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Effekter av luftföroreningar på lavar och grönalger på lind i Norrköpings kommun
Linköping University, Department of Physics, Chemistry and Biology, Biology. Linköping University, The Institute of Technology.
2012 (Swedish)Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
Abstract [sv]

Syftet med denna studie var att undersöka vilka effekter luftföroreringar har på lavar och grönalger som växer på lindar, genom att jämföra lavfloran i urban miljö och i landsbygdsmiljö. Mer specifikt var syftet att utreda hur avstånd till närmaste väg, trafikintensitet och trädets exponerade respektive icke-exponerade sida gentemot en väg påverkar lavfloran i urban miljö. 18 utvalda lavarter samt grönalger eftersöktes på 86 lindar i urban miljö och 37 i landsbygdsmiljö inom Norrköpings kommun. Resultaten visade att artantalet, samt förekomsten och täckningsgraden för flertalet lavar var större i landsbygdsmiljö jämfört med urban miljö. Kortare avstånd till närmaste väg och hög trafikintensitet hade negativ effekt på flertalet lavar. I båda fallen visades det motsatta för grönalger. Det fanns ingen skillnad i förekomster av lavar om de exponerades utåt mot vägen eller bort från vägen.

Abstract [en]

The aim of this study was to investigate which effects air pollution has on epiphytic lichens and green algae in urban and rural environment, respectively.  More specifically, the aim was to investigate the effects on the lichen flora of distance to the nearest road, traffic volume and to compare the effect of tree sides exposed and not exposed to roads in the urban environment. 18 selected lichen selected species and green algae as a taxonomic group where searched on 86 lime trees in urban and 37 in rural environments in the Norrköping municipality. The species number was higher and the majority of the lichens occurred more often and showed a higher cover on trees in rural areas compared to trees in the urban environment. Shorter distance to the nearest road and high traffic volume had a negative impact on the majority of lichens. In both cases the opposite was shown for the green algal group. The lichens occurred equally often on the sides of the trees that were exposed to the road as on the sides that were not exposed to the road. 

Place, publisher, year, edition, pages
2012. , 14 p.
Keyword [sv]
Air pollution, green algae, lichen, lime tree, roads, traffic volume.
National Category
Ecology
Identifiers
URN: urn:nbn:se:liu:diva-79072ISRN: LiTH-IFM-EX--12/2675--SEOAI: oai:DiVA.org:liu-79072DiVA: diva2:538191
Subject / course
Ecology
Presentation
2012-05-31, A2, Linköpings universitet, Linköping, 10:15 (Swedish)
Uppsok
Life Earth Science
Supervisors
Examiners
Available from: 2012-08-07 Created: 2012-06-28 Last updated: 2012-08-07Bibliographically approved

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CiteExportLink to record
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