TY - JOUR
T1 - In search of the dead zone
T2 - Use of otoliths for tracking fish exposure to hypoxia
AU - Limburg, Karin E.
AU - Walther, Benjamin D.
AU - Lu, Zunli
AU - Jackman, George
AU - Mohan, John
AU - Walther, Yvonne
AU - Nissling, Anders
AU - Weber, Peter K.
AU - Schmitt, Axel K.
N1 - Funding Information:
We thank A. M. Gorman and C. Vandergoot, Ohio Department of Natural Resources, for providing yellow perch otoliths, R. Monteiro for the alewife otolith, D. Dale (Cornell University), D. Driscoll (ESF), and N. Miller (Jackson School of Geoscience) for help with SXFM and LA-ICPMS analyses, and P. Thomas for ship time in the northern Gulf of Mexico. D. Swaney and R. Kraus provided helpful comments on an earlier draft, as did three anonymous reviewers. We thank the National Fish and Wildlife Foundation for partial support; we also thank D. Conley for partial financial support through the FORMAS “Multistressors Project” . This work is based in part upon research conducted at the Cornell High Energy Synchrotron Source (CHESS) which is supported by the National Science Foundation and the National Institutes of Health / National Institute of General Medical Sciences under NSF award DMR-00936384 .
Publisher Copyright:
© 2014 .
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Otolith chemistry is often useful for tracking provenance of fishes, as well as examining migration histories. Whereas elements such as strontium and barium correlate well with salinity and temperature, experiments that examine manganese uptake as a function of these parameters have found no such correlation. Instead, dissolved manganese is available as a redox product, and as such, is indicative of low-oxygen conditions. Here we present evidence for that mechanism in a range of habitats from marine to freshwater, across species, and also present ancillary proxies that support the mechanism as well. For example, iodine is redox-sensitive and varies inversely with Mn; and sulfur stable isotope ratios provide evidence of anoxic sulfate reduction in some circumstances. Further, S may be incorporated trophically whereas other elements appear to be taken up directly from water. This research suggests a potential means to identify individual fish exposure to hypoxia, over entire lifetimes. With further testing and understanding, in the future fish may be able to be used as "mobile monitors" of hypoxic conditions.
AB - Otolith chemistry is often useful for tracking provenance of fishes, as well as examining migration histories. Whereas elements such as strontium and barium correlate well with salinity and temperature, experiments that examine manganese uptake as a function of these parameters have found no such correlation. Instead, dissolved manganese is available as a redox product, and as such, is indicative of low-oxygen conditions. Here we present evidence for that mechanism in a range of habitats from marine to freshwater, across species, and also present ancillary proxies that support the mechanism as well. For example, iodine is redox-sensitive and varies inversely with Mn; and sulfur stable isotope ratios provide evidence of anoxic sulfate reduction in some circumstances. Further, S may be incorporated trophically whereas other elements appear to be taken up directly from water. This research suggests a potential means to identify individual fish exposure to hypoxia, over entire lifetimes. With further testing and understanding, in the future fish may be able to be used as "mobile monitors" of hypoxic conditions.
KW - Biogeochemical markers
KW - Fish otoliths
KW - Hypoxia proxies
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U2 - 10.1016/j.jmarsys.2014.02.014
DO - 10.1016/j.jmarsys.2014.02.014
M3 - Article
AN - SCOPUS:85027943199
SN - 0924-7963
VL - 141
SP - 167
EP - 178
JO - Journal of Marine Systems
JF - Journal of Marine Systems
ER -