Sökning: "autochthonous"

Visar resultat 16 - 20 av 22 uppsatser innehållade ordet autochthonous.

  1. 16. Towards sustainable development : A comparative case study of ESD for TVET policies and practices between Cuba and Sweden

    Master-uppsats, Stockholms universitet/Institutionen för pedagogik och didaktik

    Författare :Tania Rempatsiou; [2017]
    Nyckelord :Sustainable Development; Education for Sustainable Development; environment; TVET; international discourse; policies; experiences; perspectives; Cuba; Sweden;

    Sammanfattning : The development methods mostly applied until today provoked severe environmental imbalances in the world. To deal with this, almost twenty-five years ago the environmental issues were introduced in the agenda of discussions in the United Nations Conference on Environment and Development (UNCED) that took place in Rio de Janeiro in 1992, intending to introduce a more sustainable approach of development (Desai and Potter, 2002, p 478). LÄS MER

  3. 17. Tracing the source of colourless carbon in an arctic lake on SW Greenland : Insights of organic matter origin from hydrogen isotope analyses of samples prepared using steam equilibration

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

    Författare :Bror Holmgren; [2016]
    Nyckelord :Søndre Strømfjord; dissolved organic carbon; stable isotopes; steam equilibration;

    Sammanfattning : Lakes play an important role in the global carbon (C) cycle as they process carbon from terrestrial (allochthonous) and within lake (autochthonous) sources and may store C over long periods of time. Some arctic lakes contain high concentrations of dissolved organic carbon (DOC) that does not absorb light and thus remains colourless. LÄS MER

  4. 18. Sources of organic carbon fueling carbon emissions from tropical reservoirs

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Gabriella Villamor Saucedo; [2016]
    Nyckelord :tropical reservoirs; decomposition; autochthonous carbon; allochthonous carbon; tropical macrophytes; methanogenesis; tropiska vattenkraftsmagasin; metangasproduktion; autoktont OM; alloktont OM; tropiska makrofyter;

    Sammanfattning : For a sustainable energy supply, it is of importance to be aware about the environmental impacts from the different energy sources. Hydroelectric reservoirs in tropical areas have been found to emit more greenhouse gases (GHG) than reservoirs from boreal regions. LÄS MER

  5. 19. Utvärdering av nano- och ultrafilter för avskiljning av cyanotoxiner i dricksvatten : Effekter av membrantyp och råvattenkvalitet

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Maria Takman; [2015]
    Nyckelord :Mikrocystin; anatoxin-A; paralytiska skaldjurstoxiner; membran; nanofilter; ultrafilter; DOC;

    Sammanfattning : The drinking water production in Sweden is facing challenges because of climatic changes, eutrophication and brownification, which contributes to an increase of algal blooms. This can lead to a production of different types of toxins, and the most common group of algal toxins is the hepatotoxic microcystins (MC). LÄS MER

  7. 20. Resource use by macroinvertebrates within boreal stream food webs

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

    Författare :Emelie Landström; [2015]
    Nyckelord :Allochthonous; Autochthonous; Food webs; Boreal; Streams; Deuterium; Carbon;

    Sammanfattning : Stream food webs are supported by carbon produced within the stream (autochthonous) and from terrestrial environments (allochthonous). Allochthonous carbon (C) inputs are assumed to be the dominant C source supporting food webs within small streams, but few direct estimates of resource use in small streams have been made, especially in boreal streams. LÄS MER