Sökning: "biogeochemical cycle"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden biogeochemical cycle.

  1. 1. Comparative genomics of Central Arctic Ocean microbiota for observation of Alternative Carbon Fixation Pathways

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Kaavya Venkateswaran; [2023]
    Nyckelord :comparative genomics; microbial ecology; bioinformatics; carbon fixation; pangenomics;

    Sammanfattning : The Central Arctic Ocean is a repository of rich and diverse biota, whose major portion is one of the most important drivers of global biogeochemical cycles, including carbon cycling. In this study, the functional potential of the microbiota to fix carbon with alternative carbon fixation pathways were investigated along with their chemolithotrophic characteristics. LÄS MER

  3. 2. Transport och upptag av makronäringsämnen i ytvatten : Vilka faktorer påverkar transport och upptag av makronäringsämnen i ett mindre avrinningsområde?

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för biologi och miljö (BOM)

    Författare :Erika Svensson; [2021]
    Nyckelord :makronäringsämnen; ytvatten; avrinningsområde;

    Sammanfattning : The availability of nutrients is the foundation of our ecosystems both on land and in the sea. The processes that control the surplus of nutrients and the biogeochemical cycle are linked to several important environmental issues and therefore important to know. LÄS MER

  4. 3. Effects of climate change on freezing damage in three subarctic bryophyte species

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

    Författare :Marlene Kassel; [2017]
    Nyckelord :freezing damage; bryophytes; subarctic; climate change;

    Sammanfattning : Climate change is expected to have a strong impact on subarctic ecosystems. Increased temperatures as well as altered precipitation and snow cover patterns are predicted to change species distribution and affect biogeochemical processes in the subarctic tundra. LÄS MER

  5. 4. Production and biodegradability of dissolved organic carbon from dIfferent litter sources

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Carlos Arellano; [2015]
    Nyckelord :biogeochemical cycles; physical geography and ecosystem analysis; dissolved organic carbon; carbon cycle; soil biogeochemistry; Earth and Environmental Sciences;

    Sammanfattning : The movement of carbon on Earth is based on exchange between pools that represent carbon in different physical forms, differing in chemical composition, structure and function. Dissolved organic carbon plays an important role in ecosystems because of its mobility, which can be relatively high in saturated soils, and because it is the most available fraction of organic matter for microorganisms in soil, being particularly active in microbial degradation processes through soil profile. LÄS MER

  7. 5. Effects of forestry on emission of CO2 from boreal lakes

    Master-uppsats, Institutionen för ekologi, miljö och geovetenskap

    Författare :Cecilia Larsson; [2013]
    Nyckelord :carbon dioxide; boreal lakes; forestry; dissolved organic carbon; global carbon cycling;

    Sammanfattning : Inland waters have long been neglected in the global carbon cycle. They represent only 2,8% of the land area, but it has come clear that inland waters play a key role in the transformation of terrestrial fixed carbon to the atmosphere. LÄS MER