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

Rousk, Johannes LU and Nadkarni, Nalini M. (2009) In Soil Biology & Biochemistry 41(4). p.862-865
Abstract
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... (More)
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. (C) 2009 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Fungal growth, Epiphytes, Canopy soil, Acetate incorporation into ergosterol, Bacterial growth, forest, Temperate coniferous, Leucine incorporation
in
Soil Biology & Biochemistry
volume
41
issue
4
pages
862 - 865
publisher
Elsevier
external identifiers
  • wos:000265325300025
  • scopus:62049083764
ISSN
0038-0717
DOI
10.1016/j.soilbio.2009.02.008
project
Carbon drivers and microbial agents of soil respiration
Effect of environmental factors on fungal and bacterial growth in soil
Microbial carbon-use efficiency
language
English
LU publication?
yes
id
7f7ef4bc-7499-4922-9893-5554bde87b6b (old id 1399406)
date added to LUP
2009-06-15 15:32:20
date last changed
2017-01-01 05:36:58
@article{7f7ef4bc-7499-4922-9893-5554bde87b6b,
  abstract     = {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. (C) 2009 Elsevier Ltd. All rights reserved.},
  author       = {Rousk, Johannes and Nadkarni, Nalini M.},
  issn         = {0038-0717},
  keyword      = {Fungal growth,Epiphytes,Canopy soil,Acetate incorporation into ergosterol,Bacterial growth,forest,Temperate coniferous,Leucine incorporation},
  language     = {eng},
  number       = {4},
  pages        = {862--865},
  publisher    = {Elsevier},
  series       = {Soil Biology & Biochemistry},
  title        = {Growth measurements of saprotrophic fungi and bacteria reveal differences between canopy and forest floor soils},
  url          = {http://dx.doi.org/10.1016/j.soilbio.2009.02.008},
  volume       = {41},
  year         = {2009},
}