Journal
PLANT ECOLOGY & DIVERSITY
Volume 13, Issue 1, Pages 1-13Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17550874.2019.1709103
Keywords
Ancestral reconstruction; Cerrado; phylogenetic structure; phylogenetic turnover; rocky savanna
Categories
Funding
- CNPq [563727/2010-1, 457406/2012-7, 476599/2012-1]
- FAPEG [563624/2010-8]
- PROCAD/CAPES [88881.068425/2014-01]
Ask authors/readers for more resources
Background: Cerrado comprises heterogeneous vegetation types. The flora of the vegetation types has distinct biogeographic origins and thus can be hypothesised to have distinct evolutionary imprints. Aims: We hypothesised that the flora of riparian forest was phylogenetically overdispersed, whereas those of more open habitats were phylogenetically clustered. Methods: We built a species-level phylogeny for 1,663 species of trees, shrubs and palms and analysed the pattern of lineage distribution, alpha and beta phylogenetic diversity among Cerrado vegetation types (riparian forest, rocky savana, savana and seasonally dry forest - SDTF). Results: We found a gradient of high phylogenetic diversity and overdispersion from riparian forests towards phylogenetic clustering in vegetation in more open and drier habitats. Habitat shifts were common along the evolutionary history of all families analysed and most families showed a high frequency of shifts from SDTF to riparian forest and savanna. Conclusions: SDTF seems to be a transitional habitat in evolutionary terms, promoting lineage exchanges between stands of riparian forest and savanna. While riparian forest can be seen as a 'museum', that harbours ancient lineages, savanna and rocky savanna are a 'cradle' of derived lineages. Habitat shifts are an important underlying drive of high present-day Cerrado flora diversity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available