Data
Field collections included 5,670 individuals of 179 species. Two sites (“Shelly Central” and “Bermagui”) did not contain enough shell material (<30 individuals) to accurately predict richness, so they were excluded from the analyses. Northern quadrats made up 3,218 individuals and southern quadrats made up 2,334 individuals.
The full OBIS dataset numbered 600 species and 7,480 records. After low sample size cells were removed, the dataset numbered 579 species and 6,226 records. One hundred forty-six cells were used in the final analysis. Observational data contributed an additional 775 records.