Search for dissertations about: "natural science"
Showing result 16 - 20 of 8012 swedish dissertations containing the words natural science.
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16. The wild male mink as a sentinel for endocrine-disrupting chemicals and reproductive toxicity
Abstract : Increasing evidence indicates that pollutants may affect the hormone system of humans and wildlife. These endocrine-disrupting chemicals are related to an increased risk of a variety of diseases and disorders, including adverse effects on the reproductive system. READ MORE
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17. Taste for Science : How can teaching make a difference for students’ interest in science?
Abstract : The objective of the thesis is to describe and analyse aspects of home background and teaching that may be important for students’ capability and will to participate in science. The purpose is to make explicit how teaching can support students in developing an interest in science and so counter-balance the restricted opportunities some students may have due to upbringing. READ MORE
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18. Improving our understanding of carbon cycling in agroecosystems by studying δ¹³C signatures in soil carbon stocks and fluxes : results from a Swedish long-term field experiment
Abstract : Soil carbon (C) storage has gained much attention in the past decade due to its potentially huge impact on climate change mechanisms. Particular focus has been paid to possible feedback mechanisms, whether soil can be considered a sink or source of C and how soils can be managed in order to mitigate climate change. READ MORE
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19. Earthworm and arbuscular mycorrhizal communities in agricultural soils : management of key soil organisms for sustainable agriculture
Abstract : Intensive agriculture is detrimental to soil biodiversity and functioning. Promoting communities of key soil organisms, such as earthworms and arbuscular mycorrhizal (AM) fungi, may help improve agricultural sustainability by replacing inputs with ecosystem services. READ MORE
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20. The role of biological processes in base cation supply in boreal forest podzols
Abstract : This thesis describes experiments designed to improve understanding of biological processes contributing to supply of base cations and other nutrients in boreal forest podzols. We used microcosms containing tree seedlings growing in natural substrates, a combination of direct measurements, modelling, stable Mg isotope analysis, and 13CO2 pulse-labelling. READ MORE