Sökning: "lake sediments"

Visar resultat 21 - 25 av 124 uppsatser innehållade orden lake sediments.

  1. 21. Metal mobility and transport from an oil-shale mine, Lake Nõmmejärv, Estonia

    Kandidat-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Åsa Ekelund; [2020]
    Nyckelord :Mine waste; Heavy metals; Oil shale; Lake sediments; Lake Nõmmejärv; Human impact; Kurtna kame field; Estonia.;

    Sammanfattning : Mining activities have a large impact on the environment, for example by the release of heavy metals from acid mine drainage and erosion of mine waste. North-eastern Estonia has the largest commercially exploited oil-shale deposit in the world. LÄS MER

  3. 22. Hydrologisk och hydrokemisk studie om Trehörningen : En igenväxande sjö i östra Uppland

    Kandidat-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Christoffer Grunewald; André Hofstedt; John Winlund; [2020]
    Nyckelord :Hydrochemistry; limnology; overgrowth; mapping; phosphorus; nitrogen; Hydrokemi; limnologi; igenväxning; kartering; fosfor; kväve;

    Sammanfattning : Lake overgrowth occurs in many areas in Sweden, and it is often explained by elevated amounts of nutrients. The overgrowth results in a changed local environment for both communities and ecosystems. In this project the lake Trehörningen, near Spersboda in Norrtälje municipality, has been examined regarding an ongoing overgrowth process. LÄS MER

  4. 23. Holocene lake-level changes in the Siljan Lake District – Towards validation of von Post’s drainage scenario

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Savvas Paradeisis-Stathis; [2020]
    Nyckelord :Lake Siljan; Dalarna; basin isolation; catastrophic drainage; early Holocene; lake sediments; XRF scanning; C N ratio; magnetic susceptibility; pollen; Ancylus Lake; Earth and Environmental Sciences;

    Sammanfattning : The Dalarna province in south-central Sweden shows a great variety of geological evidence from the Late Quaternary. A peculiar deglaciation pattern, along with unique hydrological conditions, has left a lot of space for speculations over the palaeoenvironmental conditions during the early Holocene. LÄS MER

  5. 24. A palaeoecological study of the establishment of beech forest in Söderåsen National Park, southern Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Maja Damber; [2020]
    Nyckelord :Odensjön; southern Sweden; palaeoecology; pollen; macrofossils; lake sediments; Fagus sylvatica; Earth and Environmental Sciences;

    Sammanfattning : Denna studie fokuserar på en sedimentsekvens som hämtats från Odensjön, i Söderåsens nationalpark i Skåne, södra Sverige. Den undersökta sekvensen, som täcker de översta 86 cm av sedimenten, är unik på grund av dess väldigt tydliga årsvarv, som har möjliggjort en precis datering (Hertzman in prep.). LÄS MER

  7. 25. Environmental change during the Holocene : A comparative multi-proxy study of landscape disturbances in Northern Sweden

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Mégane Capel; [2019]
    Nyckelord :Holocene; Lake-Water TOC; climate; lake sediment; vegetation;

    Sammanfattning : Varved lake sediments were used to provide information on how a landscape is affected by disturbances of different scales, from global (i.e. climatic) to local (i.e. LÄS MER