The influence of carbon dioxide-depletion on growth and sinking rate of two planktonic diatoms in culture
作者： G.H.M. Jaworski , J.F. Talling , S.I. Heaney
DOI: 10.1080/00071618100650461
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摘要: Growth in relation to CO2-depletion and CO2-enrichment was investigated for the freshwater diatoms Asterionella formosa Fragilaria crotonensis batch cultures. Algal concentration pH were measured during growth cycles, inorganic carbon quantities determined by potentiometric Gran titrations from pH-alkalinity relationships. After primary with increase, successive CO2-enrichments induced further such cycles produced a final three- fivefold increase algal biomass over that of unenriched controls. The extent CO2-depletion, rise, greater later indicative some cellular adaptation. Values reached 9·7 9·9 Fragilaria. lowest residual free CO2 0·1 0·03 μmol 1-1 respectively, which less than 0·05% corresponding total CO2. limitation CO2-uptake probably related concentra...
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