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Abstract
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| Open wood formations (known as “dehesas” in Spain and “montados” in Portugal) of cork oak (Quercus suber L.) and holm oak (Q. ilex L.) are under an increasing menace in extended regions of the Iberian Peninsula due to the lack of regeneration. Maintenance of the genetic diversity in the new generations is a key point in forest management, in order to avoid negative inbreeding effects that could eventually hinder regeneration. The present analysis of genetic structure within a mixed population, using nuclear microsatellites (nSSR) as molecular markers, is a first step in the description of the reproductive patterns of these species, with important implications for the management and conservation of such woods. We have not detected a significant inbreeding for any of the species, taking into account different age classes. Our results point out a very efficient gamete dispersal, mainly for holm oak. According to this, in woods where flowering and fructification are not limiting, normal actuations directed to help the settlement of the offspring (such as grazing limitation) may be enough for the appropriate management, being guaranteed by natural regeneration the maintenance of genetic diversity in the offspring. Some differences among both species, with very similar ecological roles, are reported, being noteworthy the significant genetic structure detected for cork oak adults. | |
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International
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Book Edition
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0 |
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Book Publishing
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Universidad de Huelva |
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ISBN
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978-84-96826-47-2 |
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Series
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Book title
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SUBERWOOD: New challenges for the integration of cork oak forests and products |
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From page
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23 |
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To page
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29 |