Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change
International audience In recent decades, climate change has been faster in various parts of the world. Within species, to counter rapid climatechanges shift of geographical area, individuals’ plastic responses or populations’ genetic adaptation might occur. The sub-Antarctic islands are subject to...
Published in: | Polar Biology |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Online Access: | https://hal.science/hal-03036374 https://hal.science/hal-03036374/document https://hal.science/hal-03036374/file/Marchand%20et%20al-2020-Morphological%20variability%20of%20cushion%20plant%20Lyallia%20kerguelensis%20%28Caryophyllales%29-corrected_manuscript_V2.pdf https://doi.org/10.1007/s00300-020-02768-2 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Cushion plant Kerguelen Islands Morphological variability Necrosis Photointerpretation Sub-Antarctic [SDE]Environmental Sciences [SDV]Life Sciences [q-bio] |
spellingShingle |
Cushion plant Kerguelen Islands Morphological variability Necrosis Photointerpretation Sub-Antarctic [SDE]Environmental Sciences [SDV]Life Sciences [q-bio] Marchand, Lorène Julia Tarayre, Michèle Dorey, Thomas Rantier, Yann Hennion, Françoise Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change |
topic_facet |
Cushion plant Kerguelen Islands Morphological variability Necrosis Photointerpretation Sub-Antarctic [SDE]Environmental Sciences [SDV]Life Sciences [q-bio] |
description |
International audience In recent decades, climate change has been faster in various parts of the world. Within species, to counter rapid climatechanges shift of geographical area, individuals’ plastic responses or populations’ genetic adaptation might occur. The sub-Antarctic islands are subject to one of the most rapid climate changes on earth, with already visible impacts on nativevegetation. Such might be the case of Lyallia kerguelensis a cushion plant strictly endemic to the Kerguelen Islands. In L.kerguelensis, necrotic parts were observed in cushions these last decades and possibly related to water stress. We analysedmorphological variability of L. kerguelensis, including necrosis extent, across 19 populations spanning a wide range ofenvironments across the Kerguelen Islands. Inter-population variations in the cushion surface area, shape and compactnesswere well explained by topography, degree of wind exposure, slope aspect, proportions of coarse sand and bare soil, andgeographical distance between populations. All these variables are related to wind intensity and water availability. Moreover,in cushions with less than 10% necrosis in surface area, necrosis extent was positively correlated to soil sodium. Sodiumavailability might reduce the plant’s capacity for osmotic adjustment in face of other abiotic stresses, such as water stress. Weconclude that cushion morphology may have the capacity to adjust to environmental variation, including aspects of climatechange, but that cushion necrosis may be accelerated in the driest and most saline environments. |
author2 |
Université de Rennes (UR) Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Centre National de la Recherche Scientifique (CNRS) Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Universität Zürich Zürich = University of Zurich (UZH) Centre National de la Recherche Scientifique, IRP grant “AntarctPlantAdapt” Project 1116, Institut Polaire Français Paul Emile Victor |
format |
Article in Journal/Newspaper |
author |
Marchand, Lorène Julia Tarayre, Michèle Dorey, Thomas Rantier, Yann Hennion, Françoise |
author_facet |
Marchand, Lorène Julia Tarayre, Michèle Dorey, Thomas Rantier, Yann Hennion, Françoise |
author_sort |
Marchand, Lorène Julia |
title |
Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change |
title_short |
Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change |
title_full |
Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change |
title_fullStr |
Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change |
title_full_unstemmed |
Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change |
title_sort |
morphological variability of cushion plant lyallia kerguelensis (caryophyllales) in relation to environmental conditions and geography in the kerguelen islands: implications for cushion necrosis and climate change |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03036374 https://hal.science/hal-03036374/document https://hal.science/hal-03036374/file/Marchand%20et%20al-2020-Morphological%20variability%20of%20cushion%20plant%20Lyallia%20kerguelensis%20%28Caryophyllales%29-corrected_manuscript_V2.pdf https://doi.org/10.1007/s00300-020-02768-2 |
geographic |
Antarctic Kerguelen Kerguelen Islands |
geographic_facet |
Antarctic Kerguelen Kerguelen Islands |
genre |
Antarc* Antarctic Kerguelen Islands Polar Biology |
genre_facet |
Antarc* Antarctic Kerguelen Islands Polar Biology |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-03036374 Polar Biology, 2021, 44 (1), pp.17-30. ⟨10.1007/s00300-020-02768-2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-020-02768-2 hal-03036374 https://hal.science/hal-03036374 https://hal.science/hal-03036374/document https://hal.science/hal-03036374/file/Marchand%20et%20al-2020-Morphological%20variability%20of%20cushion%20plant%20Lyallia%20kerguelensis%20%28Caryophyllales%29-corrected_manuscript_V2.pdf doi:10.1007/s00300-020-02768-2 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1007/s00300-020-02768-2 |
container_title |
Polar Biology |
container_volume |
44 |
container_issue |
1 |
container_start_page |
17 |
op_container_end_page |
30 |
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1790593728260341760 |
spelling |
ftinsu:oai:HAL:hal-03036374v1 2024-02-11T09:58:08+01:00 Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change Marchand, Lorène Julia Tarayre, Michèle Dorey, Thomas Rantier, Yann Hennion, Françoise Université de Rennes (UR) Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Centre National de la Recherche Scientifique (CNRS) Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Universität Zürich Zürich = University of Zurich (UZH) Centre National de la Recherche Scientifique, IRP grant “AntarctPlantAdapt” Project 1116, Institut Polaire Français Paul Emile Victor 2021-01 https://hal.science/hal-03036374 https://hal.science/hal-03036374/document https://hal.science/hal-03036374/file/Marchand%20et%20al-2020-Morphological%20variability%20of%20cushion%20plant%20Lyallia%20kerguelensis%20%28Caryophyllales%29-corrected_manuscript_V2.pdf https://doi.org/10.1007/s00300-020-02768-2 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-020-02768-2 hal-03036374 https://hal.science/hal-03036374 https://hal.science/hal-03036374/document https://hal.science/hal-03036374/file/Marchand%20et%20al-2020-Morphological%20variability%20of%20cushion%20plant%20Lyallia%20kerguelensis%20%28Caryophyllales%29-corrected_manuscript_V2.pdf doi:10.1007/s00300-020-02768-2 info:eu-repo/semantics/OpenAccess ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-03036374 Polar Biology, 2021, 44 (1), pp.17-30. ⟨10.1007/s00300-020-02768-2⟩ Cushion plant Kerguelen Islands Morphological variability Necrosis Photointerpretation Sub-Antarctic [SDE]Environmental Sciences [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2021 ftinsu https://doi.org/10.1007/s00300-020-02768-2 2024-01-24T17:32:44Z International audience In recent decades, climate change has been faster in various parts of the world. Within species, to counter rapid climatechanges shift of geographical area, individuals’ plastic responses or populations’ genetic adaptation might occur. The sub-Antarctic islands are subject to one of the most rapid climate changes on earth, with already visible impacts on nativevegetation. Such might be the case of Lyallia kerguelensis a cushion plant strictly endemic to the Kerguelen Islands. In L.kerguelensis, necrotic parts were observed in cushions these last decades and possibly related to water stress. We analysedmorphological variability of L. kerguelensis, including necrosis extent, across 19 populations spanning a wide range ofenvironments across the Kerguelen Islands. Inter-population variations in the cushion surface area, shape and compactnesswere well explained by topography, degree of wind exposure, slope aspect, proportions of coarse sand and bare soil, andgeographical distance between populations. All these variables are related to wind intensity and water availability. Moreover,in cushions with less than 10% necrosis in surface area, necrosis extent was positively correlated to soil sodium. Sodiumavailability might reduce the plant’s capacity for osmotic adjustment in face of other abiotic stresses, such as water stress. Weconclude that cushion morphology may have the capacity to adjust to environmental variation, including aspects of climatechange, but that cushion necrosis may be accelerated in the driest and most saline environments. Article in Journal/Newspaper Antarc* Antarctic Kerguelen Islands Polar Biology Institut national des sciences de l'Univers: HAL-INSU Antarctic Kerguelen Kerguelen Islands Polar Biology 44 1 17 30 |