Oecologia

, Volume 138, Issue 3, pp 419–425

Species-specific measurements of ectomycorrhizal turnover under N-fertilization: combining isotopic and genetic approaches

  • Kathleen K. Treseder
  • C. A. Masiello
  • J. L. Lansing
  • M. F. Allen
Ecosystems Ecology

DOI: 10.1007/s00442-003-1441-y

Cite this article as:
Treseder, K.K., Masiello, C.A., Lansing, J.L. et al. Oecologia (2004) 138: 419. doi:10.1007/s00442-003-1441-y

Abstract

Ectomycorrhizal fungi play a significant role in the transfer of nutrients between plant and soil pools. Here we combine natural abundance 14C measurements with restriction fragment length polymorphism (RFLP) to study the effects of nitrogen fertilization on the residence time of carbon within ectomycorrhizal species. We show that the carbon in ectomycorrhizal fungi turns over every 4–5 years, indicating that these fungi are relatively long-lived. Moreover, ectomycorrhizal fungi responded in a species-specific way to fertilization. Cenococcum geophilum contained younger carbon on average in nitrogen-fertilized plots than in control plots, even though turnover rates of the community as a whole did not shift significantly. Our results suggest that the response of ectomycorrhizal fungi to N availability is complex, and alterations in tissue turnover within this microbial pool may vary depending on community structure.

Keywords

Anthropogenic nitrogen deposition  Pinus edulis Radiocarbon RFLP Community composition 

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • Kathleen K. Treseder
    • 1
    • 5
  • C. A. Masiello
    • 1
    • 2
    • 6
  • J. L. Lansing
    • 1
    • 3
  • M. F. Allen
    • 1
    • 4
  1. 1.Department of BiologyUniversity of PennsylvaniaPhiladelphiaUSA
  2. 2.Lawrence Livermore National LaboratoryLivermoreUSA
  3. 3.Department of BiologyUniversity of PennsylvaniaPhiladelphiaUSA
  4. 4.Center for Conservation BiologyUniversity of CaliforniaRiversideUSA
  5. 5.Department of Ecology and Evolutionary Biology and Department of Earth System ScienceUniversity of CaliforniaIrvineUSA
  6. 6.Department of GeographyUC Santa BarbaraSanta BarbaraUSA

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