SEAMAP Real-time Plots for the year 2004
Week 6
This is the sixth preliminary data summary for the 2004 SEAMAP Summer Shrimp/Groundfish Survey in the northern Gulf of Mexico. This week's summary includes sampling from July 6 through July 13 by the NOAA Ship OREGON II and the R/V TOMMY MUNRO. Catch data from the OREGON II and R/V TOMMY MUNRO were taken with a 40-ft trawl.
Plotted catch rates have been converted to pounds per hour for a 40-ft trawl (20-ft trawl x 2). Shrimp counts are heads-off. Catch rates for finfish are given in the charts divided by 10; e.g., a charted catch rate of 19 means 190 lb/hr. The squares on the charts are 10-minute grids and contain an average catch or count from one or more sampling stations within a particular grid. The sampling stations were located randomly by depth zone.
The catch data from west of the Mississippi River indicated that the highest catch rate of brown shrimp was 25.9 lb/hr of 47-count shrimp in 18 fm at 28°33.7' N. lat. and 90°29.4' W. long. The catch data from west of the Mississippi River indicated that the highest catch rate of white shrimp was 6.0 lb/hr of 36-count shrimp in 9 fm at 29°12.3' N. lat. and 93°32.2' W. long. The catch data from west of the Mississippi River indicated that the highest catch rate of pink shrimp was 9.9 lb/hr of 31-count shrimp in 11 fm at 28°35.2' N. lat. and 90°42.5' W. long. The maximum total catch rate west of the River excluding the three shrimp species was 339 lb/hr in 14 fm at 28°34.1' N. lat. and 91°01.5' W. long, with thread herring as the predominant species.
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