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Your search keyword '"Tõnno, Ilmar"' showing total 5 results
Start Over Author "Tõnno, Ilmar" Topic lake sediments
5 results on '"Tõnno, Ilmar"'

1. Phosphorus in Estonian soils, surface waters and lake sediments : [presentation]

Author

Nõges, Peeter, Kisand, Anu, Kull, Anne, Ott, Ingmar, Tammeorg, Olga, Tõnno, Ilmar, and Vilbaste, Sirje

Subjects
Estonia, presentations, lake sediments, surface water, phosphorus, soils
Abstract

Presentation at the 11th International Shallow Lakes Conference, Estonia 11.-16.06.2023. We acknowledge the Estonian Research Council grants PRG709 and PRG1167, also European Union's Horizon 2020 research and innovation programme (project TREICLAKE) under grant agreement No 951963 for providing financial support for the project. We acknowledge the Estonian Research Council grants PRG709 and PRG1167, also European Union's Horizon 2020 research and innovation programme (project TREICLAKE) under grant agreement No 951963 for providing financial support for the project.

Published
2023

5. Towards understanding the abundance of non-pollen palynomorphs: A comparison of fossil algae, algal pigments and sedaDNA from temperate lake sediments.

Author

Stivrins, Normunds, Soininen, Janne, Tõnno, Ilmar, Freiberg, Rene, Veski, Siim, and Kisand, Veljo

Subjects
*ALGAL blooms, *PHYTOPLANKTON, *GREEN algae, *LAKE sediments, *MICROORGANISMS
Abstract

Given the increased interest in non-pollen palynomorphs (microscopic objects other than pollen identified from pollen slides) in palaeoecological studies, it is necessary to seek a deeper understanding of the reliability of these results. We combined quantitative information of algal pigments and sedimentary ancient DNA ( seda DNA) of phylotaxonomical resolution to validate the richness and abundance of fossil algae in the sediment of a small temperate lake. For the first time, fossil and seda DNA algae data were combined in a composite data-set and used to reconstruct algae turnover rates over the last 14,500 years. This comparison serves as both an example of how fossil algae can be used to answer various research questions and as a method of revealing to what extent we can rely on palaeoecological interpretations based solely on the fossil algae record from pollen slides. [ABSTRACT FROM AUTHOR]

Published
2018
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