Search for dissertations about: "Carbon and Nitrogen Stable Isotope Ratios"
Found 5 swedish dissertations containing the words Carbon and Nitrogen Stable Isotope Ratios.
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1. An evaluation of the distributions of polychlorinated biphenyls and organic matter in coastal sediments
Abstract : The objective of this thesis is to improve the understanding of what processes and mechanism affects the distribution of polychlorinated biphenyls (PCBs) and organic carbon in coastal sediments. Because of the strong association of hydrophobic organic contaminants (HOCs) such as PCBs with organic matter in the aquatic environment, these two entities are naturally linked. READ MORE
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2. Export and sources of organic carbon in the Lena River basin, Northeastern Siberia
Abstract : Permafrost areas are considered to be one of the largest terrestrial storages of carbon. In a warming climate these areas are expected to experience changes in carbon transport to rivers and the oceans due to permafrost thawing, which could enhance erosion, change water flow pathways and increase greenhouse gas emissions. READ MORE
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3. Weaned Upon A Time : Studies of the Infant Diet in Prehistory
Abstract : This thesis is concerned with how prehistoric infants were fed in different physical and cultural environments, and in particular what impact the economic, social, and epidemiological changes associated with the development of agriculture had on infant feeding practices. In order to examine these effects, stable isotope ratio analysis has been used to assess the duration of breastfeeding and weaning in a variety of prehistoric contexts. READ MORE
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4. Species interactions and energy transfer in aquatic food webs
Abstract : Food webs are structured by intricate nodes of species interactions which govern the flow of organic matter in natural systems. Despite being long recognized as a key component in ecology, estimation of food web functioning is still challenging due to the difficulty in accurately measuring species interactions within a food web. READ MORE
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5. Novel methods of tandem mass spectrometry in life sciences
Abstract : Mass spectrometry (MS) is a powerful analytical technique widely employed for isotopic analysis and species identification in numerous research fields. Isotopic analysis involves precisely measuring stable isotopes within a sample, offering valuable insights into its origin, environment, and biological processes. READ MORE