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Shading results in depletion of the soil seed bank
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Plant Ecology and Evolution.
2014 (English)In: Nordic Journal of Botany, ISSN 0107-055X, E-ISSN 1756-1051, Vol. 32, no 5, 674-679 p.Article in journal (Refereed) Published
Abstract [en]

To what extent is the decline of characteristic dry alvar species related to the decline in the soil seed bank during scrub encroachment? We recorded the number of flower stems in the vegetation in relation to light attenuation along an encroachment series progressing from open alvar through small gaps inside dense scrub of Juniperus communis (cover of 60%) to intact dense scrub (cover of 100%) on the island of oland, Sweden. This measurement of potential reproduction (number of flower stems) was then compared to the number of species in the soil seed bank at each site along the alvar encroachment series. Scrub encroachment results in light attenuation between and under the shrubs. The total number of flower stems averaged over all species was similar between gaps and open alvar, but that of alvar species was significantly lower in the gaps, indicating that light attenuation could reduce their seed set. Shading in gaps is related to depletion of the soil seed bank and loss of alvar species, particularly those that do not form a persistent soil seed bank.

Place, publisher, year, edition, pages
2014. Vol. 32, no 5, 674-679 p.
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Ecology
Identifiers
URN: urn:nbn:se:uu:diva-238592DOI: 10.1111/j.1756-1051.2013.00288.xISI: 000344353800024OAI: oai:DiVA.org:uu-238592DiVA: diva2:772152
Available from: 2014-12-16 Created: 2014-12-14 Last updated: 2017-12-05Bibliographically approved

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Rosén, Eje

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