Vegetation changes in temperate ombrotrophic peatlands over a 35 year period

Pinceloup, Nicolas; Poulin, Monique; Brice, Marie‐Hélène; Pellerin, Stéphanie

doi:10.1371/journal.pone.0229146

Cited by 22 publications

(17 citation statements)

References 72 publications

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“…In line with earlier work where it was suggested that changes in enviro–climatic conditions in peatland ecosystems lead to a significant turnover in the composition of the plant community (Robroek et al 2017), plant community composition was highly distinctive between sites. Moreover, our study confirms previous suggestions that enviro–climatic conditions are important drivers that underlie the composition of the vegetation, and that changes in these drivers result in alterations of the plant community (Gunnarsson et al 2002, Pinceloup et al 2020) and associated biotic interactions (Wiedermann et al 2007). Indeed, we note that site‐specificity of plant communities extends to the prokaryotic community, a pattern that is likely explained by the strong links between plant and microbial communities (Chronakova et al 2019, Ivanova et al 2020).…”

Section: Discussionsupporting

confidence: 91%

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Rewiring of peatland plant–microbe networks outpaces species turnover

Robroek

Martí

Svensson

et al. 2021

Oikos

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Enviro–climatic changes are thought to be causing alterations in ecosystem processes through shifts in plant and microbial communities; however, how links between plant and microbial communities change with enviro–climatic change is likely to be less straightforward but may be fundamental for many ecological processes. To address this, we assessed the composition of the plant community and the prokaryotic community – using amplicon‐based sequencing – of three European peatlands that were distinct in enviro–climatic conditions. Bipartite networks were used to construct site‐specific plant–prokaryote co‐occurrence networks. Our data show that between sites, plant and prokaryotic communities differ and that turnover in interactions between the communities was complex. Essentially, turnover in plant–microbial interactions is much faster than turnover in the respective communities. Our findings suggest that network rewiring does largely result from novel or different interactions between species common to all realised networks. Hence, turnover in network composition is largely driven by the establishment of new interactions between a core community of plants and microorganisms that are shared among all sites. Taken together our results indicate that plant–microbe associations are context dependent, and that changes in enviro–climatic conditions will likely lead to network rewiring. Integrating turnover in plant–microbe interactions into studies that assess the impact of enviro–climatic change on peatland ecosystems is essential to understand ecosystem dynamics and must be combined with studies on the impact of these changes on ecosystem processes.

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Section: Discussionsupporting

confidence: 91%

“…1). Hence, a turnover in the plant community as shown in earlier research (Gunnarsson et al 2002, Robroek et al 2017, Pinceloup et al 2020) will lead to complex changes in plant–microbe interactions that could affect ecosystem processes in the longer term (Morriën et al 2017).…”

Section: Discussionmentioning

confidence: 96%

Rewiring of peatland plant–microbe networks outpaces species turnover

Robroek

Martí

Svensson

et al. 2021

Oikos

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“…Moreover, our study confirms previous suggestions that enviro-climatological conditions are important drivers that underlie the composition of the vegetation, and that changes in these drivers result in alterations of the plant community (Gunnarsson et al 2002, Pinceloup et al 2020) and associated biotic interactions (Wiedermann et al 2007). Indeed, we note that site-specificity of plant communities is paralleled in the prokaryotic community, a pattern that is likely explained by the strong links between plant and microbial communities (Chronakova et al 2019;Ivanova et al 2020).…”

Section: Discussionsupporting

confidence: 90%

“…As these peatlands are situated in three distinct environmental zones (Metzger et al 2005) our data suggest that these networks are vulnerable to the effects of enviro-climatological change, and turnover at a faster rate than the individual biotic levels that comprise these networks. Hence, a turnover in the plant community as shown in earlier research (Gunnarsson et al 2002, Pinceloup et al 2020) will lead to complex changes in plant-microbe interactions that could affect ecosystem processes in the longer term (Morriën et al 2017).…”

Section: Discussionmentioning

confidence: 93%

Rewiring of peatland plant-microbe networks outpaces species turnover

Robroek

Martí

Svensson

et al. 2020

Preprint

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Enviro-climatological changes are thought to be causing alterations in ecosystem processes through shifts in plant and microbial communities. However, how links between plant and microbial communities change with enviro-climatological change is likely to be less straightforward, but may be fundamental for many ecological processes. To address this, we assessed the composition of the plant community and the prokaryotic community -using amplicon-based sequencing-of three European peatlands that were distinct in enviro-climatological conditions. Bipartite networks were used to construct site-specific plant-prokaryote co-occurrence networks. Our data show that between sites, plant and prokaryotic communities differ and that turnover in interactions between the communities was complex. Essentially, turnover in plant-microbial interactions is much faster than turnover in the respective communities. Our findings suggest that network rewiring does largely result from novel associations between species that are common and shared across the networks. Turnover in network composition is largely driven by novel interactions between a core community of plants and microorganisms. Taken together our results indicate that the functional role of species is context dependent, and that changes in enviro-climatological conditions will likely lead to network rewiring.Integrating turnover in plant-microbe interactions into studies that assess the impact of enviroclimatological change on peatland ecosystems is essential to understand ecosystem dynamics and must be combined with studies on the impact of these changes on ecosystem processes. Keywordsmicrobial and plant diversity, plant-microbe interactions, bipartite networks, 16SrRNA, 16S amplicon sequencing, peatlands.

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“…Peatlands in Europe and eastern and central Canada (0–60°E and 0–120°W; Figure 4g–l) are more productive than others (Figure 4g,h), while graminoids are more productive between 0–60°W and 120–180°E due to high moisture availability in near‐coastal environments (Figure 4i). Shrubs are the dominant plant type between 45 and 55°N due to high insolation and deeper WTP (Aerts et al, 1999; Pinceloup, Poulin, Brice, & Pellerin, 2020). In reality, many peatland areas are dominated by trees in such low latitudes, which is not represented in the model employed for this study, as there are challenges in dealing with the carbon produced by trees (Chaudhary et al, 2017a).…”

Section: Resultsmentioning

confidence: 99%

Modelling past and future peatland carbon dynamics across the pan‐Arctic

Chaudhary

Westermann

Lamba

et al. 2020

Global Change Biology

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The majority of northern peatlands were initiated during the Holocene. Owing to their mass imbalance, they have sequestered huge amounts of carbon in terrestrial ecosystems. Although recent syntheses have filled some knowledge gaps, the extent and remoteness of many peatlands pose challenges to developing reliable regional carbon accumulation estimates from observations. In this work, we employed an individual‐ and patch‐based dynamic global vegetation model (LPJ‐GUESS) with peatland and permafrost functionality to quantify long‐term carbon accumulation rates in northern peatlands and to assess the effects of historical and projected future climate change on peatland carbon balance. We combined published datasets of peat basal age to form an up‐to‐date peat inception surface for the pan‐Arctic region which we then used to constrain the model. We divided our analysis into two parts, with a focus both on the carbon accumulation changes detected within the observed peatland boundary and at pan‐Arctic scale under two contrasting warming scenarios (representative concentration pathway—RCP8.5 and RCP2.6). We found that peatlands continue to act as carbon sinks under both warming scenarios, but their sink capacity will be substantially reduced under the high‐warming (RCP8.5) scenario after 2050. Areas where peat production was initially hampered by permafrost and low productivity were found to accumulate more carbon because of the initial warming and moisture‐rich environment due to permafrost thaw, higher precipitation and elevated CO2 levels. On the other hand, we project that areas which will experience reduced precipitation rates and those without permafrost will lose more carbon in the near future, particularly peatlands located in the European region and between 45 and 55°N latitude. Overall, we found that rapid global warming could reduce the carbon sink capacity of the northern peatlands in the coming decades.

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Vegetation changes in temperate ombrotrophic peatlands over a 35 year period

Cited by 22 publications

References 72 publications

Rewiring of peatland plant–microbe networks outpaces species turnover

Rewiring of peatland plant–microbe networks outpaces species turnover

Rewiring of peatland plant-microbe networks outpaces species turnover

Modelling past and future peatland carbon dynamics across the pan‐Arctic

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