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Samband mellan berggrund och vegetation: Grönstensområden och skyddad natur
Linnaeus University, Faculty of Arts and Humanities, Department of Cultural Sciences.
2018 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Mafic bedrock being beneficial to vegetation is a relationship that is being mentioned in different kinds of nature related litterature. This relationship is however not always explained and other factors may be as important as, or even more influential than, the bedrock content.

In this study the relationship between mafic rock and protected areas of nature is being examined, based on the following questions.

-          How does geology, with respect to bedrock content and weathering, create benign conditions for vegetation?

-          To what extent is the environment on mafic bedrock, or in its proximity, often judged as worth protecting?

The theoretical basis for the study is soil formation regarding parent material, based on Jenny´s formula, and weathering according to the Goldich dissolution series.

The method used is a comparison between maps showing bedrock and maps showing areas with protected nature. The protected areas are considered as connected to the mafic bedrock if they are within the mafic area, or up to 2 km from the mafic area in the direction of the ice movement during the last ice age (Weichsel) in Sweden.

The mainland of the municipality of Oskarshamn, on the southeast coast of Sweden, is used for a case study. The bedrock in this area is mainly felsic, with some minor areas being mafic.

The result shows a higher degree of protected nature, for the types “naturreservat” and ”Natura 2000”, on mafic bedrock, or in the vicinity of the mafic area, than for felsic bedrock.

The result for Oskarshamn is compared to mafic bedrock areas around Åseda and Fagerhult and to the limestone area around Vintrosa. For all of these three cases there are areas of protected environment, within or in the vicinity of the studied bedrock areas.

Although there seems to be a relationship between mafic bedrock and protected nature, other factors need to be considered as well. The influence of topography, access to water, local climate and e.g. the particle size of the soil, may contribute considerably to the content and distribution of the vegetation at a specific place.

Place, publisher, year, edition, pages
2018. , p. 46
Keyword [en]
bedrock, mafic, felsic, mineral, weathering, parent material, vegetation, protected nature
National Category
Physical Geography
Identifiers
URN: urn:nbn:se:lnu:diva-69988OAI: oai:DiVA.org:lnu-69988DiVA, id: diva2:1175945
Subject / course
Geography
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Examiners
Available from: 2018-01-19 Created: 2018-01-19 Last updated: 2018-01-19Bibliographically approved

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Citation style
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