Aquatic respiration rate measurements at low oxygen concentrations

Citations of this article
Mendeley users who have this article in their library.


Despite its huge ecological importance, microbial oxygen respiration in pelagic waters is little studied, primarily due to methodological difficulties. Respiration measurements are challenging because of the required high resolution of oxygen concentration measurements. Recent improvements in oxygen sensing techniques bear great potential to overcome these limitations. Here we compare 3 different methods to measure oxygen consumption rates at low oxygen concentrations, utilizing amperometric Clark type sensors (STOX), optical sensors (optodes), and mass spectrometry in combination with 18- 18O2 labeling. Oxygen concentrations and consumption rates agreed well between the different methods when applied in the same experimental setting. Oxygen consumption rates between 30 and 400 nmol L-1 h -1 were measured with high precision and relative standard errors of less than 3%. Rate detection limits in the range of 1 nmol L-1 h -1 were suitable for rate determinations in open ocean water and were lowest at the lowest applied O2 concentration. © 2014 Holtappels et al.




Holtappels, M., Tiano, L., Kalvelage, T., Lavik, G., Revsbech, N. P., & Kuypers, M. M. M. (2014). Aquatic respiration rate measurements at low oxygen concentrations. PLoS ONE, 9(2).

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free