Sökning: "epiphytic lichens"

Visar resultat 1 - 5 av 34 uppsatser innehållade orden epiphytic lichens.

  1. 1. Förekomst och spridning av hänglavar från äldre skogar till unga tidigare avverkade områden i Västerbottens inland

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

    Författare :Emma Maksimova; [2023]
    Nyckelord :Lichens; Dispersal; Picea abies; Pinus sylvestris; Epiphytic; Hair lichens; Alectoria; Bryoria; Usnea;

    Sammanfattning : The Swedish forestry and the use of clearcutting models has resulted in great losses of older forests in Sweden, resulting in several species being affected negatively. Hair lichens are important organisms that are providing several ecological functions in forest ecosystems and are declining due to being associated with older forests with high continuity. LÄS MER

  3. 2. Relations between tree and habitat characteristics and the epiphytic lichen flora on oak : a case study from Lövön, Bohuslän

    Kandidat-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Julia Siegel; [2023]
    Nyckelord :Epiphytic lichens; Tree characteristics; Habitat characteristics; Oak; Biodiversity; Natural values; Light availability;

    Sammanfattning : Oak-rich forests and wooded pastures harbor diverse and distinct epiphytic lichen flora with many rare and threatened species. As these habitats have been subject to a substantial decline and degradation over the past centuries, oak woodlands have progressively come into focus for preservation. LÄS MER

  4. 3. Lavar i skogsöar i en fragmenterad skogsmiljö

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

    Författare :Christian Mendez From; [2023]
    Nyckelord :Boreal forest; Fragmentation; Habitat; Lichenes; Island biogeography; Species-area concept.;

    Sammanfattning : Epiphytic lichens are important species in the forest ecosystem. The Swedish forestry model affects them by fragmenting large old continuous forests. These fragments could be used as islands in a test of MacArthur and Wilsons theory of island biogeography. LÄS MER

  5. 4. Hänglavsförekomst i olika kantzoner : En studie i skogarna kring Fällfors, Skellefteå kommun

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

    Författare :Sara Persson; [2023]
    Nyckelord :Epiphytic lichen; Edge effects; Forest fragmentation; Alectoria; Bryoria; Usnea; Canopy opening;

    Sammanfattning : Epiphytic lichens require an even climate (no major changes in temperature and humidity) and continuity in the forest to thrive and grow, but forestry and its clear cutting destroys these habitats. The consequences are particularly serious when it occurs in forests with a high degree of management continuity. LÄS MER

  7. 5. Inventering av mångfalden av lavar i en produktionsskog jämfört med en barrblandskog

    Kandidat-uppsats, Högskolan i Halmstad

    Författare :Sigrid Gustafsson; Nellie Rolandsson; [2023]
    Nyckelord :;

    Sammanfattning : Lichens are complex organisms that can live at extreme places, at the same time they are important for several ecosystem services but also sensitive to forestry, air pollution and climate change. Something that several studies on lichens have concluded is that the lack of old trees or trees with a large circumference affects many species of lichens, and this is a consequence of today's forestry in Sweden. LÄS MER