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The distribution of four grassland plant species in relation to landscape history of a Swedish rural area
Stockholm University, Faculty of Science, Department of Botany.
Stockholm University, Faculty of Science, Department of Botany.
Stockholm University, Faculty of Science, Department of Botany.
2007 (English)In: Annales Botanici Fennici, ISSN 0003-3847, E-ISSN 1797-2442, Vol. 44, no 6, 416-426 p.Article in journal (Refereed) Published
Abstract [en]

It is commonly agreed that landscape history is important for species distributions today. Here, we studied present-day regional population distribution and performance of four grassland species, the perennials Ranunculus bulbosus and Succisa pratensis, and the monocarpic "biennials" Carlina vulgaris and Tragopogon pratensis, in a Swedish rural landscape. We analysed the management history of their population patches, using vegetation maps from 1945 and 2001. Distributions of Succisa pratensis reflected the grassland occurrences in 1945 and Tragopogon pratensis was associated with the road network 60 years ago. Performance in different habitats also suggested an impact of land use on species distributions. For Ranunculus bulbosus and Carlina vulgaris the impact of landscape history was less obvious. Our results indicate that present-day distributions of some grassland species partly may be a legacy of previous semi-natural grassland patterns in rural Sweden, an insight that has valuable implications for assessments of long-term vulnerability of grassland species.

Place, publisher, year, edition, pages
2007. Vol. 44, no 6, 416-426 p.
Keyword [en]
management history, semi-natural grasslands, time lag
National Category
Botany
Identifiers
URN: urn:nbn:se:su:diva-24999OAI: oai:DiVA.org:su-24999DiVA: diva2:198697
Available from: 2005-11-28 Created: 2005-11-28 Last updated: 2017-12-13Bibliographically approved
In thesis
1. Local and regional dynamics of Succisa pratensis
Open this publication in new window or tab >>Local and regional dynamics of Succisa pratensis
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Land use change is considered to be one of the biggest threat to global species diversity. In Sweden, abandonment of grazing is one of the most common reasons for decline in species richness in semi-natural grasslands. Today semi-natural grasslands often occur as more or less isolated fragments. The result for species that benefits from grazing is a smaller area of suitable habitat and higher extinction risks and a lowered ability to colonize new areas. Succisa pratensis is a long-lived perennial plant that benefits from grazing and is common in Swedish semi-natural grasslands. I have assessed the performance of Succisa pratensis at various spatial and temporal scales, in a Swedish rural landscape. I performed demographic matrix modelling of populations at grazed and ungrazed sites. A regional level was then added, by incorporating data collected from a large number of populations and habitat types into the matrix models and extinction risks over 50 years were calculated. A dynamic metapopulation model was created and the regional dynamics, in terms of colonisations resulting from long distance dispersal and population extinctions were examined. The effects of management history were incorporated into the model by using historical maps. In addition, I made an analysis of the impact of management history on the distribution and performance of four grassland species, using vegetation maps from 1945 and 2001. Local dynamics of Succisa pratensis was negatively affected by abandonment of grazing. Recorded population sizes were ten times higher in grazed sites than in ungrazed. The turnover rate of the system was estimated to about one extinction or colonisation per year. Both the simulation study and the analyses of vegetation maps suggested a pronounced legacy of management history in Succisa pratensis in the study landscape. Overall, the results of this thesis demonstrate the importance of management history for species in the rural landscape.

Place, publisher, year, edition, pages
Stockholm: Botaniska institutionen, 2005. 38 p.
Keyword
plant ecology
National Category
Biological Sciences
Identifiers
urn:nbn:se:su:diva-762 (URN)91-7155-159-X (ISBN)
Public defence
2005-12-21, föreläsningssalen, Botanicum, Lilla Frescativägen 5, Stockholm, 13:00
Opponent
Supervisors
Available from: 2005-11-28 Created: 2005-11-28Bibliographically approved

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