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Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/3304

Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Reduced tree health and seedling production in fragmented Fagus sylvatica forest patches in the Montseny Mountains (NE Spain)
Author(s): Barbeta, Adria
Penuelas, Josep
Ogaya, Roma
Jump, Alistair
Contact Email: a.s.jump@stir.ac.uk
Keywords: Forest fragmentation
demography
Issue Date: Jun-2011
Publisher: Elsevier
Citation: Barbeta A, Penuelas J, Ogaya R & Jump A (2011) Reduced tree health and seedling production in fragmented Fagus sylvatica forest patches in the Montseny Mountains (NE Spain), Forest Ecology and Management, 261 (11), pp. 2029-2037.
Abstract: Habitat fragmentation results in smaller and more isolated populations that may be at higher risk of extirpation or further decline in comparison with their more continuously distributed progenitors. Risks to fragmented populations have frequently been considered from the perspective of population genet- ics, however, disruption of normal plant demography may be an equal or greater threat to population persistence. We compared demographic performance and tree health in continuous and fragmented forest plots with similar tree size structure and local climatic and physiographic conditions in order to determine if fragments are characterized by poor health and reproduction. We found that beech forest fragments showed lower seedling density, more tree crown damage and also higher percentage of dead trees. However, mortality of juveniles in the youngest age class was substantially lower in fragments such that long-term population structure remained similar between the two forest types. If reduced mortality compensates for reduced seedling establishment, as our data suggest, then fragmented pop- ulations should show greater long-term persistence than would be predicted based on comparison of young age cohorts alone. However, despite such demographic compensation, the decreased health of adult trees may pose an increasing future threat to the fragmented populations. Our results demonstrate the importance of integrating demographic patterns over long time periods and not relying on single year or cohort comparisons and may partly explain population genetic differences previously reported for the same populations.
Type: Journal Article
URI: http://hdl.handle.net/1893/3304
DOI Link: http://dx.doi.org/10.1016/j.foreco.2011.02.029
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Universitat Autonoma de Barcelona
Universitat Autonoma de Barcelona
Universitat Autonoma de Barcelona
Biological and Environmental Sciences

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