. The Biological bulletin. Biology; Zoology; Marine biology. OCCURRENCE OF NITRITE IN THE SEA 161 face nitrite have also been reported by Matsudaira and Yasui between Nagasaki and Shanghai. The vicinity of Bermuda is an area especially devoid of nitrite and other " ; A number of surface samples were collected from the harbors and bays of the Bermuda Islands, and even from their fresh water streams and ponds, with no more than traces of nitrite, and mini- mal amounts of nitrate. Seasonal Changes in Nitrite Figures 5, 6, and 7 contain the data from Locations 3, 5, 7, 8, 15 an
. The Biological bulletin. Biology; Zoology; Marine biology. OCCURRENCE OF NITRITE IN THE SEA 161 face nitrite have also been reported by Matsudaira and Yasui between Nagasaki and Shanghai. The vicinity of Bermuda is an area especially devoid of nitrite and other " ; A number of surface samples were collected from the harbors and bays of the Bermuda Islands, and even from their fresh water streams and ponds, with no more than traces of nitrite, and mini- mal amounts of nitrate. Seasonal Changes in Nitrite Figures 5, 6, and 7 contain the data from Locations 3, 5, 7, 8, 15 and 22 in the Gulf of Maine, arranged to show seasonal variations of nitrite 200. 200 Fig. 12. Relation of nitrite to temperature and density (<^^). Location 9, Gulf of Maine, at various times of year. Ordinates, depths in meters. and nitrate. Figure 12 shows the progressive changes at Location 9 in a different way. The following points are revealed: 1. A minimum of nitrite occurs in January and February, concen- trated at the surface. This corresponds to the period of maximum ni- trate and phosphate, when the water mass is nearly homogeneous. Nitrification is going on at the surface, but only very 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 Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
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