Sökning: "Clear-cut age"

Visar resultat 11 - 15 av 22 uppsatser innehållade orden Clear-cut age.

  1. 11. Undersökning av näringsläckage till akvatiska miljöer : Kartläggning av näringsstatusen i vattenmiljön för området kring Byssträsket, Lycksele kommun

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Simon Larsson; [2015]
    Nyckelord :Eutrophication; aquatic environment; logging; clear-cut; algal bloom;

    Sammanfattning : During the summer of 2013 the environmental office at Lycksele Municipality received a complaint, regarding algal blooms at the stream outlet between the lakes Kalven and Byssträsket in the southern parts of Lycksele Municipality. No deeper studies were made to ensure what could have caused the bloom. LÄS MER

  3. 12. Bioaccumulation of poly- and perfluoroalkyl substances (PFASs) and mercury in European perch (Perca fluviatilis) : Spatial distribution and forest clear-cut (CC) effects in Swedish lakes

    Master-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

    Författare :Nesrin Negm; [2015]
    Nyckelord :PFAS; perfluoroalkyl substances; polyfluoroalkyl substances; European perch; forest clear-cut; bioaccumulation; lakes; mercury;

    Sammanfattning : Recently poly- and perfluoroalkyl substances (PFASs) have gained increasing attention due to their ubiquitous distribution in the environment and adverse effects to human and wildlife. PFASs have unique chemical and physical properties such as surfactant characteristics and are used for many industrial applications (e.g. LÄS MER

  4. 13. Forest harvest effects on mercury in European perch

    L3-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

    Författare :Jaclyn Martin; [2014]
    Nyckelord :mercury; forestry; fish; lake;

    Sammanfattning : Previous studies done on water chemistry found that clear-cutting forests increases methylmercury (MeHg) concentrations. In recent years, few studies have been conducted on what effect forestry operations have on mercury (Hg) concentrations in biota, more specifically on fish. LÄS MER

  5. 14. Effekter av kalavverkning på mindre boreala sjöars vattenkvalitet

    Kandidat-uppsats, Institutionen för ekologi, miljö och geovetenskap

    Författare :Linda Lundgren; [2014]
    Nyckelord :Forestry; clear-cut; lakes; DOC; TN;

    Sammanfattning : Forestry is an important industry in Sweden, with clear-cut as the most commonly used method for harvesting. Here the long-term impact of clear-cut on lake water quality (dissolved organic carbon (DOC), nitrogen, phosphorus and pH) has been investigated, based on 23 lakes sampled during autumn. LÄS MER

  7. 15. Trädens utveckling efter att de har lämnats som naturhänsyn : tillväxt, mortalitet och strukturell förändring 6-18 år efter avverkning

    Magister-uppsats, SLU/Dept. of Ecology

    Författare :Samuel Sjöberg; [2013]
    Nyckelord :naturhänsyn; skogsavverkning; hänsynsytor; tillväxt; trädmortalitet; död ved;

    Sammanfattning : Today green tree retention, together with leaving dead wood, is a common practice with the aim to reduce negative impacts on biodiversity and environment due to clear-felling. To better understand whether this conservation practice also makes a long-term difference, it is important to know what happens to these trees after harvest. LÄS MER