Benthic Surveys in Faga'alu, American Samoa: benthic images collected during belt transect surveys in 2020 (NCEI Accession 0259389)
The benthic images provided here are part of the CRCP-funded project aimed at establishing baseline Rapid Ecological Assessment (REA) surveys for coral reef benthic cover and composition at Faga'alu Bay, Tutuila, American Samoa. In 2020, the survey implemented a one -stage stratified random sampling (StRS) design to assess the Faga'alu benthic coral reef community. The survey domain encompassed the majority of the mapped area of reef and hard bottom habitats in the 0–30 m depth range. The stratification scheme included cardinal position (i.e., north and south), reef zone (i.e., backreef and forereef), and depth (i.e., shallow: >0–6 m and mid-depth: >6–18 m). Sampling effort allocation was determined based on strata area and sites randomly located within strata. The StRS design effectively reduces estimate variance through stratification using environmental covariates and by sampling more sites rather than more transects per site. Therefore, site-to-site comparisons should proceed with caution.
In 2020, thirty images were collected along one, haphazardly laid, 30-m transects. Still photographs were collected to record the benthic community composition at predetermined points along belt transect with a high-resolution digital camera mounted on a pole. Photographs were taken every 1 m from the 1 m to the 30 m mark. This work generates 30 photographs per site, which are later analyzed by ESD staff and partners using the computer program CoralNet. This analysis is the basis for estimating benthic cover and composition at each site, which is accessible on a separate NCEI accession.
Survey protocols followed the National Coral Reef Monitoring Program methodologies historically implemented by NOAA's Ecosystem Sciences Division.
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| description | The benthic images provided here are part of the CRCP-funded project aimed at establishing baseline Rapid Ecological Assessment (REA) surveys for coral reef benthic cover and composition at Faga'alu Bay, Tutuila, American Samoa. In 2020, the survey implemented a one -stage stratified random sampling (StRS) design to assess the Faga'alu benthic coral reef community. The survey domain encompassed the majority of the mapped area of reef and hard bottom habitats in the 0–30 m depth range. The stratification scheme included cardinal position (i.e., north and south), reef zone (i.e., backreef and forereef), and depth (i.e., shallow: >0–6 m and mid-depth: >6–18 m). Sampling effort allocation was determined based on strata area and sites randomly located within strata. The StRS design effectively reduces estimate variance through stratification using environmental covariates and by sampling more sites rather than more transects per site. Therefore, site-to-site comparisons should proceed with caution. In 2020, thirty images were collected along one, haphazardly laid, 30-m transects. Still photographs were collected to record the benthic community composition at predetermined points along belt transect with a high-resolution digital camera mounted on a pole. Photographs were taken every 1 m from the 1 m to the 30 m mark. This work generates 30 photographs per site, which are later analyzed by ESD staff and partners using the computer program CoralNet. This analysis is the basis for estimating benthic cover and composition at each site, which is accessible on a separate NCEI accession. Survey protocols followed the National Coral Reef Monitoring Program methodologies historically implemented by NOAA's Ecosystem Sciences Division. |
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| identifier | gov.noaa.nodc:0259389 |
| issued | 2022-08-30T00:00:00.000+00:00 |
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[
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"CORAL",
"HABITAT - BENTHIC",
"PHOTOQUADRAT IMAGES",
"camera",
"benthic",
"biological",
"in situ",
"survey - biological",
"survey - coral reef",
"visual observation",
"NOAA Pacific Islands Fisheries Science Center",
"NOAA Pacific Islands Fisheries Science Center",
"Coral Reef Conservation Program (CRCP)",
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"South Pacific Ocean",
"oceanography",
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"PIFSC",
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"DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
"917",
"Comprehensive baseline assessment and pilot test of outcome performance measures in Faga'alu Bay, American Samoa",
"Visual Images > Corals",
"Visual Images > Habitats",
"EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat",
"EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat",
"EARTH SCIENCE > Biosphere > Zoology > Corals",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Baseline studies",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Benthos Analysis > Quadrat Monitoring",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Benthos Analysis > Quadrat Monitoring > Photograph Analysis",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Benthos Analysis > Transect Monitoring > Belt Transect",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > In Situ Biological",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Photographic Analysis",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Rapid Assessment Studies",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Benthic biology",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral reef ecology > Coral cover",
"EARTH SCIENCE > Oceans > Marine Biology > Coral",
"EARTH SCIENCE > Oceans > Marine Biology > Coral Communities",
"EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC",
"EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL LANDFORMS > CORAL REEFS",
"EARTH SCIENCE > SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE IMAGERY",
"REA",
"Rapid Ecological Assessment",
"CAMERA > CAMERA",
"COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000)",
"COUNTRY/TERRITORY > United States of America > American Samoa > Tutuila Island > Faga'alu (14S170W0005)",
"OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000)",
"OCEAN BASIN > Pacific Ocean > Pago Pago Harbor > Faga'alu (14S170W0005)",
"OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN",
"Faga'alu",
"C8Y2F3"
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[]
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| modified | 2022-09-12T00:00:00.000+00:00 |
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| rights | otherRestrictions |
| spatial | -170.672613,-14.293791,-170.681125,-14.28678 |
| temporal | 2020-01-15T00:00:00+00:00/2020-01-24T00:00:00+00:00 |
| title | Benthic Surveys in Faga'alu, American Samoa: benthic images collected during belt transect surveys in 2020 (NCEI Accession 0259389) |
