Remote sensing of vegetation cover change in islands of the Kerguelen archipelago
International audience The plant communities in the Iles Kerguelen (South Indian Ocean) have been extensively modified by human activities, particularly through the deliberate release of rabbits, and the intentional or accidental introduction of several plant species. During the 1990 and 2000s, a de...
Published in: | Polar Biology |
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Main Authors: | , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2011
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Online Access: | https://hal.science/hal-00666745 https://doi.org/10.1007/s00300-011-1069-z |
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ftinsu:oai:HAL:hal-00666745v1 |
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openpolar |
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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 |
Remote sensing Climate change Vegetation cover Vegetation index Sub-Antarctic islands [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes [SHS.GEO]Humanities and Social Sciences/Geography |
spellingShingle |
Remote sensing Climate change Vegetation cover Vegetation index Sub-Antarctic islands [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes [SHS.GEO]Humanities and Social Sciences/Geography Robin, Marc Chapuis, Jean-Louis Lebouvier, Marc Remote sensing of vegetation cover change in islands of the Kerguelen archipelago |
topic_facet |
Remote sensing Climate change Vegetation cover Vegetation index Sub-Antarctic islands [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes [SHS.GEO]Humanities and Social Sciences/Geography |
description |
International audience The plant communities in the Iles Kerguelen (South Indian Ocean) have been extensively modified by human activities, particularly through the deliberate release of rabbits, and the intentional or accidental introduction of several plant species. During the 1990 and 2000s, a decrease in precipitation resulted in a drastic reduction of some native plant species and in the increase in alien taxa. To monitor at a wide spatial scale the rapid changes of vegetation cover induced by summer droughts, we developed a method combining field data and satellite image analysis. A long-term field monitoring of plant communities was initiated on five small islands in 1992, and annually continued for over 15 years on a total of 161 line transects. Among these islands, the rabbit--which was the only introduced herbivore--was eradicated on three, remained on one control island, and had never been present on a second control island. We computed a linear model to link remote sensored vegetation indexes to plant cover deduced from line transects in numerous habitat types. After testing 14 vegetation indexes, we used a model based on the normalized difference vegetation index to precisely map the vegetation cover at several dates. A map of differences and spatial statistics indicated that vegetation cover, as a whole, decreased over the 15-year period. This study provides a reliable tool for long-term monitoring of the dynamics of plant cover in relation to climate change on the Iles Kerguelen. |
author2 |
Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-École Pratique des Hautes Études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) Université de Nantes (UN)-Université de Nantes (UN) Centre d'Ecologie et des Sciences de la COnservation (CESCO) Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) 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) |
format |
Article in Journal/Newspaper |
author |
Robin, Marc Chapuis, Jean-Louis Lebouvier, Marc |
author_facet |
Robin, Marc Chapuis, Jean-Louis Lebouvier, Marc |
author_sort |
Robin, Marc |
title |
Remote sensing of vegetation cover change in islands of the Kerguelen archipelago |
title_short |
Remote sensing of vegetation cover change in islands of the Kerguelen archipelago |
title_full |
Remote sensing of vegetation cover change in islands of the Kerguelen archipelago |
title_fullStr |
Remote sensing of vegetation cover change in islands of the Kerguelen archipelago |
title_full_unstemmed |
Remote sensing of vegetation cover change in islands of the Kerguelen archipelago |
title_sort |
remote sensing of vegetation cover change in islands of the kerguelen archipelago |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00666745 https://doi.org/10.1007/s00300-011-1069-z |
geographic |
Antarctic Indian Kerguelen |
geographic_facet |
Antarctic Indian Kerguelen |
genre |
Antarc* Antarctic Polar Biology |
genre_facet |
Antarc* Antarctic Polar Biology |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00666745 Polar Biology, 2011, 34, pp.1689-1700. ⟨10.1007/s00300-011-1069-z⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-011-1069-z hal-00666745 https://hal.science/hal-00666745 doi:10.1007/s00300-011-1069-z |
op_doi |
https://doi.org/10.1007/s00300-011-1069-z |
container_title |
Polar Biology |
container_volume |
34 |
container_issue |
11 |
container_start_page |
1689 |
op_container_end_page |
1700 |
_version_ |
1790594269082288128 |
spelling |
ftinsu:oai:HAL:hal-00666745v1 2024-02-11T09:58:34+01:00 Remote sensing of vegetation cover change in islands of the Kerguelen archipelago Robin, Marc Chapuis, Jean-Louis Lebouvier, Marc Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-École Pratique des Hautes Études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) Université de Nantes (UN)-Université de Nantes (UN) Centre d'Ecologie et des Sciences de la COnservation (CESCO) Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) 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) 2011-08-11 https://hal.science/hal-00666745 https://doi.org/10.1007/s00300-011-1069-z en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-011-1069-z hal-00666745 https://hal.science/hal-00666745 doi:10.1007/s00300-011-1069-z ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00666745 Polar Biology, 2011, 34, pp.1689-1700. ⟨10.1007/s00300-011-1069-z⟩ Remote sensing Climate change Vegetation cover Vegetation index Sub-Antarctic islands [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes [SHS.GEO]Humanities and Social Sciences/Geography info:eu-repo/semantics/article Journal articles 2011 ftinsu https://doi.org/10.1007/s00300-011-1069-z 2024-01-24T17:23:47Z International audience The plant communities in the Iles Kerguelen (South Indian Ocean) have been extensively modified by human activities, particularly through the deliberate release of rabbits, and the intentional or accidental introduction of several plant species. During the 1990 and 2000s, a decrease in precipitation resulted in a drastic reduction of some native plant species and in the increase in alien taxa. To monitor at a wide spatial scale the rapid changes of vegetation cover induced by summer droughts, we developed a method combining field data and satellite image analysis. A long-term field monitoring of plant communities was initiated on five small islands in 1992, and annually continued for over 15 years on a total of 161 line transects. Among these islands, the rabbit--which was the only introduced herbivore--was eradicated on three, remained on one control island, and had never been present on a second control island. We computed a linear model to link remote sensored vegetation indexes to plant cover deduced from line transects in numerous habitat types. After testing 14 vegetation indexes, we used a model based on the normalized difference vegetation index to precisely map the vegetation cover at several dates. A map of differences and spatial statistics indicated that vegetation cover, as a whole, decreased over the 15-year period. This study provides a reliable tool for long-term monitoring of the dynamics of plant cover in relation to climate change on the Iles Kerguelen. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Institut national des sciences de l'Univers: HAL-INSU Antarctic Indian Kerguelen Polar Biology 34 11 1689 1700 |