MACROFOSSIL EVIDENCE DISPUTE UBIQUITOUS BIRCH-PINE- SPRUCE SUCCESSION IN WESTERN FINNISH LAPLAND

rain. Geological Survey of Finland, Special Paper 46, 93–98, 5 fi gures. Reconstruction of the post-glacial migration of Norway spruce (Picea abies (L.) Karst.) into northern Fennoscandia is based on pollen records and radiocarbon (14C) ages from organic deposits. However, no macrofossil evidence in...

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Bibliographic Details
Main Authors: Raimo Sutinen, Ilkka Aro, Hannu Herva, Tapio Muurinen, Matti Piekkari, Mauri Timonen
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Key words (GeoRef Thesaurus
AGI
paleobotany
Betula
Pinus
Picea
wood
mires
lakes
absolute age
14C
Holocene
Lapland Province
Finland
Norway
Pousujärvi
Fennoscandia
Lapland
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.600.2002
http://arkisto.gtk.fi/sp/sp46/sp46_pages_93_98.pdf
Description
Summary:rain. Geological Survey of Finland, Special Paper 46, 93–98, 5 fi gures. Reconstruction of the post-glacial migration of Norway spruce (Picea abies (L.) Karst.) into northern Fennoscandia is based on pollen records and radiocarbon (14C) ages from organic deposits. However, no macrofossil evidence indicates the distribution of spruce beyond its present timberline-treeline ecotone. We ap-plied total sampling to study Holocene succession of tree species at two sites: Pousujärvi peat bog (68°51’N, 21°10’E), beyond the present tree limits of spruce and Scots pine (Pinus sylvestris L.) and at Lake Kompsiotievanlammit (68°30’N, 22°30’E) at the present pine treeline in western Finnish Lapland. Subfossil pine logs at the Pousujärvi site yielded 14C-ages from 5,000±40 to 5,110±60 yr BP (5,730 to 5,900 cal. BP). The pioneer species were found to be birch (Betula pubescens ssp.) yielding 14C-age

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