Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Basal phylogenetic asymmetry in species-rich natural taxa of plants: a multivariate study
In: Plant Biosystems. Italian Botanical Society Onlus/Taylor & Francis: Firenze. ISSN 1126-3504; e-ISSN 1724-5575
|  |
| Trefwoord |
|
| Author keywords |
Basal clade, cladograms, divergence time, diversification, phylogenetic systematics, species richness |
| Abstract |
Sister groups at the root of large plant clades (with ≥1000 extant species) are described in terms of variables expressing species richness, geographical distribution, age, diversification rate and speed of molecular evolution. Standard statistical tools and principal component analysis are used to determine and visualize their relationships. In the majority of the 167 groups examined, one clade (the minor) has many fewer species than its sister (the major clade). A striking phenomenon is that many minor clades (17%) contain four or fewer species only. Asymmetry is largely, but not generally reflected by proportions in geographical range and relative speed of molecular evolution: species in the minor clade are more widely distributed than the major clade in 8 groups and – based on available information – we detected longer maximum branch lengths on the minor lineage in 14 cases. The basal lineages considerably differ in diversification rate; the differences are of the same magnitude in many groups as the diversification rate itself calculated for families and orders by other authors. For the major clade, we found a positive relationship between the species richness of clades and geographical range, and negative correlation between the logarithm of species richness and clade age. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
