Dynamics of vegetated landscapes since the end of the Little Ice Age: Analysis of plant colonization in proglacial areas.
As a result of global climatic changes that followed the Little Ice Age, most Arctic glaciers are retreating and more areas are becoming available for plant colonization. Such a process can be observed on Svalbard in the frontal areas of five glaciers, located on the north western coastline and in t...
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Format: | Doctoral or Postdoctoral Thesis |
Language: | French |
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2005
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Online Access: | https://theses.hal.science/tel-00011178 https://theses.hal.science/tel-00011178/document https://theses.hal.science/tel-00011178/file/Moreau_these.pdf |
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ftclermontuniv:oai:HAL:tel-00011178v1 2023-05-15T15:17:35+02:00 Dynamics of vegetated landscapes since the end of the Little Ice Age: Analysis of plant colonization in proglacial areas. Dynamique des paysages végétaux depuis la fin du Petit Âge Glaciaire au Spitsberg (79°N). Analyse intégrée de la reconquête végétale des marges proglaciaires. Moreau, Myrtille Laboratoire de Géographie Physique et Environnementale (GEOLAB) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM) Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) Université Blaise Pascal - Clermont-Ferrand II Marie-Françoise André(m-francoise.andre@univ-bpclermont.fr) 2005-12-07 https://theses.hal.science/tel-00011178 https://theses.hal.science/tel-00011178/document https://theses.hal.science/tel-00011178/file/Moreau_these.pdf fr fre HAL CCSD tel-00011178 https://theses.hal.science/tel-00011178 https://theses.hal.science/tel-00011178/document https://theses.hal.science/tel-00011178/file/Moreau_these.pdf info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-00011178 Géographie. Université Blaise Pascal - Clermont-Ferrand II, 2005. Français. ⟨NNT : ⟩ proglacial area plant colonization GIS DEM vegetation sampling Spitsbergen marge proglaciaire colonisation végétale stratégies d'échantillonnage SIG MNT Spitsberg [SHS.GEO]Humanities and Social Sciences/Geography info:eu-repo/semantics/doctoralThesis Theses 2005 ftclermontuniv 2023-03-29T00:10:24Z As a result of global climatic changes that followed the Little Ice Age, most Arctic glaciers are retreating and more areas are becoming available for plant colonization. Such a process can be observed on Svalbard in the frontal areas of five glaciers, located on the north western coastline and in the central part of the island. To determine the relationship between retreating glacial fronts and plant colonization processes, systematic releves are normally utilized. The resulting data usually indicate that time since glacial retreat is the primarily determining of vegetation evolution in terms of physiognomy and floristic composition. Although the floristic sequence is the same from the early pioneer stages to later mature ones, we found that this process is neither homogeneous nor explicitly time dependent. For example, environmental position, such as changes in micro-topographic relief, may also be an important factor in determining variation in the colonization process and can interfere with the normal time dependent colonization process. Within one proglacial area we observed floristic variation between different micro-topographic environments utilizing releves and a digital elevation model with a 2 m spatial resolution. This allowed us to examine floristic changes along both temporal (time from glacial retreat) and spatial (micro-topographic relief) scales. Using a probabilistic model, we were able to map the temporal and spatial effects on plant colonization in these glacial forelands and produce new landscape nomenclature to describe them. Sous l'effet du réchauffement climatique postérieur au Petit Âge Glaciaire, la fonte des glaciers arctiques a libéré de nouveaux espaces conquis ensuite par la végétation. Le phénomène est bien marqué au Spitsberg où la présente étude est conduite. Celle-ci concerne les marges de cinq glaciers, localisées sur la façade nord occidentale et dans le centre de l'île. Une première analyse a été conduite par relevés floristiques systématiques permettant de mettre en ... Doctoral or Postdoctoral Thesis Arctic Arctique* Spitsberg Svalbard Spitsbergen HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) Arctic Svalbard |
institution |
Open Polar |
collection |
HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) |
op_collection_id |
ftclermontuniv |
language |
French |
topic |
proglacial area plant colonization GIS DEM vegetation sampling Spitsbergen marge proglaciaire colonisation végétale stratégies d'échantillonnage SIG MNT Spitsberg [SHS.GEO]Humanities and Social Sciences/Geography |
spellingShingle |
proglacial area plant colonization GIS DEM vegetation sampling Spitsbergen marge proglaciaire colonisation végétale stratégies d'échantillonnage SIG MNT Spitsberg [SHS.GEO]Humanities and Social Sciences/Geography Moreau, Myrtille Dynamics of vegetated landscapes since the end of the Little Ice Age: Analysis of plant colonization in proglacial areas. |
topic_facet |
proglacial area plant colonization GIS DEM vegetation sampling Spitsbergen marge proglaciaire colonisation végétale stratégies d'échantillonnage SIG MNT Spitsberg [SHS.GEO]Humanities and Social Sciences/Geography |
description |
As a result of global climatic changes that followed the Little Ice Age, most Arctic glaciers are retreating and more areas are becoming available for plant colonization. Such a process can be observed on Svalbard in the frontal areas of five glaciers, located on the north western coastline and in the central part of the island. To determine the relationship between retreating glacial fronts and plant colonization processes, systematic releves are normally utilized. The resulting data usually indicate that time since glacial retreat is the primarily determining of vegetation evolution in terms of physiognomy and floristic composition. Although the floristic sequence is the same from the early pioneer stages to later mature ones, we found that this process is neither homogeneous nor explicitly time dependent. For example, environmental position, such as changes in micro-topographic relief, may also be an important factor in determining variation in the colonization process and can interfere with the normal time dependent colonization process. Within one proglacial area we observed floristic variation between different micro-topographic environments utilizing releves and a digital elevation model with a 2 m spatial resolution. This allowed us to examine floristic changes along both temporal (time from glacial retreat) and spatial (micro-topographic relief) scales. Using a probabilistic model, we were able to map the temporal and spatial effects on plant colonization in these glacial forelands and produce new landscape nomenclature to describe them. Sous l'effet du réchauffement climatique postérieur au Petit Âge Glaciaire, la fonte des glaciers arctiques a libéré de nouveaux espaces conquis ensuite par la végétation. Le phénomène est bien marqué au Spitsberg où la présente étude est conduite. Celle-ci concerne les marges de cinq glaciers, localisées sur la façade nord occidentale et dans le centre de l'île. Une première analyse a été conduite par relevés floristiques systématiques permettant de mettre en ... |
author2 |
Laboratoire de Géographie Physique et Environnementale (GEOLAB) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM) Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) Université Blaise Pascal - Clermont-Ferrand II Marie-Françoise André(m-francoise.andre@univ-bpclermont.fr) |
format |
Doctoral or Postdoctoral Thesis |
author |
Moreau, Myrtille |
author_facet |
Moreau, Myrtille |
author_sort |
Moreau, Myrtille |
title |
Dynamics of vegetated landscapes since the end of the Little Ice Age: Analysis of plant colonization in proglacial areas. |
title_short |
Dynamics of vegetated landscapes since the end of the Little Ice Age: Analysis of plant colonization in proglacial areas. |
title_full |
Dynamics of vegetated landscapes since the end of the Little Ice Age: Analysis of plant colonization in proglacial areas. |
title_fullStr |
Dynamics of vegetated landscapes since the end of the Little Ice Age: Analysis of plant colonization in proglacial areas. |
title_full_unstemmed |
Dynamics of vegetated landscapes since the end of the Little Ice Age: Analysis of plant colonization in proglacial areas. |
title_sort |
dynamics of vegetated landscapes since the end of the little ice age: analysis of plant colonization in proglacial areas. |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://theses.hal.science/tel-00011178 https://theses.hal.science/tel-00011178/document https://theses.hal.science/tel-00011178/file/Moreau_these.pdf |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctique* Spitsberg Svalbard Spitsbergen |
genre_facet |
Arctic Arctique* Spitsberg Svalbard Spitsbergen |
op_source |
https://theses.hal.science/tel-00011178 Géographie. Université Blaise Pascal - Clermont-Ferrand II, 2005. Français. ⟨NNT : ⟩ |
op_relation |
tel-00011178 https://theses.hal.science/tel-00011178 https://theses.hal.science/tel-00011178/document https://theses.hal.science/tel-00011178/file/Moreau_these.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766347829874262016 |