. Bulletin - United States National Museum. Science. 136 NATIONAL MUSEUM BULLETIN 291 ever, exceeds Therefore, the Antarctic population of B. dbys- sicola occurs very prominently in the layer of maximum salinity. The greatest frequency of tows and individuals occurs on the density histogram between sigma-t= and (fig. 41). Forty-two per- cent of the individuals, taken by 43% of the tows, occupy to and 29%, from 18% of the tows, occupy to Eighty- three percent of the individuals were captured in high densities greater than sigma-t= The hist
. Bulletin - United States National Museum. Science. 136 NATIONAL MUSEUM BULLETIN 291 ever, exceeds Therefore, the Antarctic population of B. dbys- sicola occurs very prominently in the layer of maximum salinity. The greatest frequency of tows and individuals occurs on the density histogram between sigma-t= and (fig. 41). Forty-two per- cent of the individuals, taken by 43% of the tows, occupy to and 29%, from 18% of the tows, occupy to Eighty- three percent of the individuals were captured in high densities greater than sigma-t= The histogram for oxygen (O2) concentration shows two peaks of abundance (fig. 42). The first peak occurs at the ml/L incre- ment where 14% of the total captures accounted for 24% of the speci- mens. The second peak lies at the two increments between ml/L t ^ ^ ^ . ^ . jvsxv^x^XXVvX>. .49 .5 0 .59 .60 Salinity 34. %o Figure 40.— Frequency of captures and individuals of Bathyteuthis ahyssicola at salinity increments in the Antarctic Ocean. Hatched area is number of captures (n=136); clear area is number of individuals (n = 591); Crosshatch and dots are breakdown of captures and individuals by .03% 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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