Discovery reports (1964) Discovery reports discoveryreports32inst Year: 1964 HORIZONTAL DISTRIBUTION, GROWTH AND DYNAMICS OF DISPERSAL 355 The principal East Wind risings (Fig. 106) tend to be concentrated in the more southerly parts of the East Wind zone in a relatively narrow coastal or near coastal belt either inside the I coo-fathom line or at no great distance outside it. Beyond this belt, risings are conspicuously few and such as have been recorded are of Calyptopes in small or negligible numbers. In this coastal zone, which is generally much encumbered by ice, the surface temperatures
Discovery reports (1964) Discovery reports discoveryreports32inst Year: 1964 HORIZONTAL DISTRIBUTION, GROWTH AND DYNAMICS OF DISPERSAL 355 The principal East Wind risings (Fig. 106) tend to be concentrated in the more southerly parts of the East Wind zone in a relatively narrow coastal or near coastal belt either inside the I coo-fathom line or at no great distance outside it. Beyond this belt, risings are conspicuously few and such as have been recorded are of Calyptopes in small or negligible numbers. In this coastal zone, which is generally much encumbered by ice, the surface temperatures are almost permanently below zero C and the phytoplankton values (Fig. 104), by Weddell standards, even at the height of summer, exceedingly low. It is perhaps not surprising, therefore, that the larvae, beginning their 2864 W267 W285 W302 ADOLESCENT FURCILIA 6 i/i ' 5 a g â 4 n 52 o 48 1 44 â « 40 Z 36 ul 32 i 28 2 24 I 20 5 16 12 -> 6 4 Tl @ RS9 537 815 813 2547 2561 2562 2560 2004 2606 2603 260O 1154 1297 1361 W540W540 S W540 W538 643 2594 24 23 368 38 1781 I360 MAY JUNE WEDDELL ZONE â EAST WIND ZONE ADOLESCENT 6 FURCILIA 5 ' o) EAST WIND SWARMS DEVELOPING BELOW THE ICE STATION 52 48 44 40 36 32 28 24 20 16 12 8 4 Fig. 107. Developmental condition of the young first- and second-year swarms in the Weddell and East Wind zones, showing the backward state of the southern swarms following their prolonged 'wintering' below the polar pack. Note on vertical scale: specimens were measured to the nearest millimetre, the diagram showing the percentage length frequencies in 4-mm. groups, the figure in the vertical scale being the fourth in the group. Thus the block opposite ' 8' in the scale shows the proportion of specimens measuring 5-8 mm. inclusive (In later text-figures with 2-mm. groups the scale figure is the second of the group, 14 refers to 13 and 14 mm.). surface existence under such conditions, should from the outset (p. 321, Fig. 83) develop slowly or th
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