The role of climate, forest fires and human population size in Holocene vegetation dynamics in Fennoscandia

摘要: Questions: We investigated the changing role of climate, forest fires and human population size in broad-scale compositional changes Holocene vegetation dynamics before after onset farming Sweden (at 6,000 cal yr BP) Finland 4,000 BP). Location: Southern central Sweden, SW SE Finland. Methods: regional plant abundances were reconstructed using REVEALS model on selected fossil pollen records from lakes. The relative importance composition was assessed variation partitioning. Past climate variable derived LOVECLIM model. Fire sedimentary charcoal records. Estimated trend based temporal distribution archaeological radiocarbon dates. Results: Climate explains highest proportion during whole study period (10,000-4,000 (10,000-1,000 BP), pre-agricultural period. In general, explain a relatively low variation. Human has significant effect S Conclusions: Mesolithic hunter-gatherer populations did not significantly affect Fennoscandia, main driver at that time. Agricultural communities, however, had greater dynamics, became more important factor late Holocene. Our results demonstrate can be considered long-term Fennoscandia. However, some regions influence exceeded longevity dating to early Neolithic. (Less)