Essays about: "biogeochemical cycle"

Showing result 1 - 5 of 12 essays containing the words biogeochemical cycle.

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

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Kaavya Venkateswaran; [2023]
    Keywords : comparative genomics; microbial ecology; bioinformatics; carbon fixation; pangenomics;

    Abstract : 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. READ MORE

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

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Marlene Kassel; [2017]
    Keywords : freezing damage; bryophytes; subarctic; climate change;

    Abstract : 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. READ MORE

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

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

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

    Abstract : 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. READ MORE

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

    University essay from Institutionen för ekologi, miljö och geovetenskap

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

    Abstract : 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. READ MORE

  6. 5. Nitrogen footprint vs. life cycle impact assessment methods : a comparison of the methods in a case study

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Erika Perming; [2012]
    Keywords : atmosfärvetenskap och biogeokemiska kretslopp; life cycle; footprint; physical geography; geography; nitrogen; impact assessment; atmospheric sciences and biogeochemical cycles; kväve; fotavtryck; livscykel: påverkansbedömning; Earth and Environmental Sciences;

    Abstract : Kväveföreningar påverkar miljön på flera sätt när de kommer ut i luft och vatten, bland annat så sker övergödning och försurning men även ozonkoncentrationen kan påverkas i troposfären och stratosfären. Effekterna som kväve ger upphov till har inte fått mycket uppmärksamhet i klimat- och miljödebatter, istället har fokus varit koldioxidutsläppen. READ MORE