CalCOFI Reports, Vol. 30, 1989 - California Cooperative Oceanic ...
CalCOFI Reports, Vol. 30, 1989 - California Cooperative Oceanic ... CalCOFI Reports, Vol. 30, 1989 - California Cooperative Oceanic ...
LAVANIEGOS-ESPEJO ET AL.: EL NlNO EFFECTS ON GULF OF CALIFORNIA EUPHAUSIIDS ColCOFl Rep., Vol. 30,1989 to '90 Figure 5. Temperature distributions ("C) at the 30-m depth. 1983 and 1984 Mean Abundances (Antilogged), with Lower and Upper 95% Confidence Limits Suecies Calmt. 1983 Furc. Postlar. Calypt. 1984" Furc. Postlar. Neniatoscelis difficilis 2 1,240 575 279 124 216 90 (726-2,118) (207-1,595) (115-676) (12-1,188) (43-1,063) (14-560) hryctiphanes simplex 2 835 2,046 396b 1,940 1,499 1, 277b (189-3,685) (874-4,787) (145-1,079) (143-26,091) (189-1 1,821) (31-50,757) Euphausia eximia 4 3 7 62b 1 6 4b (0-14) (13-294) (0-6) (1-30) (1-60) E. diomedeae 1 1 0 1 1 (0-4) 0 (0-9) 0 (0-4) (0-4) E. distingnenda 19 18 4 3 2 5 (3-90) (4-75) (0-18) (0-13) (0-8) (0-29) E. lamelligera 0 0 1 0 1 1 0 (0-2 0 E. tenera 2 1 1 (0- 1 ) 1 Nematoscelisgracilir (0-8) (0-5) (0-7) (0-3) 0 0 0 0 0 0 0 0 NematobrachionPexipes 0 0 1 0 0 (0-3) Stylocheiron afjne 1 1 4 3 0 0 S. carinatum (0-4) (0-6) (0-15) (0-11) 0 0 0 0 0 0 0 0 0 aExcluding stations at mouth of gulf (23"-24"N). b2's are from night stations only (1983 n = 8; 1984 n = 7), because night and day 2's differed significantly. Total abundance for each species within a year differs from table 1 because of the properties of the log-normal distribution and, in the cases of Nyctiphanes simplex and Euphausia eximia, the inclusion of daytime abundance estimates for larval stages in the present table. 7%
LAVANIEGOS-ESPEJO ET AL.: EL NINO EFFECTS ON GULF OF CALIFORNIA EUPHAUSIIDS CalCOFl Rep., Vol. 30,1989 Figure 6. Temperature distributions ("C) at the 100-m depth. the six 1983 high abundances of N. simplex, >5,000 ind/1000 m', were to the north, at stations where temperature was less than 21°C (figure 8). In 1984, abundances of >5,000 ind/1000 m' were more common, with the highest interval, >50,000 ind/ 1000 m', extending along much of the eastern coast of the gulf. Nematoscelis d$jcilis was the species second in abundance at 37% of the total euphausiids in 1983, and 4% in 1984 (table 1). Highest abundances in 1984, >5,000 ind/1000 m3, appeared shifted somewhat toward the north in the central gulf with respect to 1983 (figure 9). The remaining nine species contributed 100,000 ind/1000 m3 were found at four of the stations (appendix 2), all of which were along the eastern coast, whereas in spring 1983, all 79
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LAVANIEGOS-ESPEJO ET AL.: EL NlNO EFFECTS ON GULF OF CALIFORNIA EUPHAUSIIDS<br />
ColCOFl Rep., <strong>Vol</strong>. <strong>30</strong>,<strong>1989</strong><br />
to<br />
'90<br />
Figure 5. Temperature distributions<br />
("C) at the <strong>30</strong>-m depth.<br />
1983 and 1984 Mean Abundances (Antilogged), with Lower and Upper 95% Confidence Limits<br />
Suecies Calmt. 1983 Furc. Postlar. Calypt. 1984" Furc. Postlar.<br />
Neniatoscelis difficilis 2 1,240 575 279 124 216 90<br />
(726-2,118) (207-1,595) (115-676) (12-1,188) (43-1,063) (14-560)<br />
hryctiphanes simplex<br />
2 835 2,046 396b 1,940 1,499 1, 277b<br />
(189-3,685) (874-4,787) (145-1,079) (143-26,091) (189-1 1,821) (31-50,757)<br />
Euphausia eximia<br />
4 3 7 62b 1 6 4b<br />
(0-14)<br />
(13-294)<br />
(0-6)<br />
(1-<strong>30</strong>)<br />
(1-60)<br />
E. diomedeae<br />
1<br />
1<br />
0<br />
1<br />
1<br />
(0-4)<br />
0<br />
(0-9)<br />
0<br />
(0-4)<br />
(0-4)<br />
E. distingnenda<br />
19<br />
18<br />
4<br />
3<br />
2<br />
5<br />
(3-90)<br />
(4-75)<br />
(0-18)<br />
(0-13)<br />
(0-8)<br />
(0-29)<br />
E. lamelligera<br />
0<br />
0<br />
1<br />
0<br />
1<br />
1<br />
0<br />
(0-2<br />
0<br />
E. tenera<br />
2<br />
1<br />
1<br />
(0- 1 )<br />
1<br />
Nematoscelisgracilir<br />
(0-8)<br />
(0-5)<br />
(0-7)<br />
(0-3)<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
NematobrachionPexipes<br />
0<br />
0<br />
1<br />
0<br />
0<br />
(0-3)<br />
Stylocheiron afjne<br />
1<br />
1<br />
4<br />
3<br />
0<br />
0<br />
S. carinatum<br />
(0-4)<br />
(0-6)<br />
(0-15)<br />
(0-11)<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
aExcluding stations at mouth of gulf (23"-24"N).<br />
b2's are from night stations only (1983 n = 8; 1984 n = 7), because night and day 2's differed significantly.<br />
Total abundance for each species within a year differs from table 1 because of the properties of the log-normal distribution and, in the cases of<br />
Nyctiphanes simplex and Euphausia eximia, the inclusion of daytime abundance estimates for larval stages in the present table.<br />
7%
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