- Standardsignatur18594BU
- TitelMonitoring genetic diversity of Torminalis glaberrima for resilient forests in the face of population fragmentation
- VerfasserLila AfifiAglaia SzukalaKarin TremetsbergerHeino Konrad
- Seiten81
- MaterialArtikel aus einem Buch
- Digitales Dokument
- Datensatznummer200212692
- QuelleTage der Biodiversität 2025 – Gemeinsam aus der Biodiversitätskrise. Book of Abstracts (2025) , 81
- AbstractTorminalis glaberrima (Gand.) Sennikov & Kurtto is a European tree species currently underutilized in forestry, despite being used in foodstuffs and furniture production and contributing to ecosystem stability. Additionally, the species is projected to experience a large range expansion as climate change progresses. Current population fragmentation levels may inhibit the species’ ability to migrate and provide stability to fragile forest ecosystems. To investigate the relationship between structural and functional connectivity, we surveyed populations of T. glaberrima across Austria and investigated the genetic diversity, spatial genetic structure, and gene flow using simple sequence repeat markers. Despite the distribution of T. glaberrima being highly fragmented in the southern, western and central part of its range in Austria, we found high genetic diversity, low population differentiation and low inbreeding, and estimated higher gene dispersal values than reported in previous studies. Only two of the established ex situ plantations and seed orchards appear to well represent the fine-scale population structure present in the wild, and existing in situ gene conservation units (GCUs) are insufficient to preserve the current natural genetic diversity. Population structure analyses identified two main regions of genetic ancestry in the northwestern and southeastern part of the species’ range in Austria, that should be accounted for and better represented in future ex situ conservation efforts. Finally, we encourage the use of plantings between isolated populations, bolstering the genetic connectivity and diversity of populations, and the establishment of new in situ GCUs to maximize the conservation of extant forest genetic diversity.
- SchlagwörterÖsterreich, BFW, BOKU, Tagung, biologische Vielfalt, Biodiversität, Waldökosystem, Mehlbeere, Torminalis glaberrima, Fragmentierung, Klimawandel, Populationsstruktur
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