Du är här

Growth measurements of saprotrophic fungi and bacteria reveal differences between canopy and forest floor soils

Författare:
Publiceringsår: 2009
Språk: Engelska
Sidor: 862-865
Publikation/Tidskrift/Serie: Soil Biology & Biochemistry
Volym: 41
Nummer: 4
Dokumenttyp: Artikel
Förlag: Elsevier

Sammanfattning

Canopy-held organic matter develops into a distinct soil system separate from the forest floor in wet temperate coniferous forests, creating a natural microcosm. We distinguished between fungal and bacterial components of the decomposer community in one site with Maple (Acer macrophyllum) and one site with Alder (Alnus rubra) by using direct measurements of growth; acetate incorporation into ergosterol, and leucine incorporation for fungi and bacteria, respectively. The higher organic matter content of the canopy soils correlated with higher fungal growth. The relative importance of fungi, indicated by fungal:bacterial growth ratio, was higher in the canopy soil of the Maple site, while there was no difference in the Alder site. The high C:N ratio of the Maple canopy soil likely contributed to this difference. These results demonstrate a divergence between canopy and forest floor that should be explored to gain insights in decomposer ecology using the natural microcosms that the canopy soils provide.

Disputation

Nyckelord

  • Biology and Life Sciences
  • Acetate incorporation into ergosterol
  • Bacterial growth
  • Canopy soil
  • Temperate coniferous forest
  • Leucine incorporation
  • Fungal growth
  • Epiphytes

Övrigt

Published
  • Interaction between fungi and bacteria in soil
  • Microbial carbon-use efficiency
Yes
  • Microbial Ecology
  • ISSN: 0038-0717 (Print)

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen

LERU logo U21 logo