ePIC

Oxygen microoptodes: a new tool for oxygen measurements in aquatic animal ecology

Edit Item Edit Item

General Information:

Citation:
Gatti, S. , Brey, T. , Müller, W. E. G. , Heilmayer, O. and Holst, G. (2002): Oxygen microoptodes: a new tool for oxygen measurements in aquatic animal ecology , Marine biology, 140 (6), pp. 1075-1085 . doi: 10.1007/s00227-002-0786-9
Cite this page as:
DOI:
Official URL:
Contact Email:
Download:

[img]
Preview
PDF (Fulltext)
Gat2001a.pdf

Download (247Kb) | Preview
Cite this document as:
Supplementary Information:

Abstract:

We describe two applications of a recently introduced system for very precise, continuous measurement of water oxygen saturation. Oxygen microoptodes (based on the dynamic fluorescence quenching principle) with a tip diameter of ~50µm, an 8-channel optode array, an intermittent flow system, and online data registration were used to perform two types of experiments. The metabolic activity of Antarctic invertebrates (sponges and scallops) was estimated in respiration experiments and, secondly, oxygen saturation inside living sponge tissue was determined in different flow regimes. Even in long-term experiments (several days) no drift was detectable in between calibrations. Data obtained were in excellent correspondence with control measurements performed with a modified Winkler method. Antarctic invertebrates in our study showed low oxygen consumption rates ranging from 0.03 - 0.19 cm3O2oh-1oind-1. Oxygen saturation inside living sponge specimens was affected by flow regime and culturing conditions of sponges. Our results suggest that oxygen optodes are a reliable tool for oxygen measurements beyond the methodological limits of traditional methods.

Further Details:

Imprint
AWI
Policies:
read more
OAI 2.0:
http://epic.awi.de/cgi/oai2
ePIC is powered by:
EPrints 3