Search for dissertations about: "sediment"

Showing result 11 - 15 of 552 swedish dissertations containing the word sediment.

  2. 11. Sediment transport from source to sink in the Lake Baikal basin : Impacts of hydroclimatic change and mining

    Author : Jan Pietroń; Jerker Jarsjö; Enrica Viparelli; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; sediment transport; human impact; hydroclimatic change; surface mining; metal-enriched sediment; Lake Baikal; the Selenga River; the Selenga Delta; Physical Geography; naturgeografi;

    Abstract : Different magnitude, intensity and timing of precipitation can impact runoff, hillslope erosion and transport of sediment along river channels.  Human activities, such as dam construction and surface mining can also considerably influence transport of sediment and sediment-bound contaminants. READ MORE

  4. 12. Role of sediment organic matter quality and benthic organisms for the fate of organic contaminants in marine systems

    Author : Maria E. Granberg; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; sediment; ecotoxicology; macrofauna; bacteria; PAH; PCB;

    Abstract : Marine sediments constitute important contaminant sources within our environment. Organic matter input to marine sediments changes seasonally in terms of both quantity and quality, and has been profoundly altered in many coastal areas due to eutrophication. READ MORE

  5. 13. Phosphorus recycling in brackish and marine environments - Sediment investigations in situ in the Baltic Sea and the By Fjord

    Author : Lena Viktorsson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phosphorus; sediment; anoxia; Baltic Sea; By Fjord; benthic flux;

    Abstract : The phosphorus load to the oceans from land started to increase since around 1950 when man started to mine phosphorus-mineral from phosphorus-rich soils and bedrock. The increased use of phosphorus fertilizers in agriculture together with the growth of coastal cities increased the load of phosphorus to the coastal ocean where plankton production flourished. READ MORE

  6. 14. Eastern equatorial Pacific bulk sediment properties and paleoceanography since the late Neogene

    Author : Daniele Reghellin; Helen K. Coxall; Jan Backman; Gerald R. Dickens; Steve Hovan; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Paleoceanography; late Neogene; eastern equatorial Pacific; deep sea sediments; bulk sediment; stable isotopes; surface mixed layer; sediment physical properties; Marine Geology; maringeologi;

    Abstract : Reconstructing eastern equatorial Pacific (EEP) oceanography since the late Neogene (about 8 million years ago, Ma) is a central topic in current paleoceanographic investigations. The reason for this is two-fold. READ MORE

  7. 15. Molecular analysis of lake-sediment organic matter : long-term dynamics and environmental implications in boreal lakes

    Author : Sofia Ninnes; Richard Bindler; Xiao-Ru Wang; Christian Bigler; Hendrik Vogel; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Lake sediment; Holocene; organic matter; Pyrolysis-GC MS; mid-infrared spectroscopy; boreal;

    Abstract : Lake sediment organic matter is material composed of residues from plants, algae, animals, fungi and bacteria. Its molecular composition is dependent on the sources as well as secondary biotic and abiotic transformations, which combined generates a highly complex matrix. READ MORE