Essays about: "Ekoln"

Showing result 6 - 10 of 16 essays containing the word Ekoln.

  1. 6. Reconstructing the historic input of mercury in Lake Ekoln : A long-term (millennia) perspective derived from a sediment core

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

    Author : Clara Rojas Rodríguez; [2015]
    Keywords : mercury; sediments; aquatic ecosystem; Lake Ekoln.;

    Abstract : Anthropogenic activities are often considered to be the main sources of mercury (Hg) found in aquatic systems. The aim of this study was to reconstruct the historic input of Hg to a large lake (Lake Ekoln) situated downstream the City of Uppsala using a dated sediment core. READ MORE

  3. 7. Agricultural history and its effect on Lake Ekoln, central Sweden : A study based on historical maps and the use of sediment as a proxy for lake-water phosphorus

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

    Author : Joel Avenius; [2015]
    Keywords : historical maps; sediment inferred phosphorus; eutrophication; agriculture;

    Abstract : Agriculture and the use of arable land have long been assumed to be one of the key drivers behind eutrophication of lakes. However, little is known about how early agriculture has affected lakes in the past. READ MORE

  4. 8. Structural and Functional Changes in a Lake Bacterial Community Exposed to Multiple Stress Regimes

    University essay from Stockholms universitet/Stockholm Resilience Centre

    Author : Philipp Siegel; [2015]
    Keywords : bacterial community; microbial community; resilience; resistance; microbiology; environmental change; limnology; Sweden; Ekoln; bacterial productivity; enzyme activity; DOM; spectrometry; T-RFLP; NMDS; environmental fitting; microbial ecology;

    Abstract : Bacterial community resilience and resistance may play an important role in a world affected by climate change and increasing environmental disturbances. In this study we examined the resilience of a bacterial lake community from Lake Ekoln, Sweden, under increased environmental stress. READ MORE

  5. 9. From source to tap : a case study of organic contaminants in raw and drinking water in the region of Uppsala, Sweden

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

    Author : Philipp Klöckner; [2015]
    Keywords : drinking water; water quality; raw water; water contamination; from source to tap; water treatment; persistent pollutants; pharmaceuticals; pesticides; surface water; screening; Sweden; Lake Ekoln; Lake Mälaren; SPE; LC-MS; PPCP;

    Abstract : In this study, water samples from the surroundings of Uppsala were examined for residues of pesticides, pharmaceuticals and other contaminants characteristic for human fecal contamination. The aim was to perform a screening of water samples to investigate the level of pollution with the mentioned compound groups. READ MORE

  6. 10. Paleoenvironment and shore displacement since 3200 BC in the central part of the  Långhundraleden Trail, SE Uppland

    University essay from Institutionen för naturgeografi och kvartärgeologi (INK)

    Author : Christos Katrantsiotis; [2013]
    Keywords : Shore displacement; isostatic variability; Uppland; saddle-point; paleoenvironment;

    Abstract : In this study, litho-, bio- and chronostratigraphic investigations combined with RTK GPSleveling have been carried out to reconstruct the paleoenvironment in the central part of theLånghundraleden Trail. The area displays four shallow lake basins of varyingmorphologies. The basins are now covered with peat as a result of infilling and overgrowth. READ MORE