Essays about: "humic lakes"

Showing result 1 - 5 of 8 essays containing the words humic lakes.

  1. 1. Patterns and factors affecting brownification in a boreal river

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Emil Winqvist; [2021]
    Keywords : Bolmen; brownification; precipitation; discharge; sulfur deposition; land use; trend analysis; Technology and Engineering;

    Abstract : During the last decades a brownification of the lakes and streams in the northern hemisphere has been observed. The change has been attributed to an increase of organic content in the water, leached from the top soil layers, called humic substances. READ MORE

  3. 2. When age makes all the difference : Methane production in sediment of contrasting Swedish lakes

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Ursula Ronja Zellmer; [2020]
    Keywords : sediment; methane; limnology; biogeochemistry;

    Abstract : Lakes are a significant source of the powerful greenhouse gas methane (CH4) globally. Methaneis produced through microbial processes in anoxic sediments. Methane emission from lakes ishighly variable in space and time. READ MORE

  4. 3. Impact of different catchments on the Brownification of Lake Bolmen

    University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Author : Kaela Chileshe; [2020]
    Keywords : Brownification; dissolved organic carbon DOC ; Iron Fe ; water colour; landscapes; climate change;

    Abstract : Increased DOC and Fe concentrations from terrestrial landscapes has led to the browning of boreal surface waters. The negative societal and ecological impacts of brownification are increased cost of water purification, increased presences of algae and cyanobacteria, loss of ecosystem services and reduced recreational value. READ MORE

  5. 4. Photo-chemical reactivity of dissolved organic carbon in subarctic lakes from northern Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Hani Younes; [2020]
    Keywords : Photo-reactivity; DOM; subarctic lakes; EEM-PARAFAC. Brownification; Earth and Environmental Sciences;

    Abstract : Dissolved organic matter (DOM) is the major absorber of sunlight in most natural waters and a critical component of the carbon cycle in aquatic systems. The photochemical decomposition of DOM can have a significant impact on the landscape-atmosphere carbon exchange. READ MORE

  6. 5. Lakes are browner in the south than in the north of Sweden despite similar levels of dissolved iron

    University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Author : Fredrik Lindgren; [2019]
    Keywords : Brownification; DOC; dissolved iron; humic lakes; sulphur deposition; absorbance; climate change;

    Abstract : During recent decades many lakes have become browner in the northern hemisphere and more specific in Sweden. This process is called brownification. Brownification of lakes makes it more difficult to clean water to drinking water and may have negative ecological effects on biota. READ MORE