Introduction

  • P. Kallio
  • F. E. Wielgolaski
Part of the Ecological Studies book series (ECOLSTUD, volume 16)

Abstract

The amount of mineral nutrients originating from bedrock varies in different parts of Fennoscandia, due to the variation in bedrock quality, as described in the site description in the present volume. The Swedish, and particularly the Norwegian IBP sites, have more variable habitats of minerogenic nutrient origin than do the Finnish. There are, however, also habitats with ombrogenic nutrient origin, i.e. dependent on nutrients from precipitation. In this respect, there are further differences in the IBP sites in Fennoscandia as seen in the paper by Kallio and Veum (this section). The highest values for most nutrients in precipitation have been measured at the Norwegian sites at Hardangervidda, while the northern sites in Fennoscandia at Abisko and at Kevo show minimum input. This depends partly on the distance of the sites from an ocean, which is one source of nutrients, and also from the big industrial centers of Middle Europe. The latter concerns particularly sulphur, which is both a necessary nutrient and, in higher concentrations, a pollutant.

Keywords

Biomass Europe Leaching Rhizobium 

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References

  1. Gaare, E., Skogland, T.: Wild reindeer food habitats and range use at Hardangervidda, Norway. In: Wielgolaski, F.E. (Ed.): Fennoscandian tundra ecosystems, Part 2: Animals and systems analysis. Berlin-Heidelberg-New York: Springer 1975. (In press.)Google Scholar
  2. Haukioja, E.,Koponen, S.: Birch herbivores and herbivory at Kevo, northern Finland. In: Wielgolaski F. E. (Ed.): Fennoscandian tundra ecosystems, Part 2: Animals and systems analysis. Berlin-Heidelberg-New York: Springer 1975. (in press.)Google Scholar
  3. Kallio, P.,Lehtonen,J.: Ecocatastrophes of birch forests caused by Oporinia autumnata (Bkh.) and the problem of reafforestation. In: Wielgolaski, F.E. (Ed.): Fennoscandian tundra ecosystems, Part 2: Animals and systems analysis. Berlin-Heidelberg-New York: Springer 1975. (In press.)Google Scholar

Copyright information

© Springer-Verlag Berlin · Heidelberg 1975

Authors and Affiliations

  • P. Kallio
  • F. E. Wielgolaski

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