Biogeosciences
Biogeosciences
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Articles | Volume 12, issue 22
Articles | Volume 12, issue 22
https://doi.org/10.5194/bg-12-6781-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-12-6781-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 12, issue 22
Research article
 | 
26 Nov 2015
Research article |  | 26 Nov 2015

Chlorophyll a-specific Δ14C, δ13C and δ15N values in stream periphyton: implications for aquatic food web studies

N. F. Ishikawa, M. Yamane, H. Suga, N. O. Ogawa, Y. Yokoyama, and N. Ohkouchi

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Short summary
We determined the isotopic composition of chlorophyll a in periphytic algae attached to a streambed substrate (periphyton). Although the bulk isotopic composition of periphyton is recognised as a surrogate for the photosynthetic algal community, our results indicate that the bulk periphyton matrix at the study site consists of 89 to 95% algal carbon and 5 to 11% terrestrial organic carbon. We show that the chlorophyll a isotopic composition is a useful tracer for the aquatic food web studies.
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