. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. VERTICAL DISTRIBUTION OF ZOOPLANKTON 129 umes at the time. And while numbers of euphausiids like quantities of plankton increased below 1,200 meters, the importance of this group in the total animal community decreased at these same stations right down to the deepest layer sampled (Fig. 3, A }, the number of euphau- siids per 50 cc. of plankton being much smaller at depths greater than 500 meters than in the upper 300 meter-. This vertical relationship 100 ISO 20Q 250 300 350 1000 1250 1500 500 1000 1500 2000 2500 3000 3500
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. VERTICAL DISTRIBUTION OF ZOOPLANKTON 129 umes at the time. And while numbers of euphausiids like quantities of plankton increased below 1,200 meters, the importance of this group in the total animal community decreased at these same stations right down to the deepest layer sampled (Fig. 3, A }, the number of euphau- siids per 50 cc. of plankton being much smaller at depths greater than 500 meters than in the upper 300 meter-. This vertical relationship 100 ISO 20Q 250 300 350 1000 1250 1500 500 1000 1500 2000 2500 3000 3500 40OO. 1750 2000 2250 2500 2750 3000 3250 FIG. 3. A, Calculated numbers of euphausiids per 50 cc. of plankton from dif- ferent depths at Stations 1733, 1735, and 1737. B, Calculated numbers of euphau- siids per 50 cc. of plankton from different depths at Station 1739, determined from average catch at average depths. also obtained for Station 1739 (Fig. 3, B~), though at this locality there was a secondary maximum in relative importance of euphausiids at about 1,800 meters. This decrease, with increasing depth, both in numbers and relative importance of euphausiids, is furthermore accompanied by a corre- sponding decrease in the specific diversity of the group, the counts listed in Tables II-V showing that whereas some fifteen species are taken in. 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 the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
