CalCOFI Reports, Vol. 30, 1989 - California Cooperative Oceanic ...

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SMITH ET AL.: ZOOPLANKTON PATTERN ANALYSIS CalCOFl Rep., Vol. 30,1989 dard deviation. Note that a smaller segment of the M. pucijcu population occurred at 400-300-rn depth both day and night. Euphasiid furciliae and adults, as well as other macrozooplankton taxa, also appeared in these samples. General Appearance of Aggregations There were no pronounced differences in the general appearance of aggregations between day and night. Both seem characterized by the appearance of shattered layers, shattered patches, and relatively smooth-edged patches. The physical size of the patches ranged from the threshold of detectabil- ity to relatively large at all depths at all times of day. The largest and most coherent aggregations were detected during the vertical migrations at dawn and dusk (figure 8C, F, I, L, 0, R). Migration and Migration Rates Coherent aggregations during the entire period of migration were observed in one of three dusk records and two of three dawn records. On the dawn of April 7 the descending layer bifurcated into distinct layers (figure 8L). Estimates of maximum ascent rate ranged from 5 to 8 cm s-', and estimates of the maximum descent rate ranged from 3 to 4 cm s- '. Aggregation densities exceeded three standard A DISTANCE (rn) B DISTANCE (rn) 0 20 40 60 80 E too x t 120 140 160 180 200 220 7470 9211 5900 1450 224 40 260 111 556 185 888 592 148 1082 1296 1628 240 8 9 10 11 12 12 13 14 15 16 TIME (PST) TIME (PST) C DISTANCE (rn) 1930 857 1383 1406 1261 1560 3833 5010 D 0 DISTANCE (rn) 3190 1626 1481 374 2073 1961 1721 2190 80 - - E 100 - I 120 0 140 220 - 16 17 18 19 20 TIME (PST) Figure 8 (continues on following three pages). A-S Each letter refers to a contoured data unit of 4 hours (less in 8s). The upper margin represents the straightline distance between the ship's positions at the beginning and end of each half-hour interval. The figures are oriented on the page so that the day contours occupy the middle section, the dawn section for that calendar day is in the upper right, and the dusk section is in the lower left. The night contours are split between the upper left and the lower right. Contour interval is 1 standard deviation. 96
SMITH ET AL.: ZOOPLANKTON PATERN ANALYSIS ColCOFl Rep., Vol. 30,1989 E 0 20 DISTANCE (m) 1742 1814 1480 2114 1939 1340 1368 413 40 80 80 9 100 I t 120 W 0 140 100 180 200 220 240 0 1 2 3 4 TIME (PST) + F 160 180 200 220 240 DISTANCE (m) 1552 1148 2411 154 814 223 186 8522 0 L 4 5 6 7 8 TIME (PST) U G DISTANCE (m) 3522 667 266 671 1805 2194 2000 1442 - H 0. 20 3 40 - 80 - E 100 I 120 DISTANCE (m) 1747 2031 1818 2087 447 817 519 E -ga 0 \ 140 160 180 200 220 - 240 ._ 8 9 10 11 12 TIME (PST) 180 200 220 240 12 13 14 15 TIME (PST) I O [ DISTANCE (m) 998 1283 446 4433 111 5476 8089 4036 J DISTANCE (m) 1223 1927 1702 1517 1829 1482 1984 1852 I 2oo- I- ,! L Ii!P I 240 20 21 22 23 24 TIME (PST) 97
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Cooperative Oceanic Fisheries Inves
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CALCOFI COORDINATOR Gail Theilacker
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COMMITTEE REPORT CalCOFl Rep., Vol.
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~~ ~ FISHERIES REVIEW: 1988 CalCOFl
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FISHERIES REVIEW: 1988 CalCOFl Rep.
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~~ ~ ~~ ~~ FISHERIES REVIEW: 1988 C
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~~~ FISHERIES REVIEW: 1988 CalCOFl
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~~ LO AND METHOT: 1988 NORTHERN ANC
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~~ ~ ~ ~~ ~ ~ ~ ~ ~ ~~ I ~ ~~ ~ LO
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LO AND METHOT: 1988 NORTHERN ANCHOV
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PUBLICATIONS CalCOFl Rep.,Vol. 30,1
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SYMPOSIUM INTRODUCTION CalCOFl Rep.
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POLOVINA: ARTIFICIAL REEFS: BENTHIC
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BUCKLEY: ENHANCING MARINE FISHERIES
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Page 48 and 49: MACCALL: AGAINST MARINE FISH HATCHE
Page 50 and 51: MACCALL: AGAINST MARINE FISH HATCHE
Page 52 and 53: RUTLEDGE: TEXAS MARINE HATCHERY PRO
Page 54 and 55: RUTLEDGE: TEXAS MARINE HATCHERY PRO
Page 56 and 57: DAVIS: DESIGNATED HARVEST REFUGIA C
Page 63 and 64: HUNTER ET AL.: SABLEFISH REPRODUCTI
Page 67 and 68: ~ HUNTER ET AL.: SABLEFISH REPRODUC
Page 69 and 70: ~ ~~ ~~ HUNTER ET AL.: SABLEFISH RE
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Page 75 and 76: ~~~ - LAVANIEGOS-ESPEJO ET AL.: EL
Page 77 and 78: LAVANIEGOS-ESPEJO ET AL.: EL NINO E
Page 79 and 80: ~~~~~ ~ -~ ~~ ~ ~~~~ ~ Stylocherrot
Page 89 and 90: ~ . LAVANIEGOS-ESPEJO ET AL.: EL Nl
Page 91 and 92: ~~~ . ~ SMITH ET AL.: ZOOPLANKTON P
Page 93 and 94: ~ 2:48:031 SMITH ET AL.: ZOOPLANKTO
Page 95 and 96: SMITH ET AL.: ZOOPLANKTON PATERN AN
Page 97: SMITH ET AL.: ZOOPLANKTON PATTERN A
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Page 103 and 104: SMITH ET AL.: ZOOPLANKTON PAllERN A
Page 105 and 106: SMITH ET AL.: ZOOPLANKTON PATTERN A
Page 107 and 108: HENDRICKX AND ESTRADA-NAVARRETE: PE
Page 121 and 122: ~ .- HENDRICKX AND ESTRADA-NAVARRET
Page 125 and 126: HANAN ET AL.: SEA LIONS AND COMMERC
Page 127 and 128: HANAN ET AL.: SEA LIONS AND COMMERC
Page 129 and 130: SANZ AND URIARTE: BAY OF BISCAY ANC
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Page 135 and 136: SANZ AND URIARTE: BAY OF BlSCAY ANC
Page 137 and 138: SANZ AND URIARTE: BAY OF BISCAY ANC
Page 139 and 140: ~ ~~~~ LEONG: ANCHOVY SPERM CONCENT
Page 141 and 142: LEONG: ANCHOVY SPERM CONCENTRATIONS
Page 143 and 144: AUTHOR-TITLE INDEX, 1983-88 CalCOFl
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SUBJECT INDEX, 1983-88 CalCOFl Rep.
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SUBJECT INDEX, 1983-88 CalCOFl Rep.
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130' 125' 120" 115' 1100 1 I I 1 1
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