Sökning: "robygd"

Hittade 2 uppsatser innehållade ordet robygd.

1. 1. Geochemical and palaeomagnetic characteristics of a Swedish Holocene sediment sequence from Lake Storsjön, Jämtland

   Master-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Joakim Robygd; [2015]
   Nyckelord :Jämtland; geochemistry; palaeomagnetism; PSV; sedimentation rate; Holocene development; geochronology; climate change; Earth and Environmental Sciences;

   Sammanfattning : As a part of a French-Swedish collaboration project to reconstruct middle to northern European climate variations during the Holocene, a sediment sequence from Lake Storsjön, Jämtland was retrieved and analysed for geochemical and palaeomagnetic properties. The subsampled sequence, composed of one freeze core and three Niederreiter piston cores, revealed information of both climatic, environmental and anthropogenic changes over the past 10,800 years. LÄS MER

3. 2. Effekten av kvävegödsling på gasproduktionen vintertid i boreala sjöar

   Kandidat-uppsats, Institutionen för ekologi, miljö och geovetenskap

   Författare :Joakim Robygd; [2013]
   Nyckelord :Carbon dioxide; methane; DOC; nitrogen; fertilization; boreal lakes; Sweden;

   Sammanfattning : To investigate effects of nitrogen on in-lake CO2 and CH4 production during winter, three pair of lakes was subject for a fertilizing experiment in which one lake in each pair was fertilized with nitric acid (HNO3) directly into the water column in the summer of 2012. The lakes in each pair are assumed to be morphologically, hydrologically and biologically similar, that is, the non-fertilized lakes are considered references. LÄS MER