Search for dissertations about: "Saline soils"

Showing result 1 - 5 of 6 swedish dissertations containing the words Saline soils.

  1. 1. Soil salinity as a driver of microbial community structure and functioning

    University dissertation from Lund University, Faculty of Science, Centre for Environmental and Climate Research (CEC)

    Author : Kristin Rath; [2017-12]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Soil salinization; Soil Microbiology; soil microbial community; Bacteria; Aerobic; Fungi; Drying-rewetting; Microbial growth; Microbial biomass; Soil respiration; salinity tolerance; Saline soils; Salinity gradient;

    Abstract : Soil salinization is a pressing agricultural problem in many areas of the world, particularly in areas heavily reliant on irrigation agriculture. While the negative effects of salinity on crop plants have been widely studied, its effects on soil microorganisms have received less attention, and the impact of soil salinity on both microbial community structure and functioning is not well understood. READ MORE

  2. 2. Structure and function of microbial communities in acid sulfate soil and the terrestrial deep biosphere

    University dissertation from Växjö : Linnaeus University Press

    Author : Xiaofen Wu; Mark Dopson; Ricardo Amils; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; molecular phylogeny; acid sulfate soils; metal; acidophiles; deep biosphere; oligotrophy; biofilm formation; metagenome; binning; metabolism; Mikrobiologi; Microbiology;

    Abstract : This thesis describes the use of different DNA sequencing technologies to investigate the structure and function of microbial communities in two extreme environments, boreal acid sulfate soil and the terrestrial deep biosphere.The first of the two investigated environments was soils containing un-oxidized metal sulfides that are termed ‘potential acid sulfate soil’ (PASS) materials. READ MORE

  3. 3. Condensation irrigation a combined system for desalination and irrigation

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Jenny Lindblom; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vattenteknik; Water Resources Engineering;

    Abstract : Condensation Irrigation (CI) is a new irrigation method that combines desalination and subsurface irrigation by making use of saline water for supplying clean irrigation. In this system, solar stills are used for evaporating non-potable water, and the formed vapour heats and humidifies the ambient air above the water surface. READ MORE

  4. 4. Nutrient balance and salinity stress in arbuscular mycorrhizal fungi

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Edith Hammer; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Inoculum; Glomalin; Fatty acids; Osmolyte; Organic matter; K; Na; Salinity; Symbiotic exchange; Phosphorus P; Carbon C; PIXE; Arbuscular mycorrhizal fungi; Rhizobium;

    Abstract : Earth’s primary production depends to a considerable extent on the mycorrhizal symbiosis, since mycorrhizal fungi supply their host plant with important mineral nutrients. I examined the influence of different nutrient regimes on the fungal partner in the arbuscular mycorrhizal symbiosis. READ MORE

  5. 5. Molecular and Metabolic Aspects of Plant and Bacterial Salt Tolerance

    University dissertation from Department of Pure and Applied Biochemistry, Lund University

    Author : Peter Olsson; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biotechnology; Bioteknik; metabolism; gamma-aminobutyric acid; Nicotiana tabacum; salinity; hypoxia; heamoglobin; microarray; glycine betaine; NaCl; GABA; Vitreoscilla; calmodulin; Esherichia coli; tobacco; Biokemi; Metabolism; Biochemistry; Arabidopsis;

    Abstract : Salt stress is one of the historically as well as potentially largest agriculture problem humans have faced. Researchers have investigated and tried to solve this problem for a long time. Over 20 reviews have been written on this topic the last five years. READ MORE