Bottom Trawl Surveys - Proceedings of a Workshop Held at Ottawa ...
Bottom Trawl Surveys - Proceedings of a Workshop Held at Ottawa ...
Bottom Trawl Surveys - Proceedings of a Workshop Held at Ottawa ...
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Table 2. Biomass estim<strong>at</strong>es, Esquiman Channel, Gulf <strong>of</strong> St. Lawrence, north <strong>of</strong> 50°N (area 1626 sq n<br />
miles).<br />
Biomass (kg x 10- 6 ) C<strong>at</strong>ch (kg)<br />
Mean High Low per unit 95% ± Units 1 Sets<br />
1972 3.632 4.271 2.993 25.23 4.44 143956 41<br />
1973 8.499 10.480 6.519 68. 78 16.03 123574 19<br />
1975 7.545 9.359 5.730 36.26 12.60 143956 43<br />
1976 10.845 15.573 5.958 75.34 33.65 143956 13<br />
1978 4. 798 6.487 3.110 33.33 11. 73 143956 17<br />
1979 6. 767 8.225 5.309 55.44 11.95 122067 14<br />
1980 6.674 8.220 5.128 54.673 12.667 122067 17<br />
1980 7. 729 11.552 3.905 41.04 20.31 188313 37<br />
1 Units in this and subsequent tables refers to the number <strong>of</strong> sets possible<br />
in the survey area without overlapping.<br />
Table 3. Biomass estim<strong>at</strong>es, Gulf <strong>of</strong> St. Lawrence, Esquiman Channel, south <strong>of</strong> 50°N (area 2599 sq n<br />
miles).<br />
Biomass (kg X 10- 6 ) C<strong>at</strong>ch (kg)<br />
Mean High Low per unit 95% ± Units Sets<br />
1972 2. 794 3.215 2.374 11.49 1. 73 243209 35<br />
1973 No survey<br />
1975 5. 763 7.426 4.101 30.31 8. 74 190166 12<br />
1976 6. 789 9.553 4.025 27.91 11.36 243209 7<br />
1978 1.411 2.001 0.822 5.80 2.42 243209 10<br />
1979 5. 787 6.972 4.606 23.80 4.86 243209 14<br />
1980 6.654 8.754 4.555 27.361 8.63 243209 16
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