler for jordvern i kommunene.
Sammendrag
Rapporten er skrevet for å gi et best mulig kunnskapsgrunnlag for arbeid med jordvernstrategier i Follo-kommunene. Den omhandler jordas og jordbruksarealenes betydning i samfunnet og beskriver jordbruket i Follo-regionen, samt fordeling av jordbruksarealene og utviklingstrekk knyttet til disse. Videre beskrives årsaker til omdisponering og ulike virkemidler for jordvern i kommunene.