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Strong microsite control of seedling recruitment in tundra

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dc.contributor.author Graae, Bente J.
dc.contributor.author Ejrnæs, Rasmus
dc.contributor.author Lang, Simone I.
dc.contributor.author Meineri, Eric
dc.contributor.author Ibarra, Pablo T.
dc.contributor.author Bruun, Hans Henrik
dc.date.accessioned 2011-03-11T10:54:56Z
dc.date.available 2011-03-11T10:54:56Z
dc.date.issued 2010-12-19
dc.identifier.citation Oecologia 1-12 en_US
dc.identifier.uri http://dx.doi.org/10.1007/s00442-010-1878-8
dc.identifier.uri http://hdl.handle.net/1956/4576
dc.description.abstract The inclusion of environmental variation in studies of recruitment is a prerequisite for realistic predictions of the responses of vegetation to a changing environment. We investigated how seedling recruitment is affected by seed availability and microsite quality along a steep environmental gradient in dry tundra. A survey of natural seed rain and seedling density in vegetation was combined with observations of the establishment of 14 species after sowing into intact or disturbed vegetation. Although seed rain density was closely correlated with natural seedling establishment, the experimental seed addition showed that the microsite environment was even more important. For all species, seedling emergence peaked at the productive end of the gradient, irrespective of the adult niches realized. Disturbance promoted recruitment at all positions along the environmental gradient, not just at high productivity. Early seedling emergence constituted the main temporal bottleneck in recruitment for all species. Surprisingly, winter mortality was highest at what appeared to be the most benign end of the gradient. The results highlight that seedling recruitment patterns are largely determined by the earliest stages in seedling emergence, which again are closely linked to microsite quality. A fuller understanding of microsite effects on recruitment with implications for plant community assembly and vegetation change is provided. en_US
dc.language.iso eng en_US
dc.publisher Springer en
dc.rights Copyright The Author(s) 2010. This article is published with open access at Springerlink.com en_US
dc.rights.uri http://creativecommons.org/licenses/by-nc/2.5/ en_US
dc.subject Arctic en
dc.subject Alpine en
dc.subject Invasibility en
dc.subject Microclimate en
dc.subject Seed limitation en
dc.title Strong microsite control of seedling recruitment in tundra en_US
dc.type Peer reviewed en_US
dc.type Journal article en_US
dc.subject.nsi VDP::Mathematics and natural science: 400 en_US
dc.rightsHolder The Author(s) 2010 en_US
dc.type.version publishedVersion en_US


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Copyright The Author(s) 2010. This article is published with open access at Springerlink.com Except where otherwise noted, this item's license is described as Copyright The Author(s) 2010. This article is published with open access at Springerlink.com

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