Ecological and Biogeographical Imprints in a Beech Glacial Refugium

Author:

Tsiripidis Ioannis1ORCID,Stamellou Stavroula2,Papageorgiou Aristotelis C.3ORCID,Drouzas Andreas D.1ORCID

Affiliation:

1. Laboratory of Systematic Botany and Phytogeography, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece

2. Postgraduate Studies Programme “Conservation of Biodiversity and Sustainable Exploitation of Native Plants”, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece

3. Department of Molecular Biology and Genetics, Democritus University of Thrace, Dragana Campus, GR-68100 Alexandroupolis, Greece

Abstract

The distribution of vascular plant species and assemblages existing in beech (Fagus sylvatica L.) forests was compared with the distribution of beech chloroplast DNA (cpDNA) haplotypes, aiming to identify possible interpretable trends of co-occurrence, on a small geographical scale, and to infer the relevant historical factors. Vegetation and genetic (cpSSR) data were collected from 60 plots on Mt. Menikio (northeastern Greece). Classification and ordination analyses were applied on the vegetation data, while on the cpSSR data, diversity measures and genetic structure analyses were employed. A probabilistic co-occurrence analysis was performed on haplotypes and taxa. The results show that a plant biogeographical border exists on Mt. Menikio which, in addition, has acted both as a refugium and as a meeting point of lineages for more than one glacial cycle. Significant associations of co-occurrence between haplotypes and vascular taxa were found but no common distribution patterns between the former and species assemblages were identified. The combined consideration of the distribution profiles of species assemblages, plant species and cpDNA haplotypes (corresponding to the three levels of biodiversity) provides concrete information on historical events, leading to a comprehensive understanding of the evolutionary and biogeographical processes that have shaped specific spatial patterns of biodiversity.

Funder

School of Biology, Aristotle University of Thessaloniki

Publisher

MDPI AG

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