Search for dissertations about: "estuary"
Showing result 11 - 15 of 26 swedish dissertations containing the word estuary.
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11. Origin of Iron Isotope Signatures in Boreal Estuaries
Abstract : The geochemistry of iron (Fe) during freshwater transport and estuarine mixing has been investigated. Espescially the changes in the Fe-isotope signature have been studied. The fate of Fe-isotopes during estuarine mixing has been poorly studied. READ MORE
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12. Evaluation of suitable nursery areas for penaeid shrimps in shallow water systems in southern Mozambique
Abstract : Tropical shallow water habitats such as estuaries, mangrove forests and seagrass beds are important nursery areas for juveniles of many commercially important species including penaeid shrimp. Penaeids are one of the most important fishery resources worldwide, and in Mozambique they are the basis of a profitable commercial fishery, landing hundreds of tons per year. READ MORE
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13. Mercury species transformations in marine and biological systems studied by isotope dilution mass spectrometry and stable isotope tracers
Abstract : This thesis focuses on the implementation of species-specific isotope dilution (SSID) methodology and stable isotope tracers to determine mercury species occurrence and transformation processes in-situ and during sample treatment. Isotope enriched tracers of methyl-, ethyl- and inorganic mercury were synthesised and applied in different combinations to marine and biological samples. READ MORE
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14. Sea water – shelf sediment interactions: Tracing Neodymium export and water/particle exchange with radiogenic isotopes
Abstract : Ocean circulation is a key component for the Earth climate system. Driven by wind and density distribution, governed by temperature and salinity, the ocean currents are redistributing heat from low to high latitudes. READ MORE
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15. Non-indigenous zooplankton : the role of predatory cladocerans and of copepods in trophic dynamics
Abstract : Human-mediated introductions of non-indigenous species now threaten to homogenize the biota of the Globe, causing huge economic and ecological damage. This thesis studies the ecological role of 3 invasive planktonic crustaceans, the omnivorous copepod Acartia tonsa (western Atlantic and Indo-Pacific) and the predatory cladocerans, Cercopagis pengoi (Ponto-Caspian) and Bythotrephes longimanus (Eurasian). READ MORE