Details

Autor(en) / Beteiligte

• Scherson, Rosa A.
• Thornhill, Andrew H.
• Urbina-Casanova, Rafael
• Freyman, William A.
• Pliscoff, Patricio A.
• Mishler, Brent D.

Titel

Spatial phylogenetics of the vascular flora of Chile

Ist Teil von

• Molecular phylogenetics and evolution, 2017-07, Vol.112, p.88-95

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2017

Quelle

MEDLINE

Beschreibungen/Notizen

• [Display omitted] •Adds evolutionary information to standard assays of biodiversity that use species.•Interesting centers with significant paleo-endemism were found in the south of Chile.•The north of Chile showed high phylogenetic endemism, including much neo-endemism.•Range-weighted phylogenetic turnover proved useful in detecting biotic transitions.•The results provide important aids for conservation assessment. Current geographic patterns of biodiversity are a consequence of the evolutionary history of the lineages that comprise them. This study was aimed at exploring how evolutionary features of the vascular flora of Chile are distributed across the landscape. Using a phylogeny at the genus level for 87% of the Chilean vascular flora, and a geographic database of sample localities, we calculated phylogenetic diversity (PD), phylogenetic endemism (PE), relative PD (RPD), and relative PE (RPE). Categorical Analyses of Neo- and Paleo-Endemism (CANAPE) were also performed, using a spatial randomization to assess statistical significance. A cluster analysis using range-weighted phylogenetic turnover was used to compare among grid cells, and with known Chilean bioclimates. PD patterns were concordant with known centers of high taxon richness and the Chilean biodiversity hotspot. In addition, several other interesting areas of concentration of evolutionary history were revealed as potential conservation targets. The south of the country shows areas of significantly high RPD and a concentration of paleo-endemism, and the north shows areas of significantly low PD and RPD, and a concentration of neo-endemism. Range-weighted phylogenetic turnover shows high congruence with the main macrobioclimates of Chile. Even though the study was done at the genus level, the outcome provides an accurate outline of phylogenetic patterns that can be filled in as more fine-scaled information becomes available.