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Tissue preservation biases in stable isotopes of fishes and molluscs from Patagonian lakes

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Abstract:

Field work commonly involves preserving samples for later use; however, most preservation methods distort stable‐isotope (SI) signatures that are of interest to ecologists. Although preservation of muscle samples with table salt and rubbing alcohol affected the SI (δ 13C and δ 15N) of important consumers in Patagonian lakes (molluscs and fishes), variation among individuals and lakes generally exceeded that among preservation treatments. Mathematical corrections for these preservation biases are provided, and a potentially bias‐free preservation by air‐drying is suggested.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1095-8649.2012.03453.x

Publication date: November 1, 2012

bsc/jfb/2012/00000081/00000006/art00018
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