. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. IT T^ A so 100 â¢250 â¢SOO â¢750 1000 SO 100 2 SO SOO 7 SO 1000 213 2767 351 17 119 824 12 1323 76 4 221 1793 55 382 21 7 IIS4 519 146 (lis) 27 Od 4 6(5) 41 (10) 229 (188) 0) 11(1) 2(1) â 13 (12) 6(5) 5(4) II 3(2) â 4(3-) 2(1) C48) (120) (37) (15) (38) (44) SO 100 2 SO â¢t-soo 7SO 1000 Fig. 9. Four-hourly vertical distribution of the combined Calyptopis stages showing absence of any pronounced diurnal movement. The distribution here is worked out from data obtained at oceanic stations where the
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. IT T^ A so 100 â¢250 â¢SOO â¢750 1000 SO 100 2 SO SOO 7 SO 1000 213 2767 351 17 119 824 12 1323 76 4 221 1793 55 382 21 7 IIS4 519 146 (lis) 27 Od 4 6(5) 41 (10) 229 (188) 0) 11(1) 2(1) â 13 (12) 6(5) 5(4) II 3(2) â 4(3-) 2(1) C48) (120) (37) (15) (38) (44) SO 100 2 SO â¢t-soo 7SO 1000 Fig. 9. Four-hourly vertical distribution of the combined Calyptopis stages showing absence of any pronounced diurnal movement. The distribution here is worked out from data obtained at oceanic stations where the First Calyptopis occurred free, the number of stations made during each 4-hr. period, where such fell within the life-span of the Calyptopes, being shown in brackets at the bottom of the catch-table. These include negative stations. The bracketed numbers in the catch- columns indicate the considerable part of the total catch (unbracketed numbers) which was obtained from vessels lying beam on to wind and sea in winds of force 4-5 or more. !400-l80O I8OO-22OO 2200-0200 O2OO-O6OOO6OO-IOOO I000-I400 o 50- 100 2SO SOO 750' 1000 SO 100- 2SO- SOO 750- lOOO- T T». o -so -100 2SO SOO -750 1000 412 32 9S 3S 246 162 20 32 112 470 23 (46) (Ml) (37) (15) (37) SO 100 2SO 500 â 7S0 1000 (44) Fig. 10. Four-hourly vertical distribution of the First Calyptopis based on data from oceanic stations where it occurred free. Note again the figures in brackets showing the number of stations (including negative stations) made during each 4-hr. period where such fell within the life-span of this stage in the plankton. free Calyptopes is revealed to be rather small. It certainly, for instance, does not seem to involve them in any very large-scale daily descent into the vv^arm current, and suggests too that such vertical movement as may be taking place, whether it be diurnal or not, is taking place in the main within the limits of the Antarctic surface layer. Owing to its being so consistentl
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
