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1	Barkens pH-påverkan på den epifytiska Lobaria pulmonaria / The barks pH impact on the epiphytic Lobaria pulmonaria Tanskanen, Linda January 2024 (has links) Artbeståndet av Lunglaven (Lobaria pulmonaria) som återfinns idag är kvarlevor från ett tidigare mer vidsträckt utbredningsområde. Lunglaven har en oansenlig nyetablering och kvarvarande populationen är sällan fertil. För att på bästa sätt kunna rädda denna art från att dö ut bör man veta vilken typ av levnadsvillkor som krävs och vilka hot som arten står inför. Syftet med den här studien var att undersöka hur barkens pH påverkar lunglaven Barkprover från 50 olika träd samlades in genom raspning den 1 maj 2019 och analyserades på labb den 2 maj 2019. Ytterligare en dataanalys gjordes med hjälp av träddata från Länsstyrelsen Västmanland. Resultatet från analyserna tyder på att barkens pH har betydelse för lunglaven och att lavens täckning skiljer sig signifikant åt mellan de olika trädslagen. Lind (Tilia spp) var det träd som hade högst individantal och täckningsgrad följt av lönn (Acer platanoides). Ek (Quercus spp) hade lägst individantal och täckningsgrad i denna studie. Högre täckningsgrad av lunglav på träd visar att levnadsvillkoren är mer optimalt för arten. Flest trädobservationer med lunglav dominerades av arterna ask (Fraxinus exelsior), asp (Populus spp). Vilket tyder på att dessa träd har goda livsmiljöer för lunglaven med sin barkstruktur och barkkemi. / The lungwort (Lobaria pulmonaria) population that remains today is a relic from a wider range area. Lungwort do not establish as much now a days as it used to and the remaining population is rarely fertile. In order to save this species from extinction one has to know what type of living conditions are required and what type of threats this species faces. The purpose of this study was to investigate how the pH of the bark impact the Lungwort. Bark samples was collected from 50 different trees by rasping 1 of May 2019 and were analysed in a laboratory 2 May 2019. Further data analys was done using tree data from the County administrative board Västmanland. The result of the analysis suggests that the pH on bark has a significant impact on lungwort and that the coverage differs between tree species. A higher degree of coverage on trees shows that the living conditions are more optimal for the lungwort. Linden (Tilia spp) was the tree with the highest number of individuals and the degree of coverage followed by maple (Acer platanoides). Oak (Quercus spp) had the lowest number of individuals and degree of coverage in this study. Most tree observations with lungwort were dominated by the species ash (Fraxinus exelsior) and aspen (Populus spp). Which suggest that these trees have a good habitat for lungwort with their bark structure and bark chemistry. Lungwort Lobaria pulmonaria Bark pH lunglav Lobaria pulmonaria ädellövträd Natural Sciences Naturvetenskap
2	Effekter av naturvårdsgallring på förekomsten av lunglav på ädellövträd / Effects of conservation thinning on the presence of epiphytic lichen Lobaria pulmonaria on broad leaved deciduous trees Björkroth, Jennie January 2015 (has links) Sun-exposed broad leaved deciduous trees have a great species diversity of epiphytic lichens. In Europe, these trees have decreased dramatically in number as wooded pastures have become overgrown with trees and bushes, and broad leaved deciduous stands have been replaced by planted coniferous trees. These are the main reasons for many lichens depending on deciduous trees being red-listed. Epiphytic lichens in overgrown areas could benefit from conservation thinning, but few studies have been performed on how this type of cutting affects the lichens. In a previous study, the presence of red-listed epiphytic lichens in a broad leaved deciduous forest was examined. After the study, thinning of trees and bushes was made. Here we study the effects of this thinning on Lobaria pulmonaria. We tested possible factors that may affect the growth of L. pulmonaria, and if there were any differences in incidence and vitality of the lichen between managed and unmanaged stands. Since Dutch elm disease and ash dieback are well spread in the area, we wanted to see if they also affected the growth of L. pulmonaria. There were no differences in incidence and growth between managed and unmanaged stands. The results were unexpected since other studies show that, for instance, increased sun exposure often has a great effect on the growth of lichens. Many elms and ashes were dead or dying and had a significant negative effect on the change of number of lobes and the lobe surface. The diseases of the trees can thus be assumed to be the greatest cause of why the lichens in the managed stand did not benefit from thinning. Conservation thinning Lobaria pulmonaria broad leaved deciduous trees sun exposure Dutch elm disease ash dieback Sweden Naturvårdsgallring Lobaria pulmonaria ädellövträd solexponering almsjuka askskottsjuka Sverige
3	Populationsutveckling hos lunglav, Lobaria pulmonaria, kring sjön Möckeln i sydvästra Småland / Population changes of lungwort lichen, Lobaria pulmonaria, around lake Möckeln in southern Sweden Lövstrand, Martin January 2024 (has links) The most prominent threats to epiphytic lichen funga are modern industrial forestry and air pollution. Macrolichens with cyanobacteria, cyanolichens, are particularly vulnerable. One of these is the lungwort lichen, Lobaria pulmonaria. The lungwort lichen is not among the most threatened species in Sweden, but the populations have nevertheless decreased significantly during the last 100 years. One area where the lungwort lichen still can be found is around lake Möckeln, in the south of Sweden. In earlier inventories 94 trees with Lobaria pulmonaria were identified. The aim of this study was to investigate the population changes of L. pulmonaria in this area as well as the ecology and management options for this species. My questions were: 1. Does the population of L. pulmonaria around the lake Möckeln decrease? 2. Is there a positive correlation between the circumference of the trees and the coverage of lichens? 3: Is there a positive correlation between the number of individuals and coverage? 4: Is there a positive correlation between the circumference of the trees and the number of thalli? 5: Is there a negative correlation between the size of the populations and the proximity to the lake? Between 2001 and 2024 the total population decrease was 23%. There was no correlation between circumference and coverage or number of individuals. No effect of nearby water bodies on population size could be detected. There was, however, a strong correlation between coverage and the number of thalli. This result is not obvious since thalli can vary substantially in size. The results which suggest a decline are consistent with earlier studies in southern Sweden which also show a decrease of the L. pulmonaria populations in the south of Sweden. Since L. pulmonaria forests have high conservation values I propose that all the sites investigated in this study should receive protection as nature preserves. Lunglav Lobaria pulmonaria lichenologi populationsbiologi suboceaniska lavar täckning metapopulationsbiologi Other Biological Topics Annan biologi
4	Manganese as a site factor for epiphytic lichens / Mangan als Standortfaktor für epiphytische Flechten Paul, Alexander 27 April 2005 (has links) No description available. 580 Pflanzen (Botanik) WWH 000 WVR 200 WHA 000 Mathematics and Natural Science Flechtenökologie Hypogymnia physodes Lecanora conizaeoides Bryoria fuscescens Alectoria sarmentosa Lobaria pulmonaria Nephroma helveticum Leptogium saturninum Mangan Schwermetalltoleranz Ultrastruktur Trebouxia Nostoc Röntgenmikroanalyse Chlorophyllfluoreszenz lichen ecology Hypogymnia physodes Lecanora conizaeoides Bryoria fuscescens Alectoria sarmentosa Lobaria pulmonaria Nephroma helveticum Leptogium saturninum manganese heavy metal tolerance ultrastructure Trebouxia Nostoc X-ray microanalysis chlorophyll fluorescence 42.44 42.48 42.51 42.41

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