Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2013
Abstract
The distribution of Leiopus nebulosus (Linnaeus, 1758) and L. linnei Wallin, Nylander & Kvamme, 2009, in Norway is discussed and depicted. Observations of host trees as well as information of substrate qualities and phenology are included.
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Authors
Ermias Deribe Bjørn Olav Rosseland Reidar Borgstrøm Brit Salbu Zinabu Gebremariam Elias Dadebo Lindis Skipperud Ole Martin EkloAbstract
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Authors
Pierre Ackerman Bruce Talbot Bo DahlinAbstract
This chapter provides an introduction into the harvesting and supply of biomass from timber plantations. It considers the main sources of utilizable biomass and their properties and discusses harvesting equipment, machinery and systems that could potentially be applied for moving these resources to a landing and eventually the conversion plant. Important supply processes such as storage and drying, quality assurance, transport and simple trade models are also presented. Management of feedstock supply is discussed and illustrated with two examples integrating concepts included in this chapter. This chapter will provide the reader with an overview of the techno-economic factors to be considered for biomass procurement, how these interact with each other, and how they can be applied in developing supply models to provide strategic insight into the harvesting and transport of woody biomass.
Authors
Hege Johansen Marit Solum Geir Kjølberg Knudsen Eline Benestad Hågvar Hans Ragnar Norli Anders AakAbstract
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Authors
Åsmund Asdal Jade V. Phillips Nigel MaxtedAbstract
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Authors
Chuan Li Heidi Rudi Eric J. Stockinger Hongmei Cheng Moju Cao Samuel E. Fox Todd C. Mockler Bjørge Westereng Siri Fjellheim Mats Höglind Odd Arne Rognli Simen Rød SandveAbstract
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Authors
Paolo Capretti Alberto Santini Halvor SolheimAbstract
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Authors
Tor Myking Erling Johan Solberg Gunnar Austrheim James David Mervyn Speed Fredrik Bøhler Rasmus Astrup Rune EriksenAbstract
Sallow (Salix caprea L.) and rowan (Sorbus aucuparia L.) constitute small proportions of the deciduous tree volume in Scandinavia, but are highly preferred winter forage for moose and red deer, which occur at historically high densities. Thus, a possible decline of these tree species has been indicated. Against this background, we have reviewed the life histories of relevance for browsing, as well as the basic biology and genetics of sallow and rowan. The species show similarities with respect to short lifespan, small size and sympodial growth pattern, which are risk factors in a browsing context. They also have high juvenile growth rate, important for growing quickly out of reach of browsers. Sallow depends strongly on disturbance for establishment and is more demanding with respect to soil and light conditions than rowan, possibly important for the substantially lower abundance of sallow on the Norwegian Forest Inventory plots. Similarly, the relative recruitment of small size classes of sallow is less than for rowan. Although recruitment is reported to be hampered in wintering areas with high moose or red deer densities, the inventory data, however, dating only back to 1994, do not suggest a general decrease in any of the species. Sallow and rowan saplings show low mortality in moose and deer dominated areas and the species can be characterised as rather resilient to browsing. Of more concern is that browsing can constrain the development of mature rowan and sallow trees locally, with possible consequences for associated epiphytic biodiversity.