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The effect of prescribed burning on Pulsatilla vernalis at Marma firing range in Sweden
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för biologisk grundutbildning.
2021 (engelsk)Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
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.

sted, utgiver, år, opplag, sider
2021. , s. 7
Emneord [en]
prescribed burning, nature conservation, threatened species
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-447355OAI: oai:DiVA.org:uu-447355DiVA, id: diva2:1573648
Eksternt samarbeid
Länsstyrelsen Uppsala
Utdanningsprogram
Bachelor Programme in Biology / Molecular Biology
Veileder
Examiner
Tilgjengelig fra: 2021-06-28 Laget: 2021-06-26 Sist oppdatert: 2021-08-04bibliografisk kontrollert

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