Essays about: "external phosphorus load"

Found 4 essays containing the words external phosphorus load.

  1. 1. Framtidens vattenvård : en kvantifiering av internbelastningen av fosfor i Vansjön och Nordsjön i Norduppland

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

    Author : Caroline Agrillo; Jens Fölster Jens Fölster; [2021]
    Keywords : fosfor; internbelastning; eutrofiering; syrebrist; aluminiumbehandling; biomanipulation;

    Abstract : En kvantifiering av internbelastningen av fosfor gjordes i de eutrofierade sjöarna Vansjön och Nordsjön i Norduppland genom fysiokemisk mätning av vattnet och fraktionsanalys samt inkuberingsanalys av sediment. Mycket låga syrehalter mättes under vintern 2021 medan vattnet var övermättat på syre under våren detsamma året. READ MORE

  3. 2. Nutrient limitation for coastal areas and estuaries in the Baltic Sea : Applying linear regression analysis and TN/TP ratio to determine the limiting nutrient

    University essay from Uppsala universitet/Institutionen för ekologi och genetik

    Author : Magnus Persson; [2017]
    Keywords : Eutrophication; limiting nutrient; TP; TN; the Baltic Sea; coastal areas; mass-balance calculations; TN TP ratio; Redfield ratio; linear regression analysis; Eutrofiering; begränsande näringsämne; TP; TN; Östersjön; kustområden; linjär regressionsanalys; TN TP kvot; Redfield kvot; massbalansberäkningar;

    Abstract : The purpose of this study was to determine the limiting nutrient in a set of coastal areas and estuaries in the Baltic Sea. Although the subject as been studied for several decades, no clear consensus has been reached in the scientific community as to whether primary production is limited by phosphorus or nitrogen. READ MORE

  4. 3. A GIS based approach identifying phosphorus sources within the lake Flaten catchment in Salem, Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Stefan Rova; [2013]
    Keywords : internal phosphorus load; external phosphorus load; land cover data; modelled scenarios; export coefficients; eutrophication; total phosphorus; Physical Geography and Ecosystems analysis; GIS; catchment based; lake water quality; Lake Flaten; Earth and Environmental Sciences;

    Abstract : The purpose of this study has been to test if GIS based methods calibrated with limited local data can be used to determine the origin and quantity of phosphorus transport to and within a small eutrophic lake, and to assess the effects of this transport on the lake water quality. The lake studied is Lake Flaten in Salem municipality, Sweden. READ MORE

  5. 4. Hydrauliken i Ångersjöns fosforfällor : bestämning av flödesvägar och åtgärdsförslag för optimal fosforbindning vid avloppsrening med reaktiva filter

    University essay from SLU/Dept. of Soil and Environment

    Author : Ellinor Jansson; [2008]
    Keywords : fosforrening; Ångersjön; filtermaterial;

    Abstract : Discharge of untreated wastewater leads to unnaturally high levels of nitrogen and phosphorus in rivers, lakes and the sea, which results in unbalanced ecosystems with eutrophication and lack of oxygen. Part of the phosphorus in surface waters is coming from on-site wastewater treatment from scattered households with unsatisfactory purification. READ MORE