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.
2017
Abstract
Semi-natural grasslands are in decline due to land use changes. To conserve grassland ecosystems, agrienvironmental schemes facilitate low intensity management of semi-natural grasslands of high nature value. In addition to management of the meadows themselves, the nature value of the hay meadows also depends upon the surrounding landscape. The aim of this study was to assess the importance of the landscape on the biological value of semi-natural hay meadows implemented in the Action Plan for Hay Meadows (APHM) in Norway. The biological value was estimated by richness of all vascular plant species and of vascular plant species associated with semi-natural grassland. Richness was high in semi-natural grasslands, particularly in hay meadows implemented in the APHM. However, the landscape context also influenced the richness of the hay meadows. Species richness increased with hay meadow area and length and edge density of semi-natural habitats types in the landscapes.
Authors
Line Johansen T. Lennartsson Anna Westin A. Iuga C.M. Ivascu Eveliina Kallioniemi Sølvi WehnAbstract
No abstract has been registered
Authors
Line Johansen T. Lennartsson Anna Westin A. Iuga C.M. Ivascu Eveliina Kallioniemi Sølvi WehnAbstract
Semi-natural grasslands are important habitats for pollinators because of high abundance of flowering plants. The aim of this study was to assess effects of mowing time on flower resources for pollinators in semi-natural hay meadows. Flowering species in semi-natural hay meadows throughout a landscape in Maramures, Romania were used as indicators of flower resources for pollinators. Botanical surveys were performed in 31 hay meadows and all herbs and shrubs were recorded in hay meadows cut early, intermediate and late in the growing season. All hay meadows included a high number of flower species but the mowing time influenced the available floral resources for pollinators. If mowing time varies between hay meadows within a landscape, flower resources for pollinators will be available throughout the growing season, which is essential in pollination conservation in agricultural landscapes.
Abstract
No abstract has been registered
Authors
Mette ThomsenAbstract
No abstract has been registered
Authors
Mette ThomsenAbstract
No abstract has been registered
Abstract
Aims: Evaluate biological nitrogen fixation (BNF) and its contribution to total N yield in different grass-clover mixtures under a boreal coastal climate and assess how winter conditions affect the survival of clover and its capability to fix nitrogen (N). Methods: Grass-clover mixtures sown with 0, 15 and 30% red and white clover were subjected to two N rates and three levels of tractor trafficking over four years. BNF was estimated by N-difference for each of the two harvests per year, whereas the first harvest was used to estimate the fraction of N derived from the atmosphere (NdfA) and its transfer to grasses by 15N natural abundance. Results: Biological N fixation, mainly by red clover, contributed substantially to total N yield, which was up to 75% greater in grass-clover mixtures than in pure grass stands in the second production year. However, the number of red clover plants and associated BNF decreased dramatically in the third and fourth production year, with N fertilization rate having a more detrimental effect than soil trafficking. Conversely, the amount of biologically fixed N transferred to grass, increased with time, evidencing that some of the biologically fixed N is retained in the system. In the first harvests, NdfA values were generally between 80 and 100%, irrespective of preceding winter conditions. Conclusions: BNF in high latitude grass-clover mixtures can be substantial but is limited by the poor survival of red clover. Variable winter conditions had no measurable effect on winter survival nor on the sward’s capacity to fix nitrogen in spring.
Authors
Tatjana Kince Ruta Galoburda Dace Klava Lolita Tomsone Santa Senhofa Evita Straumite Garry Kerch Arta Kronberga Ievina Sturite Daiga Kunkulberga Anita BlijaAbstract
The aim of the study was to investigate changes of physical, microbiological, and sensory properties of muesli with germinated fakes during storage. Germinated fakes were made from conventionally grown grains: hullless barley, hull-less oat, rye, wheat, and triticale in various proportions. Breakfast cereals samples were packaged in Doypack (stand up pouches) made from Pap50g/Alu7/ Pe60 (Pap/Alu/PE) and stand up pouches Fibrecote® HB MG 40/60 (PE/EvOH/Pap) and stored for 6 months at temperature t=35±2°C and relative air humidity φ=55±3%, to provide accelerated shelf-life testing. The main quality parameters such as total plate count, yeasts and mould, water activity, moisture content, water absorption and sensory properties—taste, aroma, consistency, and appearance were analysed using the standard methods. The results of the present experiments demonstrate that the best quality of dried breakfast cereals after storage in terms of sensory quality, microbiological stability, moisture migration, and water absorption were achieved in the Fibrecote® HB MG 40/60 pouches. This study revealed that breakfast cereals made from rye, triticale germinated triticale, germinated hull-less oat, germinated hull-less barley fakes; as well breakfast cereals made from triticale, oat, germinated wheat, germinated triticale, and germinated hull-less barley fakes packaged in Fibrecote® HB MG 40/60 can be stored for 12 months at temperature 23±2°C; but breakfast cereals made from wheat, rye, triticale, germinated hull-less oat, germinated hull-less barley, germinated rye fakes and package in same packaging material can be stored for 10 months at temperature 23±2°C.
Abstract
No abstract has been registered
Authors
Ievina SturiteAbstract
No abstract has been registered