... to unravel the long and complicated convergent and collisional history of the Eurasian High Arctic. We are seeking a new understanding of the geodynamic evolution and, in this context, Taymyr and Severnaya Zemlya play a central role. ...
... ”Isayeva Line”, an ice-marginal zone formed by an ice-sheet spreading from the Kara Sea shelf and marking the last major glaciation of the Taymyr Peninsula, and to study its different stages and date them. In 1998 this ...
... natural resources in the polar regions is among the most ancient of human motives for finding the means and taking the risk of entering or moving permanently in to these harsh environments of the Earth. The hunting of sea and land ...
... crash. After such a crash the willow ramets have grown normally without browsing. This method is also good for checking the willow scar method explained above. Sex ratio variation of willows In almost all willow populations studied there ...
... patterns in the Norwegian lemmings, arguing that the rump gland in these animals produces a chemical deterrent, making it distasteful. This hypothesis was tested by Hansen (1993) for a number of predators (hawk owl (Surnia ulula), ...
... This is most likely du e to soil movements caused by permafrost and may cause the splitting up of litters, making litter size estimates difficult. Den structure was dependent on the geomorphology at each site. The data collected on ...
... area estimated using the grid-system on the maps. Maps of larger scale were used for site 6, Graham Gore Peninsula, King William Island, site 11, Cape Bathurst, Amundsen Gulf, site 15, between Muskox Fjord and Baad Fjord, Ellesmere Island, ...
... furthest to the south. In all, 11 sites were on islands in the Canadian Arctic Archipelago and 6 sites (including King William Island) on the mainland, and yet another site was on Greenland. Tuktoyaktuk, here Tuk, on the mainland of ...
... due to lack of time at the end of this leg and bad conditions for microscopic observation while the ship was icebreaking. Hence, only a small part of this investigation can be presented here. Mostly, the soils showed a dominance of small ...
... Sheffield Centre for Arctic Ecology Department of Animal and Plant Sciences, University of Sheffield United Kingdom *Not participating in the expedition
... ericaceous plants and herbs form mycorrhiza (ericoid- and arbuscular mycorrhiza, respectively) with fungi lacking sporocarps. The amount of energy, or assimilate from the photosynthesis, translocated to the mycorrhizal fungus from the ...
... Data on gene flow between populations that are based on mitochondrial DNA can also be correlated to a time scale, making it possible for us to estimate when different populations were isolated. Methods used in the field and on the ship We ...
... Water Research Bergen, Norway Principal investigator Lawrence J. Weider Biological Station, University of Oklahoma Kingston, USA References Colbourne, J.K., Crease, T.J., Weider, L.J., Hebert, P.D.N., Dufresne, F. and Hobæk. A, (1998). ...
... the genetic variation among these mainly sterile taxa. Other aims were to collect material for taxonomists working on different groups of lichens to increase the knowledge of the lichen vegetation in these poorly studied areas. A ...
... Science Svalöv, Sweden Principal investigator Lawrence J. Weider Biological Station, University of Oklahoma Kingston, USA Terry V. Callaghan* Sheffield Centre for Arctic Ecology Department of Animal and Plant Sciences, University of ...
... but also because of their efficient travel and orientation capacity under complex polar conditions. We used a tracking radar on board the Canadian Coast Guard icebreaker Louis S. St-Laurent to record bird migration at the various sites ...
... can still be due to a latitudinal effect but with the picture disrupted by the data from the southerly situated King William Island (69°N, 114°W) which is known for its harsh climate, as witnessed by historic expeditions which have often ...
... a bird on the nest, injecting a tiny amount of water with a particular ratio of stable isotopes of H and O, and taking a blood sample. The bird is then released. After 24h it is recaptured and a new blood sample is taken. From the ...
... bad weather. The temperature was around freezing and there was a strong wind. No butterflies or moths were seen. 7. King William Island, 20–21 July The site was located near the western tip of the island, on a flat limestone plateau at sea ...
... D. C. Emlen, S. T. (1975). Migration: orientation and navigation. In: Avian Biology, Vol. 5 D. S. Farner, D.S. and King, J . R. (ed.). New York, Academic Press 129-219. Emlen, S. T. and Emlen, J. T. (1966). A technique for recording ...
