Author： Doi Hideyuki Zuykova Elena Kikuchi Eisuke Shikano Shuichi Kanou Keiichi Yurlova Natalia Yadrenkina Elena
Publisher： Springer Publishing Company
ISSN： 0018-8158
Source： Hydrobiologia, Vol.571, Iss.1, 2006-11, pp. : 395-400
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Abstract
We investigated spatial changes in the isotope ratios of the plankton food web in Lake Chany, Siberia, Russia, especially at an estuarine transition zone of the lake. The δ13C values of particulate organic matter (POM) varied among the sampling sites, and increased with increasing pH of the lake water. This may reflect a shift by phytoplankton from using CO2 to using bicarbonate for photosynthesis with increasing pH. The δ13C values of zooplankton community also changed at each site along with those of the POM. This was indicative of carbon isotope changes of plankton food webs between the stations along an environmental gradient.
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