MARMAP Chevron Trap Survey


Fish abundance and biomass data collected during the day using chevron traps on the coast of the southeastern United States by the Marine Resources, Monitorring, Assessment and Prediction Program (MARMAP) are available at OBIS. The OBIS compiled data includes species name, individual count, lat/lon, and some environmental correlates like depth and salinity. 

Dataset Location: OBIS MARMAP Chevron Trap Survey

Direct Download: OBIS MARMAP Chevron Trap Survey

Related Datasets: OBIS MARMAP Florida Antillean Trap Survey <wiki>; OBIS MARMAP Neuston Net Survey <wiki>

Site Location: Coastal Southeastern United States

Site(s) Georeferenced: Yes

Timespan: 1988 - 2000

Sampling Frequency:

Data Collection Summary / Methods: Abundance and biomass of fish was collected using chevron traps during the day.

From OBIS metadata - "Chevron traps were set on live-bottom reef areas on the continental shelf and upper slope. Chevron traps were arrowhead shaped (maximum dimensions of 1.5 m x 1.7 m x 0.6 m.; 0.91 m3 volume) and constructed of 35 mm x 35 mm square mesh plastic-coated wire. Chevron traps had one entrance funnel (“horseneck”), and one release panel to remove the catch. Each trap was soaked between 90 and 120 minutes."

Data collected: species id, abundance, biomass

OBIS data schema: species name, individual count, date, location, temperature, depth, salinity, nitrogen, oxygen, silicate.

Known Issues: weaknesses, limitations, errors, caveats, etc.

Best Practices: tips for separating the wheat from the chaff
Conditions for use: 'freely available' and 'open-access' as per OBIS:

From OBIS metadata - "Prior to use of these records in any analysis or report, MARMAP must be notified and if used the provenance of the original data must be acknowledged. Acknowledge the use of specific records from contributing MARMAP databases and acknowledge the use of the OBIS-USA facility. Recognize the limitations of data in OBIS-USA."

Citation/ Distributing Authors: Marcel Reichert, 2009, MARMAP Chevron Trap Survey 1990-2009, SCDNR/NOAA MARMAP Program, SCDNR MARMAP Aggregate Data Surveys, The Marine Resources Monitoring, Assessment, and Prediction (MARMAP) Program, Marine Resources Research Institute, South Carolina Department of Natural Resources, P. O. Box 12559, Charleston SC 29422-2559, U.S.A.Retrieved from

Supplemental resources:

Marine Resources Research Institute MARMAP -

Project Purpose and Affiliations with GCMD metadata -

Chevron trap description -;

South Carolina Department of Natural Resources -

Available via the EcoData Retriever: No

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