رسالة جامعية
Adaptation in an unsteady world - community adaptation and biodiversity-ecosystem functioning relationships, spatial heterogeneity and the evolution of stress tolerance, pulsed migration patterns and local adaptation ; Adaptation dans un monde en mouvement - adaptation des communautés et relations biodiversité-fonctionnement des écosystèmes, hétérogénéité spatiale et évolution de la tolérance au stress, migration pulsée et adaptation locale
| العنوان: | Adaptation in an unsteady world - community adaptation and biodiversity-ecosystem functioning relationships, spatial heterogeneity and the evolution of stress tolerance, pulsed migration patterns and local adaptation ; Adaptation dans un monde en mouvement - adaptation des communautés et relations biodiversité-fonctionnement des écosystèmes, hétérogénéité spatiale et évolution de la tolérance au stress, migration pulsée et adaptation locale |
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| المؤلفون: | Aubree, Flora |
| المساهمون: | Institut Sophia Agrobiotech (ISA), Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Côte d'Azur (UniCA), Université Côte d'Azur, Vincent Calcagno |
| المصدر: | https://theses.hal.science/tel-03564467Test ; Populations and Evolution [q-bio.PE]. Université Côte d'Azur, 2021. English. ⟨NNT : 2021COAZ6023⟩. |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2021 |
| المجموعة: | HAL Université Côte d'Azur |
| مصطلحات موضوعية: | Adaptive dynamics, Eco-evolutionary dynamics, Species interactions, Population genetics, Temporally variable migration, Gene flow, Local adaptation, Stochastic simulations, Dynamiques adaptatives, Dynamiques éco-évolutives, Interactions entre espèces, Génétique des populations, Migration variable dans le temps, Flux génétique, Adaptation locale, Simulations stochastiques, [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE], [SDV.EE]Life Sciences [q-bio]/Ecology, environment, [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
| الوصف: | The world is changing at an unprecedented rate in many interconnected aspects, and ecosystems are primarily concerned. The current shift in environmental conditions is accompanied by an increase in the temporal variability of environmental processes, which is also driven by anthropogenic activities. This work is part of the effort to understand how variability in key environmental processes impacts ecosystem composition and ecological and evolutionary functioning at different scales. The focus is made in particular on the interplay between such variability and the process of adaptation, which is a key aspect of ecosystem dynamics. Adaptation is integral to the functioning of ecosystems, yet it is still relatively little considered. In this thesis, three biological scales are considered – the scale of the community, the scale of the species, and the scale of populations. A theoretical modeling approach is used to introduce some aspects of variability and investigate how ecological and evolutionary dynamics are impacted.At the community scale, the impact that changes in the species co-adaptation level may have on some biodiversity-ecosystem functioning (BEF) relationships (diversity-productivity, diversity-stability and diversity-response to invasion relationships) is questioned. Random and co-adapted communities are compared using adaptive dynamics methods. Results show that species co-adaptation impacts most BEF relationships, sometimes inverting the slope of the relationship. At the species scale, the evolution of stress tolerance under a tolerance-fecundity trade-off model is explored using adaptive dynamics as well. The evolutionary outcomes are determined under different trade-offs and different stress distributions. The most critical parameters in determining the evolutionary outcomes (ESS trait value, branching) are highlighted, and they evidence that stress level heterogeneity is more critical than average stress level. At the population scale, gene flow between sub-populations of the same species is an ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | English |
| العلاقة: | NNT: 2021COAZ6023; tel-03564467; https://theses.hal.science/tel-03564467Test; https://theses.hal.science/tel-03564467/documentTest; https://theses.hal.science/tel-03564467/file/2021COAZ6023.pdfTest |
| الإتاحة: | https://theses.hal.science/tel-03564467Test https://theses.hal.science/tel-03564467/documentTest https://theses.hal.science/tel-03564467/file/2021COAZ6023.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.32448333 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |