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Direct estimates of C : N ratios of ectomycorrhizal mycelia collected from Norway spruce forest soils

Publiceringsår: 2003
Språk: Engelska
Sidor: 997-999
Publikation/Tidskrift/Serie: Soil Biology & Biochemistry
Volym: 35
Nummer: 7
Dokumenttyp: Artikel i tidskrift
Förlag: Elsevier


Direct estimates of C:N ratios of ectomycorrhizal (EM) mycelia growing in situ in forest soils have been obtained for the first time. The mycelial samples were collected from sand-filled mesh bags that were buried in the soil and incubated for 12-18 months in two Norway spruce forests in southern Sweden. At harvest the mesh bags were heavily colonized and the mycelia were extracted from the sand with water. The collected mycelia had earlier been identified as belonging to EM fungi based on their C isotopic composition. The mean value of the C:N ratio for mycelia was 20.2 +/- 0.8 (n = 25). EM mycelia collected at different soil depths (5, 15 and 30 cm) had similar C:N ratios. C:N ratios of microbial biomass obtained by fumigation - extraction of similar soils have usually been lower (6-13) so possible differences in the extraction efficiency of C and N from bacteria and fungi are discussed.


  • Biological Sciences


  • Microbial Ecology
  • ISSN: 0038-0717

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