. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 1 1 1 ANTARCTIC. ~i 1 1 1 1 1 1 1 r n m r? v vi th vjh MONTH IX x xi xn Fig. 9. Seasonal variation in the mean total volume of zooplankton in the whole water column sampled*( 1000-0 m.) in the sub-Antarctic and Antarctic. Numbers on each curve as in Fig. 8. It will be remembered that in calculating the monthly mean volumes for each depth interval the actual measurements had to be corrected to give the volume for a standard haul of 50 m. In this way variations in concentration at different le
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 1 1 1 ANTARCTIC. ~i 1 1 1 1 1 1 1 r n m r? v vi th vjh MONTH IX x xi xn Fig. 9. Seasonal variation in the mean total volume of zooplankton in the whole water column sampled*( 1000-0 m.) in the sub-Antarctic and Antarctic. Numbers on each curve as in Fig. 8. It will be remembered that in calculating the monthly mean volumes for each depth interval the actual measurements had to be corrected to give the volume for a standard haul of 50 m. In this way variations in concentration at different levels in the whole water column can be assessed. When, however, the individual measurements at each depth are added together the resultant volume is a measure of the total standing crop of plankton in the whole water column sampled. Table 4 gives the mean monthly total volumes together with the number of observations in each month in the sub- Antarctic and Antarctic zones. It is compiled from all stations with a complete series of measurements from 1000 to o m., and the results are shown in Fig. 9. The monthly mean volumes show that, compared to the surface waters, there is relatively little. 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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