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Skogsväxters utbredning i relation till pH, latitud och trädsammansättning: Exkursion för ekologiundervisning
Linköpings universitet, Institutionen för fysik, kemi och biologi, Biologi.
2016 (svensk)Independent thesis Advanced level (professional degree), 10 poäng / 15 hpOppgave
Abstract [en]

This study investigated the impact of three edaphic factors on the distribution of forest plants in Sweden. Based on 2657 plots with 22 common species, Canonical Correspondence Analysis (CCA) and Generalized-linear-model (GLM) were performed with pH measurements in the top layer of the soil, latitude and deciduous tree proportion as explanatory variables. Variation of the species occurrence could to a substantial degree be explained by pH, latitude and proportion of timber volume of deciduous tree species. Furthermore, the majority of species were affected by the studied environmental variables. Therefore, these factors have an important role in the ecological interactions in the forest. All species also showed broad pH-niches with many occurrences spread out within the species entire pH-range. Finally, the study relates to educational science through designing a meaningful excursion for secondary school when teaching ecology.

sted, utgiver, år, opplag, sider
2016. , s. 20
Emneord [en]
Forest herb, soil pH, latitudinal gradient of Sweden, Canonical Correspondence Analysis (CCA), Generalized-linear-model (GLM), excursion, secondary school, ecology
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-131633ISRN: LIU-LÄR-BI-A-EX--16/125--SEOAI: oai:DiVA.org:liu-131633DiVA, id: diva2:980010
Fag / kurs
Biology
Utdanningsprogram
Teacher Education
Presentation
2016-06-01, 11:21 (svensk)
Veileder
Examiner
Tilgjengelig fra: 2016-10-03 Laget: 2016-09-29 Sist oppdatert: 2016-10-03bibliografisk kontrollert

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Examensarbete Rebecka Carlsson(846 kB)66 nedlastinger
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