. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. BIGELOW: EXPLORATIONS OF THE COAST WATERS. 313 Some information as to the seasonal fluctuations in the amount of plankton present in the Gulf is afforded by the work done in 1915. In May of that year the volume of plankton, both per square meter (Fig. 93) and per cubic meter, was greatest in the east and west sides of the Gulf. But though the rich area extended right across the Gulf. Fig. 93.— Plankton per square meter of sea area, May 1915. 5, very rich 300 + co. 4, rich 100 + cc. 3, intermediate 30 — 100 cc. 1, scan
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. BIGELOW: EXPLORATIONS OF THE COAST WATERS. 313 Some information as to the seasonal fluctuations in the amount of plankton present in the Gulf is afforded by the work done in 1915. In May of that year the volume of plankton, both per square meter (Fig. 93) and per cubic meter, was greatest in the east and west sides of the Gulf. But though the rich area extended right across the Gulf. Fig. 93.— Plankton per square meter of sea area, May 1915. 5, very rich 300 + co. 4, rich 100 + cc. 3, intermediate 30 — 100 cc. 1, scanty 30 —cc. it ^ was indented on the north by less prolific water; and the zone along the northern coast, i. e., just where the diatom swarm was at its maximum, was very barren of large organisms, as illustrated by the following table of volumes per square, and per cubic meter for that year. These, however, are not directly comparable with the data for 1914, since a different net was used. > Its continuity depends on the richness of the horizontal surface haul at Station 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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