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The effect of prescribed burning on Pulsatilla vernalis at Marma firing range in Sweden
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Biology Education Centre.
2021 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Changes in habitat has led to a decline in biodiversity and many species being currently threatened. One of them is the spring pasque flower Pulsatilla vernalis, which grows on well- drained soils and is sensitive to competition. The species has in the past benefited from disturbances such as grazing, mowing and forest fires. Now that these no longer occur as frequently, it has been suggested that prescribed burning as a nature conservation act benefits P. vernalis. In this study, we have investigated whether prescribed burning in 2018 benefited a population of P. vernalis at Marma firing range outside Älvkarleby in Sweden. Due to unplanned windy conditions on the day of the prescribed burning, not the whole planned area was burned. This created a natural experiment that allowed us to compare burned areas (field and pine forest) with unburnt areas (field and pine forest). The study also includes data before and after the action. The results showed that the burned areas had an increase in the number of P. vernalis tufts per hectare, as well as the number of flower stalks per tuft. Although limited due to being a case study without replicates, this study supports the suggestion that prescribed burning benefits P. vernalis, both in open areas as well as in forests.

Place, publisher, year, edition, pages
2021. , p. 7
Keywords [en]
prescribed burning, nature conservation, threatened species
National Category
Environmental Sciences related to Agriculture and Land-use
Identifiers
URN: urn:nbn:se:uu:diva-447355OAI: oai:DiVA.org:uu-447355DiVA, id: diva2:1573648
External cooperation
Länsstyrelsen Uppsala
Educational program
Bachelor Programme in Biology / Molecular Biology
Supervisors
Examiners
Available from: 2021-06-28 Created: 2021-06-26 Last updated: 2021-08-04Bibliographically approved

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The full text will be freely available from 2026-06-01 14:37
Available from 2026-06-01 14:37

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CiteExportLink to record
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Output format
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