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  • 1.
    Eriksson, Viktor
    Linköping University, Department of Physics, Chemistry and Biology.
    Lämpliga stampopulationer av mellanspett (Dendrocopos medius) för återintroduktion i Linköping, Östergötland2019Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    The middle spotted woodpecker (Dendrocopos medius) became extinct in Sweden in 1982. The last population inhabited a fragmented area of 300 km2 and were for a long time a characteristic species for the oak stands of Sturefors and Bjärka­Säby, south of Linköping. The reason why the species got extinct depends mostly on habitat fragmentation. Also, the extinction got hasten by harsh wintering conditions. The purpose of this study is to evaluate which of current populations of Dendrocopos medius could best serve as source of founders for a possible reintroduction of the species in Linköping. Populations from Poland, Germany, Latvia and Lithuania were considered, taking their ecology, phylogeny and genetic diversity into account. The population’s abiotic conditions, in combination with their ability to adapt to different habitat was also considered crucial to conduce a successful reintroduction of middle spotted woodpecker in Linköping. Populations from Bialowieza and Krotoszyn in Poland, Wolfsburg in Germany and Kaunas and Marijampole in Lithuania were considered most suitable to contribute with founders. Since the middle spotted woodpecker could work as a flagship species for old and open oak stands, a reintroduction of the species could turn up the awareness for nature conservation, species conservation and biodiversity. 

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