Experiment design and bacterial abundance control extracellular  H<sub>2</sub>O<sub>2</sub> concentrations during four series of mesocosm experiments

Hopwood, Mark J.; Sanchez, Nicolas; Polyviou, Despo; Leiknes, Øystein; Gallego-Urrea, Julián Alberto; Achterberg, Eric P.; Ardelan, Murat V.; Aristegui, Javier; Bach, Lennart; Besiktepe, Sengul; Heriot, Yohann; Kalantzi, Ioanna; Terbıyık Kurt, Tuba; Santi, Ioulia; Tsagaraki, Tatiana M.; Turner, David

doi:https://doi.org/10.5194/bg-17-1309-2020

Articles | Volume 17, issue 5

https://doi.org/10.5194/bg-17-1309-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-17-1309-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 5

Research article

|

16 Mar 2020

Research article |

| 16 Mar 2020

Experiment design and bacterial abundance control extracellular H₂O₂ concentrations during four series of mesocosm experiments

Mark J. Hopwood, Nicolas Sanchez, Despo Polyviou, Øystein Leiknes, Julián Alberto Gallego-Urrea, Eric P. Achterberg, Murat V. Ardelan, Javier Aristegui, Lennart Bach, Sengul Besiktepe, Yohann Heriot, Ioanna Kalantzi, Tuba Terbıyık Kurt, Ioulia Santi, Tatiana M. Tsagaraki, and David Turner

Supplement

https://doi.org/10.5194/bg-17-1309-2020-supplement

Data sets

Response of the microbial food web to gradients of organic matter and grazing pressure and multi-stressor effect in incubation experiments in three different marine ecosystems: Patagonia, Arctic and Mediterranean Nicolas Sanchez, Øystein Leiknes, Tatiana M. Tsagaraki, Mark Hopwood, Julian A. Gallego-Urrea, Mathew Kuttivadakkethil Avarachen, L. Antonio Cuevas, Janset Kankus, Andrew L. King, Emanuele Roberto Reggiani, Gunnar Bratbak, Aud Larsen, Ruth-Anne Sandaa, Jorun K. Egge, David Turner, Sengul Besiktepe, Kemal Can Bizsel, Nihayet Bizsel, Jose Luis Iriarte, Humberto González, Rodrigo Torres, Richard G. J. Bellerby, Tron Frede Thingstad, Linn Hoffmann, Eric Pieter Achterberg, Olav Vadstein, Yngvar Olsen, and Murat V. Ardelan https://doi.org/10.1594/PANGAEA.911130

Short summary

Hydrogen peroxide, H₂O₂, is formed naturally in sunlight-exposed water by photochemistry. At high concentrations it is undesirable to biological cells because it is a stressor. Here, across a range of incubation experiments in diverse marine environments (Gran Canaria, the Mediterranean, Patagonia and Svalbard), we determine that two factors consistently affect the H₂O₂ concentrations irrespective of geographical location: bacteria abundance and experiment design.

Experiment design and bacterial abundance control extracellular H2O2 concentrations during four series of mesocosm experiments

Supplement

Data sets

Experiment design and bacterial abundance control extracellular H₂O₂ concentrations during four series of mesocosm experiments