Buffered tree population changes in a quaternary refugium: Evolutionary implications

PC Tzedakis*, IT Lawson, MR Frogley, GM Hewitt, RC Preece

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

476 Citations (Scopus)

Abstract

A high-resolution pollen record from western Greece shows that the amplitude of millennial-scale oscillations in tree abundance during the last glacial period was subdued, with temperate tree populations surviving throughout the interval. This provides evidence for the existence of an area of relative ecological stability, reflecting the influence of continued moisture availability and varied topography. Long-term buffering of populations from climatic extremes, together with genetic isolation at such refugial sites, may have allowed lineage divergence to proceed through the Quaternary. Such ecologically stable areas may be critical not only for the long-term survival of species, but also for the emergence of new ones.

Original languageEnglish
Pages (from-to)2044-2047
Number of pages5
JournalScience
Volume297
Issue number5589
Publication statusPublished - 20 Sept 2002

Keywords

  • NORTHWEST GREECE
  • ICE AGES
  • VARIABILITY
  • SPECIATION
  • CALIBRATION
  • SCALE

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