Sökning: "Paleolimnology"
Hittade 5 uppsatser innehållade ordet Paleolimnology.
1. Historical mining of Fe-Ca ore in Garpenberg, Sweden. : A study based on lake sediment geochemistry from Finnhytte-dammsjön.
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : It is well established that mining and metallurgy on a larger scale in Sweden originated in Bergslagen. The historical mining district Garpenberg in Bergslagen presently show the oldest signs of mining in Sweden (2300 BP) based on a study of a lake sediment profile from Gruvsjön. LÄS MER
2. Väder- och klimatförändringars effekter på produktivitet och sedimentation i en boreal sjö
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : This report aimed to investigate how chlorophyll-concentrations (Chl-a) in the water column and varved sediments were affected by changes in air temperature and precipitation and consequently how climate change will affect the sedimentation and productivity in boreal aquatic ecosystems. VRS (visible-reflectance-spectroscopy) was used to asses Chl-a and its derivates in sediment trap samples between 2002-2021 and in a series of freeze cores (1979-2021) from lake Nylandssjön, with annually laminated sediments. LÄS MER
3. Geochemical impact of a bloomery : Tracing a bloomery furnace in peat records with geochemistry in central Sweden
Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : The aim of this study was to work out whether bloomery activities might have left a geochemical imprint in two mires close to a known bloomery and identify differences between the geochemical signals in the mires. Therefore two peat profiles (140 cm deep) and a series of bulk samples (composite of 10-60 cm) were taken near the remains of a bloomery close to Ängersjö, Hälsingland, which has one documented radiocarbon date of AD 1300-1435. LÄS MER
4. Relation between Contemporary Water Chemistry and Historical pH from Paleolimnology to Estimate Reference Conditions in Swedish Lakes : Development of a simple tool for acidification assessment
Master-uppsats, Institutionen för geovetenskaperSammanfattning : Abstract: Acidification was categorized as the main environmental problem in Scandinavia during the 1960’s. Fortunately for Sweden, as with other countries in Scandinavia, has shown a process of recovery from acidification, by emission control. Further Sweden has had an extended liming program to mitigate the effects from acidification. LÄS MER
5. Paleolimnology : A literature review
Master-uppsats, Institutionen för ekologi, miljö och geovetenskapSammanfattning : The aim of this literature study is to compare and discuss different fields of paleolimnology, with a focus on three main research areas – eutrophication, acidification, and climate change. Pioneering work and the development of paleolimnological methods around these three areas were reviewed and synthesized. LÄS MER
