Pacific Reef Fish Surveys with Benthic Cover Estimates

Biennial surveys from 2008-01-27 to 2012-09-13 document reef fish and benthic cover across U.S. Pacific reefs. The dataset contains metadata, site characteristics, and individual fish observations from NOAA's Pacific Reef Assessment and Monitoring Program (Pacific RAMP). It employs a stratified random sampling design across the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas.

Use Cases

• Analyzing species-level fish density and biomass using recorded size, count, and observation type columns.
• Investigating relationships between fish assemblages and benthic cover using habitat and benthic cover estimate columns.
• Assessing reef ecosystem health across strata defined by island, reef zone, and depth from survey metadata.
• Modeling population trends for larger (>25 cm TL) and more agile reef fish species over the survey period.

Strengths

• Employs a stratified random sampling design across multiple Pacific regions, ensuring representative coverage of reef habitats.
• Records individual fish observations to the lowest taxonomic level possible, often species, with size estimates to the nearest 5 cm TL bin.
• Includes concurrent visual estimates of benthic cover and topographic complexity, grouping organisms into functional categories like 'Hard Coral'.

Limitations

• Conflicting last updated dates exist between sources (2012-09-13 and 2026-03-05), creating uncertainty about data currency.
• Key quantitative details like total row count, file size, and the complete column schema are unknown.
• Survey method focuses on diurnally active, larger (>25 cm TL) fish, potentially under-sampling smaller or nocturnal species.

Provenance

Source

NOAA National Centers for Environmental Information (NOAA_NCEI)

Collection Method

Collected via stationary point count (nSPC) underwater surveys as part of the Pacific Reef Assessment and Monitoring Program.

Time Range

2008-01-27 to 2012-09-13

Freshness

2026-03-05 23:13:44.467088

Geography

Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas.