Essays about: "algal organic matter"

Showing result 1 - 5 of 7 essays containing the words algal organic matter.

  1. 1. Effects of microbial community coalescence in lake water at ice break-off

    University essay from

    Author : Christoffer Melhus; [2019]
    Keywords : Freshwater lakes; ice break-off; microbial community coalescence; dissolved organic matter; microbial enzymatic activity; primary production; photo degradation.;

    Abstract : The period of ice break-off in spring is a key event for many biogeochemical processes in lakes globallly. The biogeochemical processes occurring at ice break-off have the potential of influencing characteristics of lakes throughout spring and summer, including algal blooms and greenhouse gas emission. READ MORE

  2. 2. Lake Victoria - Carbon, Nitrogen, Phosphorus and Stable Isotope (δ13C) comparison between lake and catchment sediments

    University essay from Linköpings universitet/Tema Miljöförändring

    Author : Laxmi Gayatri Devi Basapuram; [2018]
    Keywords : Nutrients; Stable isotope δ13C ; Agriculture; Industrialization; Eutrophication;

    Abstract : Lake Victoria situated in East Africa faces an acute problem with eutrophication. Many reasons like agricultural production, industrialization, anthropogenic processes, the introduction of species, and economic activities have caused a stress to the overall well-being of the lake. READ MORE

  3. 3. Fluorescence probes: towards automatic coagulant dosing

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Daphné Lecellier; [2018]
    Keywords : Drinking water quality; Water treatment process; Coagulation; Microcystis aerugosa; algal organic matter; LC-OCD; EEM; powdered activated carbon; Alum;

    Abstract : There is a current lack of accurate tools to determine the concentration of cyanobacteria in situ.  Besides, cyanobacterial blooms have to be carefully monitored in reservoirs as they are more frequent because of climate change and can lead to potential released of toxins, along with other components. READ MORE

  4. 4. Variability and regulation of the planktonic respiratory quotient in a eutrophic lake (Lake Vombsjön) in summer 2016

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Karla Münzner; [2017]
    Keywords : Physical geography and ecosystem analysis; biogeochemistry; bacterioplankton respiration; eutrophic lake; carbon cycling; Lake Vombsjön; Earth and Environmental Sciences;

    Abstract : Bacterial respiration and biomass growth are important processes for carbon cycling in freshwater ecosystems and bacterial respiration is often quantified from measured O2 concentrations by using a respiratory quotient (RQ=O2 consumed to produce CO2, in moles) of 1. Recent studies have shown, however, that RQs can vary a lot in different aquatic ecosystems (0. READ MORE

  5. 5. Tracing the source of colourless carbon in an arctic lake on SW Greenland : Insights of organic matter origin from hydrogen isotope analyses of samples prepared using steam equilibration

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

    Author : Bror Holmgren; [2016]
    Keywords : Søndre Strømfjord; dissolved organic carbon; stable isotopes; steam equilibration;

    Abstract : Lakes play an important role in the global carbon (C) cycle as they process carbon from terrestrial (allochthonous) and within lake (autochthonous) sources and may store C over long periods of time. Some arctic lakes contain high concentrations of dissolved organic carbon (DOC) that does not absorb light and thus remains colourless. READ MORE