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Effects of 22-μ m Screens on Size-Frequency Distributions of Suspended Particles and Biomass Estimates of Phytoplankton Size Fractions

Thomas C. Malone, Mira B. Chervin and David C. Boardman
Limnology and Oceanography
Vol. 24, No. 5 (Sep., 1979), pp. 956-960
Stable URL: http://www.jstor.org/stable/2835335
Page Count: 5
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Effects of 22-μ m Screens on Size-Frequency Distributions of Suspended Particles and Biomass Estimates of Phytoplankton Size Fractions
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Abstract

Fractionation of whole water samples through 22-μ m mesh screens reduced the concentration of particles with mean spherical diameters (MDS) > 10 μ m. Fractionation did not effect particle concentrations $<10 \mu m$ when nanoplankton dominated but resulted in an increase when net plnakton dominated as a consequence of the breakup of chains. A 50% removal usually occurred at a MSD of 16 μ m. Correlations between the chlorophyll a content and volume of size fractions were significant, and nanoplankton had more chlorophyll a per unit volume than net plankton.

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