Photosynthetic activity of benthic diatoms in response to different temperatures |
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Authors: | Mi Sun Yun Sang Heon Lee Ik Kyo Chung |
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Institution: | (1) Division of Polar Biology & Ocean Science, Korea Polar Research Institute, Songdo Techno Park, 7-50, Songdo-dong, Yeonsu-gu, Incheon, 406-840, Korea;(2) Division of Earth Environmental System, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, Busan, 609-735, Korea |
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Abstract: | The photosynthetic activities of benthic diatoms in response to temperature changes were assessed by measuring chlorophyll
fluorescence kinetics. Small benthic diatom species with large surface area to volume (SA/V) ratios responded to increasing temperature differently from large diatoms, since larger ratios caused lower photosynthetic
activity under high-temperature conditions. The small SA/V ratios of large cells may be advantageous in benthic environments under adverse conditions such as high temperature and/or
strong light. A size-dependent differential response of benthic diatoms to changes in environmental factors such as temperature
may result in an altered distribution of the different diatom communities. |
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