Search for dissertations about: "skörd"

Showing result 1 - 5 of 19 swedish dissertations containing the word skörd.

  2. 1. Wastewater treatment in constructed wetlands : Effects of vegetation, hydraulics and data analysis methods

    Author : Hristina Bodin; Karin Tonderski; Jesper Persson; Stefan Weisner; Per Milberg; Hans Brix; Linköpings universitet; []
    Keywords : constructed wetland; free water surface flow; wastewater treatment; Kenya; Sweden; vegetation; harvest; Cyperus papyrus; Echinochloa pyramidalis; mass load; phosphorus; ammonium; suspended solids; pollutant removal; hydraulics; residence time distribution; data analysis methods; Konstgjorda våtmarker; avloppsvatten; vattenrening; fosfor; ammonium; partiklar; Kenya; Sverige; växter; Cyperus papyrus; Echinochloa pyramidalis; skörd; hydraulik; dataanalysmetod;

    Abstract : Degradation of water resources has become one of the most pressing global concerns currently facing mankind. Constructed Wetlands (CWs) represent a concept to combat deterioration of water resources by acting as buffers between wastewater and receiving water bodies. READ MORE

  4. 2. Effects of carbon dioxide and ozone on wheat crop yield and grain quality

    Author : Malin Broberg; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; koldioxid; ozon; vete; skörd; protein; stärkelse;

    Abstract : Atmospheric concentrations of carbon dioxide (CO2) and ozone (O3) have steadily increased since the industrial revolution. CO2 and O3 directly affect plant physiology, CO2 being an essential substrate for photosynthesis, while O3 is an oxidative agent causing damage to plant tissues. READ MORE

  5. 3. Nutrient Recovery as an Added Benefit to Harvests of Photosynthetic Marine Biomass : A Holistic Systems Perspective on Harvesting Marine Microalgae, Cyanobacteria, and Macroalgae

    Author : Joseph Pechsiri; Fredrik Gröndahl; Maria Malmström; Angela Wulff; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Industrial Ecology; Industriell ekologi;

    Abstract : As a result of increasing environmental burdens from anthropogenic activities andresource scarcity, interest for the development of solutions utilizing photosyntheticmarine biomass has also been increasing in both academia and industries. Medium tolarge scale production and harvest of photosynthetic marine biomass have beenpracticed to achieve numerous services, including improving tourism industries,production of biofuels, and production of food/feed. READ MORE

  6. 4. Inference and management of populations in variable environments

    Author : Niclas Jonzén; Evolutionär ekologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; habitat selection; environmental variability; Population dynamics; harvesting; time series analysis; model selection; Ecology; Ekologi;

    Abstract : Population dynamics in space and time are manifested as changes in the distribution and abundance of organisms. To couple such patterns to the underlying processes is a central question in ecology and also key to successful management. READ MORE

  7. 5. Potential impact of climate change on European agriculture: a case study of potato and Colorado potato beetle

    Author : Bakhtiyor Pulatov; Institutionen för naturgeografi och ekosystemvetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Colorado potato beetle; climate change; day length; degree day model; frost damage; distribution; temperature; potato; regional climate model; synchrony;

    Abstract : European agriculture is facing the challenge of managing the impact of climate change on food security. Agriculture in a northern temperate climate is likely to benefit from higher temperature and longer growing season while, in the south, crop productivity is likely to decline. READ MORE