Abstract Maples ( Acer sp.) are trees/shrubs of extraordinary aesthetic value, what favours them for wide utilisation in urban greenery. However, some the non-native species became invasive new range and represent a threat to natural ecosystems. Therefore, after definition their frequency planting history Slovak cities reinvestigation ecological status, based on analysis growth, reproduction bi...

Alteration of the fire regime in upland oak–hickory (Quercus L. spp.–Carya Nutt. spp.) forests Central Hardwood Region is a major factor for current shifts species’ composition and oak recruitment regeneration failures. The reintroduction into these ecosystems requires better understanding effects on co-occurring competitors. First-order (i.e., during immediately after) red maple (Acer rubrum L...

A central question in random matrix theory is universality. When an emergent phenomena observed from a large collection of chosen variables it natural to ask if this behavior specific the variable or occurs for larger class variables. The rank statistics matrices uniformly $\operatorname{Mat}(\mathbf{F}_q)$ over finite field are well understood. The universality properties these not yet fully...

Simulations suggest that molecular clock analyses can correctly identify the root of a tree even when the clock assumption is severely violated. Clock-based rooting of phylogenies may be particularly useful when outgroup rooting is problematic. Here, we explore relaxed-clock rooting in the Acer/Dipteronia clade of Sapindaceae, which comprises genera of highly uneven species richness and problem...