Metric-dependent genomic diversity reveals phylogenetic and ecological structure in saproxylic beetles

Authors

Krovi, R. S., Amer, N. R., Wierzbicka, A., Plewa, R., Kadej, M., Jaworski, T., Smolis, A., Szmatola, T., Oczkowicz, M., Kajtoch, L.

Abstract

Abstract 1. Comparative studies can reach different conclusions when genomic-diversity metrics use different denominators. 2. We analysed standardized ddRAD-seq data from 759 individuals, 149 species-by-site population records and 26 saproxylic beetle species across eight Polish forest complexes. 3. Species identity and sampling hierarchy explained most population-level variation. Deciduous-associated species had higher variant-site expected heterozygosity than conifer-associated species. 4. All-position nucleotide diversity showed stable phylogenetic signal, whereas occurrence tier and exploratory forest-management and protection contrasts showed no consistent associations. 5. Genomic-diversity metrics are not interchangeable; comparative assessments should report their denominator and test lineage sensitivity.

Preprint server: bioRxiv
The authors list and abstract were imported from bioRxiv on 05 Sep 2026.

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