| Texto completo | |
| Autor(es): |
Marquitti, Flavia Maria Darcie
[1]
;
Fernandes, Lucas D.
[2]
;
de Aguiar, Marcus Aloizio Martinez
[1]
Número total de Autores: 3
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Campinas, SP - Brazil
[2] Imperial Coll London, Dept Life Sci, Ascot, Berks - England
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ECOGRAPHY; v. 43, n. 10 JUL 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
The shape of a phylogenetic tree is defined by the sequence of speciation events, represented by its branching points, and extinctions, represented by branch interruptions. In a neutral scenario of parapatry and isolation by distance, species tend to branch off the original population one after the other, leading to highly unbalanced trees. In this case the degree of imbalance, measured by the normalized Sackin index, grows linearly with species richness. Here we claim that moderate values of imbalance for trees with large number of species can occur if the geographic distribution involves more than one deme (allopatry) and speciation is parapatric within demes. The combined values of balance (normalized Sackin index) and species richness provide an estimate of how many demes were involved in the process if it happened in such neutral scenario. We also show that the spatial division in demes moderately slows down the diversification process, portraying a neutral mechanism for structuring the branch length distribution of phylogenetic trees. (AU) | |
| Processo FAPESP: | 16/01343-7 - ICTP Instituto Sul-Americano para Física Fundamental: um centro regional para física teórica |
| Beneficiário: | Nathan Jacob Berkovits |
| Linha de fomento: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 19/20271-5 - Modelos evolutivos em dinâmica de populações |
| Beneficiário: | Marcus Aloizio Martinez de Aguiar |
| Linha de fomento: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 15/11985-3 - Evolução da cooperação entre diferentes espécies |
| Beneficiário: | Flávia Maria Darcie Marquitti |
| Linha de fomento: | Bolsas no Brasil - Pós-Doutorado |