Assessment of Primary Production in a Eutrophic Lake from Carbon and Nitrogen Isotope Ratios of a Carnivorous Fish(A Pond Smelt) (質量分析連合討論会シンポジウム--生物活動と地球環境)

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概要

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• The carbon and nitrogen isotope ratios of Hypomesus transpacificus (a pond smelt) in a eutrophic lake, Lake Suwa, were measured from April to September in 1986 and 1987. The differences in the isotope ratios between these two years were observed. The stable isotopes were transferred from phytoplankton to zooplankton and pond smelt, associated with organic matters. Therefore, the difference in the isotope ratios in two years seemed to reflect the differences of the proceeding of primary production. It ws suggested that the carbon and nitrogen isotope ratios of animal, whose trophic level is far from primary producer, can be the qualitative indicators for assessing the primary production in a lake ecosystem.

• 日本質量分析学会の論文

著者

• YOSHIOKA Takahito

  Faculty of Science, Shinshu University

関連論文

• Assessment of Primary Production in a Eutrophic Lake from Carbon and Nitrogen Isotope Ratios of a Carnivorous Fish(A Pond Smelt) (質量分析連合討論会シンポジウム--生物活動と地球環境)

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