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DOI:	10.1371/journal.pone.0089369
论文题名:	Aquatic Respiration Rate Measurements at Low Oxygen Concentrations
作者:	Moritz Holtappels; Laura Tiano; Tim Kalvelage; Gaute Lavik; Niels Peter Revsbech; Marcel M. M. Kuypers
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-2-19
卷:	9, 期:2
语种:	英语
英文关键词:	Oxygen ; Oxygen consumption ; Sea water ; Linear regression analysis ; Cathodes ; Glass ; Aquatic respiration ; Oceans
英文摘要:	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.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0089369&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/19677
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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File Name/ File Size	Content Type	Version	Access	License
journal.pone.0089369.PDF（706KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Bremen, Germany;Department of Bioscience, Microbiology, Aarhus University, Aarhus, Denmark;Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Bremen, Germany;Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada;Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Bremen, Germany;Department of Bioscience, Microbiology, Aarhus University, Aarhus, Denmark;Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Bremen, Germany

Recommended Citation:

Moritz Holtappels,Laura Tiano,Tim Kalvelage,et al. Aquatic Respiration Rate Measurements at Low Oxygen Concentrations[J]. PLOS ONE,2014-01-01,9(2)

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