Articles | Volume 12, issue 22
Biogeosciences, 12, 6781–6789, 2015
Biogeosciences, 12, 6781–6789, 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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Cited articles

Allan, J. D. and Castillo, M. M.: Stream Ecology: Structure and Function of Running Waters, 2nd ed., Springer, Dordrecht, Germany, 436 pp., 2007.
Amir-Shapira, D., Goldschmidt, E. E., and Altman, A.: Chlorophyll catabolism in senescing plant tissues: In vivo breakdown intermediates suggest different degradative pathways for citrus fruit and parsley leaves, P. Natl. Acad. Sci. USA, 84, 1901–1905, 1987.
Beaumont, V. I., Jahnke, L. L., and Des Marais, D. J.: Nitrogen isotopic fractionation in the synthesis of photosynthetic pigments in Rhodobacter capsulatus and Anabaena cylindrica. Org. Geochem., 31, 1075–1085, 2000.
Berner, R. A., Lasaga, A. C., and Garrels, R. M.: The carbonate–silicate geochemical cycle and its effect on atmospheric carbon dioxide over the past 100 million years, Am. J. Sci., 283, 641–683, 1983.
Bloemen, J., McGuire, M. A., Aubrey, D. P., Teskey, R. O., and Steppe, K.: Transport of root-respired CO2 via the transpiration stream affects aboveground carbon assimilation and CO2 efflux in trees, New Phytol., 197, 555–565, 2013.
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.
Final-revised paper