SEAMAP-SA(Southeast Area Monitoring and Assessment Program)
(South Atlantic)Shallow Water Trawl Survey
Types of Data• Annual / Seasonal/ Regional
Species occurrenceSpecies abundance
Biomass
• Life History Age-growth
Maturity
• Hydrographic Data Salinity
TemperatureWave height
.
Seasons Sampled
• Spring: April – May
• Summer: July – August
• Fall: October - November
Year
Strata 51
Strata 53
1990-2000
8
4
2001
4
4
2002-2003
4
3
2004
4
4
Number of Trawl Samples/Season in Myrtle Beach Area
Catch from a 20 minute tow.
.
Most biological data is entered directly into a database as animalsare counted or measured.
High Priority Decapod Crustaceans
White Shrimp Brown Shrimp
Pink Shrimp Blue Crab
High Priority Finfish
Structure
Surface
Mid/Bottom
Bottom
Marine Turtles• Four species of marine turtle are encountered • All data is reported to federal & state
monitoring agencies
Loggerhead Leatherback
Ridley Green (not pictured)
.
Age-Growth / Reproduction
Otoliths are removed in the fieldand returned to the lab for processing
Gonad tissue is removed in the field
Age is determined from an otolith cross section Microscopic
evaluation in the labverifies field maturity assessment