Seasonal changes of carbon and nitrogen stable isotope ratios for dominant species: chironomid larvae, phytoplankton, and benthic diatom inhabiting strongly acidic Lake Katanuma
スポンサーリンク
概要
- 論文の詳細を見る
Lake Katanuma is a colcanic, strongly acidic lake (average pH of 2.2), located in Miyagi prefecture, Japan. Only a few spieccies are found in Katanuma; Chironomus acerbiphis larvae as benthic invertebrate, Pinnularia baunii as benthic diatom, and Chlamydomonas acidophila as phytoplnkton. We tried analyzing seasonal changes of carbon and nitrogen stable isotope raios foethese spicies in Lake Katanuma. Food souece analysis by isotope ratios clearly showed main food source for Chironomus acerbiphilus larvae was P.braunii (benthic diatom). δ1C values of P.braunii varied seasonally, while those of POM (mainly phytoplankton) remained fairly stable. The difference of stable isotope ratios in these orfanisms discussed.
- 信州大学の論文
- 2004-02-28
著者
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Takagi S
Tohoku Univ. Sendai Jpn
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DOI Hideyuki
Graduate School of Life Sciences, Tohoku University
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KIKUCHI Eisuke
The Center for Northeast Asian Studies, Tohoku University
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TAKAGI Shigeto
Graduate School of Life Sciences, Tohoku University
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SHIKANO Shuichi
The Center for Northeast Asian Studies, Tohoku University
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Shikano Shuichi
Center For Northeast Asian Studies Tohoku University
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Doi Hideyuki
Graduate School Of Life Sciences Tohoku University
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Kikuchi E
Center For Northeast Asian Studies Tohoku University
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- Seasonal changes of carbon and nitrogen stable isotope ratios for dominant species: chironomid larvae, phytoplankton, and benthic diatom inhabiting strongly acidic Lake Katanuma
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