Ericoid shrub encroachment shifts aboveground–belowground linkages in three peatlands across Europe and Western Siberia
Abstract In northern peatlands, reduction of Sphagnum dominance in favour of vascular vegetation is likely to influence biogeochemical processes. Such vegetation changes occur as the water table lowers and temperatures rise. To test which of these factors has a significant influence on peatland vege...
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Online Access: | http://dx.doi.org/10.1111/gcb.16904 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16904 |
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crwiley:10.1111/gcb.16904 2024-09-15T18:38:06+00:00 Ericoid shrub encroachment shifts aboveground–belowground linkages in three peatlands across Europe and Western Siberia Buttler, Alexandre Bragazza, Luca Laggoun‐Défarge, Fatima Gogo, Sebastien Toussaint, Marie‐Laure Lamentowicz, Mariusz Chojnicki, Bogdan H. Słowiński, Michał Słowińska, Sandra Zielińska, Małgorzata Reczuga, Monika Barabach, Jan Marcisz, Katarzyna Lamentowicz, Łukasz Harenda, Kamila Lapshina, Elena Gilbert, Daniel Schlaepfer, Rodolphe Jassey, Vincent E. J. Agence Nationale de la Recherche 2023 http://dx.doi.org/10.1111/gcb.16904 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16904 en eng Wiley http://creativecommons.org/licenses/by-nc/4.0/ Global Change Biology volume 29, issue 23, page 6772-6793 ISSN 1354-1013 1365-2486 journal-article 2023 crwiley https://doi.org/10.1111/gcb.16904 2024-06-27T04:22:46Z Abstract In northern peatlands, reduction of Sphagnum dominance in favour of vascular vegetation is likely to influence biogeochemical processes. Such vegetation changes occur as the water table lowers and temperatures rise. To test which of these factors has a significant influence on peatland vegetation, we conducted a 3‐year manipulative field experiment in Linje mire (northern Poland). We manipulated the peatland water table level (wet, intermediate and dry; on average the depth of the water table was 17.4, 21.2 and 25.3 cm respectively), and we used open‐top chambers (OTCs) to create warmer conditions (on average increase of 1.2°C in OTC plots compared to control plots). Peat drying through water table lowering at this local scale had a larger effect than OTC warming treatment per see on Sphagnum mosses and vascular plants. In particular, ericoid shrubs increased with a lower water table level, while Sphagnum decreased. Microclimatic measurements at the plot scale indicated that both water‐level and temperature, represented by heating degree days (HDDs), can have significant effects on the vegetation. In a large‐scale complementary vegetation gradient survey replicated in three peatlands positioned along a transitional oceanic–continental and temperate–boreal (subarctic) gradient (France–Poland–Western Siberia), an increase in ericoid shrubs was marked by an increase in phenols in peat pore water, resulting from higher phenol concentrations in vascular plant biomass. Our results suggest a shift in functioning from a mineral‐N‐driven to a fungi‐mediated organic‐N nutrient acquisition with shrub encroachment. Both ericoid shrub encroachment and higher mean annual temperature in the three sites triggered greater vascular plant biomass and consequently the dominance of decomposers (especially fungi), which led to a feeding community dominated by nematodes. This contributed to lower enzymatic multifunctionality. Our findings illustrate mechanisms by which plants influence ecosystem responses to climate change, ... Article in Journal/Newspaper Subarctic Siberia Wiley Online Library Global Change Biology 29 23 6772 6793 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract In northern peatlands, reduction of Sphagnum dominance in favour of vascular vegetation is likely to influence biogeochemical processes. Such vegetation changes occur as the water table lowers and temperatures rise. To test which of these factors has a significant influence on peatland vegetation, we conducted a 3‐year manipulative field experiment in Linje mire (northern Poland). We manipulated the peatland water table level (wet, intermediate and dry; on average the depth of the water table was 17.4, 21.2 and 25.3 cm respectively), and we used open‐top chambers (OTCs) to create warmer conditions (on average increase of 1.2°C in OTC plots compared to control plots). Peat drying through water table lowering at this local scale had a larger effect than OTC warming treatment per see on Sphagnum mosses and vascular plants. In particular, ericoid shrubs increased with a lower water table level, while Sphagnum decreased. Microclimatic measurements at the plot scale indicated that both water‐level and temperature, represented by heating degree days (HDDs), can have significant effects on the vegetation. In a large‐scale complementary vegetation gradient survey replicated in three peatlands positioned along a transitional oceanic–continental and temperate–boreal (subarctic) gradient (France–Poland–Western Siberia), an increase in ericoid shrubs was marked by an increase in phenols in peat pore water, resulting from higher phenol concentrations in vascular plant biomass. Our results suggest a shift in functioning from a mineral‐N‐driven to a fungi‐mediated organic‐N nutrient acquisition with shrub encroachment. Both ericoid shrub encroachment and higher mean annual temperature in the three sites triggered greater vascular plant biomass and consequently the dominance of decomposers (especially fungi), which led to a feeding community dominated by nematodes. This contributed to lower enzymatic multifunctionality. Our findings illustrate mechanisms by which plants influence ecosystem responses to climate change, ... |
author2 |
Agence Nationale de la Recherche |
format |
Article in Journal/Newspaper |
author |
Buttler, Alexandre Bragazza, Luca Laggoun‐Défarge, Fatima Gogo, Sebastien Toussaint, Marie‐Laure Lamentowicz, Mariusz Chojnicki, Bogdan H. Słowiński, Michał Słowińska, Sandra Zielińska, Małgorzata Reczuga, Monika Barabach, Jan Marcisz, Katarzyna Lamentowicz, Łukasz Harenda, Kamila Lapshina, Elena Gilbert, Daniel Schlaepfer, Rodolphe Jassey, Vincent E. J. |
spellingShingle |
Buttler, Alexandre Bragazza, Luca Laggoun‐Défarge, Fatima Gogo, Sebastien Toussaint, Marie‐Laure Lamentowicz, Mariusz Chojnicki, Bogdan H. Słowiński, Michał Słowińska, Sandra Zielińska, Małgorzata Reczuga, Monika Barabach, Jan Marcisz, Katarzyna Lamentowicz, Łukasz Harenda, Kamila Lapshina, Elena Gilbert, Daniel Schlaepfer, Rodolphe Jassey, Vincent E. J. Ericoid shrub encroachment shifts aboveground–belowground linkages in three peatlands across Europe and Western Siberia |
author_facet |
Buttler, Alexandre Bragazza, Luca Laggoun‐Défarge, Fatima Gogo, Sebastien Toussaint, Marie‐Laure Lamentowicz, Mariusz Chojnicki, Bogdan H. Słowiński, Michał Słowińska, Sandra Zielińska, Małgorzata Reczuga, Monika Barabach, Jan Marcisz, Katarzyna Lamentowicz, Łukasz Harenda, Kamila Lapshina, Elena Gilbert, Daniel Schlaepfer, Rodolphe Jassey, Vincent E. J. |
author_sort |
Buttler, Alexandre |
title |
Ericoid shrub encroachment shifts aboveground–belowground linkages in three peatlands across Europe and Western Siberia |
title_short |
Ericoid shrub encroachment shifts aboveground–belowground linkages in three peatlands across Europe and Western Siberia |
title_full |
Ericoid shrub encroachment shifts aboveground–belowground linkages in three peatlands across Europe and Western Siberia |
title_fullStr |
Ericoid shrub encroachment shifts aboveground–belowground linkages in three peatlands across Europe and Western Siberia |
title_full_unstemmed |
Ericoid shrub encroachment shifts aboveground–belowground linkages in three peatlands across Europe and Western Siberia |
title_sort |
ericoid shrub encroachment shifts aboveground–belowground linkages in three peatlands across europe and western siberia |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1111/gcb.16904 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16904 |
genre |
Subarctic Siberia |
genre_facet |
Subarctic Siberia |
op_source |
Global Change Biology volume 29, issue 23, page 6772-6793 ISSN 1354-1013 1365-2486 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1111/gcb.16904 |
container_title |
Global Change Biology |
container_volume |
29 |
container_issue |
23 |
container_start_page |
6772 |
op_container_end_page |
6793 |
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1810482423305076736 |