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A New Method for Concentrating Phytoplankton by Filtration with Continuous Stirring

Ian Morris and Charles S. Yentsch
Limnology and Oceanography
Vol. 17, No. 3 (May, 1972), pp. 490-493
Stable URL: http://www.jstor.org/stable/2834511
Page Count: 4
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A New Method for Concentrating Phytoplankton by Filtration with Continuous Stirring
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Abstract

Phytoplankton (both natural populations and cultures) have been concentrated 20-fold to 200-fold by passage through an ultrafiltration cell with continuous magnetic stirring. Conditions yielding maximum recovery of physiologically active phytoplankton have been developed. Recovery of 14C-carbon dioxide assimilation activity was comparable to that of chlorophyll, generally varying from 55-75% for natural populations and from 70-95% for cultures.

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