Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 406914
Title Consistent phenological shifts in the making of biodiversity hotspots: the Cape flora.
Author(s) Warren, B.; Bakker, F.T.; Bellstedt, D.U.; Bytebier, B.; Claszen-Bockhoff, R.; Dreyer, L.L.; Edwards, A.; Forest, F.; Galley, C.; Hardy, C.R.; Linder, H.P.; Muasya, A.M.; Mummenhoff, K.; Oberlander, K.C.; Quint, M.; Richardson, J.E.; Savolainen, V.; Schrire, B.D.; Niet, T. van der; Verboom, G.A.; Yesson, C.; Hawkins, J.A.
Source BMC Evolutionary Biology 11 (2011). - ISSN 1471-2148 - 11 p.
DOI http://dx.doi.org/10.1186/1471-2148-11-39
Department(s) Biosystematics
EPS-4
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) climate-change - southern africa - ecological niches - flowering time - heterogeneous environments - evolutionary responses - adaptive radiation - rapid evolution - fossil record - sequence data
Abstract Background The best documented survival responses of organisms to past climate change on short (glacial-interglacial) timescales are distributional shifts. Despite ample evidence on such timescales for local adaptations of populations at specific sites, the long-term impacts of such changes on evolutionary significant units in response to past climatic change have been little documented. Here we use phylogenies to reconstruct changes in distribution and flowering ecology of the Cape flora - South Africa's biodiversity hotspot - through a period of past (Neogene and Quaternary) changes in the seasonality of rainfall over a timescale of several million years. Results Forty-three distributional and phenological shifts consistent with past climatic change occur across the flora, and a comparable number of clades underwent adaptive changes in their flowering phenology (9 clades; half of the clades investigated) as underwent distributional shifts (12 clades; two thirds of the clades investigated). Of extant Cape angiosperm species, 14-41% have been contributed by lineages that show distributional shifts consistent with past climate change, yet a similar proportion (14-55%) arose from lineages that shifted flowering phenology. Conclusions Adaptive changes in ecology at the scale we uncover in the Cape and consistent with past climatic change have not been documented for other floras. Shifts in climate tolerance appear to have been more important in this flora than is currently appreciated, and lineages that underwent such shifts went on to contribute a high proportion of the flora's extant species diversity. That shifts in phenology, on an evolutionary timescale and on such a scale, have not yet been detected for other floras is likely a result of the method used; shifts in flowering phenology cannot be detected in the fossil record.
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