. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 254 S. IIAYKN AN'D MORALES-ALAMO I'iltration under flow o\ l/inin using 12 oysters Filtration of natural particles was studied in 1966 using 12 oysters and a flow of l/inin. A total of six studies was combined into a composite curve at intervals of * (Fig. 2). Particles in the undiluted water entering the trough were by far the most abundant in the to /JL size range where an average of over 1 billion per liter was measured. Numbers decreased rapidly with size and only 70,000 per liter
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 254 S. IIAYKN AN'D MORALES-ALAMO I'iltration under flow o\ l/inin using 12 oysters Filtration of natural particles was studied in 1966 using 12 oysters and a flow of l/inin. A total of six studies was combined into a composite curve at intervals of * (Fig. 2). Particles in the undiluted water entering the trough were by far the most abundant in the to /JL size range where an average of over 1 billion per liter was measured. Numbers decreased rapidly with size and only 70,000 per liter were o z UJ O cr LJ -100- -80- -60- -40 - -20- ct LJ Q. + 20- + 40 KAOLINITE PARTICLES 1964 - I 965. 13 -i 5 12 01 2345678 PARTICLE DIAMETER (») FIGURE 3. Mean per cent difference between particle numbers in water entering and water leaving experimental troughs for separate size fractions in 1964-1965 kaolinite particles experi- ments; open bars — oysters, solid bars == shells; horizontal line =- mean, vertical line = range, bar = interval estimate (.f ± S^). Figures over bars indicate number of replications. measured in the to p size range (Table I). Total solids were not consistently measured; however, during July and August 1966 in the York River they ranged from to nig/1, with a mean of about nig/1 (Haven and Morales-Alamo, 1966a). Oysters removed a mean of 18% of the particles between 1 and 2 /JL. Average removal increased to 53% between and /J-. Above this size, there was no evidence of further differences in efficiency of removal up to p. Mean per cent differences between inflow and outflow in the controls were close to zero with a small variance for most size intervals. There was no evidence of a difference among these Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
