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Silva Fennica 1926-1997
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Acta Forestalia Fennica
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Articles by Veikko Huhta

Category: Research article

article id 392, category Research article
Veikko Huhta, Mika Räty. (2005). Soil animal communities of planted birch stands in central Finland. Silva Fennica vol. 39 no. 1 article id 392. https://doi.org/10.14214/sf.392
The aim of this study was to compare soil animal communities in planted birch (Betula pendula) stands of different origin with each other and with natural forests. Six 30-year-old birch stands were investigated, three planted after clear-cutting of spruce stands, and three planted on cultivated soil. The faunal communities were markedly different in plantations established on spruce forest soil and on arable soil. “Birch after Spruce” communities were relatively similar to those of coniferous forests, though the population densities were generally lower. “Birch after Field” communities were sparse and could be characterised as “impoverished forest communities”, except in Lumbricidae and Enchytraeidae that have affinities with deciduous forests and cultural landscapes. Soil conditions are not sufficient to explain the differences between the forests. Colonisation and transport by man may determine the presence of certain species, especially earthworms. These in turn affect soil properties, and compete with or otherwise have negative effects on other soil fauna. Thus the community differences between different forests are an outcome of several factors: soil characteristics, site history, colonisation ability and interspecific interactions.
  • Huhta, Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä University, Finland ORCID ID:E-mail: v.huhta@pp.inet.fi (email)
  • Räty, Ojalanlenkki 4, FI-80140 Joensuu, Finland ORCID ID:E-mail:

Category: Article

article id 7641, category Article
Veikko Huhta, Riitta Hyvönen, Antti Koskenniemi, Pekka Vilkamaa, Paula Kaasalainen, Minna Sulander. (1986). Response of soil fauna to fertilization and manipulation of pH in coniferous forests. Acta Forestalia Fennica no. 195 article id 7641. https://doi.org/10.14214/aff.7641

The effect of different fertilizer treatments on the invertebrate fauna on coniferous forest soil were investigated during the years 1979-83 both in field and in laboratory experiments. Fertilizers tested were urea (both alone and with P and K), ammonium nitrate and ashes. Ash-treatment was also controlled by raising the pH at the same level with Ca(OH)2.

Both ashes and urea resulted in considerable changes in the soil fauna. Nematodes, especially bacterial feeders, increased temporarily. Some families of Coleoptera invaded the urea-treated plots. Enchytraceid worms and several microarthropod species decreased, as well as the total animal biomass. Ash-treatment influenced more slowly than did urea-fertilizing, but it caused more permanent changes. Ammonium nitrate with lime had little influence in the field. All fertilizers affected more strongly when mixed with soil in laboratory. pH alone proved to explain most of the changes observed, but nitrogen as a nutrient also plays role independently of acidity.

The PDF includes a summary in Finnish.

  • Huhta, ORCID ID:E-mail:
  • Hyvönen, ORCID ID:E-mail:
  • Koskenniemi, ORCID ID:E-mail:
  • Vilkamaa, ORCID ID:E-mail:
  • Kaasalainen, ORCID ID:E-mail:
  • Sulander, ORCID ID:E-mail:

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