Institutt for arktisk og marin biologi: Nye registreringer

Viser treff 2041-2045 av 2045

    • Nomadic pastoralism in the Aru basin of Tibet’s Chang Tang. 

      Lhagyal, Dondrup; Næss, Marius W.; Mathiesen, Per; Yangzom, Drolma; Fox, Joseph L.; Bårdsen, Bård J. (Journal article; Peer reviewed; Tidsskriftartikkel, 2004)
      Nomadic pastoralists live at the northern extent of human habitation within the ca. 5000 m elevation Aru basin, in the nortwestern part of the Chang Tang Nature Preserve, Tibet. These nomads herd primarily sheep and goats, a lesser number of yaks, and a few horses. Goats are increasing in importance because of the value of cashmere wool in national and international markets. Although sheep wool ...

    • Distribution of overwintering Calanus in the North Norwegian Sea. 

      Slagstad, D.; Edvardsen, A.; Semenova, T.; Pedersen, J.M.; Timonin, A. (Journal article; Peer reviewed; Tidsskriftartikkel, 2006-07-25)
      During winter 2003 and 2004, zooplankton and hydrographic data were collected in the northern parts of the Norwegian Sea (68–72º N, 8–17º E) west of the Norwegian shelf break at depths down to 1800 m. The results cover both inter and intra annual changes of hydrography and distribution of Calanus spp. For the whole survey area, average seawater temperature down to 1000mwas higher in 2004 than ...

    • The Importance of Morphological/Physiological Heterogeneity as Adaptive Strategies in Stocks of Common Northern/Arctic Phytoplankton Species with Special Focus on the Common Diatom Chaetoceros socialis 

      Donnelly, Kathryn Anne-Marie (Master thesis; Mastergradsoppgave, 2006-12-13)
      The cosmopolitan, centric diatom Chaetoceros socialis was investigated in terms of its validity as a single species characterized by its morphology, physiology and distribution. A database was constructed using my own and published literature distribution observations of C. socialis in Northern Norway, the Atlantic, Arctic and Barents Sea. From this range of observations, it is possible to establish ...

    • Variation in abundance, diet, otolith zone patterns and black spot disease (Cryptocotyle lingua) of 0-group coastal cod (Gadus morhua L.) in northern Norway 

      Sandneseng, Elida (Master thesis; Mastergradsoppgave, 2006-12-11)
      Knowledge of the early life-history and habitat requirements of coastal cod is very sparse. Young of the year cod juveniles from three different locations in northern Norway were collected monthly from August to November 2005 using beach seine. Diet analyses based on stomach contents showed that 0-group cod mainly ate copepods, gammarids, polychaetes, mysids, shrimps and isopods. The three ...

    • Reindeer grazing history effects on plant recruitment and life history traits from the germinable seed bank 

      Tevendale, Victoria González (Master thesis; Mastergradsoppgave, 2006-03-27)
      Seed banks represent a source from which new vegetation may quickly arise if the existing stand is disturbed. It is increasingly discussed that reindeer grazing modifies the seed banks in northern ecosystems. However no large-scale studies have been carried out to support this hypothesis. Because reindeer could constitute a selective pressure on vegetation recruitment, the present study investigated ...