Carbon balance modifications in Sphagnum-dominated peat mesocosms invaded by Molinia caerulea
International audience Peatlands are wetlands acting as carbon (C) sink at a global scale. Even if, it represents only 3% of the land area, these specific ecosystems have stored a third of the global soil C. Most peatlands (up to 80%) are located in the northern hemisphere and lie in cool temperate...
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HAL CCSD
2017
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Online Access: | https://insu.hal.science/insu-01664667 https://insu.hal.science/insu-01664667/document https://insu.hal.science/insu-01664667/file/Leroy_2017_WSPCC_ORAL.pdf |
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Open Polar |
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Université d'Orléans: HAL |
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ftunivorleans |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
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[SDU]Sciences of the Universe [physics] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Leroy, Fabien Gogo, Sébastien Guimbaud, Christophe Bernard-Jannin, Léonard Laggoun-Défarge, Fatima Carbon balance modifications in Sphagnum-dominated peat mesocosms invaded by Molinia caerulea |
topic_facet |
[SDU]Sciences of the Universe [physics] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Peatlands are wetlands acting as carbon (C) sink at a global scale. Even if, it represents only 3% of the land area, these specific ecosystems have stored a third of the global soil C. Most peatlands (up to 80%) are located in the northern hemisphere and lie in cool temperate zone in association with waterlogged, nutrient poor conditions and Sphagnum mosses, which limit the activity of the soil decomposers. As a result, in spite of the relative small net ecosystem production in peatlands, the imbalance between the primary production and the decomposition is enough to allow organic matter (OM) accumulation as peat (Bragazza et al., 2009). However, global change are expected to cause a plant community shift in peatlands with an increase of vascular plants (such as graminoids at the detriment of Sphagnum species (Dieleman et al., 2015). Vascular plants invasion in peatlands have mostly been studied through a change of CO2 and CH4 emissions with different plant community composition. In spite of observed C fluxes modification, the role of vascular plant invasion on the C sink balance in peatlands are still to be elucidated. The aim of this study was to investigate how an invading graminoid plants, Molinia caerulea, can affect the C balance of Sphagnum-dominated peatland. CO2 fluxes and CH4 emissions were regularly measured in peat mesocoms during fourteen months and related to biotic and abiotic factor to calculate the annual C budget with and without Molinia caerulea. Twelve peat mesocosms (depth and diameter: 30 cm) were collected in March 2015 in La Guette peatland (France). This is an acidic fen invaded by Molinia caerulea, a graminoid plant invading numerous peatlands. The mesocosms were buried outdoor and surrounded with a tarpaulin containing water from the peatland. Air and soil temperature at 5 and 20 cm depth were monitored in each mesocosm. The mesocosms were separated into 2 treatments with 6 containing only Sphagnum rubellum ('Sphagnum' mesocosms) and 6 containing Sphagnum ... |
author2 |
Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Bureau de Recherches Géologiques et Minières (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) PIVOTS ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010) |
format |
Conference Object |
author |
Leroy, Fabien Gogo, Sébastien Guimbaud, Christophe Bernard-Jannin, Léonard Laggoun-Défarge, Fatima |
author_facet |
Leroy, Fabien Gogo, Sébastien Guimbaud, Christophe Bernard-Jannin, Léonard Laggoun-Défarge, Fatima |
author_sort |
Leroy, Fabien |
title |
Carbon balance modifications in Sphagnum-dominated peat mesocosms invaded by Molinia caerulea |
title_short |
Carbon balance modifications in Sphagnum-dominated peat mesocosms invaded by Molinia caerulea |
title_full |
Carbon balance modifications in Sphagnum-dominated peat mesocosms invaded by Molinia caerulea |
title_fullStr |
Carbon balance modifications in Sphagnum-dominated peat mesocosms invaded by Molinia caerulea |
title_full_unstemmed |
Carbon balance modifications in Sphagnum-dominated peat mesocosms invaded by Molinia caerulea |
title_sort |
carbon balance modifications in sphagnum-dominated peat mesocosms invaded by molinia caerulea |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://insu.hal.science/insu-01664667 https://insu.hal.science/insu-01664667/document https://insu.hal.science/insu-01664667/file/Leroy_2017_WSPCC_ORAL.pdf |
op_coverage |
Khanty-Mansiysk , Russia |
genre |
khanty |
genre_facet |
khanty |
op_source |
5th International Field Symposium "West Siberian Peatlands and Carbon Cycle : Past and Present" and International Conferences "Carbon Balance Western Siberian Mires in the Context of Climate Change" https://insu.hal.science/insu-01664667 5th International Field Symposium "West Siberian Peatlands and Carbon Cycle : Past and Present" and International Conferences "Carbon Balance Western Siberian Mires in the Context of Climate Change", Jun 2017, Khanty-Mansiysk Russia |
op_relation |
insu-01664667 https://insu.hal.science/insu-01664667 https://insu.hal.science/insu-01664667/document https://insu.hal.science/insu-01664667/file/Leroy_2017_WSPCC_ORAL.pdf |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess |
_version_ |
1799483137034551296 |
spelling |
ftunivorleans:oai:HAL:insu-01664667v1 2024-05-19T07:43:25+00:00 Carbon balance modifications in Sphagnum-dominated peat mesocosms invaded by Molinia caerulea Leroy, Fabien Gogo, Sébastien Guimbaud, Christophe Bernard-Jannin, Léonard Laggoun-Défarge, Fatima Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Bureau de Recherches Géologiques et Minières (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) PIVOTS ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010) Khanty-Mansiysk , Russia 2017-06-19 https://insu.hal.science/insu-01664667 https://insu.hal.science/insu-01664667/document https://insu.hal.science/insu-01664667/file/Leroy_2017_WSPCC_ORAL.pdf en eng HAL CCSD insu-01664667 https://insu.hal.science/insu-01664667 https://insu.hal.science/insu-01664667/document https://insu.hal.science/insu-01664667/file/Leroy_2017_WSPCC_ORAL.pdf http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess 5th International Field Symposium "West Siberian Peatlands and Carbon Cycle : Past and Present" and International Conferences "Carbon Balance Western Siberian Mires in the Context of Climate Change" https://insu.hal.science/insu-01664667 5th International Field Symposium "West Siberian Peatlands and Carbon Cycle : Past and Present" and International Conferences "Carbon Balance Western Siberian Mires in the Context of Climate Change", Jun 2017, Khanty-Mansiysk Russia [SDU]Sciences of the Universe [physics] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/conferenceObject Conference papers 2017 ftunivorleans 2024-05-01T23:59:32Z International audience Peatlands are wetlands acting as carbon (C) sink at a global scale. Even if, it represents only 3% of the land area, these specific ecosystems have stored a third of the global soil C. Most peatlands (up to 80%) are located in the northern hemisphere and lie in cool temperate zone in association with waterlogged, nutrient poor conditions and Sphagnum mosses, which limit the activity of the soil decomposers. As a result, in spite of the relative small net ecosystem production in peatlands, the imbalance between the primary production and the decomposition is enough to allow organic matter (OM) accumulation as peat (Bragazza et al., 2009). However, global change are expected to cause a plant community shift in peatlands with an increase of vascular plants (such as graminoids at the detriment of Sphagnum species (Dieleman et al., 2015). Vascular plants invasion in peatlands have mostly been studied through a change of CO2 and CH4 emissions with different plant community composition. In spite of observed C fluxes modification, the role of vascular plant invasion on the C sink balance in peatlands are still to be elucidated. The aim of this study was to investigate how an invading graminoid plants, Molinia caerulea, can affect the C balance of Sphagnum-dominated peatland. CO2 fluxes and CH4 emissions were regularly measured in peat mesocoms during fourteen months and related to biotic and abiotic factor to calculate the annual C budget with and without Molinia caerulea. Twelve peat mesocosms (depth and diameter: 30 cm) were collected in March 2015 in La Guette peatland (France). This is an acidic fen invaded by Molinia caerulea, a graminoid plant invading numerous peatlands. The mesocosms were buried outdoor and surrounded with a tarpaulin containing water from the peatland. Air and soil temperature at 5 and 20 cm depth were monitored in each mesocosm. The mesocosms were separated into 2 treatments with 6 containing only Sphagnum rubellum ('Sphagnum' mesocosms) and 6 containing Sphagnum ... Conference Object khanty Université d'Orléans: HAL |