8. Biogeochemical Consequences of Infaunal Activities

  1. Erik Kristensen,
  2. Ralf R. Haese and
  3. Joel E. Kostka
  1. Yoko Furukawa

Published Online: 23 MAR 2013

DOI: 10.1029/CE060p0159

Interactions Between Macro- and Microorganisms in Marine Sediments

Interactions Between Macro- and Microorganisms in Marine Sediments

How to Cite

Furukawa, Y. (2005) Biogeochemical Consequences of Infaunal Activities, in Interactions Between Macro- and Microorganisms in Marine Sediments (eds E. Kristensen, R. R. Haese and J. E. Kostka), American Geophysical Union, Washington, D. C.. doi: 10.1029/CE060p0159

Publication History

  1. Published Online: 23 MAR 2013
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9780875902746

Online ISBN: 9781118665442

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Keywords:

  • Interactions between macro- and microorganisms in marine sediments

Summary

Activities of sedimentary infauna have significant consequences on overall sedimentary diagenesis. Infauna directly participate in sedimentary processes by organic matter metabolization coupled to aerobic respiration and metabolite excretion. In addition, they indirectly influence the diagenetic pathways by changing the transport regimes of dissolved and particulate species as well as by modifying microbial habitats. The couplings between infaunal activities and their biogeochemical consequences have been studied in recent years, but many of the results and conclusions remain site- and species-specific due to the diverse and highly interrelated ways in which sedimentary infauna interact with the transport, reaction, and microbial regimes. A generalized understanding of infauna-influenced sedimentary systems will require (1) a systematic classification of the infauna-sediment interaction mechanisms and (2) a comprehensive model framework that incorporates all known effects of infauna-sediment interactions associated with transport, reaction, and microbial regimes.