Sedimentary DNA-based reconstruction of cyanobacterial communities from Lake Tiefer See, NE Germany, for the last 11,000 years

Dissertation, Universität Potsdam, 2022

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Bibliographische Detailangaben
1. Verfasser: Nwosu, Ebuka Canisius (VerfasserIn)
Körperschaft: Universität Potsdam (Grad-verleihende Institution)
Weitere Verfasser: Herzschuh, Ulrike (AkademischeR BetreuerIn), Epp, Laura (AkademischeR BetreuerIn), Liebner, Susanne (AkademischeR BetreuerIn), Dittmann, Elke (AkademischeR BetreuerIn)
Format: UnknownFormat
Sprache:eng
Veröffentlicht: Potsdam 2022
Schlagworte:
Hochschulschrift > Cyanobakterien > Sedimentanalyse > Umweltveränderung
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Beschreibung
Zusammenfassung:Dissertation, Universität Potsdam, 2022
Climate change and human-driven eutrophication promote the spread of harmful cyanobacteria blooms in lakes worldwide, which affects water quality and impairs the aquatic food chain. In recent times, sedimentary ancient DNA-based (sedaDNA) studies were used to probe how centuries of climate and environmental changes have affected cyanobacterial assemblages in temperate lakes. However, there is a lack of information on the consistency between sediment-deposited cyanobacteria communities versus those of the water column, and on the individual role of natural climatic changes versus human pressure on cyanobacteria community dynamics over multi-millennia time scales. Therefore, this thesis uses sedimentary ancient DNA of Lake Tiefer See in northeastern Germany to trace the deposition of cyanobacteria along the water column into the sediment, and to reconstruct cyanobacteria communities spanning the last 11,000 years using a set of molecular techniques including quantitative PCR, biomarkers, metabarcoding, and metagenome sequence analyses. ...
Beschreibung:xxvi, 214 Seiten
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