Academic – A comparative study of Food values between the United States and Norway
Claudia Bazzani, Geir Wæhler Gustavsen, Rodolfo M. Jr. Nayga, ...
Academic – A comparison of two methods of data collection for modelling productivity of harvesters: manual time study and follow-up study using on-board-computer stem records
Julia Brewer, Bruce Talbot, Helmer Belbo, ...
Academic – A mathematical model for infrastructure investments in the forest sector of coastal Norway
Truls Flatberg, Vibeke Stærkebye Nørstebø, Knut Bjørkelo, ...
Academic – A preliminary study on the genetic structure of Northern European Pinus sylvestris L. by means of neutral nuclear microsatellite markers
Katrin Zimmer, Jørn Henrik Sønstebø
Academic – Accelerated increase in plant species richness on mountain summits is linked to warming
Manuel J. Steinbauer, John-Arvid Grytnes, Gerald Jurasinski, ...
Lecture – Active wildlife adventures – guidelines in a changing world
Hallvard Jensen, Paul Eric Aspholm, Bjørn Frantzen, ...
No abstract has been registered
Academic – Adaptive biodiversity management of semi-natural hay meadows: The case of West-Norway
Sølvi Wehn, Rob J.F. Burton, Mark Riley, ...
Worldwide semi-natural habitats of high biological value are in decline. Consequently, numerous AgriEnvironment Schemes (AESs) intended to halt biodiversity loss within these habitats have been implemented. One approach has been the application of “adaptive management”, where scientific knowledge is applied alongside the traditional ecological knowledge (TEK) of stakeholders in order to establish an integrated approach that is adjusted as outcomes are assessed. In this paper we examine the effectiveness of the adaptive management approach of Norway’s Action Plan for Hay Meadows (APHM). Twenty-nine hay meadows from fourteen farms in the county of Møre og Romsdal were ecologically surveyed over a 2 year period. Interviews were also conducted with owners and land managers to explore TEK and management issues. The interdisciplinary study found that the disembedding of hay meadow management from its initial commercial purpose (in particular the loss of much of the livestock from the region) has contributed to a significant loss of TEK – which is now largely limited to knowledge of how the fields were managed recently. While, the APHM is limiting biodiversity decline by promoting traditional practices there were indications that the standardisation of management actions might negatively affect species composition in the long term. More critically, continued farm abandonment within the region means that without alternatives to management by farmers many of these meadows are likely to disappear in the next couple of decades. We conclude that adaptive management provides an effective short-term means of preserving hay meadows, but long term conservation will require a means of addressing the continued decline of local farming communities.
Academic – An operational UAV-based approach for stand-level assessment of soil disturbance after forest harvesting
Bruce Talbot, Johannes Rahlf, Rasmus Astrup
The effectiveness of generating virtual transects on unmanned aerial vehicle-derived orthomosaics was evaluated in estimating the extent of soil disturbance by severity class. Combinations of 4 transect lengths (5–50 m) and five sampling intensities (1–20 transects per ha) were used in assessing traffic intensity and the severity of soil disturbance on six post-harvest, cut-to-length (CTL) clearfell sites. In total, 15% of the 33 ha studied showed some trace of vehicle traffic. Of this, 63% of was categorized as light (no visible surface disturbance). Traffic intensity varied from 787 to 1256 m ha−1, with a weighted mean of 956 m ha−1, approximately twice the geometrical minimum achievable with CTL technology under perfect conditions. An overall weighted mean of 4.7% of the total site area was compromised by severe rutting. A high sampling intensity, increasing with decreasing incidence of soil disturbance, is required if mean estimation error is to be kept below 20%. The paper presents a methodology that can be generally applied in forest management or in similar land-use evaluations.
Abstract – Analyzing long-term streamwater chemistry with complexity measures
Holger Lange, Sebastian Sippel, Britta Aufgebauer, ...
No abstract has been registered