Gray's Reef Monitoring Inventory
The monitoring projects in the following inventory take place in or around the Gray's Reef National Marine Sanctuary. Projects are conducted by either Sanctuary staff or by our partners. Summary information is presented for each. Use the "Click to for More Details" option to expand the information displayed.

For more information about the monitoring activities at Gray's Reef National Marine Sanctuary, please click here, and review the Sanctuary Condition Report.

Contact the research coordinator at the Sanctuary for additional information.



Acoustic Monitoring
Lead NOAA Office of National Marine Sanctuaries
Objective Acoustically monitor fish to determine how long managed fish species (red snapper, gag grouper, and scamp grouper) are resident in the sanctuary.

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Method Acoustically tagged fish are monitored via acoustic receivers placed in the sanctuary. Acoustic receivers are recovered by divers; data is downloaded to PC and analyzed by software.

Status Duration Frequency
Active 2008 - present Data downloaded quarterly

Links http://sanctuaries.noaa.gov/missions/2009nancy_foster/
http://graysreef.noaa.gov/science/publications/pdfs
http://noaaacousticfishtagging.blogspot.com/
Partners Georgia Department of Natural Resources, Georgia Marine Extension Service
Keyword(s) fish, acoustic tagging

Invertebrate Disturbance Assessment
Lead Georgia Southern University
Objective Monitor cleared plots of substrate for recruitment, colonization and succession of invertebrates; determine how long it will take recruits to re-establish on damaged areas of substrate.

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Method Plot photographs taken by divers and data analysis over time.

Status Duration Frequency
Active 2003 - present Photo sampling occurs bi-monthly

Links http://sanctuaries.noaa.gov/science/itf/grnms_foster
Partners NOAA Office of National Marine Sanctuaries
Keyword(s) invertebrates, substrate, disturbance, succession

Water Quality Monitoring
Lead Dr. Marc E. Frischer (Skidaway Institute of Oceanography)
Objective Monitor physical parameters of water quality, including conductivity, temperature, depth, salinity, pH, dissolved oxygen, chlorophyll and turbidity.

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Method Original data were collected as hourly "snapshots" by an instrument attached to a mooring; data were fed via acoustic modem to a data-collecting buoy and relayed via satellite to the NOAA National Data Buoy Center. More recent samples were collected by boat.

Status Duration Frequency
Active 2004 - present Quarterly

Links http://graysreef.noaa.gov/science/monitoring/
http://www.ndbc.noaa.gov/station_page.php?
Partners NOAA National Data Buoy Center
Keyword(s) water temperature, conductivity, depth, salinity, pH, dissolved oxygen, chlorophyll, turbidity

Coast Guard Overflight Monitoring
Lead United States Coast Guard Auxiliary
Objective Monitor marine mammals, sea turtles and boat positions in the sanctuary.

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Method Surveys are conducted via over-flights to log sightings of cetaceans, sea turtles, and vessel traffic; coordinates of boat positions are estimated on a grid of the sanctuary boundaries.

Status Duration Frequency
Active 1999 - present Monthly

Links http://graysreef.noaa.gov/news/features/2011/coast
Partners NOAA Office of National Marine Sanctuaries
Keyword(s) cetaceans, sea turtles, vessel traffic

Fish Monitoring
Lead NOAA Center for Coastal Monitoring and Assessment
Objective Monitoring of reef-associated fishes in different habitat types within the sanctuary; data used to couple biology to geological features.

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Method Data is collected using a transect fish count method developed by Monaco et al.

Status Duration Frequency
Inactive, pending funding 2003 - 2007 Monthly

Links http://ccma.nos.noaa.gov/ecosystems/sanctuaries
Partners NOAA Office of National Marine Sanctuaries
Keyword(s) reef fish

Invertebrate Monitoring
Lead NOAA Center for Coastal Monitoring and Assessment
Objective Monitoring of invertebrates in different habitat types within the sanctuary; data used to couple biology to geological features.

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Method Data is collected using a quadrat to provide estimates of percent invertebrate cover.

Status Duration Frequency
Inactive, pending funding 2003 - 2007 Monthly

Links http://ccma.nos.noaa.gov/ecosystems/sanctuaries
Partners NOAA Office of National Marine Sanctuaries
Keyword(s) invertebrates

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