Essays about: "Organic"

Showing result 1 - 5 of 1382 essays containing the word Organic.

  1. 1. Effects of land use on wetland carbon storage and ecosystem services in the tropics : A first estimation investing rural wetlands in central and eastern Uganda

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Astrid Hedman; [2019]
    Keywords : tropical ecosystems; wetlands; carbon stocks; ecosystem services; climate change;

    Abstract : Wetlands provide important ecosystem services (ES) by storing large amounts of organic carbon (OC) and being of high biological, cultural, and economical value. Uganda is covered by vast wetland areas but has with a booming population rapidly been decreasing due to pressure on lands. READ MORE

  2. 2. Analysis of the distribution of plant nutrients in a biogas production system : a look at VH Biogas, co-digesting manure from several farms

    University essay from SLU/Dept. of Soil and Environment

    Author : André Johansson; [2019]
    Keywords : biogas; digestate; manure; nutrients;

    Abstract : This study examined nutrient flows in a system where 20 farms deliver manure to a biogas plant for digestion, and then receive digestate back. Some other substrates were also anaerobically digested at the plant e.g. slaughter residues. READ MORE

  3. 3. The Po Delta Biosphere Reserve: Management challenges and priorities deriving from anthropogenic pressure and sea level rise

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Damiano Vesentini; [2019]
    Keywords : geography; GIS; environmental pressure; water quality; nutrient accumulation; rising sea level; climate change; value for conservation; Earth and Environmental Sciences;

    Abstract : The Po Delta Biosphere Reserve is located in Northern Italy and has attained recognition by UNESCO in 2015 due to its unique natural and cultural value. The reserve covers an area of approximately 140 000 hectares, supporting a human population of 118 000, as well as a complex mosaic of ecosystems, which are found in this transitional waters landscape. READ MORE

  4. 4. Stratigraphy and dating of a lake sediment record from Lyngsjön, eastern Scania : human impact and aeolian sand deposition during the last millennium

    University essay from Lunds universitet/Geologiska institutionen

    Author : Marijana Stevic; [2019]
    Keywords : aeolian activity; human impact; geochemistry; lake sediments; pollen; Earth and Environmental Sciences;

    Abstract : A small lake in north-eastern Scania, southern Sweden, Lake Lyngsjön, reveals a long history of aeolian sand drift based on a 3 meter long sediment sequence covering the last approximately 1400 years. Human impact, primarily through intensified land use and decreased forest cover, has periodically led to increased aeolian sand drift both locally and regionally. READ MORE

  5. 5. Occurrence and fate of organic micropollutants (OMPs) in Lake Mälaren

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Anna-Lena Rehrl; [2019]
    Keywords : multi-residue method; UPLC-MS MS; SPE; organic micropollutants; surface water;

    Abstract : The main objective of this study is to investigate the occurrence and fate of organic micropollutants (OMPs) in surface water in Lake Mälaren over one year, including their seasonal variations, correlations between compounds, spatial and vertical distribution. The water samples were enriched with solid phase extraction (SPE) and subsequently analyzed by ultra-high pressure liq-uid chromatography tandem mass spectrometry (UPLC-MS/MS). READ MORE