ePIC

Stable isotope food web studies: a case for standardized sample treatment

Edit Item Edit Item

General Information:

Citation:
Jacob, U. , Mintenbeck, K. , Brey, T. , Knust, R. and Beyer, K. (2005): Stable isotope food web studies: a case for standardized sample treatment , Marine ecology-progress series, 287 , pp. 251-253 .
Cite this page as:
Contact Email:
Download:

[img]
Preview
PDF
Jacob05_MEPS287.pdf

Download (78Kb) | Preview
Cite this document as:
Supplementary Information:

Campaigns:
Abstract:

The enrichment of the stable isotopes 13C and 15N across trophic levels is a commonly used tool in studies on organic matter flow and food webs. An accepted standard for pre-analysis sample preparation, however, is still missing. Thus, potential methodological bias in single studies may hamper comparability and scalability of data from different sources. Sample CaCO3 content introduces a positive bias in ?13C measurements and a negative bias in ?15N measurements. The acidification of samples to remove inorganic carbonate significantly reduces both ?13C and ?15N. As a standard procedure we recommend (i) to acidify samples with as little hydrochloric acid (HCl) as possible using the drop-by-drop technique and (ii) to restrain from rinsing after HCl application.

Further Details:

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