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Long-term effects of short-term perturbation in a subalpine grassland

Spiegelberger, T; Hegg, O; Matthies, D; Hedlund, Katarina LU and Schaffner, U (2006) In Ecology 87(8). p.1939-1944
Abstract
Theoretical advances and short-term experimental studies have furthered our understanding of how ecosystems respond to perturbation. However, there are few well-replicated experimental studies that allow an assessment of long-term responses. Results from a controlled, large-scale field experiment in a subalpine grassland near Interlaken, Switzerland, show that 2-4 years of liming (Ca: 40 g center dot m(-2)center dot yr(-1)) still significantly affected the composition of the vegetation and the soil microbial community nearly 70 years after the treatments were imposed, whereas NPK fertilization (8 g center dot m(-2)center dot yr(-1)) only marginally affected vegetation composition. The exchangeable content of Ca ions and soil pH were higher... (More)
Theoretical advances and short-term experimental studies have furthered our understanding of how ecosystems respond to perturbation. However, there are few well-replicated experimental studies that allow an assessment of long-term responses. Results from a controlled, large-scale field experiment in a subalpine grassland near Interlaken, Switzerland, show that 2-4 years of liming (Ca: 40 g center dot m(-2)center dot yr(-1)) still significantly affected the composition of the vegetation and the soil microbial community nearly 70 years after the treatments were imposed, whereas NPK fertilization (8 g center dot m(-2)center dot yr(-1)) only marginally affected vegetation composition. The exchangeable content of Ca ions and soil pH were higher in limed plots but were unaffected in fertilized plots. Plant species and PLFAs (phospholipid fatty acids) indicating low pH values were found in higher abundance in the unlimed plots, suggesting that the long-lasting effects of liming on the above- and belowground communities were mediated through changes in soil pH. The results of this long-term study indicate that the resilience of mountain ecosystems may be particularly low in response to perturbations that substantially alter soil pH or other key determinants of belowground processes. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Ecology
volume
87
issue
8
pages
1939 - 1944
publisher
Ecological Society of America
external identifiers
  • wos:000239833400009
  • scopus:33747081922
ISSN
0012-9658
DOI
10.1890/0012-9658(2006)87[1939:LEOSPI]2.0.CO;2
language
English
LU publication?
yes
id
60362ee7-36ad-4b3a-b77a-041eb0c8b79d (old id 162602)
date added to LUP
2007-06-27 12:37:53
date last changed
2019-06-11 02:24:32
@article{60362ee7-36ad-4b3a-b77a-041eb0c8b79d,
  abstract     = {Theoretical advances and short-term experimental studies have furthered our understanding of how ecosystems respond to perturbation. However, there are few well-replicated experimental studies that allow an assessment of long-term responses. Results from a controlled, large-scale field experiment in a subalpine grassland near Interlaken, Switzerland, show that 2-4 years of liming (Ca: 40 g center dot m(-2)center dot yr(-1)) still significantly affected the composition of the vegetation and the soil microbial community nearly 70 years after the treatments were imposed, whereas NPK fertilization (8 g center dot m(-2)center dot yr(-1)) only marginally affected vegetation composition. The exchangeable content of Ca ions and soil pH were higher in limed plots but were unaffected in fertilized plots. Plant species and PLFAs (phospholipid fatty acids) indicating low pH values were found in higher abundance in the unlimed plots, suggesting that the long-lasting effects of liming on the above- and belowground communities were mediated through changes in soil pH. The results of this long-term study indicate that the resilience of mountain ecosystems may be particularly low in response to perturbations that substantially alter soil pH or other key determinants of belowground processes.},
  author       = {Spiegelberger, T and Hegg, O and Matthies, D and Hedlund, Katarina and Schaffner, U},
  issn         = {0012-9658},
  language     = {eng},
  number       = {8},
  pages        = {1939--1944},
  publisher    = {Ecological Society of America},
  series       = {Ecology},
  title        = {Long-term effects of short-term perturbation in a subalpine grassland},
  url          = {http://dx.doi.org/10.1890/0012-9658(2006)87[1939:LEOSPI]2.0.CO;2},
  volume       = {87},
  year         = {2006},
}