Coastal-Offshore Ecosystem Interactions

Proceedings of a Symposium sponsored by SCOR, UNESCO, San Francisco Society, California Sea Grant Program, and U.S. Dept. of Interior, Mineral Management Service held at San Francisco State University, Tiburon, California, April 7–22, 1986

  • Bengt-Owe Jansson

Part of the Lecture Notes on Coastal and Estuarine Studies book series (COASTAL, volume 22)

Table of contents

  1. Front Matter
    Pages I-XV
  2. Water Exchange

  3. Mass Balance Studies

    1. Front Matter
      Pages 67-67
    2. H. Postma
      Pages 102-121
    3. T. H. Pearson
      Pages 188-208
    4. S. V. Smith
      Pages 209-226
    5. David H. Peterson, Stephen W. Hager, Laurence E. Schemel, Daniel R. Cayan
      Pages 227-253
  4. Active Transport

    1. Front Matter
      Pages 255-255
  5. Numerical Modelling

    1. Front Matter
      Pages 307-307
  6. Coastal-Offshore Interactions

    1. Front Matter
      Pages 355-355
    2. B.-O. Jansson, A. D. McIntyre, S. W. Nixon, M. M. Pamatmat, B. Zeitzschel, J. J. Zijlstra
      Pages 357-363
  7. Back Matter
    Pages 364-367

About these proceedings


stable isotope ratios act as naturally-occurring tracers for organic matter, making possible, under certain conditions, the quantification of coastal-offshore exchanges. In general, organic matter has isotope ratios characteristic of its origin (e. g. plants with different modes of photosynthesis and different growth conditions, anthropogenic compounds). These ratios are maintained as the organic matter moves through the biosphere and geosphere. A mixture of organic matter from two sources has isotope ratios intermediate between those of the two sources, in proportion to the fraction of material from each source. Isotope ratios are one of the few methods which can trace organic matter as it moves through natural ecosystems. Ratios can be measured on both the total organic matter and on particular chemical fractions or compounds. When used on organisms, isotope ratios provide information of organic matter actually assimilated into body tissues, not just material ingested. As with all tools, this method has certain limitations which must be borne in mind when interpreting its results. Firstly, specific environmental conditions must be met. This generally means an ecosystem with a limited and known number of sources of organic matter having different isotope ratios. Two sources with different isotope ratios are ideal; additional sources with other isotope ratios complicate interpretation. Secondly, the difference in isotope ratios of the two sources should be large compared with analytical variability. Thirdly, the ratios within each source should vary as little as possible.


Coast Mangrove Ocean ecosystem energy environment lake

Editors and affiliations

  • Bengt-Owe Jansson
    • 1
  1. 1.Askö LaboratoryUniversity of StockholmStockholmSweden

Bibliographic information

  • DOI
  • Copyright Information Springer-Verlag Berlin Heidelberg 1988
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Springer Book Archive
  • Print ISBN 978-3-540-19051-6
  • Online ISBN 978-3-642-52452-3
  • Series Print ISSN 0724-5890
  • Buy this book on publisher's site