Estimation of periphytic microalgae gross primary production with DCMU-fluorescence method in Yenisei River (Siberia, Russia) |
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| Authors: | V I Kolmakov O V Anishchenko E A Ivanova M I Gladyshev N N Sushchik |
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| Institution: | (1) Siberian Federal University, Svobodny av.79, Krasnoyarsk, 660041, Russia;(2) Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia;(3) Krasnoyarsk State Agricultural University, Mira av., 88, Krasnoyarsk, 660049, Russia |
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| Abstract: | Periphyton (epilithon) gross primary production (GPP) was estimated using the DCMU-fluorescence method in the Yenisei River.
In the unshaded littoral zone, chlorophyll a concentration (Chl a) and GPP value varied from 0.83 to 973.74 mg m−2and 2–304,425 O2 m−2 day−1 (0.64–95 133 mg C m−2 day−1), respectively. Positive significant correlation (r = 0.8) between daily GPP and periphyton Chl a was found. Average ratio GPP:Chl a for periphyton was 36.36 mg C mg Chl a m−2 day−1. The obtained GPP values for the Yenisei River have a high significant correlation with values predicted by a conventional
empirical model for stream periphyton. We concluded that the DCMU-fluorescence method can be successfully used for measuring
of gross primary production of stream phytoperiphyton at least as another useful tool for such studies. |
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| Keywords: | Chlorophyll fluorescence Periphytic microalgae Gross primary production |
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