Climate and climate change

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Table of contents

Plant adaptation: What does theory say?
The adaptive capacity concept
Extended phenotype and adaptive capacity
Species isolation and endemicity: consequences for adaptation
Life in harsh cold environments
Rapid climate change and consequences for plant species
The Kerguelen Islands environment
Geographical location
Abiotic and biotic characteristics
Climate and climate change
Lyallia kerguelensis (Montiaceae), a long-lived cushion plant species endemic from the Kerguelen Islands and affected by necrosis
Biology
Ecology
Ecophysiology
Aims and hypotheses of the PhD
Organisation of the thesis
References
PART I: Morphological variability and gene expression in Lyallia kerguelensis in contrasting environments
Chapter 1: Morphological variability of Lyallia kerguelensis in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change
Abstract
Introduction
Materials and methods
Results
Discussion
Conclusions
References
Online Resource
Chapter 2: Differential gene expression of L. kerguelensis in contrasted environments: implications for biotic and abiotic stresses
Introduction
Material and methods
Results
Discussion
Conclusion and perspectives
References
Supplementary material
Supplementary tables and figures
PART II: Soil microbial diversity and composition and its relation with rhizomicrobiome diversity and composition and plant vigour in contrasted environments
Chapter 3: Fellfields of the Kerguelen Islands harbour specific soil microbiome and rhizomicrobiomes of a long-lived endemic cushion plant facing necrosis
Abstract
Introduction
Material and methods
Results
Discussion
Conclusion
References
Supplementary data
PART III : Temporality of L. kerguelensis cushions’ morphological change and their possible longevity in relation with abiotic and climatic factors in contrasted environments
Chapter 4: Plant-climate relations and resilience to change: insights from a long-lived sub-Antarctic cushion plant (Lyallia kerguelensis)
Abstract
Introduction
Materials and methods
Results
Discussion
Conclusion
References
Supplementary data
Chapter 5: Growth and age variability in contrasted environments and architectural traits allometry in Lyallia kerguelensis Hook. f. (Montiaceae)
Abstract
Introduction
Material and Methods
Results
Discussion
Conclusion
References
Supplementary data
General discussion
Pool of variability of L. kerguelensis
Towards an estimation of the adaptive capacity of L. kerguelensis
Inter-population or region variability
Inter-individual variability
Long life-span and regeneration
A scenario under strong climate change
General conclusion
Perspectives of the thesis work
Towards a better understanding of the cushion entity
Shift of fellfield functioning with L. kerguelensis as a model plant
References
Annex 1: Hydric potential of Lyallia kerguelensis
Context
Materials and Methods
Results and Discussion
References
Annex 2: Germination experiments
Context
Material and methods
Results and discussion
Conclusion
References
Annex 3: Scientific outreach
PhD Publications
Other Publications
Communications
Scientific vulgarisation
Teaching experiences
Classes followed during the PhD