期刊
JOURNAL OF MARINE SYSTEMS
卷 141, 期 -, 页码 167-178出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmarsys.2014.02.014
关键词
Fish otoliths; Biogeochemical markers; Hypoxia proxies
资金
- National Fish and Wildlife Foundation
- FORMAS Multistressors Project
- National Science Foundation
- National Institutes of Health/National Institute of General Medical Sciences under NSF [DMR-00936384]
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. (C) 2014 The Authors. Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据