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.
2016
Forfattere
Amy Eycott Patryk Czortek John-Arvid Grytnes Antoni Zieba Anna Delimat Jutta Kapfer Bogdan JaroszewiczSammendrag
Det er ikke registrert sammendrag
Sammendrag
Methods: In 2009, we resurveyed three plant sociological studies up to 85 years after the first surveys. Vegetation data were recorded from 1m2 non-permanently marked plots, and soil pH was measured. We applied restricted permutation tests to evaluate whether observed changes in vegetation (species richness, occurrence frequency, coverage) and in soil pH were significant and independent of plant community type. We compared species co-occurrences over time to study changes in species composition and to identify the species most likely causing these changes. Results: Total number of species and average number of species per plot has not changed and are 75 and 9, respectively. Occurrence frequency changed significantly for 34% of the 64 species tested (11 species increased, 11 decreased). Species cover decreased significantly for 27% of the species and increased for one species. Observed changes in frequency and cover are not significantly related with species’ functional groups or species affiliated with moist or dry habitats. Polygonum viviparum, Saxifraga cernua and Alopecurus borealis have changed most in co-occurring with other species. Soil pH increased significantly from 6.4 to 6.8. Conclusions: Our results suggest that the strong climatic warming in the High Arctic over the past decades has contributed to significant changes in the vegetation studied on Svalbard over the past 85 years. Internal community re-structuring and the overall stability in species richness may be explained by time-delayed responses of well-established communities, and/or by a limited size of the species pool in the area.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Sander Jacobs Nicolas Dendoncker Berta Martín-López David Nicholas Barton Erik Gomez-Baggethun Fanny Boeraeve Francesca L. McGrath Kati Vierikko Davide Geneletti Katharina J. Sevecke Nathalie Pipart Eeva Primmer Peter Mederly Stefan Schmidt Alexandra Aragão Himlal Baral Rosalind H. Bark Tania Briceno Delphine Brogna Pedro Cabral Rik De Vreese Camino Liquete Hannah Mueller Kelvin S.-H. Peh Anna Phelan Alexander R. Rincón Shannon H. Rogers Francis Turkelboom Wouter Van Reeth Boris T. van Zanten Hilde Karine Wam Carla-Leanne WashbournSammendrag
We are increasingly confronted with severe social and economic impacts of environmental degradation all over the world. From a valuation perspective, environmental problems and conflicts originate from trade-offs between values. The urgency and importance to integrate nature's diverse values in decisions and actions stand out more than ever. Valuation, in its broad sense of ‘assigning importance’, is inherently part of most decisions on natural resource and land use. Scholars from different traditions -while moving from heuristic interdisciplinary debate to applied transdisciplinary science- now acknowledge the need for combining multiple disciplines and methods to represent the diverse set of values of nature. This growing group of scientists and practitioners share the ambition to explore how combinations of ecological, socio-cultural and economic valuation tools can support real-life resource and land use decision-making. The current sustainability challenges and the ineffectiveness of single-value approaches to offer relief demonstrate that continuing along a single path is no option. We advocate for the adherence of a plural valuation culture and its establishment as a common practice, by contesting and complementing ineffective and discriminatory single-value approaches. In policy and decision contexts with a willingness to improve sustainability, integrated valuation approaches can be blended in existing processes, whereas in contexts of power asymmetries or environmental conflicts, integrated valuation can promote the inclusion of diverse values through action research and support the struggle for social and environmental justice. The special issue and this editorial synthesis paper bring together lessons from pioneer case studies and research papers, synthesizing main challenges and setting out priorities for the years to come for the field of integrated valuation.
Forfattere
Annika M. Felton Adam Felton Joris P. G. M. Cromsigt Lars Edenius Jonas Malmsten Hilde Karine WamSammendrag
People provide wild ungulates with large quantities of supplementary feed to improve their health and survival and reduce forest damage. Whereas supplementary feeding can positively affect the winter survival of ungulates and short-term hunting success, some of the feeds provided may actually reduce ungulate health and increase forest damage. Here, we highlight how recent advances in ungulate nutritional ecology can help explain why supplementary feeding can lead to undesirable outcomes. Using Europe’s largest cervid, the moose (Alces alces), as a model species, and Sweden, as the socio-ecological context, we explain the concept of nutritional balancing and its relevance to supplementary feeding. Nutritional balancing refers to how animals alter their food intake to achieve a specific nutritional target balance in their diet, by selecting balanced food items or by combining items with nutritional compositions that are complimentary. As the most common supplementary feeds used contain higher concentrations of non-structural carbohydrates than the ungulates’ normal winter diet, the consumption of such feeds may cause animals to increase their intake of woody browse, and thereby exacerbate forest damage. We also explain how animal health may be negatively affected by large intakes of such feed if complementary browse items are not available. We therefore suggest that the use of inappropriate feed is an additional means by which supplementary feeding may result in negative outcomes for hunters, forest owners, and wild animals.
Forfattere
Magne SætersdalSammendrag
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Sammendrag
The re-measurement of permanent forest inventories offers a unique opportunity to assess the occurrence and impact of forest disturbances. The present study aims at exploring the main forest damages in Norway based on the extensive data of several consecutive national forest inventories during the period 1995–2014. Five of the most common disturbance agents in Norway are selected for analysis: wind, snow, browsing, fungus and insect damage. The analyses focuses on the frequency and variation along time, the average damage at stand level and the spatial patterns of damage occurrence, resulting in a characterization of the damage produced by disturbances in Norway. The highest damage occurrences by disturbance agent are due to browsing, snow and wind. Snow presents a decreasing temporally trend in damage frequency in the studied period. By forest type, mature and intermediate birch forest are found to be more affected by snow damage, whereas mature spruce forest is by wind damage. The results from this study provide support to the hypothesis that damages by autumnal moth (Epirrita autumnata) on birch are more common in mature stands. No major attacks from bark beetle (Ips typographus) are found, probably related to the lack of major storm damages in the period. Forest types susceptibility to fungus has no apparent variation over time except in the last years, as increased occurrence is observed on mature spruce stands probably correlated with warmer than average periods. Browsing damage causes the most severe losses, as expected, in young stands, and is allocated mainly on the most productive forests. Although some of the disturbances present locally moderate effects, the results show no major disturbances threatening Norwegian forests in the studied period. Finally, the Norwegian national forest inventory demonstrates its reliability as a basis to understand the occurrence and effects of major natural disturbances.
Sammendrag
Takseringen av Hedmark i perioden 2010-2014 inngår som et ledd i Landsskogtakseringens landsomfattende takstomdrev. I perioden 2010-2014 ble Landsskogtakseringens 10. omdrev på landsbasis utført. Registreringene i Hedmark er basert på 2507 permanente prøveflater som er lagt ut over fylket i henhold til et bestemt system. Produktivt skogareal som kan anvendes til skogbruk er beregnet til 1 387 000 ha, noe som representerer en økning på ca. 4% siden taksten i 2000-2004. Økningen skyldes vesentlig at områder over barskoggrensa, som tidligere var unntatt fra taksering, nå er tatt med. Det stående volumet er beregnet til 151 mill m3 uten bark. Dette er en økning på ca. 20 % sammenliknet med forrige fylkestakst. Rapporten inneholder to ulike alternativer for langsiktige avvirkningsberegninger. Videre opptar det omfattende tabellverket en betydelig del av publikasjonen.
Sammendrag
Takseringen av Oppland i perioden 2010-2014 inngår som et ledd i Landsskogtakseringens landsomfattende takstomdrev. I perioden 2010-2014 ble Landsskogtakseringens 10. omdrev på landsbasis utført. Registreringene i Oppland er basert på 1836 permanente prøveflater som er lagt ut over fylket i henhold til et bestemt system. Produktivt skogareal som kan anvendes til skogbruk er beregnet til 816 000 ha, noe som representerer en økning på ca. 10% siden taksten i 2000-2004. Økningen skyldes vesentlig at områder over barskoggrensa, som tidligere var unntatt fra taksering, nå er tatt med. Det stående volumet er beregnet til 92 mill m3 uten bark. Dette er en økning på ca. 21 % sammenliknet med forrige fylkestakst. Rapporten inneholder to ulike alternativer for langsiktige avvirkningsberegninger. Videre opptar det omfattende tabellverket en betydelig del av publikasjonen.
Forfattere
Tor MykingSammendrag
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