Phylogenetic or environmental control on the elemental and organo-chemical composition of Sphagnum mosses?

Juul Limpens*, Elisabet Bohlin, Mats B. Nilsson

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

13 Citations (Scopus)

Abstract

Background and aims: Plant litter chemistry is a key driver of decomposition in peatlands. This study explored the relative contributions of phylogeny and environment to litter chemistry of peat mosses (Sphagnum), the key peat-forming plants on earth. Methods: Fifteen Sphagnum species, representing three taxonomic sections ACUTIFOLIA, CUSPIDATA and SPHAGNUM, were sampled across a wide range of hydro-geochemical conditions. For all species we characterised chemical composition within (i) inorganic elements, (ii) carbohydrate polymers (iii) non-carbohydrates. Results: The variation in carbohydrates was mostly explained by taxonomic section, suggesting phylogenetic conservation of carbohydrate composition. ACUTIFOLIA species invested relatively more in pectins, whereas CUSPIDATA and SPHAGNUM species invested more in hemicellulose. The composition of non-carbohydrates was mainly influenced by environment, except for some constituents for which the variation was more correlated to phylogeny. Finally, the variation in inorganic element concentrations mostly reflected hydro-geochemical conditions within and between peatlands. Conclusions: The separation into an environmentally independent, phylogenetically conserved group of compounds (structural carbohydrates) and an environmentally dependent, variable group of compounds (inorganic elements, non-carbohydrates) has important implications both for understanding patterns in and for upscaling of spatially variable ecosystem processes associated with peat decomposition such as carbon sequestration, nutrient cycling and greenhouse gas emissions.
Original languageEnglish
Pages (from-to)69-85
JournalPlant and Soil
Volume417
Issue number1-2
DOIs
Publication statusPublished - 2017

Fingerprint

Sphagnum
moss
mosses and liverworts
carbohydrate
chemical composition
peatlands
carbohydrates
phylogenetics
peat
phylogeny
chemistry
peatland
inorganic compounds
carbohydrate composition
litter
degradation
decomposition
greenhouse gas emissions
hemicellulose
carbon sequestration

Keywords

  • Chemical traits
  • Environment
  • Litter chemistry
  • Mires
  • Peatlands
  • Phylogenetic control
  • Sphagnum

Cite this

@article{36606477f9b8490cb68de64fa5f3a79e,
title = "Phylogenetic or environmental control on the elemental and organo-chemical composition of Sphagnum mosses?",
abstract = "Background and aims: Plant litter chemistry is a key driver of decomposition in peatlands. This study explored the relative contributions of phylogeny and environment to litter chemistry of peat mosses (Sphagnum), the key peat-forming plants on earth. Methods: Fifteen Sphagnum species, representing three taxonomic sections ACUTIFOLIA, CUSPIDATA and SPHAGNUM, were sampled across a wide range of hydro-geochemical conditions. For all species we characterised chemical composition within (i) inorganic elements, (ii) carbohydrate polymers (iii) non-carbohydrates. Results: The variation in carbohydrates was mostly explained by taxonomic section, suggesting phylogenetic conservation of carbohydrate composition. ACUTIFOLIA species invested relatively more in pectins, whereas CUSPIDATA and SPHAGNUM species invested more in hemicellulose. The composition of non-carbohydrates was mainly influenced by environment, except for some constituents for which the variation was more correlated to phylogeny. Finally, the variation in inorganic element concentrations mostly reflected hydro-geochemical conditions within and between peatlands. Conclusions: The separation into an environmentally independent, phylogenetically conserved group of compounds (structural carbohydrates) and an environmentally dependent, variable group of compounds (inorganic elements, non-carbohydrates) has important implications both for understanding patterns in and for upscaling of spatially variable ecosystem processes associated with peat decomposition such as carbon sequestration, nutrient cycling and greenhouse gas emissions.",
keywords = "Chemical traits, Environment, Litter chemistry, Mires, Peatlands, Phylogenetic control, Sphagnum",
author = "Juul Limpens and Elisabet Bohlin and Nilsson, {Mats B.}",
year = "2017",
doi = "10.1007/s11104-017-3239-4",
language = "English",
volume = "417",
pages = "69--85",
journal = "Plant and Soil",
issn = "0032-079X",
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number = "1-2",

}

Phylogenetic or environmental control on the elemental and organo-chemical composition of Sphagnum mosses? / Limpens, Juul; Bohlin, Elisabet; Nilsson, Mats B.

In: Plant and Soil, Vol. 417, No. 1-2, 2017, p. 69-85.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Phylogenetic or environmental control on the elemental and organo-chemical composition of Sphagnum mosses?

AU - Limpens, Juul

AU - Bohlin, Elisabet

AU - Nilsson, Mats B.

PY - 2017

Y1 - 2017

N2 - Background and aims: Plant litter chemistry is a key driver of decomposition in peatlands. This study explored the relative contributions of phylogeny and environment to litter chemistry of peat mosses (Sphagnum), the key peat-forming plants on earth. Methods: Fifteen Sphagnum species, representing three taxonomic sections ACUTIFOLIA, CUSPIDATA and SPHAGNUM, were sampled across a wide range of hydro-geochemical conditions. For all species we characterised chemical composition within (i) inorganic elements, (ii) carbohydrate polymers (iii) non-carbohydrates. Results: The variation in carbohydrates was mostly explained by taxonomic section, suggesting phylogenetic conservation of carbohydrate composition. ACUTIFOLIA species invested relatively more in pectins, whereas CUSPIDATA and SPHAGNUM species invested more in hemicellulose. The composition of non-carbohydrates was mainly influenced by environment, except for some constituents for which the variation was more correlated to phylogeny. Finally, the variation in inorganic element concentrations mostly reflected hydro-geochemical conditions within and between peatlands. Conclusions: The separation into an environmentally independent, phylogenetically conserved group of compounds (structural carbohydrates) and an environmentally dependent, variable group of compounds (inorganic elements, non-carbohydrates) has important implications both for understanding patterns in and for upscaling of spatially variable ecosystem processes associated with peat decomposition such as carbon sequestration, nutrient cycling and greenhouse gas emissions.

AB - Background and aims: Plant litter chemistry is a key driver of decomposition in peatlands. This study explored the relative contributions of phylogeny and environment to litter chemistry of peat mosses (Sphagnum), the key peat-forming plants on earth. Methods: Fifteen Sphagnum species, representing three taxonomic sections ACUTIFOLIA, CUSPIDATA and SPHAGNUM, were sampled across a wide range of hydro-geochemical conditions. For all species we characterised chemical composition within (i) inorganic elements, (ii) carbohydrate polymers (iii) non-carbohydrates. Results: The variation in carbohydrates was mostly explained by taxonomic section, suggesting phylogenetic conservation of carbohydrate composition. ACUTIFOLIA species invested relatively more in pectins, whereas CUSPIDATA and SPHAGNUM species invested more in hemicellulose. The composition of non-carbohydrates was mainly influenced by environment, except for some constituents for which the variation was more correlated to phylogeny. Finally, the variation in inorganic element concentrations mostly reflected hydro-geochemical conditions within and between peatlands. Conclusions: The separation into an environmentally independent, phylogenetically conserved group of compounds (structural carbohydrates) and an environmentally dependent, variable group of compounds (inorganic elements, non-carbohydrates) has important implications both for understanding patterns in and for upscaling of spatially variable ecosystem processes associated with peat decomposition such as carbon sequestration, nutrient cycling and greenhouse gas emissions.

KW - Chemical traits

KW - Environment

KW - Litter chemistry

KW - Mires

KW - Peatlands

KW - Phylogenetic control

KW - Sphagnum

U2 - 10.1007/s11104-017-3239-4

DO - 10.1007/s11104-017-3239-4

M3 - Article

VL - 417

SP - 69

EP - 85

JO - Plant and Soil

JF - Plant and Soil

SN - 0032-079X

IS - 1-2

ER -