Sökning: "lichen"
Visar resultat 1 - 5 av 113 uppsatser innehållade ordet lichen.
1. Biologisk mångfald på urbana begravningsplatser : från välvårdat till välmående
Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvårdSammanfattning : With a thorough literature study this paper aims to pinpoint several biological features that in some way functions to preserve and/or benefit biodiversity in urban environments and, if possible, specifically urban cemeteries. This compilation will then be used as a tool to compare if similar biological features are present in the urban cemeteries, we in our case study have chosen to examine. LÄS MER
2. 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 geovetenskapSammanfattning : 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. Arbete med biologisk mångfald på Kungliga Djurgården : med fokus på rödlistade och invasiva arter
Kandidat-uppsats, SLU/Dept. of EcologySammanfattning : Fler och fler arter hotas av förändrad markanvändning, klimatförändringar, spridning av invasiva arter m.m. För att motverka den negativa utvecklingen har urbana grönområden blivit allt viktigare. LÄS MER
4. Veteranisering av ek (Quercus robur) : Effekten på artrikedomen av lavar efter tio år
Kandidat-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)Sammanfattning : Oaks function as habitat for a myriad of species including 300 species of lichens. Many of the associated species, which are included on the Swedish red-list, depend on old oaks with hollows and deep bark fissures and hence their future is threatened due to a lack of middle-aged oaks. LÄS MER
5. 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 CentreSammanfattning : 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