Articles | Volume 12, issue 22
Biogeosciences, 12, 6781–6789, 2015
https://doi.org/10.5194/bg-12-6781-2015
Biogeosciences, 12, 6781–6789, 2015
https://doi.org/10.5194/bg-12-6781-2015

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 et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (Editor review) (05 Nov 2015) by Tom J. Battin
AR by Naoto Ishikawa on behalf of the Authors (05 Nov 2015)  Author's response    Manuscript
ED: Publish subject to technical corrections (10 Nov 2015) by Tom J. Battin
AR by Naoto Ishikawa on behalf of the Authors (17 Nov 2015)  Author's response    Manuscript
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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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