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Variation in abundance (as % of total pollen sum) and accumulation rates (pieces cm−2 year−1) of charcoal fragments >10 μm and <180 μm over time at East Bog (c.5500 years) and Psidium Bog (c.1200 years) and >10 μm and <250 μm at Pernettya Bog (c.5500 years).
