Sediment samples were collected using cores deployed from small boats (Montagna and Kalke 1992). Macrofauna were sampled with a 6.7-cm diameter core tube (35.4 cm2 area).  The cores were sectioned at 0-3 cm and 3-10 cm depths to ease the samples sorting and identification process for macrofauna but summed for whole core analyses here.  Three replicates were taken per station.  Organisms were extracted on a 0.5 mm sieve and enumerated to the lowest taxonomic level possible.  Biomass is determined for higher taxonomic groupings by drying at 55 °C for 24 hours, and summed per sample.