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Warming effects on greenhouse gas fluxes in peatlands are modulated by vegetation composition

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Warming effects on greenhouse gas fluxes in peatlands are modulated by vegetation composition. / Ward, Sue; Ostle, Nick; Oakley, Simon; Quirk, Helen; Henrys, Peter; Bardgett, Richard.

In: Ecology Letters, Vol. 16, No. 10, 10.2013, p. 1285-1293.

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@article{85f7de3628994c169d21e7b93de795d0,
title = "Warming effects on greenhouse gas fluxes in peatlands are modulated by vegetation composition",
abstract = "Understanding the effects of warming on greenhouse gas feedbacks to climate change represents a major global challenge. Most research has focused on direct effects of warming, without considering how concurrent changes in plant communities may alter such effects. Here, we combined vegetation manipulations with warming to investigate their interactive effects on greenhouse gas emissions from peatland. We found that although warming consistently increased respiration, the effect on net ecosystem CO2 exchange depended on vegetation composition. The greatest increase in CO2 sink strength after warming was when shrubs were present, and the greatest decrease when graminoids were present. CH4 was more strongly controlled by vegetation composition than by warming, with largest emissions from graminoid communities. Our results show that plant community composition is a significant modulator of greenhouse gas emissions and their response to warming, and suggest that vegetation change could alter peatland carbon sink strength under future climate change. ",
keywords = "Warming, greenhouse gas, plant functional group, plant community composition, peatland, CO2, CH4, N2O, carbon cycle",
author = "Sue Ward and Nick Ostle and Simon Oakley and Helen Quirk and Peter Henrys and Richard Bardgett",
year = "2013",
month = oct,
doi = "10.1111/ele.12167",
language = "English",
volume = "16",
pages = "1285--1293",
journal = "Ecology Letters",
issn = "1461-023X",
publisher = "Wiley",
number = "10",

}

RIS

TY - JOUR

T1 - Warming effects on greenhouse gas fluxes in peatlands are modulated by vegetation composition

AU - Ward, Sue

AU - Ostle, Nick

AU - Oakley, Simon

AU - Quirk, Helen

AU - Henrys, Peter

AU - Bardgett, Richard

PY - 2013/10

Y1 - 2013/10

N2 - Understanding the effects of warming on greenhouse gas feedbacks to climate change represents a major global challenge. Most research has focused on direct effects of warming, without considering how concurrent changes in plant communities may alter such effects. Here, we combined vegetation manipulations with warming to investigate their interactive effects on greenhouse gas emissions from peatland. We found that although warming consistently increased respiration, the effect on net ecosystem CO2 exchange depended on vegetation composition. The greatest increase in CO2 sink strength after warming was when shrubs were present, and the greatest decrease when graminoids were present. CH4 was more strongly controlled by vegetation composition than by warming, with largest emissions from graminoid communities. Our results show that plant community composition is a significant modulator of greenhouse gas emissions and their response to warming, and suggest that vegetation change could alter peatland carbon sink strength under future climate change.

AB - Understanding the effects of warming on greenhouse gas feedbacks to climate change represents a major global challenge. Most research has focused on direct effects of warming, without considering how concurrent changes in plant communities may alter such effects. Here, we combined vegetation manipulations with warming to investigate their interactive effects on greenhouse gas emissions from peatland. We found that although warming consistently increased respiration, the effect on net ecosystem CO2 exchange depended on vegetation composition. The greatest increase in CO2 sink strength after warming was when shrubs were present, and the greatest decrease when graminoids were present. CH4 was more strongly controlled by vegetation composition than by warming, with largest emissions from graminoid communities. Our results show that plant community composition is a significant modulator of greenhouse gas emissions and their response to warming, and suggest that vegetation change could alter peatland carbon sink strength under future climate change.

KW - Warming

KW - greenhouse gas

KW - plant functional group

KW - plant community composition

KW - peatland

KW - CO2

KW - CH4

KW - N2O

KW - carbon cycle

U2 - 10.1111/ele.12167

DO - 10.1111/ele.12167

M3 - Journal article

VL - 16

SP - 1285

EP - 1293

JO - Ecology Letters

JF - Ecology Letters

SN - 1461-023X

IS - 10

ER -