Search for dissertations about: "Övergödning"

Showing result 1 - 5 of 39 swedish dissertations containing the word Övergödning.

2. 1. Managing agricultural nutrient leaching within the EC Water Framework Directive in Sweden

   Author : Anna-Lena Bratt; Per Sandén; Martin Ljung; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; nutrient leaching; agricultural pollution; C Water Framework Directive; water quality; legislation; övergödning; lantbruk; Water in nature and society; Vatten i natur och samhälle;

   Abstract : Agricultural management practices geared towards reducing nutrient leaching are in focus for the research presented in this thesis. Critical measures for reducing diffuse pollution from the agricultural sector depend on decisions of individual farmers. READ MORE

4. 2. Towards a Sustainable Food System : Entrepreneurship, Resilience and Agriculture in the Baltic Sea Region

   Author : Markus Larsson; Rebecka Milestad; Höjer Mattias; Thomas Hahn; Lars Drake; KTH; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sustainable agriculture; eutrophication; Baltic Sea; entrepreneurship; resilience; sustainable food system; Hållbart jordbruk; övergödning; Östersjön; entreprenörskap; resiliens; hållbart livsmedelssystem; Planering och beslutsanalys; Planning and Decision Analysis;

   Abstract : This thesis compares conventional agriculture and Ecological Recycling Agriculture (ERA) in terms of their environmental and socio-economic effects. Environmental effects include greenhouse gas emissions and energy use, but this analysis focuses on nutrient losses. READ MORE

5. 3. Silicon cycling in the Baltic Sea : Trends and budget of dissolved silica

   Author : Liana Papush; Åsa Danielsson; Lars Rahm; Petra Tallberg; Linköpings universitet; []
   Keywords : Dissolved silica; trends; nutrient; nutrient ratios; diatoms; Redfield; limitation; eutrophication; riverine load; budget; fluxes; accumulation; retention; optimisation; Baltic Sea; Löst kisel; trender; näringsämne; näringsämnens kvoter; kiselalger; Redfield; tillväxtbegränsning; övergödning; flodtillförsel; budget; flöden; ackumulering; retention; optimering; Östersjön; NATURAL SCIENCES; NATURVETENSKAP;

   Abstract : The dissolved silicon (DSi) has a crucial role for growth of a large group of primary producers – diatoms and, hence, impact on functioning of the aquatic food web. This thesis contributes to an increased understanding of the modifications of the DSi cycling in the Baltic Sea. READ MORE

6. 4. Excessive Seas : Waste Ecologies of Eutrophication

   Author : Jesse Peterson; Sabine Höhler; Kate Rigby; KTH; []
   Keywords : HUMANIORA; HUMANITIES; algal bloom; Baltic Sea; cultural eutrophication; dead zone; waste ecology; environmental degradation; environmental humanities; critical ocean studies; environmental imaginary; environmental value; more-than- human; textual analysis; visual analysis; storytelling; algblomning; Östersjön; kulturell övergödning; bottendöd; avfallsekologi; miljöförstöring; miljövetenskap; kritiska havsstudier; miljömyndighet; miljövärde; mer-än-mänsklig; textanalys; visuell analys; berättande; Historiska studier av teknik; vetenskap och miljö; History of Science; Technology and Environment;

   Abstract : This dissertation researches how perspectives in western industrial societies communicate about and give meaning to environmental degradation through case studies on the causes and effects of cultural eutrophication—namely nutrient pollution, algal blooms, and dead zones—in the Baltic Sea. Utilizing this approach, this dissertation addresses the ecological problems of cultural eutrophication in marine ecosystems by exposing normative claims humans make about the Baltic Sea and its contents as well as detailing how seas that exceed human expectations may offer insights into negotiating differing perspectives, discrepancies in power, and ways of being among humans and non-humans in marine environments. READ MORE

7. 5. Fate of riverine iron over estuarine salinity gradients

   Author : Simon Herzog; Enhet akvatisk ekologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; iron Fe ; Organic matter; boreal rivers; XAS; DLS; Fe isotope;

   Abstract : Rivers have traditionally not been considered important sources of bioavailable iron (Fe) to the marine waters, since most Fe is lost by salinity-induced aggregation and sedimentation during estuarine mixing. However, recent studies from boreal rivers found a remarkably high Fe stability, probably due to the interaction with organic matter. READ MORE