Archive image from page 34 of Discovery reports (1932) Discovery reports discoveryreports05inst Year: 1932 DISTRIBUTION 25 The detailed oceanographical results have yet to be published, but it is sufficient for our purpose to note the main course of the currents and the bathymetrical features. The cold west drift current passes through Drake Strait and across the Southern Atlantic. South Georgia lies athwart its course; a fact which has very important bearings on the distribution of whale food and whales (see Hardy, , lxxii, Sept. 1928). The Falkland Islands lie on the northern f
Archive image from page 34 of Discovery reports (1932) Discovery reports discoveryreports05inst Year: 1932 DISTRIBUTION 25 The detailed oceanographical results have yet to be published, but it is sufficient for our purpose to note the main course of the currents and the bathymetrical features. The cold west drift current passes through Drake Strait and across the Southern Atlantic. South Georgia lies athwart its course; a fact which has very important bearings on the distribution of whale food and whales (see Hardy, , lxxii, Sept. 1928). The Falkland Islands lie on the northern flank of this current, and between them and the mainland of South America a warmer current flows southwards. These two currents seem to have but little influence on the pelagic Amphipods. The three most abundant pelagic species in the Discovery collection are found in both currents (cf. chart, Fig. 1), though a fourth species, Cyllopus lucasii, appears to be con- fined to the colder waters. Within the limits of the cold west drift current, the distribution of the pelagic Amphi- pods around South Georgia is noteworthy, especially as it coincides in a striking manner aX • Parathemisto gaudichaudii d Vibilia antarctica o Cyllopus magellanicus o Cyllopus lucasii a Primno macropa Fig. 2. Chart showing the stations around South Georgia at which the five commonest pelagic Amphipods were captured. (Cf. Hardy, Geogr. Journ., lxxii, Sept., 1928, figs. 4, 5.) with the distribution of Eiiphausia superba (cf. Hardy, loc. cit. Figs. 4 and 5) and is evidently due to similar ecological factors. With the exception of two captures of Parathemisto gaudichandii by members of the Marine Station, not a single pelagic Amphipod was captured on the south-west side of South Georgia; whereas on the north-east side several species were found, some of them in great abundance (cf. chart, Fig. 2). It is true that the two vessels of the expedition did more collecting on the north-east side (cf. Discovery
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