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Environmental Sciences: A Students Companion

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The Holocene
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The timing and causes of the final pre-settlement expansion of Betula pubescens in Iceland

Egill Erlendsson

Department of Geography and Tourism, Faculty of Life and Environmental Sciences, University of Iceland, Sturlugata 1, 101 Reykjavík, Iceland and Snorrastofa Research Centre, 320 Reykholt, Iceland, egille{at}hi.is

Kevin J. Edwards

Departments of Geography & Environment and Archaeology, University of Aberdeen, Elphinstone Road, Aberdeen AB24 3UF, UK

Palynological data from southern and western Iceland show rising values for the pollen of Betula pubescens for the period AD 600—800. The increased values for B. pubescens probably stem from both improved flowering conditions and increased coverage and density of woodlands associated with short-lived climatic amelioration within a phase of longer-term harsh climate. The swift response to climate change in the palynological record and good correlation with comparative data from other proxies indicates that Icelandic palynology offers an important, yet largely underexploited, tool for the reconstruction of Icelandic Holocene environments.

Key Words: Iceland • palynology • vegetation change • Betula pubescens • climate • dark age period • pollen accumulation rates.

The Holocene, Vol. 19, No. 7, 1083-1091 (2009)
DOI: 10.1177/0959683609341001
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