Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics
Arctic phytoplankton is the base of the foodweb in the most rapidly changing region on the planet. Within this thesis I show that Arctic coastal diatom communities can sustain stable productivity under future climate scenarios by several mechanisms: though large phenotypic plasticity, sorting betwee...
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ftawi:oai:epic.awi.de:49813 2024-09-15T17:50:37+00:00 Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics Wolf, Klara 2019-03 application/pdf https://epic.awi.de/id/eprint/49813/ https://epic.awi.de/id/eprint/49813/1/PhDThesis_KWolf_March19_printA.pdf https://elib.suub.uni-bremen.de/edocs/00107155-1.pdf https://hdl.handle.net/10013/epic.1e8d02cb-ef51-4301-8f6a-22a36ef5ec62 unknown https://epic.awi.de/id/eprint/49813/1/PhDThesis_KWolf_March19_printA.pdf Wolf, K. (2019) Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics , PhD thesis, University of Bremen. hdl:10013/epic.1e8d02cb-ef51-4301-8f6a-22a36ef5ec62 EPIC3187 p. Thesis notRev 2019 ftawi 2024-06-24T04:22:11Z Arctic phytoplankton is the base of the foodweb in the most rapidly changing region on the planet. Within this thesis I show that Arctic coastal diatom communities can sustain stable productivity under future climate scenarios by several mechanisms: though large phenotypic plasticity, sorting between highly diverse genotypes and species shifts. The specific focus of this work lies on the role and functioning of intraspecific selection and population dynamics of the diatom Thalassiosira hyalina. Through application of new population genetic methodologies, I was able to resolve detailed selection dynamics in simplified diatom populations and found that their outcomes are not predictable from responses recorded in single-strain cultures, hinting towards interactions between conspecifics. Furthermore, my experiments and field studies on natural populations suggest that dynamics within populations are likely driven by more complex processes than clonal dominance. Forecasts on the future functioning of phytoplankton populations are therefore bound to include intraspecific diversity and evolutionary adaptation as crucial processes. Thesis Arctic Climate change Phytoplankton Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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description |
Arctic phytoplankton is the base of the foodweb in the most rapidly changing region on the planet. Within this thesis I show that Arctic coastal diatom communities can sustain stable productivity under future climate scenarios by several mechanisms: though large phenotypic plasticity, sorting between highly diverse genotypes and species shifts. The specific focus of this work lies on the role and functioning of intraspecific selection and population dynamics of the diatom Thalassiosira hyalina. Through application of new population genetic methodologies, I was able to resolve detailed selection dynamics in simplified diatom populations and found that their outcomes are not predictable from responses recorded in single-strain cultures, hinting towards interactions between conspecifics. Furthermore, my experiments and field studies on natural populations suggest that dynamics within populations are likely driven by more complex processes than clonal dominance. Forecasts on the future functioning of phytoplankton populations are therefore bound to include intraspecific diversity and evolutionary adaptation as crucial processes. |
format |
Thesis |
author |
Wolf, Klara |
spellingShingle |
Wolf, Klara Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics |
author_facet |
Wolf, Klara |
author_sort |
Wolf, Klara |
title |
Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics |
title_short |
Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics |
title_full |
Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics |
title_fullStr |
Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics |
title_full_unstemmed |
Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics |
title_sort |
adaptive potential of the arctic diatom thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics |
publishDate |
2019 |
url |
https://epic.awi.de/id/eprint/49813/ https://epic.awi.de/id/eprint/49813/1/PhDThesis_KWolf_March19_printA.pdf https://elib.suub.uni-bremen.de/edocs/00107155-1.pdf https://hdl.handle.net/10013/epic.1e8d02cb-ef51-4301-8f6a-22a36ef5ec62 |
genre |
Arctic Climate change Phytoplankton |
genre_facet |
Arctic Climate change Phytoplankton |
op_source |
EPIC3187 p. |
op_relation |
https://epic.awi.de/id/eprint/49813/1/PhDThesis_KWolf_March19_printA.pdf Wolf, K. (2019) Adaptive potential of the Arctic diatom Thalassiosira hyalina to climate change: intraspecific diversity, plasticity and population dynamics , PhD thesis, University of Bremen. hdl:10013/epic.1e8d02cb-ef51-4301-8f6a-22a36ef5ec62 |
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1810292424026619904 |