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environmental variables are estimated and then applied to fossil assemblages under the assumption Plant and animal remains are often found well that the biota is in equilibrium with concurring preserved and in large quantities as fossils in lake environmental conditions. We have used fossil pollen sedimentary deposits. The composition of the fossil assemblages to reconstruct changes in past mean July assemblages, the biological proxies, can be used to air temperatures and changes in mean annual prec- infer environmental conditions at the time of de- itation (Birks & Birks, 2003). Plant…mehr

Produktbeschreibung
environmental variables are estimated and then applied to fossil assemblages under the assumption Plant and animal remains are often found well that the biota is in equilibrium with concurring preserved and in large quantities as fossils in lake environmental conditions. We have used fossil pollen sedimentary deposits. The composition of the fossil assemblages to reconstruct changes in past mean July assemblages, the biological proxies, can be used to air temperatures and changes in mean annual prec- infer environmental conditions at the time of de- itation (Birks & Birks, 2003). Plant macrofossils were sition. This is based on the uniformitarian assumption used to con?rm and to give more robust interpre- that particular species assemblages of the past have tions about past vegetation and climate than the been shaped by speci?c sets of environmental pollen evidence alone (Birks & Birks, 2000) and has conditions, and that these conditions are re?ected been widely used to con?rm the local presence of tree by the same species assemblages today (Rymer, species in studies of past tree-lines (Barnekow, 2000; 1978; Birks & Birks, 1980). Different proxies used to Bjune, 2005; Eide et al. , 2006). Chironomids (n- reconstruct past environmental conditions have in- biting midges) were used to infer past mean July air vidual strengths and weaknesses.

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  • Produktdetails
  • Verlag: Springer-Verlag GmbH
  • Seitenzahl: 126
  • Erscheinungstermin: 21. März 2015
  • Englisch
  • ISBN-13: 9789048193882
  • Artikelnr.: 44228110
Inhaltsangabe
PrefaceJohn E. Brittain and Reidar BorgstrømThe Norwegian reference lake ecosystem, Øvre HeimdalsvatnJohn E. Brittain and Reidar BorgstrømHolocene climate and environmental history of Brurskardstjørni, a lake in the catchment of Øvre Heimdalsvatn, south-central NorwayGaute Velle, Anne E. Bjune, Jorunn Larsen and H. John B. BirksThe development of new algorithms for remote sensing of snow conditions based on data from the catchment of Øvre Heimdalsvatn and the vicinityRune Solberg, Hans Koren, Jostein Amlien, Eirik Malnes, Dagrun Vikhamar Schuler and Nils Kristian OrtheLong-term trends in water temperature and ice cover in the subalpine lake, Øvre Heimdalsvatn, and nearby lakes and riversÅnund Sigurd Kvambekk and Kjetil MelvoldBetween-year variations in the development of crustacean zooplankton in the Norwegian subalpine lake, Øvre HeimdalsvatnPetter Larsson, Heidi Hansen and Linda Kristin Bjørnstad HellandLong-term changes in the littoral benthos of a Norwegian subalpine lake following the introduction of the European minnow (Phoxinus phoxinus)Frode Næstad and John E. BrittainThe brown trout (Salmo trutta) in the lake, Øvre Heimdalsvatn: long-term changes in population dynamics due to exploitation and the invasive species, European minnow (Phoxinus phoxinus)Reidar Borgstrøm, Jon Museth and John E. BrittainDiet overlap between introduced European minnow (Phoxinus phoxinus) and young brown trout (Salmo trutta) in the lake, Øvre Heimdalsvatn: a result of abundant resources or forced niche overlap?Jon Museth, Reidar Borgstrøm and John E. BrittainA long-term study of catchment inputs of 137Cs to a subalpine lake in the form of allochthonous terrestrial plant materialJohn E. Brittain and Helge E. BjørnstadLong-term trends and variation in 137Cs activity concentrations in brown trout (Salmo trutta) from Øvre Heimdalsvatn, a Norwegian subalpine lakeJohn E. Brittain and Jan Egil GjersethThe importance ofsize and growth rate in determining mercury concentrations in European minnow (Phoxinus phoxinus) and brown trout (Salmo trutta) in the subalpine lake, Øvre HeimdalsvatnMarthe T. Solhaug Jenssen, Reidar Borgstrøm, Brit Salbu and Bjørn Olav Rosseland