Sökning: "vegetation history"

Visar resultat 1 - 5 av 57 avhandlingar innehållade orden vegetation history.

1. 1. Changing Landscapes : An Environmental History of Chibuene, Southern Mozambique

   Författare :Anneli Ekblom; Paul Sinclair; Louis Scott; João Morais; Uppsala universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Archaeology; environmental history; archaeology; archaeobotany; paleoecology; vegetation history; pollen analysis; environmental management; environmental insecurity; resource utilisation; landscape; paleclimatology; trade; oral tradition; Mozambique; Vilanculos; Arkeologi; Archaeology subjects; Arkeologiämnen;

   Sammanfattning : This thesis analyses the dynamics of environmental change and its embeddedness in the long term interactions of social history and rainfall variability through the building of an environmental history of the Chibuene locality, the coastal plain of southern Mozambique, 5 km south of the town Vilanculos, from 400 AD to present day. Land-use practices over time are discussed on the basis of vegetation and land-use history based pollen analysis, charcoal influx and diatom analysis. LÄS MER

3. 2. Vegetation history, human impact and palaeogeography of West Estonia : Pollen analytical studies of lake and bog sediments

   Författare :Siim Veski; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Vegetation history; human impact; palaeogeography; shoreline displacement; The Baltic Sea; the Yoldia Sea; the Ancylus Lake; the Litorina Sea; pollen analysis; macro fossil analysis; bog and lake sediments; radiocarbon dating; Holocene; Estonia; Geovetenskap; Earth sciences; Geovetenskap; Earth Sciences with Specialization Environmental Analysis; geovetenskap med inriktning mot miljöanalys;

   Sammanfattning : The history of Holocene vegetation in western Estonia and the West Estonian Archipelago is described. Early Holocene sea level changes in the area are reconstructed, and human impact on the vegetation during the Late Holocene is discussed West Estonia was divided into five study areas (Rummu-Maardu, Mustjärve, Velise-Kiilaspere, Tôstamaa Peninsula, and northern Saaremaa in the West Estonian Archipelago, from north to south). LÄS MER

4. 3. Holocene vegetation dynamics and climate changes in the Torneträsk area, northern Sweden

   Författare :Lena Barnekow; Kvartärgeologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Paleobotanik; palynology; phylogeny; Palaeobotany; northern Sweden; Torneträsk; Abisko; lake-level; radiocarbon dating; forest history; Holocene; tree-line; climate; Vegetation; fylogeni; palynologi; Physical geography; geomorphology; pedology; cartography; climatology; Fysisk geografi; geomorfologi; marklära; kartografi; klimatologi;

   Sammanfattning : The aim of this study was to reconstruct the Holocene vegetation history and the climate changes in a subarctic area. The results are based on pollen and macrofossil records from six lakes in the Torneträsk area. The lakes are situated at altitudes between 370 and 999 m a.s. LÄS MER

5. 4. Det upphöjda landet : vetenskapen, landhöjningsfrågan och kartläggningen av Sveriges förflutna, 1860-1930

   Författare :Christer Nordlund; Umeå universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; History of science; environmental history; Quaternary geology; plant geography; archaeology; landscape; highest shoreline; land elevation; shoreline displacement; naturai landmarks; archaeological fìndings; scientific practice; thought collective; nationalism.;

   Sammanfattning : Taking the establishment of Ice Age theory as its point of departure, the present dissertation examines aspects of geological, plant geographical and archaeological research on shoreline displacement conducted in Sweden during the period 1860-1930, and the significance of this research for the perception of "the Swedish landscape" and its post-glacial history. The research is analyzed on three levels under the rubrics "The Highest Shoreline and the Ancylus Lake", "The Question of Land Elevation", and "Charting Swedens Past", respectively. LÄS MER

7. 5. Platsens blick : Vetenskapsakademien och den naturalhistoriska resan 1790-1840

   Författare :Pär Eliasson; Umeå universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; travel; apodemics; natural history; Royal Swedish Academy of Science; Swedish Museum of Natural History; plant geography; zoology; Linnaeus; Göran Wahlenberg;

   Sammanfattning : The purpose of the present dissertation is to study the relationship between travel as a form of knowledge and the natural history pursued at the Royal Academy of Science during the period 1790-1840. Primarily, this dissertation deals with the perception of travel as a form of knowledge which existed at the Royal Swedish Academy of Science, though a number of selected journeys are used to illustrate the era's shifting perceptions on travel. LÄS MER