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Clinical medicine --- Stable isotopes --- Stable isotopes in medical diagnosis

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Stable isotopes in ecological research.

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The goal for Volume 55 of Reviews in Mineralogy and Geochemistry was to bring together a summary of the isotope geochemistry of non-traditional stable isotope systems as is known through 2003 for those elements that have been studied in some detail, and which have a variety of geochemical properties. In addition, recognizing that many of these elements are of interest to workers who are outside the traditional stable isotope fields, we felt it was important to include discussions on the broad isotopic variations that occur in the solar system, theoretical approaches to calculating isotopic fractionations, and the variety of analytical methods that are in use. We hope, therefore, that this volume proves to be useful to not only the isotope specialist, but to others who are interested in the contributions that these non-traditional stable isotopes may make toward understanding geochemical and biological cycles. The review chapters in this volume were the basis for a two-day short course on nontraditional stable isotopes held prior (May 15-16, 2004) to the spring AGU/CGU Meeting in Montreal, Canada.

Isotopes --- Geochemistry --- Stable isotopes --- Isotope geology

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Stable isotopes are frequently used as tracers in biological systems, and their ability to track changes and processes over time has made them increasingly important to ecological research. For ecologists, stable isotopes provide a natural way to directly trace details of element cycling in the environment. Stable Isotope Ecology provides a solid introduction to this advanced subject, and can also be used as an instructive review for more experienced researchers and professionals. The book approaches the use of isotopes from the perspective of ecological and biological research, but its concepts can be applied within other disciplines as well. In order to enable scientists to establish source-sink connections in ecological settings, Stable Isotope Ecology begins by reviewing fundamental topics of tracer fractionation and mixing. Several mini-reviews profile problems and successes encountered with isotope tracing in particular focus areas, while emphasizing the role that humans increasingly play in changing our planetary ecosphere. A novel, step-by-step spreadsheet modeling approach is also presented for circulating tracers in any ecological system, including any favorite system an ecologist might dream up while sitting at a computer. Just type in values and watch the isotope action unfold in the dynamic models. Fry's humorous and lighthearted style painlessly imparts the principles of isotope ecology, using a unique, hands-on approach to engage students. The mechanics of fractionation and mixing are laid out in simple steps, with numerous examples and accessible mathematics (algebra only).  The book encourages students to begin their own pilot project with stable isotopes. About the Author: Dr. Brian Fry is a Professor in the Coastal Ecology Institute and the Department of Oceanography and Coastal Studies at Louisiana State University in Baton Rouge, Louisiana. His mother and father both used isotopes in their research careers, so he is a second generation isotope scientist.

Stable isotopes in ecological research. --- Stable isotopes in ecological research --- GG Geochemistry --- Ecology --- Geochemie --- Research

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Baltic sea --- Food chains --- Plankton --- Stable isotopes --- Baltic sea --- Food chains --- Plankton --- Stable isotopes