Discovery reports (1962) Discovery reports discoveryreports31inst Year: 1962 Fig. 38. Distribution of dissolved oxygen. Section off the mouth of Orange river, 12-14 March 1950, survey I. Positions of stations are shown in Fig. 1. STATIONS SEA MILES OFFSHORE 100 O WS986 WS989 I £ 200- 300- 400 Fig. 39. Distribution of dissolved oxygen. Section off Sylvia Hill, 10-11 March 1950, survey I. Positions of stations are shown in Fig. 1. Here, even with a recorded phytoplankton population of more than io7 cells (Table 14) the surface- water was only 5-8 saturated with oxygen (cf. Steeman-Nielsen,
Discovery reports (1962) Discovery reports discoveryreports31inst Year: 1962 Fig. 38. Distribution of dissolved oxygen. Section off the mouth of Orange river, 12-14 March 1950, survey I. Positions of stations are shown in Fig. 1. STATIONS SEA MILES OFFSHORE 100 O WS986 WS989 I £ 200- 300- 400 Fig. 39. Distribution of dissolved oxygen. Section off Sylvia Hill, 10-11 March 1950, survey I. Positions of stations are shown in Fig. 1. Here, even with a recorded phytoplankton population of more than io7 cells (Table 14) the surface- water was only 5-8 saturated with oxygen (cf. Steeman-Nielsen, 1957, p. 75). A comparison of the oxygen sections with those of temperature and salinity shows that the low oxygen content exhibits features of distribution similar to those of the upwelling water. Therefore
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