Food web uncertainties influence predictions of climate change effects on soil carbon sequestration in heathlands

Wouter Reyns, Francois Rineau, Jurg Spaak, Oscar Franken, Matty Berg, Fons Van der Plas, Richard Bardgett, Natalie Beenaerts, Frédérik De Laender

Research output: Contribution to journalArticle

Abstract

Carbon cycling models consider soil carbon sequestrationa key process forclimate change mitigation. However, these models mostly focus on abiotic soil processes and, despite its recognizedcritical mechanistic role,do not explicitly include interacting soil organisms. Here, we use a literature study to show that even a relatively simple soil community (heathland soils) containslarge uncertainties in temporal and spatialfood web structure. Next, we used a Lotka-Volterra-based food web model to demonstratethat, due tothese uncertainties, climate change can eitherincrease ordecrease soil carbon sequestration to varying extents. Both the strength and direction of changes strongly depend on: (1) the main consumer’s (enchytraeid worms) feeding preferences; and (2) whether decomposers (fungi) or enchytraeid worms are more sensitive to stress. Hence, even for asoil community with a few dominant functional groups and a simulation model with a few parameters ,filling theseknowledge gaps isacritical first steptowardsthe explicit integration of soil food web dynamicsinto carboncycling models in order tobetter assess48the role soils play in climate change mitigation.
Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalMicrobial Ecology
DOIs
Publication statusPublished - 25 Oct 2019

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heathland
heathlands
soil carbon
carbon sequestration
food webs
food web
uncertainty
climate change
prediction
soil
heathland soils
soil food webs
carbon
feeding preferences
simulation models
functional group
mitigation
fungi
effect
fungus

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Reyns, Wouter ; Rineau, Francois ; Spaak, Jurg ; Franken, Oscar ; Berg, Matty ; Van der Plas, Fons ; Bardgett, Richard ; Beenaerts, Natalie ; De Laender, Frédérik. / Food web uncertainties influence predictions of climate change effects on soil carbon sequestration in heathlands. In: Microbial Ecology. 2019 ; pp. 1-8.
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abstract = "Carbon cycling models consider soil carbon sequestrationa key process forclimate change mitigation. However, these models mostly focus on abiotic soil processes and, despite its recognizedcritical mechanistic role,do not explicitly include interacting soil organisms. Here, we use a literature study to show that even a relatively simple soil community (heathland soils) containslarge uncertainties in temporal and spatialfood web structure. Next, we used a Lotka-Volterra-based food web model to demonstratethat, due tothese uncertainties, climate change can eitherincrease ordecrease soil carbon sequestration to varying extents. Both the strength and direction of changes strongly depend on: (1) the main consumer’s (enchytraeid worms) feeding preferences; and (2) whether decomposers (fungi) or enchytraeid worms are more sensitive to stress. Hence, even for asoil community with a few dominant functional groups and a simulation model with a few parameters ,filling theseknowledge gaps isacritical first steptowardsthe explicit integration of soil food web dynamicsinto carboncycling models in order tobetter assess48the role soils play in climate change mitigation.",
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Food web uncertainties influence predictions of climate change effects on soil carbon sequestration in heathlands. / Reyns, Wouter; Rineau, Francois; Spaak, Jurg; Franken, Oscar; Berg, Matty; Van der Plas, Fons; Bardgett, Richard; Beenaerts, Natalie; De Laender, Frédérik.

In: Microbial Ecology, 25.10.2019, p. 1-8.

Research output: Contribution to journalArticle

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T1 - Food web uncertainties influence predictions of climate change effects on soil carbon sequestration in heathlands

AU - Reyns, Wouter

AU - Rineau, Francois

AU - Spaak, Jurg

AU - Franken, Oscar

AU - Berg, Matty

AU - Van der Plas, Fons

AU - Bardgett, Richard

AU - Beenaerts, Natalie

AU - De Laender, Frédérik

PY - 2019/10/25

Y1 - 2019/10/25

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AB - Carbon cycling models consider soil carbon sequestrationa key process forclimate change mitigation. However, these models mostly focus on abiotic soil processes and, despite its recognizedcritical mechanistic role,do not explicitly include interacting soil organisms. Here, we use a literature study to show that even a relatively simple soil community (heathland soils) containslarge uncertainties in temporal and spatialfood web structure. Next, we used a Lotka-Volterra-based food web model to demonstratethat, due tothese uncertainties, climate change can eitherincrease ordecrease soil carbon sequestration to varying extents. Both the strength and direction of changes strongly depend on: (1) the main consumer’s (enchytraeid worms) feeding preferences; and (2) whether decomposers (fungi) or enchytraeid worms are more sensitive to stress. Hence, even for asoil community with a few dominant functional groups and a simulation model with a few parameters ,filling theseknowledge gaps isacritical first steptowardsthe explicit integration of soil food web dynamicsinto carboncycling models in order tobetter assess48the role soils play in climate change mitigation.

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