Sökning: "Proxies"

Visar resultat 11 - 15 av 130 avhandlingar innehållade ordet Proxies.

  1. 11. Mended by masticates : A study of archaeogenetic proxies of migration, settlement and health in North Eurasian Mesolithic

    Författare :Natalija Kashuba; Anders Kaliff; Mattias Jakobsson; Torun Zachrisson; Tiina Maria Mattila; Lehti Saag; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Archaeogenetics; Mesolithic population genetics; human identity; post-LGM hunter-gatherer societies; aDNA; metagenomics; masticates pitch resin; molecular paleopathology; Archaeology; Arkeologi; Biology with Specialisation in Human Evolution and Genetics; Biologi med inriktning mot människans evolution och genetik;

    Sammanfattning : A joint archaeogenetic perspective integrates diverse lines of evidence from archaeology and paleogenetics to advance our understanding of human prehistory. In this thesis I contribute to the corpus of archaeogenetic data by producing and analysing ancient genomic data from osseous and masticated material. LÄS MER

  3. 12. Long-term development of subalpine lakes : effects of nutrients, climate and hydrological variability as assessed by biological and geochemical sediment proxies

    Författare :Manuela Milan; Christian Bigler; Monica Tolotti; Richard Bindler; Krystyna Szeroczyńska; Atte Korhola; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Paleolimnology; diatoms; Cladocera; sub-fossil pigments; geochemistry; wavelengthdispersive X-ray fluorescence spectroscopy; Lake Garda; Lake Ledro; reference conditions; nutrient enrichment; climate change; hydrological regime.;

    Sammanfattning : Sediment records of two Italian subalpine lakes (Lake Garda and Lake Ledro) were analyzed in order to reconstruct their ecological evolution over the past several hundred years. A multi-proxy and multi-site approach was applied in order to disentangle the effects of local anthropogenic forcings, such as nutrients, and climate impacts on the two lakes and their catchments. LÄS MER

  4. 13. 1. The Dynamics of External Financing. 2. Proxies for the Marginal Tax Rate and Determinants of Debt Policy

    Författare :Joakim Jansson; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi;

    Sammanfattning : .... LÄS MER

  5. 14. High-resolution simulations of two cold palaeo climates in Europe : MIS 3 and LGM

    Författare :Gustav Strandberg; Erik Kjellström; Qiong Zhang; Johan Nilsson; Anders Moberg; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Palaeo climate; climate modelling; proxy data; LGM; MIS 3; meteorologi; Meteorology;

    Sammanfattning : The study of past climate is important because it increases our understanding of how the climate system works. Past climate is often reconstructed by using proxies (that is observations of things that tell something about past climate, for example tree rings, pollen in lake sediments and fossils). LÄS MER

  7. 15. Palaeoenvironmental changes in the northern boreal zone of Finland: local versus regional drivers

    Författare :Shyhrete Shala; Karin H. Helmens; Christian Bigler; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Palaeolimnology; Palaeoecology; Biological assemblages; Sediment geochemistry; Regional drivers; Local drivers; Quantitative temperature reconstructions; Transfer-functions; Holocene; MIS 5d-c; Northern boreal zone; NE Finland; kvartärgeologi; Quaternary Geology;

    Sammanfattning : Multiple proxies derived from the Lake Loitsana sediment sequence (NE Finland) are employed to determine the timing of deglaciation, characterise an early Holocene proglacial lake stage and reconstruct Holocene lake development. Local-scale processes causing shifts in biological assemblages are identified and the most likely Holocene mean July air temperature (Tjul) development is assessed. LÄS MER