Scaling properties of intraspecific and interspecific phylogenies in the Tree of Life

One of the greatest problems that we find nowadays in ecology and evolutionary biology is the explanation of the biological diversity on Earth. A comprehensive analysis of the shape of the Tree of Life provides a snapshot about the diversification patterns and the different (macro- and micro-) evolutionary events that take place during the evolution of organisms. As a first approach to the characterization of statistical features of the Tree of Life, we have performed a preliminary study of how branching properties change with network size to the study of the topological properties of the phylogenetic trees. With the aim to carry out both intra- and inter- specific evolutionary studies, we have compiled different phylogenetic trees of organisms of each five kingdoms (Monera, Protista, Fungi, Plantae and Animalia) from several biogeographical analyses. The branching properties analyses reveal a universal scaling relationship between shape and size of the phylogenetic trees.