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dc.contributor.authorBorrell, James, S.
dc.identifier.citationBorrell, J.S. 2017. Ecological Genomics for the Conservation of Dwarf Birch. Queen Mary University of Londonen_US
dc.description.abstractThe persistence of woody plant populations faces numerous environmental challenges, including climate change, hybridisation and population fragmentation. Here I explore the genomic signatures and relative importance of these pressures in Dwarf Birch (Betula nana), which has declined significantly over the last century across the Scottish Highlands. Firstly, I find that future climate is likely to result in a significant range reduction and that relict populations are likely to display reduced fitness. Secondly, I show that combining multiple mutation rate markers yields more accurate estimates of demographic history and the impact of fragmentation. I develop a novel method to derive high mutation rate markers from short sequencing reads, to facilitate more widespread application. Thirdly, I assess the degree of local adaptation, and explore potential for composite provenancing for the restoration of B. nana populations. Surprisingly, the data yields little evidence of adaptive introgression from the related tree B. pubescens, suggesting that this may not be an alternative route to climate tolerance. Finally, I review published literature on the population structure and genetic diversity of genus Betula in Europe and consider options for the conservation and management of B. nana, including assisted gene flow and prioritization of in situ genetic diversity.en_US
dc.description.sponsorshipNERC CASE studentship NE/J017388/1en_US
dc.publisherQueen Mary University of Londonen_US
dc.rightsThe copyright of this thesis rests with the author and no quotation from it or information derived from it may be published without the prior written consent of the author
dc.subjectBiological and Chemical Sciencesen_US
dc.subjectEcological Genomicsen_US
dc.subjectDwarf Birchen_US
dc.titleEcological Genomics for the Conservation of Dwarf Birchen_US

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    Theses Awarded by Queen Mary University of London

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