Search for dissertations about: "Baltic Sea"
Showing result 21 - 25 of 556 swedish dissertations containing the words Baltic Sea.
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21. Ancient genomics of Baltic seals : Insights on the past Baltic grey seal and harp seal populations
Abstract : This thesis aims to study and describe the ancient populations of grey and harp seals in the Baltic Sea, and to present new methodological approaches for general use in ancient DNA studies.The dissertation is comprised of five studies: a review of the use of paleogenetics in studying ancient human-marine mammal interactions; a method paper investigating patterns of DNA preservation in ancient pinniped samples; a method paper presenting a genetic sex identification method for ancient pinnipeds; a population genomic study of the Baltic grey seal; and a population genomic study of the now extinct Baltic harp seal. READ MORE
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22. Man, murres and modern fisheries : A case study in the Baltic Sea
Abstract : Overfishing and climate change put increasing pressure on marine systems, with effects on commercially targeted fish and top predators dependent on these resources. To achieve sustainable resource use, governance mechanisms need to incorporate knowledge about ecosystem dynamics. READ MORE
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23. External Growth Control of Baltic Sea Cyanobacteria
Abstract : The overall aim of the study was to provide better insights to the ecological role and impact of cyanobacteria in Baltic Sea (BS) bay, coastal and open sea areas. Biomass and heterocyst development of diazotrophic, heterocystous cyanobacteria were monitored over several years simultaneously as physical parameters such as nutrients and temperature. READ MORE
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24. Pharmaecological perspectives : Exposure studies using coastal Baltic Sea organisms
Abstract : This thesis investigates the effects of pharmaceutical substances on coastal Baltic Sea organisms. Despite an increasing awareness of the occurrence of pharmaceuticals in various aquatic compartments, current knowledge of their possible effects on non-target organisms is limited. READ MORE
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25. Cyanobacterial Nitrogen Fixation in the Baltic Sea : With focus on Aphanizomenon sp
Abstract : Cyanobacteria are widely distributed in marine, freshwater and terrestrial habitats. Some cyanobacterial genera can convert di-nitrogen gas (N2) to bioavailable ammonium, i.e. perform nitrogen (N) fixation, and are therefore of profound significance for N cycling. READ MORE