Volcanic Ash Deposition and Long-Term Vegetation Change on Subantarctic Marion Island

Dan Yeloff, Dmitri Mauquoy, Keith E. Barber, Susannah Way, Bas van Geel, Chris S. M. Turney

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16 Citations (Scopus)

Abstract

A c. 5500 year record of peatland development and vegetation change was generated from a core recovered from an Agrostis magellanica peat bog on subantarctic Marion Island, using palynomorph, plant macrofossil, and tephra analyses. Two tephra horizons (both 17 cm thick) were identified and dated to ca. 2900 cal. BP and ca. 1700 cal. BP. Succession of the vegetation as a consequence of tephra deposition, particularly by the pioneer Azorella selago, appears to have been very slow, lasting as long as c. 700 yr. The slow pace of vegetation succession highlights the sensitivity of the indigenous Marion Island flora to environmental change, and the vulnerability to the spread of alien invasive species.

Original languageEnglish
Pages (from-to)500-511
Number of pages12
JournalArctic Antarctic and Alpine Research
Volume39
Issue number3
DOIs
Publication statusPublished - Aug 2007

Keywords

  • climate-change
  • terrestrial habitats
  • Southern-Ocean
  • Netherlands
  • environment
  • Scotland
  • eruption
  • history
  • pollen
  • BP

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