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(Article of periodic en Anglais - 1977)

Document title

The geobotanical development of spring-fed mires in Finnish Lapland

Authors(s) and Affiliation(s)

LAHERMO F. ; VALOVIRTA V. E. ; SARKIOJA A. ;

Abstract

Surficial groundwater conditions, especially spring-fed mires in Central Finnish Lapland, are geobotanically interpreted with the aid of black-and-white and infra-red colour aerial photographs, together with field analyses of the vegetation at nine selected case study sites. In addition, the effect of the composition of ground water on mire vegetation, and the structure and development of spring-fed mires during the Holocene are evaluated. The seeping springs situated on sloping mires characteristically form "crater"-like hummocks rising 0,5 to 1,5 metres above the mire environment. They are composed mainly of Bryales or Carex-Bryales peat and in the light of pollen and C analysis they began to form at the end of the Pre-Boreal and beginning of the Boreal c. 8800years ago. (E. Jahn).

Source

Article of periodic

published at : Geological Survey of Finland Bulletin

Editor :

Millesime : 1977, no287 [pp. 1-44]

Language

Anglais

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