Document Detail

Plasticity in response to phosphorus and light availability in four forest herbs.
MedLine Citation:
PMID:  20300776     Owner:  NLM     Status:  MEDLINE    
The differential ability of forest herbs to colonize secondary forests on former agricultural land is generally attributed to different rates of dispersal. After propagule arrival, however, establishing individuals still have to cope with abiotic soil legacies from former agricultural land use. We focused on the plastic responses of forest herbs to increased phosphorus availability, as phosphorus is commonly found to be persistently bioavailable in post-agricultural forest soils. In a pot experiment performed under field conditions, we applied three P levels to four forest herbs with contrasting colonization capacities: Anemone nemorosa, Primula elatior, Circaea lutetiana and Geum urbanum. To test interactions with light availability, half of the replicas were covered with shade cloths. After two growing seasons, we measured aboveground P uptake as well as vegetative and regenerative performance. We hypothesized that fast-colonizing species respond the most opportunistically to increased P availability, and that a low light availability can mask the effects of P on performance. All species showed a significant increase in P uptake in the aboveground biomass. The addition of P had a positive effect on the vegetative performances of two of the species, although this was unrelated to their colonization capacities. The regenerative performance was affected by light availability (not by P addition) and was related to the species' phenology. Forest herbs can obviously benefit from the increased availability of P in post-agricultural forests, but not all species respond in the same way. Such differential patterns of plasticity may be important in community dynamics, as they affect the interactions among species.
Lander Baeten; Margot Vanhellemont; Pieter De Frenne; An De Schrijver; Martin Hermy; Kris Verheyen
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-03-19
Journal Detail:
Title:  Oecologia     Volume:  163     ISSN:  1432-1939     ISO Abbreviation:  Oecologia     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-14     Completed Date:  2010-10-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0150372     Medline TA:  Oecologia     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1021-32     Citation Subset:  IM    
Laboratory of Forestry, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267, 9090 Gontrode, Melle, Belgium.
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MeSH Terms
Anemone / growth & development,  metabolism
Angiosperms / growth & development,  metabolism*
Geum / growth & development,  metabolism
Onagraceae / growth & development,  metabolism
Phosphorus / metabolism*
Primula / growth & development,  metabolism
Reg. No./Substance:

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