Aktuelles: New publication - Species Richness Gradients Vary Across Phylogenetic Scales

Machac, A., Hurlbert, A., Cabral, J. S., Cerezer, F. O., Dambros, C. S., Fritz, S., Graham, C. H., Hagen, O., Hartig, F., Huang, S., Pontarp, M., & Storch, D. (2025). Species Richness Gradients Vary Across Phylogenetic Scales. Global Ecology and Biogeography, 34(12), e70067. https://doi.org/10.1111/geb.70067 (externer Link, ?ffnet neues Fenster)

From the abstract: Species richness gradients are not universal, nor are they phylogenetic scale-invariant. Instead, they follow systematic trends across the phylogenetic hierarchy. Young, small clades often bear signatures of their region of origin and historical dispersal, whereas older, larger clades converge on similar gradients. Recognising the variation and the phylogenetic trends within it elucidates the formation of biodiversity patterns. We offer guidelines for choosing gradient measures, arguing that multiple metrics, combined with careful use of null models, are necessary for a nuanced understanding of how, and why, global biodiversity patterns diverge from the presumed universal gradients.