. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. m m DEEP WATER STATIONS 0 10 ?0 30 40 SCALE I I I I I %PER 50M. DEPTH •^£ = INSUFFICIENT NUMBER5 (n) = NUMBER OF STATIONS FROM WHICH AVERAGE PERCENTAGES ARE TAKEN Fig. 56. Continuation of Fig. 55. 66° S. In our area we see it taken in very large numbers as far north as 46° S., far across the line of the Antarctic Convergence. Its seasonal distribution may be gauged, only on the slender material available, by comparing the C line of five stations taken in November 1926, December 1926, March 1926
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. m m DEEP WATER STATIONS 0 10 ?0 30 40 SCALE I I I I I %PER 50M. DEPTH •^£ = INSUFFICIENT NUMBER5 (n) = NUMBER OF STATIONS FROM WHICH AVERAGE PERCENTAGES ARE TAKEN Fig. 56. Continuation of Fig. 55. 66° S. In our area we see it taken in very large numbers as far north as 46° S., far across the line of the Antarctic Convergence. Its seasonal distribution may be gauged, only on the slender material available, by comparing the C line of five stations taken in November 1926, December 1926, March 1926 and again in May 1927, when the average numbers per 50 m. haul with the N 70 V net in the top 250 m. for each season are 5, 105, 143 and 69 respectively. We see a rapid increase in summer from a small spring population, and a falling off in the autumn. Its vertical distribution round South Georgia is shown in Fig. 61, and that approach- ing South Georgia from the north-east in February 1926, and between South Georgia and the Falkland Islands in Fig. 62. It was usually most abundant in the top 100 m., but St. WS 67, between South Georgia and the Falkland Islands, shows a marked exception when large numbers were taken between 1000 and 750 m., and very few in the water above this depth. Its mean vertical distribution at deep-water stations is shown in Fig. 55. The species showed indications of diurnal vertical migration; this is further discussed on p. 234 and illustrated in Figs. 103 and 106. 17. 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 Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colonial Office. Discovery Committee. London ; New York : Cambridge University Press
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
