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.
2012
Authors
Alena Gibalova Eivind Vangdal Per gustav anders Leufvén,Abstract
The flavor of apples after storage is important to the consumers. Most often factors like decay, firmness and the contents of soluble solids and acidity are regarded as the limiting factors for storability of apples. The amount of volatile aroma compounds is less studied. Using head space analyses the amounts of 8 compounds known to be important to aroma of apples were studied during storage. Some compounds increased while others decreased during storage. Apples of three cultivars and from trees treated with foliar fertilization with nitrogen and calcium were included. The early ripening cultivar ‘Discovery’ had more aroma compounds in November and less in February. In the late ripening cultivar ‘Elstar’ the content of aroma compounds was low in November. However, the amounts were more than doubled in February. The foliar fertilization with nitrogen tended to reduce the amount of aroma compounds while the highest content was found in apples from trees treated with calcium. However, these tendencies were not statistically significant. In ‘Discovery’ the content of aroma compounds may be a limiting factor to the storability of this cultivar.
Abstract
No abstract has been registered
Authors
Richard Bischof Leif Egil Loe Erling Meisingset Barbara Zimmermann Bram F. A. Van Moorter Atle MysterudAbstract
The forage-maturation hypothesis (FMH) states that herbivores migrate along a phenological gradient of plant development in order to maximize energy intake. Despite strong support for the FMH, the actual relationship between plant phenology and ungulate movement has remained enigmatic. We linked plant phenology (MODIS–normalized difference vegetation index [NDVI] data) and space use of 167 migratory and 78 resident red deer (Cervus elaphus), using a space-time-time matrix of “springness,” defined as the instantaneous rate of green-up. Consistent with the FMH, migrants experienced substantially greater access to early plant phenology than did residents. Deer were also more likely to migrate in areas where migration led to greater gains in springness. Rather than “surfing the green wave” during migration, migratory red deer moved rapidly from the winter to the summer range, thereby “jumping the green wave.” However, migrants and, to a lesser degree, residents did track phenological green-up through parts of the growing season by making smaller-scale adjustments in habitat use. Despite pronounced differences in their life histories, we found only marginal differences between male and female red deer in this study. Those differences that we did detect pointed toward additional constraints on female space-use tactics, such as those posed by calving and caring for dependent offspring. We conclude that whereas in some systems migration itself is a way to surf the green wave, in others it may simply be a means to reconnect with phenological spring at the summer range. In the light of ubiquitous anthropogenic environmental change, understanding the relationship between the green wave and ungulate space use has important consequences for the management and conservation of migratory ungulates and the phenomenon of migration itself. © 2012 by The University of Chicago.
Abstract
No abstract has been registered
Authors
Harri Kaartinen Juha Hyyppa Xiaowei Yu Mikko Vastaranta Hannu Hyyppa Antero Kukko Markus Holopainen Christian Heipke Manuela Hirschmugl Felix Morsdorf Erik Næsset Juho Pitkanen Sorin Popescu Svein Solberg Bernd Michael Wolf Jee-Cheng WuAbstract
No abstract has been registered
Authors
Oddmund Kleven Björn M. Hallström Frank Hailer Axel Janke Snorre Hagen Alexander Kopatz Hans Geir EikenAbstract
No abstract has been registered
Authors
Apolline Auclerc Johanne Nahmani Delphine Aran Virgine Baldy Henry Callot Charles Gers Etienne Iorio Emmanuel Lapied Aurore Lassauce Alain Pasquet Jörg. Spelda Jean-Pierre Rossi Francois GueroldAbstract
No abstract has been registered
Authors
Arild AndersenAbstract
The present paper comments on thirty-three of the forty-seven species belonging to six Agromyzidae genera and presently known to occur in Norway. Thirteen species are reported new to the Norwegian fauna belonging to the family Agromyzidae. The species are: Amauromyza (Cephalomyza) chenopodivora Spencer, 1971, Amauromyza (Cephalomyza) monfalconensis (Strobl, 1909), Cerodontha (Butomomyza) rohdendorfi Nowakowski, 1967, Cerodontha (Butomomyza) scutellaris (Roser, 1840), Cerodontha (Cerodontha) fulvipes (Meigen, 1830), Cerodontha (Cerodontha) stackelbergi Nowakowski, 1972, Cerodontha (Dizygomyza) caricicola (Hering, 1926), Cerodontha (Icteromyza) capitata (Zetterstedt, 1848), Cerodontha (Poemyza) pygmina (Hendel, 1931), Metopomyza flavonotata (Haliday, 1833), Metopomyza scutellata (Fallen, 1823), Metopomyza xanthaspioides (Frey, 1946) and Aulenagromyza buhri (de Meijere, 1938). In addition new regional data is given for twenty species previously reported from Norway. The biology of the larva, when known, and the distribution in Norway and Europe are commented on for each of the species.
Authors
Signe Kynding Borgen Hanne Lunde Weichel Lars Bakken Marina Azzaroli Bleken Tor Arvid BrelandAbstract
No abstract has been registered
Authors
Klaus Mittenzwei David S. Bullock Klaus SalhoferAbstract
No abstract has been registered