Cited by 65Peatlands and Wetlands EcologySoil Carbon and Nitrogen DynamicsClimate change and permafrost

The cascade of C:N:P stoichiometry in an ombrotrophic peatland: from plants to peat

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Wang, Meng, Moore, Tim R, Talbot, Julie, Richard, Pierre J H·2014·Environmental Research Letters

Abstract

Northern peatlands are important carbon (C) sinks and while the patterns of C accumulation have been frequently investigated, nitrogen (N) and phosphorus (P) accumulation are often neglected. Here we link the C:N:P stoichiometry from foliar plant tissues, through senescent litters to peat, and determine C, N and P accumulation rates at Mer Bleue Bog, eastern Canada. Average C:N:P ratios changed from 794:17:1 in the foliar tissues to 911:10:1 in litter and 1285:32:1 in acrotelm peat. The increase in C:N and C:P ratios from mature to senescent tissues is related to nutrient resorption. The increase in C:P and N:P ratios in peat, which was contrary to that observed in Canadian forest soils, may be related to plant/mycorrhizae uptake of P. The long-term apparent rates of C, N and P accumulation were 29.5 ± 2.1 (SE) g C, 0.87 ± 0.01 g N and 0.017 ± 0.002 g P m −2 yr −1 , respectively. The significant correlation between the accumulation rates of N and P and that of C suggests more attention be placed on C:N:P stoichiometry in peatland biogeochemistry, in particular in understanding why C:P ratios are so large in the lower parts of the profile.

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  • Early Devonian coaly shales indicate extensive peatlands 410-400 Ma and have C/N of 44-119, comparable to modern peatlands where C/P ratios tend to increase with depth to C/P >3,000.

    “Furthermore, Early Devonian coaly shales indicate extensive peatlands 410 -400 Ma and have C/N of 44 -119 (28), comparable to that in modern peatlands where N/P and C/P ratios tend to increase with depth to C/P > 3,000 (34).”

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Authors
Wang, M., Moore, T. R., Talbot, J., & Richard, P. J. H.
Affiliations
  • McGill University (CA)
  • Université de Montréal (CA)
Corresponding author
Wang, Meng
Venue
Environmental Research Letters
Published
2014-01-01
Volume
9
Issue
2
Pages
024003
ISSN
1748-9326 (ISSN-L)
OpenAlex
W2147619265
Cited by
65
References
35
Citations by year
2026: 3 · 2025: 2 · 2024: 5 · 2023: 4 · 2022: 12 · 2021: 7 · 2020: 3 · 2019: 6 · 2018: 7 · 2017: 4 · 2016: 5 · 2015: 2 · 2014: 5
FWCI
4.64
Type
journal article
Language
en
Open access
Locations
  • Environmental Research Letters (publishedVersion, cc-by)
  • eScholarship@McGill (McGill) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • eScholarship@McGill (McGill) (submittedVersion, cc-by)
Topics
  • Physical Sciences › Environmental Science › Ecology › Peatlands and Wetlands Ecology
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Climate change and permafrost
Keywords
C:N:P stoichiometry, ombrotrophic peatlands, peat formation, nutrient resorption, phosphorus accumulation, nitrogen accumulation, carbon accumulation, Mer Bleue bog, peatland carbon sink

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