Sökning: "disturbance regime"

Visar resultat 1 - 5 av 22 uppsatser innehållade orden disturbance regime.

  1. 1. Restaurering av grässandhedar genom aktiv markstörning - en jämförelse av florans kolonisation av plöjningar och sandblottor på Revingefältet utanför Lund

    Master-uppsats, Lunds universitet/Examensarbeten i biologi

    Författare :Erik Borgström; [2023]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : The conservation value of sandy habitats for a flora and fauna adapted to open, light, dry, warm, and often nutrient-poor conditions, is well recognized. Today this environment is threatened by lack of disturbance, fragmentation and exploitation, acidification and increased levels of nitrogen and phosphorus. LÄS MER

  3. 2. What has happened on Swedish mires? The effects of drainage on vegetation changes over recent decades

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Anna Ljungqvist; [2022]
    Nyckelord :peatlands; mires; bogs; fens; sweden; vegetation; plant ecology; time trend; data; nfi; nils; climate change; global warming; mosses; sphagnum; afforestation; trees; wetland; presence; coverage; drainage; ditch;

    Sammanfattning : As they are not only the home of many threatened species, but also one of the main actors in the global carbon cycle, peatlands are highly valuable ecosystems. Human disturbance, in particular drainage for forestry and agriculture, has substantially changed the state of the world’s peatlands and will continue to do so. LÄS MER

  4. 3. Post-fire forest management methods in Sweden: Societal perception and biological aspects

    Kandidat-uppsats, Lunds universitet/Examensarbeten i biologi

    Författare :Julia Redegren Gomes; [2022]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : With an increasing global temperature, at rates twice as fast as the global average in the northern boreal forests, an increasing wildfire frequency is to be expected. Previous studies have shown that forest areas in Eurasia with high risk of wildfires today are expected to more than double in size in the following 30 years. LÄS MER

  5. 4. Go with the flow - can environmental flows save us? : A study of the flow patterns in Bredforsen and possibilities for the future

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

    Författare :Hilda Brynjarsdotter; [2022]
    Nyckelord :Riparian zone; Riparian vegetation; Riparian vegetation zones; Regulated rivers; Floodings; hydropower;

    Sammanfattning : Freshwater systems have, during human history, endured large-scale impacts. According to the water framework directive, measures must be developed to create a better environment for species in, and connected to, freshwater systems. Hydropower plants has caused loss of natural disturbance (e.g. LÄS MER

  7. 5. The Combined Influences of Canopy Openness, Browsing Protection, and Low Intensity Fire on the Natural Regeneration of Oak in Southern Sweden

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Benjamin Miles; [2022]
    Nyckelord :burn; browsing; disturbance; fire; light; oak; Q.robur; Q.petraea; ungulates;

    Sammanfattning : Whilst oak was historically prevalent in the landscape of temperate Europe, changes in the disturbance regime of forests have led to limited regeneration across its distribution. In this study, the fire oak hypothesis is tested to assess the tolerance of Quercus robur and Quercus petraea recruits (seedlings and saplings) to a low intensity burn, and how this response may differ depending on the presence of browsing and canopy openness. LÄS MER