Publication Details
Category Text Publication
Reference Category Journals
DOI 10.1029/2022WR034010
Licence creative commons licence
Title (Primary) Composition of photosynthetic gas bubbles from submerged macrophytes
Author Shikhani, M.; Reinschke, L.; Aurich, P.; Waldemer, C.; Koschorreck, M.; Boehrer, B.
Source Titel Water Resources Research
Year 2024
Department SEEFO
Volume 60
Issue 1
Page From e2022WR034010
Language englisch
Topic T5 Future Landscapes
Data and Software links https://doi.org/10.5281/zenodo.10185404
Supplements https://agupubs.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1029%2F2022WR034010&file=2022WR034010-sup-0001-Supporting+Information+SI-S01.pdf
Keywords ebullition; oxygen; bubble formation; bubble composition; dissolved gases
Abstract Dissolved oxygen plays a central role for all organisms dwelling in water. However, the flux of oxygen by ebullition has not received much attention in environmental science. For a better quantitative understanding of the oxygen flux due to ebullition, we conducted a series of laboratory experiments, where we forced macrophytes to produce photosynthetic gas bubbles. Raising the CO2 concentration in the water greatly increased bubble formation. Depth was varied to compare the results with theoretically predicted composition of photosynthetic bubbles forming at minimum required gas pressure. Oxygen concentrations lay between this theoretical line as lower boundary (ca. 21% O2 at 0.3 m depth and 45% of O2 at 4.5 m) and 45% of oxygen as the purely empirical upper limit for all depths. As a consequence, no bubble formation was observed at depths below 4.5 m.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=28660
Shikhani, M., Reinschke, L., Aurich, P., Waldemer, C., Koschorreck, M., Boehrer, B. (2024):
Composition of photosynthetic gas bubbles from submerged macrophytes
Water Resour. Res. 60 (1), e2022WR034010 10.1029/2022WR034010