SEAMAP-SA(Southeast Area Monitoring and Assessment Program)

(South Atlantic)Shallow Water Trawl Survey

SEAMAP Stations

Types of Data• Annual / Seasonal/ Regional

Species occurrenceSpecies abundance

Biomass

• Life History Age-growth

Maturity

• Hydrographic Data Salinity

TemperatureWave height

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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)

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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