Sökning: "dead wood diversity"

Visar resultat 1 - 5 av 43 uppsatser innehållade orden dead wood diversity.

  1. 1. Utvärdering av biotopvårdande åtgärder i Grimåsbäcken. En analys av fysikaliska egenskaper och sammansättning av makroevertebrater.

    Kandidat-uppsats, Göteborgs universitet / Instiutionen för biologi och miljövetenskap

    Författare :Björn Andermo; [2024-01-22]
    Nyckelord :Channelized streams; retention; biotope preservation; macroinvertebrates; bottom substrate; woody debris.;

    Sammanfattning : Many streams have been exposed to extensive anthropogenic impact for the benefit of forestry and agriculture. The effects has mainly been channelization characterized by lowered and straightened channels. This homogeneous morphology leads to decreased ability to retain water as well as lost connection to the floodplain. LÄS MER

  3. 2. Vedlevande skalbaggar 10–20 år efter brand i tallskog : en jämförelse mellan hällmark och produktiv mark

    Kandidat-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :KajsaLisa Olsson; [2024]
    Nyckelord :Tallimpediment; biologisk mångfald; vedlevande skalbaggar; naturvårdsbränning; Pinus sylvestris;

    Sammanfattning : The Swedish boreal forests have changed drastically in the last century. Intensive forestry with clear-cuttings and fire-prevention, cause a lack in dead wood diversity and volume. The current research on forests mainly focuses on productive forests and there is a knowledge gap regarding the importance of low-productive forest for biodiversity. LÄS MER

  4. 3. Analys av föda för vitryggig hackspett och rödlistade vedlevande skalbaggar : utvärdering av tre olika behandlingar

    Kandidat-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Emma Mattsson; Lena Ostermann; [2023]
    Nyckelord :Vitryggig hackspett; vedlevande skalbaggar; paraplyart; rödlista; biologisk mångfald; död ved; restaurering;

    Sammanfattning : Den vitryggiga hackspetten har sedan 1950-talet blivit en sällsynt art i det svenska landskapet. Nedgången beror främst på det moderna skogsbruket där barrskog till stor del har ersatt blandbestånd och gammal lövskog. LÄS MER

  5. 4. Restoration effects on benthic macroinvertebrate diversity and community composition in a river

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Fredrik Laggar; [2023]
    Nyckelord :Benthic invertebrates; diversity; communtiy composition;

    Sammanfattning : Physical restoration efforts are common methods to restore running waters containingdegraded ecosystems due to anthropogenic activities such as irrigation, ditching, dammingand flood prevention. The goal is usually to restore waters to a more natural state, creatingmore physically complex habitats supporting a larger number of species of both fish andinvertebrates, hence increasing biodiversity. LÄS MER

  7. 5. Impact of forest management on the diversity of wood decaying fungi : A comparison between two closely related forests in southern Sweden

    Kandidat-uppsats, Linköpings universitet/Biologi

    Författare :Johanna Sollén Mattsson; [2022]
    Nyckelord :Biodiversity; Boreal forests; Forest management; Forestry; Natural forests; Wood decaying fungi;

    Sammanfattning : Modern forestry practices have negative effects on many organisms because they change the forest’s disturbance dynamics, makes the forest’s structure less complex, and fragments old-growth forests. This study examined how commercial forestry practices affect the diversity of wood-decaying fungi, by comparing two closely related forests with different management in Östergötland, Sweden. LÄS MER