BRUVS Field Desc

Pacific Islands Region where BRUVS surveys occurred. E.g. Main Hawaiian Islands = MHI, Northwestern Hawaiian Islands = NWHI.

Island or location within REGION where survey occurred

Default is "Baited"

BRUV deployment site, . Three-letter codes indicate ISLAND code (e.g. Oahu = OAH, Maui = MAI, French Frigate Shoals = FFS). Where deployments exceed 30-m depths, an additional "M" is added to the site label (e.g. OAHM, for an Oahu deployment exceeding 30-m depths).

Video frame number where the MaxN estimate for any particular SPECIES was collected

Time (in minutes since the cameras were activated) where the MaxN estimate for any particular SPECIES was collected

Sampling duration of BRUVS (default is 0-60 minutes). Sampling period begins immediately upon BRUVS touchdown on the benthos (Time on Seabed). If TIME_MIN exceeds 60 min, PERIOD is NULL.

Time (in minutes since Time on Seabed) where the MaxN estimate for any particular SPECIES was collected. If TIME_MIN exceeds 60 min, PERIOD_TIME_MIN is NULL.

Concatenated descriptive code for each BRUV deployment, combining site, type of sampling (default is baited, B), number of deployments (default is 1), and duration (default period of 60 minutes). E.g. OAH602_B_1_60.

Name or initials of video analyst

Depth as recorded by BRUVS in meters

Indicates whether BRUVS surveys occurred in SPC depths (0-30 m) or mesophotic depths (>30 m)

Indicates further stratification of sampling strata (SPC = 0-30 m; Upper mesophotic = 30-53 m; Lower mesophotic = 53-100 m)

General comments regarding each individual deployment. TOFA = measurement was taken at the time of first arrival.

Benthic habitats as described in Ayotte P., McCoy K., Heenan A., Williams I. & Zamzow J. (2015). Coral Reef Ecosystem Program Standard Operating Procedures: Data Collection for Rapid Ecological Assessment Fish Surveys. Pacific Islands Fisheries Science Center Administrative Report H-15-07, 33p. (e.g., aggregate reef, pavement, sand flat, spur & groove)

Benthic habitats from HABITATTYPE classified as either predominantly hard or predominantly soft (unconsolidated sediment) bottom.

Habitat complexity, ranked on a six point scale from low to very high (L=low; ML=medium low; M=medium; MH= medium high; H=high;VH=very high)

Habitat COMPLEXITY, converted from a text descriptor to numeric value from 1-6 (e.g. low complexity habitat = 1)

Hard (scleractinian) coral cover (%)

Soft coral cover (%)

Macroalgae cover (%)

Turf algae cover (%)

Sand or unconsolidated cover (%)

Crustose coralline algae cover (%)

Fish ID at family taxonomic level

Fish ID at genus taxonomic level

Fish ID at species taxonomic level

Four letter code combining fish genus/species

RELATIVE ABUNDANCE DATA:

Identification of fish belonging to 1 of 4 consumer groups: Primary, Secondary, Planktivore, Piscivore

RELATIVE ABUNDANCE DATA:

Consumer groups, subdivided into one of nine possible trophic groups

RELATIVE ABUNDANCE DATA:

Specific to the Hawaiian Archipelago. Identifies whether a fish recorded by BRUVS is a Hawaiian endemic.

RELATIVE ABUNDANCE DATA:

To avoid repeat counts of individual fish continuously re-entering a BRUVS field of view, the maximum number of individuals of the same species appearing at the same time (MaxN) is used as the relative abundance measure.

RELATIVE ABUNDANCE DATA:

Identifies whether a species recorded by BRUVS has actively fed on the bait

LENGTHS:

Default/only measurement is 1 (for single length measurement)

LENGTHS:

Life cycle stage (AD = Adult; J = juvenile)

LENGTHS:

Behavioral activity in the vicinity of BRUVS. Passing = transiting past the BRUVS bait bag. Attracted: approaching BRUVS bait bag, but not directly feeding. Feeding: directly feeding on bait in the bag, or consuming on particulates from the bait plume (emanating directly from the bait bag).

LENGTHS:

Fork length of targeted fish for measurement in mm.

LENGTHS:

Length category in 50-mm bins: <250, 250-300, 300-350, 350-400, etc. Fish less than 250 mm are binned into one category, and fish greater than 2000 m are binned into one category.