Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Carbon Stable Isotope Ratios of Phytoplankton and Benthic Diatoms in Lake Katanuma with Reference to Those of Other Lakes

  • Published : 2005.04.30
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Abstract

Carbon stable isotope ratios of producers varied in lake ecosystems. In tile present study, we tried to estimate the seasonal variations of carbon isotope ratios of phytoplankton and benthic diatoms in a strongly acidic lake ecosystem. Lake Katanuma is a volcanic, strongly acidic lake (average pH of 2.2), located in Miyagi, Japan. Only two algal species dominate in Lake Katanuma; Pinnularia acidojaponica as a benthic diatom, and Chlamydomonas acidophila as a green alga. Carbon isotope values of P. acidojaponica varied seasonally, while those of particulate organic matter, which were mainly composed of C. acidophila remained fairly stable. The differences suggested that $CO_2$ gas was more frequently limited for P. acidojaponica than C. acidophila, since high density patches of benthic diatoms were sometimes observed on the lake sediment. Generally, carbon concentration mechanisms (CCMs)of microalgae can fix bicarbonate in lakes, and affect the carbon isotope values of microalgae. While, in Lake Katanuma, CCMs of the microalgae may scarcely function because of high $CO_2$ gas concentration and low pH. This is the reason for low seasonal amplitude of carbon isotope values of phytoplankton relative to those in other lakes.

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References

  1. Bukaveckas, P.A. 1993. Changes in primary produc-tivity associated with liming and reacidification of an Adirondack Lake. Environmental Pollution. 79: 127-133.
  2. Doi, H., E. Kikuchi and S. Shikano. 2001. Carbon and nitrogen stable isotope ratios analysis of food sources for Chironomus acerbiphilus larvae (Diptera, Chrinomidae) in strongly acidic Lake Katanuma. Radioisotopes 50: 601-611.
  3. Doi, H., E. Kikuchi, S. Hino, T. Itoh, S. Takagi and S. Shikano. 2003. Seasonal dynamics of carbon stable isotope ratios of particulate organic matter and benthic diatoms in strongly acidic Lake Katanuma. Aquat. Microb. Ecol. 33: 87-94.
  4. France, R.L. 1995. Cabon-13 enrichment in benthic compared to planktonic algae: foodweb implications. Mar. Ecol. Prog. Ser. 124: 307-312.
  5. Hollander, D.J. and J.A. McKenzie. 1991. $CO_2$ control on carbon-isotope fractionation during aqueous photosynthesis: A paleo-p$CO_2$ barometer. Geology 19: 929-932.
  6. Lucas, W.J. and J.A. Berry. 1985. Inorganic carbon transport in aquatic photosynthetic organisms. Physiol. Plant. 65: 539-543.
  7. Paneth, P. and M.H. O’Leary. 1985. Carbon isotope effect on dehydration of bicarbonate ion catalyze by carbon anhydrase. Biochemistry. 24: 5143- 5147.
  8. Riber, H.H. and R.G. Wetzel. 1987. Boundary-layer and internal diffusion effects n phosphorus fluxes in lake periphyton. Limnol. Oceanogr. 32: 1181- 1194.
  9. Satake, K. and Y. Saijo. 1978. Mechanism of lamination in bottom sediment of the strongly acid Lake Katanuma. Arch. Hydrobiol. 83: 429-442.
  10. Stiller, M. 1977. Origin of sedimentation of components in Lake Kinneret traced by their isotopic composition. In Interactions between sediments and freshwater. Proc. 1st Int. Symp. Junk. pp. 57-64.
  11. Takahashi, T., T. Yoshioka, E. Wada and M. Sakamoto. 1990a. Carbon isotope discrimination by phytoplankton and photosynthetic bacteria in monomictic Lake Fukami-ike. Arch. Hydrobiol. 120: 197-210.
  12. Takahashi, T., T. Yoshioka, E. Wada and M. Sakamoto. 1990b. Temporal variations in carbon isotope ratio of phytoplankton in a eutrophic lake. J. Plankton Res. 4: 545-560.
  13. Yoshioka, T. 1997. Phytoplanktonic carbon isotope fractionation: equations accounting for $CO_2$-concentrating mechanisms. J. Plankton Res. 19: 1455-1476.
  14. Yoshioka, T., H. Hayashi and E. Wada. 1989. Seasonal variations of carbon and nitrogen isotope ratios of plankton and sinking particles in Lake Kizaki. Jpn. J. Limnol. 50: 313-320.
  15. Zohary, T., J. Erez, M. Gophen, I. Berman-Frank and M. Stiller. 1994. Seasonality of stable carbon isotopes within the pelagic food web of Lake Kinneret. Limnol, Oceanogr. 39: 1030-1043.