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  4. Nutrient stoichiometry in Sphagnum along a nitrogen deposition gradient in highly polluted region of Central-East Europe
 
research article

Nutrient stoichiometry in Sphagnum along a nitrogen deposition gradient in highly polluted region of Central-East Europe

Jirousek, Martin
•
Hajek, Michal
•
Bragazza, Luca  
2011
Environmental Pollution

We investigated the variation of N:P and N:K ratio in ombrotrophic Sphagnum plants along a gradient of atmospheric N deposition from 1 to 2.5 g m(-2) year(-1) in Central-East Europe. The N:P and N:K ratio in Sphagnum capitula increased significantly along the N deposition gradient. Sphagnum species from the Cuspidata section were characterised by significantly lower ratios at low N deposition. When we compared the observed N:P ratios in Sphagnum plants with the values reported in a previous European-wide study, we found a correspondence in nutrient stoichiometry only for a few bogs: higher P concentration in Sphagnum capitula caused a lower N:P ratio in most of the study bogs so that Sphagnum plants still seem N-limited despite their N saturation. Interaction between summer water table decrease and aerial liming of surrounding forests is proposed as an explanation for this discrepancy. Local forestry practice interacting with climate thus alter N:P stoichiometry of Sphagnum along the N deposition gradient. (C) 2010 Elsevier Ltd. All rights reserved.

  • Details
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Type
research article
DOI
10.1016/j.envpol.2010.10.004
Web of Science ID

WOS:000286963000031

Author(s)
Jirousek, Martin
Hajek, Michal
Bragazza, Luca  
Date Issued

2011

Published in
Environmental Pollution
Volume

159

Start page

585

End page

590

Subjects

Aerial liming

•

Eutrophication

•

Immission

•

Nutrient limitation

•

Peatland

•

N Deposition

•

Phosphorus Limitation

•

Ombrotrophic Bogs

•

Plants

•

Vegetation

•

Availability

•

Bryophytes

•

Growth

•

Water

•

Decomposition

Editorial or Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
ECOS  
Available on Infoscience
July 21, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/69683
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