1. Local characteristics of the standing genetic diversity of European beech with high within-region differentiation at the eastern part of the range
- Author
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Hohn, M., Major, E., Avdagic, A., Bielak, K., Bosela, M., Coll, L., Dinca, L., Giammarchi, F., Ibrahimspahic, A., Mataruga, M., Pach, M., Uhl, E., Zlatanov, T., Cseke, K., Kovacs, Zs., Palla, B., Ladanyi, M., and Heinze, B.
- Subjects
Beech -- Genetic aspects -- Distribution ,Forests and forestry -- Natural history -- Europe ,Company distribution practices ,Earth sciences - Abstract
Developing 'climate smart forestry' (CSF) indicators in mountain forest regions requires collection and evaluation of local data and their attributes. Genetic resources are listed among the core indicators for forest biological diversity. This study is a report on the evaluation of the standing genetic diversity within and across 12 pure beech stands (Fagus sylvatica L.) established within the CLIMO (CLImate Smart Forestry in Mountain Regions) project, using nuclear microsatellite markers. The sampling sites were set along the species' distribution range, including the Balkan region and extending towards the Iberian Peninsula. Cores or leaves from 20 to 23 old, mature trees per plot were sampled for DNA analysis. Genetic diversity indices were high across the range ([H.sub.E] = 0.74-0.81) with the highest in the Bosnian Mountains. Genetic divergence increased significantly with the geographical distance (Mantel test: r = 0.81, p < 0.001). Most of the stands exhibited an excess of heterozygotes, with the highest value at the Hungarian site ([H.sub.O]/[H.sub.E] = 1.177), where beech persists close to the eastern xeric limit of the species' distribution. STRUCTURE revealed within-region differentiation in the Balkan Peninsula, where the Bulgarian stand was the most outstanding. The genetic parameters of each stand could be assessed as a resource for CSF indicators interpreted especially at the local level. Key words: Fagus sylvatica, heterozygosity, F statistics, geographical groups, environmental variables. Le developpement d'indicateurs de foresterie intelligente face au climat (FIFC) dans les regions forestieres montagneuses exige la collecte et revaluation de donnees locales et de leurs attributs. Les ressources genetiques sont considerees comme des indicateurs de base pour la diversite biologique de la foret. Cette etude est un rapport sur revaluation de la diversite genetique actuelle dans et parmi 12 peuplements purs de hetre commun (Fagus sylvatica L.) etablis dans le cadre du projet CLIMO (CLIMO (<>) a l'aide de marqueurs microsatellites nucleaires. Les sites d'echantillonnage ont ete etablis le long de l'aire de repartition de l'espece, incluant la region des Balkans et se prolongeant vers la peninsule iberique. Des carottes ou des feuilles prelevees sur 20 a 23 vieux arbres matures par place echantillon ont ete echantillonnees pour l'analyse de l'ADN. Les indices de diversite genetique etaient eleves ([H.sub.E] = 0,74-0,81) a travers l'aire de repartition; les plus eleves ont ete observes dans les montagnes de Bosnie. La divergence genetique augmentait significativement avec la distance geographique (test de Mantel : r = 0,81, p < 0,001). La plupart des peuplements avaient un exces d'heterozygotes : le site hongrois, ou le hetre persiste pres de la limite xerique orientale de l'aire de repartition de 1'espece, avait la valeur la plus elevee ([H.sub.O]/[H.sub.E] = 1,177). STRUCTURE a revele une differenciation au sein de la region dans la peninsule des Balkans, ou un peuplement bulgare etait le plus remarquable. Les parametres genetiques de chaque peuplement pouvaient etre evalues en tant ressource pour les indicateurs de FIFC interpretes particulierement a l'echelle locale. [Traduit par la Redaction] Mots-cles: Fagus sylvatica, heterozygotie, statistique F, groupes geographiques, variables environnementales., 1. Introduction Forests play an important role in the mitigation of the effects of climate change. Therefore, climate smart forestry (CSF) may significantly invigorate the positive effects of forests and [...]
- Published
- 2021
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