Northeast Coast (SEAMAP-SA)

General Information

Project Type(s):capture

Site Name:Northeast Coast (SEAMAP-SA)

Site Reference Number:39

Region(s):Northeast, Northeast, Northeast, Northeast, Northeast

Counties:Duval, Flagler, Nassau, St. Johns, Volusia

Approximate Latitude: 29.98 Approximate Longitude: -81.17

View ArcGIS map of study area

Principal Investigator(s):Webster, Robert; Wenner, Elizabeth

Point(s) of Contact:Wenner, Elizabeth - Phone Number: Not Provided, Email: Not Provided

Organizations Involved:South Carolina Department of Natural Resources

Organization Type(s):state agency

Project Status: Active

Start Date: 4/1989

End Date: n/a

Equipment and Methods

General Method(s) Used:trawl

Sampling and Effort

	Visual	Capture
Sampling regime:	annually	annually
Measure of effort:	unknown	cap/area

Bottom Type(s):pelagic

Water Type Zone: neritic-pelagic Water Type Environment: marine

Min. Depth (m): 4.6 Max. Depth (m): 19.7

Mean Depth (m): 11.7

Captures and Sightings Information

Species	No. of Captures	No. of Sightings	Min Size* (cm)	Max Size* (cm)	Mean Size* (cm)	FP Observed	Life Stages**
Green Turtle (Cm)	5	n/a	31.9 SCLmin	65.0 SCLmin	48.4 SCLmin	No	N
Loggerhead (Cc)	153	n/a	52.2 SCLmin	84.2 SCLmin	65.3 SCLmin	No	N, S, A
Kemp's Ridley (Lk)	7	n/a	36.1 SCLmin	53.8 SCLmin	48.4 SCLmin	No	S
Hawksbill (Ei)	0	n/a	n/a	n/a	n/a	n/a	n/a
Leatherback (Dc)	2	n/a	148.6 SCLmin	149.5 SCLmin	149.1 SCLmin	No	A

*All size measurements are SSCL unless otherwise indicated
** For Cm, Cc, Lk, & Ei: O - Oceanic-stage juvenile; N - Neritic-stage juvenile; S - Subadult; A - Adult. For Dc: I - Immature; A - Adult. n/a = not applicable; n/r = not reported.

This report adheres to the following size ranges for life stage classification for these species:

	Green turtle	Loggerhead	Kemp's ridley	Hawksbill
Oceanic-stage juvenile	< 25 cm SCL	< 30 cm SCL	< 25 cm SCL	< 25 cm SCL
Neritic-stage juvenile	25-69 cm SCL	30-69 cm SCL	25-39 cm SCL	25-64 cm SCL
Subadult	70-84 cm SCL	70-79 cm SCL	40-59 cm SCL	65-74 cm SCL
Adult	≥ 85 cm SCL	≥ 80 cm SCL	≥ 60 cm SCL	≥ 75 cm SCL

	Leatherback
Immature	< 135 cm OCL
Adult	≥ 135 cm OCL

Other Information Collected

Project Summary

This study area is just a portion of the larger study area used in the Southeast Area Monitoring and Assessment Program – South Atlantic Coastal Survey, which extends from Cape Hatteras, NC, to Cape Canaveral, FL. SEAMAP is a fishery-independent trawl survey which does not specifically target any species. Sea turtles are one of several “priority species” from which more detailed data are collected. Loggerheads were the most prevalent sea turtle species captured. Loggerhead densities were highest off the Florida coast and decreased northward. Seasonal density did not vary.

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