Essays about: "biogeochemical cycle"
Showing result 1 - 5 of 12 essays containing the words biogeochemical cycle.
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1. Comparative genomics of Central Arctic Ocean microbiota for observation of Alternative Carbon Fixation Pathways
University essay from Uppsala universitet/Institutionen för biologisk grundutbildningAbstract : 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
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2. Effects of climate change on freezing damage in three subarctic bryophyte species
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : 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
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3. Production and biodegradability of dissolved organic carbon from dIfferent litter sources
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : 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
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4. Effects of forestry on emission of CO2 from boreal lakes
University essay from Institutionen för ekologi, miljö och geovetenskapAbstract : 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
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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 ekosystemvetenskapAbstract : 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