Use of a remotely operated vehicle as a



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where, ν = transect count of abalone

τ = transect area m2 (“effort on” transect length m x field of view in m)

x = 30 – 40m depth strata

y = 40 – 50m depth strata

z = 50 – 60m depth strata

N = Number of samples per strata
Second, determine the location population estimate (µ) as,
µ= Σ[Xxx), Xy y), Xzz)]
where, φ = total area of sampled location habitat, for each depth stratum (x, y, and z)
Third, calculate the 95% confidence intervals of the locations population estimates as:
CI= Σ[(x ± 1.96 (σx/√nx), (y ± 1.96 (σy/√n σy), z ± 1.96 (σz/√n σz)]
If all locations where suitable white abalone habitat exists are sampled, then the global population (µt), that is all members of the species, can be calculated as,
µt = µi + µii + µiii…….. µn
and the confidence we have in this estimate can be expressed in confidence intervals as,
CIt = CIi + CIii + CIiii……….CIn

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