Sökning: "Freeze-coring"

Hittade 1 uppsats innehållade ordet Freeze-coring.

  1. 1. Väder- och klimatförändringars effekter på produktivitet och sedimentation i en boreal sjö

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

    Författare :Albin Eriksson; [2021]
    Nyckelord :Chlorophyll; Climate-change; Paleolimnology; Sediment traps; Freeze-coring; Klorofyll; Klimatförändringar; Paleolimnologi; Sedimentfällor; Frysproppar;

    Sammanfattning : 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